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Your Pre Market Brief for 08/27/2020

Your Pre Market Brief for Thursday August 27th 2020

You can subscribe to the daily 4:00 AM Pre Market Brief on The Twitter Link Here . Alerts in the tweets will direct you to the daily 4:00 AM Pre Market Brief in this sub.
Morning Research and Trading Prep Tool Kit
The Ultimate Quick Resource For the Amateur Trader.
Published 3:00 AM EST / Updated as of 3:30 AM EST
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Stock Futures:
Wednesday 08/25/2020 News and Markets Recap:
Thursday August 27th 2020 Economic Calendar (All times are Eastern)

TODAY: GDP AND UNEMPLOYMENT!!!!

ALSO PENDING HOME SALES
Overnight News Heading into Thursday August 27th 2020
(News Yet to be Traded 8:00 PM - 4:00 AM EST)
End of Day and After Hours News Heading into Thursday August 27th 2020
(News Traded 4:00 PM - 8:00 PM EST)
Offering News
Note: Seeking A url's and Reddit do not get along.
Upcoming Earnings:
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Morning Research and Trading Prep Tool Kit
Other Useful Resources:
The Ultimate Quick Resource For the Amateur Trader.
Subscribe to This Brief and the daily 4:00 AM Pre Market Brief on The Twitter Link Here . Alerts in the tweets will direct you to the daily brief in this sub
It is up to you to judge the accuracy and veracity of the above before trading. I take no responsibility for the accuracy of the information in this thread.
submitted by Cicero1982 to pennystocks [link] [comments]

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake

Scaling Reddit Community Points with Arbitrum Rollup: a piece of cake
https://preview.redd.it/b80c05tnb9e51.jpg?width=2550&format=pjpg&auto=webp&s=850282c1a3962466ed44f73886dae1c8872d0f31
Submitted for consideration to The Great Reddit Scaling Bake-Off
Baked by the pastry chefs at Offchain Labs
Please send questions or comments to [[email protected] ](mailto:[email protected])
1. Overview
We're excited to submit Arbitrum Rollup for consideration to The Great Reddit Scaling Bake-Off. Arbitrum Rollup is the only Ethereum scaling solution that supports arbitrary smart contracts without compromising on Ethereum's security or adding points of centralization. For Reddit, this means that Arbitrum can not only scale the minting and transfer of Community Points, but it can foster a creative ecosystem built around Reddit Community Points enabling points to be used in a wide variety of third party applications. That's right -- you can have your cake and eat it too!
Arbitrum Rollup isn't just Ethereum-style. Its Layer 2 transactions are byte-for-byte identical to Ethereum, which means Ethereum users can continue to use their existing addresses and wallets, and Ethereum developers can continue to use their favorite toolchains and development environments out-of-the-box with Arbitrum. Coupling Arbitrum’s tooling-compatibility with its trustless asset interoperability, Reddit not only can scale but can onboard the entire Ethereum community at no cost by giving them the same experience they already know and love (well, certainly know).
To benchmark how Arbitrum can scale Reddit Community Points, we launched the Reddit contracts on an Arbitrum Rollup chain. Since Arbitrum provides full Solidity support, we didn't have to rewrite the Reddit contracts or try to mimic their functionality using an unfamiliar paradigm. Nope, none of that. We launched the Reddit contracts unmodified on Arbitrum Rollup complete with support for minting and distributing points. Like every Arbitrum Rollup chain, the chain included a bridge interface in which users can transfer Community Points or any other asset between the L1 and L2 chains. Arbitrum Rollup chains also support dynamic contract loading, which would allow third-party developers to launch custom ecosystem apps that integrate with Community Points on the very same chain that runs the Reddit contracts.
1.1 Why Ethereum
Perhaps the most exciting benefit of distributing Community Points using a blockchain is the ability to seamlessly port points to other applications and use them in a wide variety of contexts. Applications may include simple transfers such as a restaurant that allows Redditors to spend points on drinks. Or it may include complex smart contracts -- such as placing Community Points as a wager for a multiparty game or as collateral in a financial contract.
The common denominator between all of the fun uses of Reddit points is that it needs a thriving ecosystem of both users and developers, and the Ethereum blockchain is perhaps the only smart contract platform with significant adoption today. While many Layer 1 blockchains boast lower cost or higher throughput than the Ethereum blockchain, more often than not, these attributes mask the reality of little usage, weaker security, or both.
Perhaps another platform with significant usage will rise in the future. But today, Ethereum captures the mindshare of the blockchain community, and for Community Points to provide the most utility, the Ethereum blockchain is the natural choice.
1.2 Why Arbitrum
While Ethereum's ecosystem is unmatched, the reality is that fees are high and capacity is too low to support the scale of Reddit Community Points. Enter Arbitrum. Arbitrum Rollup provides all of the ecosystem benefits of Ethereum, but with orders of magnitude more capacity and at a fraction of the cost of native Ethereum smart contracts. And most of all, we don't change the experience from users. They continue to use the same wallets, addresses, languages, and tools.
Arbitrum Rollup is not the only solution that can scale payments, but it is the only developed solution that can scale both payments and arbitrary smart contracts trustlessly, which means that third party users can build highly scalable add-on apps that can be used without withdrawing money from the Rollup chain. If you believe that Reddit users will want to use their Community Points in smart contracts--and we believe they will--then it makes the most sense to choose a single scaling solution that can support the entire ecosystem, eliminating friction for users.
We view being able to run smart contracts in the same scaling solution as fundamentally critical since if there's significant demand in running smart contracts from Reddit's ecosystem, this would be a load on Ethereum and would itself require a scaling solution. Moreover, having different scaling solutions for the minting/distribution/spending of points and for third party apps would be burdensome for users as they'd have to constantly shuffle their Points back and forth.
2. Arbitrum at a glance
Arbitrum Rollup has a unique value proposition as it offers a combination of features that no other scaling solution achieves. Here we highlight its core attributes.
Decentralized. Arbitrum Rollup is as decentralized as Ethereum. Unlike some other Layer 2 scaling projects, Arbitrum Rollup doesn't have any centralized components or centralized operators who can censor users or delay transactions. Even in non-custodial systems, centralized components provide a risk as the operators are generally incentivized to increase their profit by extracting rent from users often in ways that severely degrade user experience. Even if centralized operators are altruistic, centralized components are subject to hacking, coercion, and potential liability.
Massive Scaling. Arbitrum achieves order of magnitude scaling over Ethereum's L1 smart contracts. Our software currently supports 453 transactions-per-second for basic transactions (at 1616 Ethereum gas per tx). We have a lot of room left to optimize (e.g. aggregating signatures), and over the next several months capacity will increase significantly. As described in detail below, Arbitrum can easily support and surpass Reddit's anticipated initial load, and its capacity will continue to improve as Reddit's capacity needs grow.
Low cost. The cost of running Arbitrum Rollup is quite low compared to L1 Ethereum and other scaling solutions such as those based on zero-knowledge proofs. Layer 2 fees are low, fixed, and predictable and should not be overly burdensome for Reddit to cover. Nobody needs to use special equipment or high-end machines. Arbitrum requires validators, which is a permissionless role that can be run on any reasonable on-line machine. Although anybody can act as a validator, in order to protect against a “tragedy of the commons” and make sure reputable validators are participating, we support a notion of “invited validators” that are compensated for their costs. In general, users pay (low) fees to cover the invited validators’ costs, but we imagine that Reddit may cover this cost for its users. See more on the costs and validator options below.
Ethereum Developer Experience. Not only does Arbitrum support EVM smart contracts, but the developer experience is identical to that of L1 Ethereum contracts and fully compatible with Ethereum tooling. Developers can port existing Solidity apps or write new ones using their favorite and familiar toolchains (e.g. Truffle, Buidler). There are no new languages or coding paradigms to learn.
Ethereum wallet compatibility. Just as in Ethereum, Arbitrum users need only hold keys, but do not have to store any coin history or additional data to protect or access their funds. Since Arbitrum transactions are semantically identical to Ethereum L1 transactions, existing Ethereum users can use their existing Ethereum keys with their existing wallet software such as Metamask.
Token interoperability. Users can easily transfer their ETH, ERC-20 and ERC-721 tokens between Ethereum and the Arbitrum Rollup chain. As we explain in detail below, it is possible to mint tokens in L2 that can subsequently be withdrawn and recognized by the L1 token contract.
Fast finality. Transactions complete with the same finality time as Ethereum L1 (and it's possible to get faster finality guarantees by trading away trust assumptions; see the Arbitrum Rollup whitepaper for details).
Non-custodial. Arbitrum Rollup is a non-custodial scaling solution, so users control their funds/points and neither Reddit nor anyone else can ever access or revoke points held by users.
Censorship Resistant. Since it's completely decentralized, and the Arbitrum protocol guarantees progress trustlessly, Arbitrum Rollup is just as censorship-proof as Ethereum.
Block explorer. The Arbitrum Rollup block explorer allows users to view and analyze transactions on the Rollup chain.
Limitations
Although this is a bake-off, we're not going to sugar coat anything. Arbitrum Rollup, like any Optimistic Rollup protocol, does have one limitation, and that's the delay on withdrawals.
As for the concrete length of the delay, we've done a good deal of internal modeling and have blogged about this as well. Our current modeling suggests a 3-hour delay is sufficient (but as discussed in the linked post there is a tradeoff space between the length of the challenge period and the size of the validators’ deposit).
Note that this doesn't mean that the chain is delayed for three hours. Arbitrum Rollup supports pipelining of execution, which means that validators can keep building new states even while previous ones are “in the pipeline” for confirmation. As the challenge delays expire for each update, a new state will be confirmed (read more about this here).
So activity and progress on the chain are not delayed by the challenge period. The only thing that's delayed is the consummation of withdrawals. Recall though that any single honest validator knows immediately (at the speed of L1 finality) which state updates are correct and can guarantee that they will eventually be confirmed, so once a valid withdrawal has been requested on-chain, every honest party knows that the withdrawal will definitely happen. There's a natural place here for a liquidity market in which a validator (or someone who trusts a validator) can provide withdrawal loans for a small interest fee. This is a no-risk business for them as they know which withdrawals will be confirmed (and can force their confirmation trustlessly no matter what anyone else does) but are just waiting for on-chain finality.
3. The recipe: How Arbitrum Rollup works
For a description of the technical components of Arbitrum Rollup and how they interact to create a highly scalable protocol with a developer experience that is identical to Ethereum, please refer to the following documents:
Arbitrum Rollup Whitepaper
Arbitrum academic paper (describes a previous version of Arbitrum)
4. Developer docs and APIs
For full details about how to set up and interact with an Arbitrum Rollup chain or validator, please refer to our developer docs, which can be found at https://developer.offchainlabs.com/.
Note that the Arbitrum version described on that site is older and will soon be replaced by the version we are entering in Reddit Bake-Off, which is still undergoing internal testing before public release.
5. Who are the validators?
As with any Layer 2 protocol, advancing the protocol correctly requires at least one validator (sometimes called block producers) that is honest and available. A natural question is: who are the validators?
Recall that the validator set for an Arbitrum chain is open and permissionless; anyone can start or stop validating at will. (A useful analogy is to full nodes on an L1 chain.) But we understand that even though anyone can participate, Reddit may want to guarantee that highly reputable nodes are validating their chain. Reddit may choose to validate the chain themselves and/or hire third-party validators.To this end, we have begun building a marketplace for validator-for-hire services so that dapp developers can outsource validation services to reputable nodes with high up-time. We've announced a partnership in which Chainlink nodes will provide Arbitrum validation services, and we expect to announce more partnerships shortly with other blockchain infrastructure providers.
Although there is no requirement that validators are paid, Arbitrum’s economic model tracks validators’ costs (e.g. amount of computation and storage) and can charge small fees on user transactions, using a gas-type system, to cover those costs. Alternatively, a single party such as Reddit can agree to cover the costs of invited validators.
6. Reddit Contract Support
Since Arbitrum contracts and transactions are byte-for-byte compatible with Ethereum, supporting the Reddit contracts is as simple as launching them on an Arbitrum chain.
Minting. Arbitrum Rollup supports hybrid L1/L2 tokens which can be minted in L2 and then withdrawn onto the L1. An L1 contract at address A can make a special call to the EthBridge which deploys a "buddy contract" to the same address A on an Arbitrum chain. Since it's deployed at the same address, users can know that the L2 contract is the authorized "buddy" of the L1 contract on the Arbitrum chain.
For minting, the L1 contract is a standard ERC-20 contract which mints and burns tokens when requested by the L2 contract. It is paired with an ERC-20 contract in L2 which mints tokens based on whatever programmer provided minting facility is desired and burns tokens when they are withdrawn from the rollup chain. Given this base infrastructure, Arbitrum can support any smart contract based method for minting tokens in L2, and indeed we directly support Reddit's signature/claim based minting in L2.
Batch minting. What's better than a mint cookie? A whole batch! In addition to supporting Reddit’s current minting/claiming scheme, we built a second minting design, which we believe outperforms the signature/claim system in many scenarios.
In the current system, Reddit periodically issues signed statements to users, who then take those statements to the blockchain to claim their tokens. An alternative approach would have Reddit directly submit the list of users/amounts to the blockchain and distribute the tokens to the users without the signature/claim process.
To optimize the cost efficiency of this approach, we designed an application-specific compression scheme to minimize the size of the batch distribution list. We analyzed the data from Reddit's previous distributions and found that the data is highly compressible since token amounts are small and repeated, and addresses appear multiple times. Our function groups transactions by size, and replaces previously-seen addresses with a shorter index value. We wrote client code to compress the data, wrote a Solidity decompressing function, and integrated that function into Reddit’s contract running on Arbitrum.
When we ran the compression function on the previous Reddit distribution data, we found that we could compress batched minting data down to to 11.8 bytes per minting event (averaged over a 6-month trace of Reddit’s historical token grants)compared with roughly 174 bytes of on-chain data needed for the signature claim approach to minting (roughly 43 for an RLP-encoded null transaction + 65 for Reddit's signature + 65 for the user's signature + roughly 8 for the number of Points) .
The relative benefit of the two approaches with respect to on-chain call data cost depends on the percentage of users that will actually claim their tokens on chain. With the above figures, batch minting will be cheaper if roughly 5% of users redeem their claims. We stress that our compression scheme is not Arbitrum-specific and would be beneficial in any general-purpose smart contract platform.
8. Benchmarks and costs
In this section, we give the full costs of operating the Reddit contracts on an Arbitrum Rollup chain including the L1 gas costs for the Rollup chain, the costs of computation and storage for the L2 validators as well as the capital lockup requirements for staking.
Arbitrum Rollup is still on testnet, so we did not run mainnet benchmarks. Instead, we measured the L1 gas cost and L2 workload for Reddit operations on Arbitrum and calculated the total cost assuming current Ethereum gas prices. As noted below in detail, our measurements do not assume that Arbitrum is consuming the entire capacity of Ethereum. We will present the details of our model now, but for full transparency you can also play around with it yourself and adjust the parameters, by copying the spreadsheet found here.
Our cost model is based on measurements of Reddit’s contracts, running unmodified (except for the addition of a batch minting function) on Arbitrum Rollup on top of Ethereum.
On the distribution of transactions and frequency of assertions. Reddit's instructions specify the following minimum parameters that submissions should support:
Over a 5 day period, your scaling PoC should be able to handle:
  • 100,000 point claims (minting & distributing points)
  • 25,000 subscriptions
  • 75,000 one-off points burning
  • 100,000 transfers
We provide the full costs of operating an Arbitrum Rollup chain with this usage under the assumption that tokens are minted or granted to users in batches, but other transactions are uniformly distributed over the 5 day period. Unlike some other submissions, we do not make unrealistic assumptions that all operations can be submitted in enormous batches. We assume that batch minting is done in batches that use only a few percent on an L1 block’s gas, and that other operations come in evenly over time and are submitted in batches, with one batch every five minutes to keep latency reasonable. (Users are probably already waiting for L1 finality, which takes at least that long to achieve.)
We note that assuming that there are only 300,000 transactions that arrive uniformly over the 5 day period will make our benchmark numbers lower, but we believe that this will reflect the true cost of running the system. To see why, say that batches are submitted every five minutes (20 L1 blocks) and there's a fixed overhead of c bytes of calldata per batch, the cost of which will get amortized over all transactions executed in that batch. Assume that each individual transaction adds a marginal cost of t. Lastly assume the capacity of the scaling system is high enough that it can support all of Reddit's 300,000 transactions within a single 20-block batch (i.e. that there is more than c + 300,000*t byes of calldata available in 20 blocks).
Consider what happens if c, the per-batch overhead, is large (which it is in some systems, but not in Arbitrum). In the scenario that transactions actually arrive at the system's capacity and each batch is full, then c gets amortized over 300,000 transactions. But if we assume that the system is not running at capacity--and only receives 300,000 transactions arriving uniformly over 5 days-- then each 20-block assertion will contain about 200 transactions, and thus each transaction will pay a nontrivial cost due to c.
We are aware that other proposals presented scaling numbers assuming that 300,000 transactions arrived at maximum capacity and was executed in a single mega-transaction, but according to our estimates, for at least one such report, this led to a reported gas price that was 2-3 orders of magnitude lower than it would have been assuming uniform arrival. We make more realistic batching assumptions, and we believe Arbitrum compares well when batch sizes are realistic.
Our model. Our cost model includes several sources of cost:
  • L1 gas costs: This is the cost of posting transactions as calldata on the L1 chain, as well as the overhead associated with each batch of transactions, and the L1 cost of settling transactions in the Arbitrum protocol.
  • Validator’s staking costs: In normal operation, one validator will need to be staked. The stake is assumed to be 0.2% of the total value of the chain (which is assumed to be $1 per user who is eligible to claim points). The cost of staking is the interest that could be earned on the money if it were not staked.
  • Validator computation and storage: Every validator must do computation to track the chain’s processing of transactions, and must maintain storage to keep track of the contracts’ EVM storage. The cost of computation and storage are estimated based on measurements, with the dollar cost of resources based on Amazon Web Services pricing.
It’s clear from our modeling that the predominant cost is for L1 calldata. This will probably be true for any plausible rollup-based system.
Our model also shows that Arbitrum can scale to workloads much larger than Reddit’s nominal workload, without exhausting L1 or L2 resources. The scaling bottleneck will ultimately be calldata on the L1 chain. We believe that cost could be reduced substantially if necessary by clever encoding of data. (In our design any compression / decompression of L2 transaction calldata would be done by client software and L2 programs, never by an L1 contract.)
9. Status of Arbitrum Rollup
Arbitrum Rollup is live on Ethereum testnet. All of the code written to date including everything included in the Reddit demo is open source and permissively licensed under the Apache V2 license. The first testnet version of Arbitrum Rollup was released on testnet in February. Our current internal version, which we used to benchmark the Reddit contracts, will be released soon and will be a major upgrade.
Both the Arbitrum design as well as the implementation are heavily audited by independent third parties. The Arbitrum academic paper was published at USENIX Security, a top-tier peer-reviewed academic venue. For the Arbitrum software, we have engaged Trail of Bits for a security audit, which is currently ongoing, and we are committed to have a clean report before launching on Ethereum mainnet.
10. Reddit Universe Arbitrum Rollup Chain
The benchmarks described in this document were all measured using the latest internal build of our software. When we release the new software upgrade publicly we will launch a Reddit Universe Arbitrum Rollup chain as a public demo, which will contain the Reddit contracts as well as a Uniswap instance and a Connext Hub, demonstrating how Community Points can be integrated into third party apps. We will also allow members of the public to dynamically launch ecosystem contracts. We at Offchain Labs will cover the validating costs for the Reddit Universe public demo.
If the folks at Reddit would like to evaluate our software prior to our public demo, please email us at [email protected] and we'd be more than happy to provide early access.
11. Even more scaling: Arbitrum Sidechains
Rollups are an excellent approach to scaling, and we are excited about Arbitrum Rollup which far surpasses Reddit's scaling needs. But looking forward to Reddit's eventual goal of supporting hundreds of millions of users, there will likely come a time when Reddit needs more scaling than any Rollup protocol can provide.
While Rollups greatly reduce costs, they don't break the linear barrier. That is, all transactions have an on-chain footprint (because all calldata must be posted on-chain), albeit a far smaller one than on native Ethereum, and the L1 limitations end up being the bottleneck for capacity and cost. Since Ethereum has limited capacity, this linear use of on-chain resources means that costs will eventually increase superlinearly with traffic.
The good news is that we at Offchain Labs have a solution in our roadmap that can satisfy this extreme-scaling setting as well: Arbitrum AnyTrust Sidechains. Arbitrum Sidechains are similar to Arbitrum Rollup, but deviate in that they name a permissioned set of validators. When a chain’s validators agree off-chain, they can greatly reduce the on-chain footprint of the protocol and require almost no data to be put on-chain. When validators can't reach unanimous agreement off-chain, the protocol reverts to Arbitrum Rollup. Technically, Arbitrum Sidechains can be viewed as a hybrid between state channels and Rollup, switching back and forth as necessary, and combining the performance and cost that state channels can achieve in the optimistic case, with the robustness of Rollup in other cases. The core technical challenge is how to switch seamlessly between modes and how to guarantee that security is maintained throughout.
Arbitrum Sidechains break through this linear barrier, while still maintaining a high level of security and decentralization. Arbitrum Sidechains provide the AnyTrust guarantee, which says that as long as any one validator is honest and available (even if you don't know which one will be), the L2 chain is guaranteed to execute correctly according to its code and guaranteed to make progress. Unlike in a state channel, offchain progress does not require unanimous consent, and liveness is preserved as long as there is a single honest validator.
Note that the trust model for Arbitrum Sidechains is much stronger than for typical BFT-style chains which introduce a consensus "voting" protocols among a small permissioned group of validators. BFT-based protocols require a supermajority (more than 2/3) of validators to agree. In Arbitrum Sidechains, by contrast, all you need is a single honest validator to achieve guaranteed correctness and progress. Notice that in Arbitrum adding validators strictly increases security since the AnyTrust guarantee provides correctness as long as any one validator is honest and available. By contrast, in BFT-style protocols, adding nodes can be dangerous as a coalition of dishonest nodes can break the protocol.
Like Arbitrum Rollup, the developer and user experiences for Arbitrum Sidechains will be identical to that of Ethereum. Reddit would be able to choose a large and diverse set of validators, and all that they would need to guarantee to break through the scaling barrier is that a single one of them will remain honest.
We hope to have Arbitrum Sidechains in production in early 2021, and thus when Reddit reaches the scale that surpasses the capacity of Rollups, Arbitrum Sidechains will be waiting and ready to help.
While the idea to switch between channels and Rollup to get the best of both worlds is conceptually simple, getting the details right and making sure that the switch does not introduce any attack vectors is highly non-trivial and has been the subject of years of our research (indeed, we were working on this design for years before the term Rollup was even coined).
12. How Arbitrum compares
We include a comparison to several other categories as well as specific projects when appropriate. and explain why we believe that Arbitrum is best suited for Reddit's purposes. We focus our attention on other Ethereum projects.
Payment only Rollups. Compared to Arbitrum Rollup, ZK-Rollups and other Rollups that only support token transfers have several disadvantages:
  • As outlined throughout the proposal, we believe that the entire draw of Ethereum is in its rich smart contracts support which is simply not achievable with today's zero-knowledge proof technology. Indeed, scaling with a ZK-Rollup will add friction to the deployment of smart contracts that interact with Community Points as users will have to withdraw their coins from the ZK-Rollup and transfer them to a smart contract system (like Arbitrum). The community will be best served if Reddit builds on a platform that has built-in, frictionless smart-contract support.
  • All other Rollup protocols of which we are aware employ a centralized operator. While it's true that users retain custody of their coins, the centralized operator can often profit from censoring, reordering, or delaying transactions. A common misconception is that since they're non-custodial protocols, a centralized sequencer does not pose a risk but this is incorrect as the sequencer can wreak havoc or shake down users for side payments without directly stealing funds.
  • Sidechain type protocols can eliminate some of these issues, but they are not trustless. Instead, they require trust in some quorum of a committee, often requiring two-third of the committee to be honest, compared to rollup protocols like Arbitrum that require only a single honest party. In addition, not all sidechain type protocols have committees that are diverse, or even non-centralized, in practice.
  • Plasma-style protocols have a centralized operator and do not support general smart contracts.
13. Concluding Remarks
While it's ultimately up to the judges’ palate, we believe that Arbitrum Rollup is the bakeoff choice that Reddit kneads. We far surpass Reddit's specified workload requirement at present, have much room to optimize Arbitrum Rollup in the near term, and have a clear path to get Reddit to hundreds of millions of users. Furthermore, we are the only project that gives developers and users the identical interface as the Ethereum blockchain and is fully interoperable and tooling-compatible, and we do this all without any new trust assumptions or centralized components.
But no matter how the cookie crumbles, we're glad to have participated in this bake-off and we thank you for your consideration.
About Offchain Labs
Offchain Labs, Inc. is a venture-funded New York company that spun out of Princeton University research, and is building the Arbitrum platform to usher in the next generation of scalable, interoperable, and compatible smart contracts. Offchain Labs is backed by Pantera Capital, Compound VC, Coinbase Ventures, and others.
Leadership Team
Ed Felten
Ed Felten is Co-founder and Chief Scientist at Offchain Labs. He is on leave from Princeton University, where he is the Robert E. Kahn Professor of Computer Science and Public Affairs. From 2015 to 2017 he served at the White House as Deputy United States Chief Technology Officer and senior advisor to the President. He is an ACM Fellow and member of the National Academy of Engineering. Outside of work, he is an avid runner, cook, and L.A. Dodgers fan.
Steven Goldfeder
Steven Goldfeder is Co-founder and Chief Executive Officer at Offchain Labs. He holds a PhD from Princeton University, where he worked at the intersection of cryptography and cryptocurrencies including threshold cryptography, zero-knowledge proof systems, and post-quantum signatures. He is a co-author of Bitcoin and Cryptocurrency Technologies, the leading textbook on cryptocurrencies, and he has previously worked at Google and Microsoft Research, where he co-invented the Picnic signature algorithm. When not working, you can find Steven spending time with his family, taking a nature walk, or twisting balloons.
Harry Kalodner
Harry Kalodner is Co-founder and Chief Technology Officer at Offchain Labs where he leads the engineering team. Before the company he attended Princeton as a Ph.D candidate where his research explored economics, anonymity, and incentive compatibility of cryptocurrencies, and he also has worked at Apple. When not up at 3:00am writing code, Harry occasionally sleeps.
submitted by hkalodner to ethereum [link] [comments]

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

Syscoin Platform’s Great Reddit Scaling Bake-off Proposal

https://preview.redd.it/rqt2dldyg8e51.jpg?width=1044&format=pjpg&auto=webp&s=777ae9d4fbbb54c3540682b72700fc4ba3de0a44
We are excited to participate and present Syscoin Platform's ideal characteristics and capabilities towards a well-rounded Reddit Community Points solution!
Our scaling solution for Reddit Community Points involves 2-way peg interoperability with Ethereum. This will provide a scalable token layer built specifically for speed and high volumes of simple value transfers at a very low cost, while providing sovereign ownership and onchain finality.
Token transfers scale by taking advantage of a globally sorting mempool that provides for probabilistically secure assumptions of “as good as settled”. The opportunity here for token receivers is to have an app-layer interactivity on the speed/security tradeoff (99.9999% assurance within 10 seconds). We call this Z-DAG, and it achieves high-throughput across a mesh network topology presently composed of about 2,000 geographically dispersed full-nodes. Similar to Bitcoin, however, these nodes are incentivized to run full-nodes for the benefit of network security, through a bonded validator scheme. These nodes do not participate in the consensus of transactions or block validation any differently than other nodes and therefore do not degrade the security model of Bitcoin’s validate first then trust, across every node. Each token transfer settles on-chain. The protocol follows Bitcoin core policies so it has adequate code coverage and protocol hardening to be qualified as production quality software. It shares a significant portion of Bitcoin’s own hashpower through merged-mining.
This platform as a whole can serve token microtransactions, larger settlements, and store-of-value in an ideal fashion, providing probabilistic scalability whilst remaining decentralized according to Bitcoin design. It is accessible to ERC-20 via a permissionless and trust-minimized bridge that works in both directions. The bridge and token platform are currently available on the Syscoin mainnet. This has been gaining recent attention for use by loyalty point programs and stablecoins such as Binance USD.

Solutions

Syscoin Foundation identified a few paths for Reddit to leverage this infrastructure, each with trade-offs. The first provides the most cost-savings and scaling benefits at some sacrifice of token autonomy. The second offers more preservation of autonomy with a more narrow scope of cost savings than the first option, but savings even so. The third introduces more complexity than the previous two yet provides the most overall benefits. We consider the third as most viable as it enables Reddit to benefit even while retaining existing smart contract functionality. We will focus on the third option, and include the first two for good measure.
  1. Distribution, burns and user-to-user transfers of Reddit Points are entirely carried out on the Syscoin network. This full-on approach to utilizing the Syscoin network provides the most scalability and transaction cost benefits of these scenarios. The tradeoff here is distribution and subscription handling likely migrating away from smart contracts into the application layer.
  2. The Reddit Community Points ecosystem can continue to use existing smart contracts as they are used today on the Ethereum mainchain. Users migrate a portion of their tokens to Syscoin, the scaling network, to gain much lower fees, scalability, and a proven base layer, without sacrificing sovereign ownership. They would use Syscoin for user-to-user transfers. Tips redeemable in ten seconds or less, a high-throughput relay network, and onchain settlement at a block target of 60 seconds.
  3. Integration between Matic Network and Syscoin Platform - similar to Syscoin’s current integration with Ethereum - will provide Reddit Community Points with EVM scalability (including the Memberships ERC777 operator) on the Matic side, and performant simple value transfers, robust decentralized security, and sovereign store-of-value on the Syscoin side. It’s “the best of both worlds”. The trade-off is more complex interoperability.

Syscoin + Matic Integration

Matic and Blockchain Foundry Inc, the public company formed by the founders of Syscoin, recently entered a partnership for joint research and business development initiatives. This is ideal for all parties as Matic Network and Syscoin Platform provide complementary utility. Syscoin offers characteristics for sovereign ownership and security based on Bitcoin’s time-tested model, and shares a significant portion of Bitcoin’s own hashpower. Syscoin’s focus is on secure and scalable simple value transfers, trust-minimized interoperability, and opt-in regulatory compliance for tokenized assets rather than scalability for smart contract execution. On the other hand, Matic Network can provide scalable EVM for smart contract execution. Reddit Community Points can benefit from both.
Syscoin + Matic integration is actively being explored by both teams, as it is helpful to Reddit, Ethereum, and the industry as a whole.

Proving Performance & Cost Savings

Our POC focuses on 100,000 on-chain settlements of token transfers on the Syscoin Core blockchain. Transfers and burns perform equally with Syscoin. For POCs related to smart contracts (subscriptions, etc), refer to the Matic Network proposal.
On-chain settlement of 100k transactions was accomplished within roughly twelve minutes, well-exceeding Reddit’s expectation of five days. This was performed using six full-nodes operating on compute-optimized AWS c4.2xlarge instances which were geographically distributed (Virginia, London, Sao Paulo Brazil, Oregon, Singapore, Germany). A higher quantity of settlements could be reached within the same time-frame with more broadcasting nodes involved, or using hosts with more resources for faster execution of the process.
Addresses used: 100,014
The demonstration was executed using this tool. The results can be seen in the following blocks:
612722: https://sys1.bcfn.ca/block/6d47796d043bb4c508d29123e6ae81b051f5e0aaef849f253c8f3a6942a022ce
612723: https://sys1.bcfn.ca/block/8e2077f743461b90f80b4bef502f564933a8e04de97972901f3d65cfadcf1faf
612724: https://sys1.bcfn.ca/block/205436d25b1b499fce44c29567c5c807beaca915b83cc9f3c35b0d76dbb11f6e
612725: https://sys1.bcfn.ca/block/776d1b1a0f90f655a6bbdf559ff5072459cbdc5682d7615ff4b78c00babdc237
612726: https://sys1.bcfn.ca/block/de4df0994253742a1ac8ac9eec8d2a8c8b0a6d72c53d6f3caa29bb6c171b0a6b
612727: https://sys1.bcfn.ca/block/e5e167c52a9decb313fbaadf49a5e34cb490f8084f642a850385476d4ef10d70
612728: https://sys1.bcfn.ca/block/ab64d989edc71890e7b5b8491c20e9a27520dc45a5f7c776d3dae79057f59fe7
612729: https://sys1.bcfn.ca/block/5e8b7ecd0e36f99d07e4ea6e135fc952bf7ec30164ab6f4d1e98b0f2d405df6d
612730: https://sys1.bcfn.ca/block/d395df3d31dde60bbb0bece6bd5b358297da878f0beb96be389e5f0e043580a3
It is important to note that this POC is not focused on Z-DAG. The performance of Z-DAG has been benchmarked within realistic network conditions: Whiteblock’s audit is publicly available. Network latency tests showed an average TPS around 15k with burst capacity up to 61k. Zero-latency control group exhibited ~150k TPS. Mainnet testing of the Z-DAG network is achievable and will require further coordination and additional resources.
Even further optimizations are expected in the upcoming Syscoin Core release which will implement a UTXO model for our token layer bringing further efficiency as well as open the door to additional scaling technology currently under research by our team and academic partners. At present our token layer is account-based, similar to Ethereum. Opt-in compliance structures will also be introduced soon which will offer some positive performance characteristics as well. It makes the most sense to implement these optimizations before performing another benchmark for Z-DAG, especially on the mainnet considering the resources required to stress-test this network.

Cost Savings

Total cost for these 100k transactions: $0.63 USD
See the live fee comparison for savings estimation between transactions on Ethereum and Syscoin. Below is a snapshot at time of writing:
ETH price: $318.55 ETH gas price: 55.00 Gwei ($0.37)
Syscoin price: $0.11
Snapshot of live fee comparison chart
Z-DAG provides a more efficient fee-market. A typical Z-DAG transaction costs 0.0000582 SYS. Tokens can be safely redeemed/re-spent within seconds or allowed to settle on-chain beforehand. The costs should remain about this low for microtransactions.
Syscoin will achieve further reduction of fees and even greater scalability with offchain payment channels for assets, with Z-DAG as a resilience fallback. New payment channel technology is one of the topics under research by the Syscoin development team with our academic partners at TU Delft. In line with the calculation in the Lightning Networks white paper, payment channels using assets with Syscoin Core will bring theoretical capacity for each person on Earth (7.8 billion) to have five on-chain transactions per year, per person, without requiring anyone to enter a fee market (aka “wait for a block”). This exceeds the minimum LN expectation of two transactions per person, per year; one to exist on-chain and one to settle aggregated value.

Tools, Infrastructure & Documentation

Syscoin Bridge

Mainnet Demonstration of Syscoin Bridge with the Basic Attention Token ERC-20
A two-way blockchain interoperability system that uses Simple Payment Verification to enable:
  • Any Standard ERC-20 token to be moved from Ethereum to the Syscoin blockchain as a Syscoin Platform Token (SPT), and back to Ethereum
  • Any SPT to be moved from Syscoin to the Ethereum blockchain as an ERC-20 token, and back to Syscoin

Benefits

  • Permissionless
  • No counterparties involved
  • No trading mechanisms involved
  • No third-party liquidity providers required
  • Cross-chain Fractional Supply - 2-way peg - Token supply maintained globally
  • ERC-20s gain vastly improved transactionality with the Syscoin Token Platform, along with the security of bitcoin-core-compliant PoW.
  • SPTs gain access to all the tooling, applications and capabilities of Ethereum for ERC-20, including smart contracts.
https://preview.redd.it/l8t2m8ldh8e51.png?width=1180&format=png&auto=webp&s=b0a955a0181746dc79aff718bd0bf607d3c3aa23
https://preview.redd.it/26htnxzfh8e51.png?width=1180&format=png&auto=webp&s=d0383d3c2ee836c9f60b57eca35542e9545f741d

Source code

https://github.com/syscoin/?q=sysethereum
Main Subprojects

API

Tools to simplify using Syscoin Bridge as a service with dapps and wallets will be released some time after implementation of Syscoin Core 4.2. These will be based upon the same processes which are automated in the current live Sysethereum Dapp that is functioning with the Syscoin mainnet.

Documentation

Syscoin Bridge & How it Works (description and process flow)
Superblock Validation Battles
HOWTO: Provision the Bridge for your ERC-20
HOWTO: Setup an Agent
Developer & User Diligence

Trade-off

The Syscoin Ethereum Bridge is secured by Agent nodes participating in a decentralized and incentivized model that involves roles of Superblock challengers and submitters. This model is open to participation. The benefits here are trust-minimization, permissionless-ness, and potentially less legal/regulatory red-tape than interop mechanisms that involve liquidity providers and/or trading mechanisms.
The trade-off is that due to the decentralized nature there are cross-chain settlement times of one hour to cross from Ethereum to Syscoin, and three hours to cross from Syscoin to Ethereum. We are exploring ways to reduce this time while maintaining decentralization via zkp. Even so, an “instant bridge” experience could be provided by means of a third-party liquidity mechanism. That option exists but is not required for bridge functionality today. Typically bridges are used with batch value, not with high frequencies of smaller values, and generally it is advantageous to keep some value on both chains for maximum availability of utility. Even so, the cross-chain settlement time is good to mention here.

Cost

Ethereum -> Syscoin: Matic or Ethereum transaction fee for bridge contract interaction, negligible Syscoin transaction fee for minting tokens
Syscoin -> Ethereum: Negligible Syscoin transaction fee for burning tokens, 0.01% transaction fee paid to Bridge Agent in the form of the ERC-20, Matic or Ethereum transaction fee for contract interaction.

Z-DAG

Zero-Confirmation Directed Acyclic Graph is an instant settlement protocol that is used as a complementary system to proof-of-work (PoW) in the confirmation of Syscoin service transactions. In essence, a Z-DAG is simply a directed acyclic graph (DAG) where validating nodes verify the sequential ordering of transactions that are received in their memory pools. Z-DAG is used by the validating nodes across the network to ensure that there is absolute consensus on the ordering of transactions and no balances are overflowed (no double-spends).

Benefits

  • Unique fee-market that is more efficient for microtransaction redemption and settlement
  • Uses decentralized means to enable tokens with value transfer scalability that is comparable or exceeds that of credit card networks
  • Provides high throughput and secure fulfillment even if blocks are full
  • Probabilistic and interactive
  • 99.9999% security assurance within 10 seconds
  • Can serve payment channels as a resilience fallback that is faster and lower-cost than falling-back directly to a blockchain
  • Each Z-DAG transaction also settles onchain through Syscoin Core at 60-second block target using SHA-256 Proof of Work consensus
https://preview.redd.it/pgbx84jih8e51.png?width=1614&format=png&auto=webp&s=5f631d42a33dc698365eb8dd184b6d442def6640

Source code

https://github.com/syscoin/syscoin

API

Syscoin-js provides tooling for all Syscoin Core RPCs including interactivity with Z-DAG.

Documentation

Z-DAG White Paper
Useful read: An in-depth Z-DAG discussion between Syscoin Core developer Jag Sidhu and Brave Software Research Engineer Gonçalo Pestana

Trade-off

Z-DAG enables the ideal speed/security tradeoff to be determined per use-case in the application layer. It minimizes the sacrifice required to accept and redeem fast transfers/payments while providing more-than-ample security for microtransactions. This is supported on the premise that a Reddit user receiving points does need security yet generally doesn’t want nor need to wait for the same level of security as a nation-state settling an international trade debt. In any case, each Z-DAG transaction settles onchain at a block target of 60 seconds.

Syscoin Specs

Syscoin 3.0 White Paper
(4.0 white paper is pending. For improved scalability and less blockchain bloat, some features of v3 no longer exist in current v4: Specifically Marketplace Offers, Aliases, Escrow, Certificates, Pruning, Encrypted Messaging)
  • 16MB block bandwidth per minute assuming segwit witness carrying transactions, and transactions ~200 bytes on average
  • SHA256 merge mined with Bitcoin
  • UTXO asset layer, with base Syscoin layer sharing identical security policies as Bitcoin Core
  • Z-DAG on asset layer, bridge to Ethereum on asset layer
  • On-chain scaling with prospect of enabling enterprise grade reliable trustless payment processing with on/offchain hybrid solution
  • Focus only on Simple Value Transfers. MVP of blockchain consensus footprint is balances and ownership of them. Everything else can reduce data availability in exchange for scale (Ethereum 2.0 model). We leave that to other designs, we focus on transfers.
  • Future integrations of MAST/Taproot to get more complex value transfers without trading off trustlessness or decentralization.
  • Zero-knowledge Proofs are a cryptographic new frontier. We are dabbling here to generalize the concept of bridging and also verify the state of a chain efficiently. We also apply it in our Digital Identity projects at Blockchain Foundry (a publicly traded company which develops Syscoin softwares for clients). We are also looking to integrate privacy preserving payment channels for off-chain payments through zkSNARK hub & spoke design which does not suffer from the HTLC attack vectors evident on LN. Much of the issues plaguing Lightning Network can be resolved using a zkSNARK design whilst also providing the ability to do a multi-asset payment channel system. Currently we found a showstopper attack (American Call Option) on LN if we were to use multiple-assets. This would not exist in a system such as this.

Wallets

Web3 and mobile wallets are under active development by Blockchain Foundry Inc as WebAssembly applications and expected for release not long after mainnet deployment of Syscoin Core 4.2. Both of these will be multi-coin wallets that support Syscoin, SPTs, Ethereum, and ERC-20 tokens. The Web3 wallet will provide functionality similar to Metamask.
Syscoin Platform and tokens are already integrated with Blockbook. Custom hardware wallet support currently exists via ElectrumSys. First-class HW wallet integration through apps such as Ledger Live will exist after 4.2.
Current supported wallets
Syscoin Spark Desktop
Syscoin-Qt

Explorers

Mainnet: https://sys1.bcfn.ca (Blockbook)
Testnet: https://explorer-testnet.blockchainfoundry.co

Thank you for close consideration of our proposal. We look forward to feedback, and to working with the Reddit community to implement an ideal solution using Syscoin Platform!

submitted by sidhujag to ethereum [link] [comments]

Full Option Koinpro

In today's world of heavily nascent and volatile cryptocurrency, one point or factor stands out. That is exchanges. Cryptocurrency exchanges are sites(whether physical or virtual) where cryptocurrencies are traded for each other or traditional fiat currencies like Euro, Pound Sterling or US Dollar. They may be divided by many criteria, chief of which may be Modus Operandi or Central Control. The Degree of Control suggests a central control of exchange management and resources. There are Centralized, Decentralized and Hybrid exchanges. Now we can narrow down to Centralized Exchanges. These are where transactions are monitored and controlled by the owners of the exchange. Transactions can be made only through mechanisms provided and approved by the central body. Also there is no access to private keys by traders. Examples include Koinpro, Binance, Kucoin, Bittrex etc.
About Koinpro This is a Smart Bitcoin Futures Exchange. KoinPro, your new fangled crypto exchange, that goes beyond crypto and boasts of multiple futures contracts, with its own unique features and benefits. Bitcoin Futures, Contracts for Difference are complex instruments. Trading these financial products carries a high level of risk since leverage can work both to your advantage and disadvantage. There are a lot of exchanges, both crypto and fiat(mainstream and otherwise) trading tools like CFD, oil, futures etc; but not one of them Integrates CFDs like Koinpro. Its a no-brainer choice, since going for KoinPro’s unique double-UP contract, customers can simply enter into a predefined order position that will automatically terminate when the position either gains or loses 100% of its value, or when the contract expires — whichever comes first. insurance coverage is provided as a courtesy to BitGo Prime, which is a sole counterparty Prices derived from a wide range of Tier 1 institutions such as exchanges and professional market makers Trading on a fully non-disclosed basis Fully integrated with BitGo Portfolio & Tax. At KoinPro, we take the safety and security of our clients extremely seriously. To help make KoinPro one of the safest places to trade, we store our customer funds in cold storage wallets provided by BitGo—the world leader in secure digital asset storage. BitGo custody includes a $100 million insurance plan underwritten by Lloyd’s of London—one of the UK’s largest insurance markets.
This insurance coverage is provided as a courtesy to KoinPro users and hence comes at no additional cost. This insurance coverage protects digital assets held by BitGo, Inc. or BitGo Trust Company in the event of;
Third-party hacks or theft of private keys Insider theft by employees of private keys Physical loss or damage of private keys
BitGo has delivered institution-grade security for digital assets since 2013, and features state-of-the-art cold storage technology, which includes a bank-grade Class III vault and stringent controls designed to practically eliminate the risk of loss. Full details about the BitGo custody and insurance protection can be found here.
https://koinpro.com/
https://bitcointalk.org/index.php?topic=5219842
submitted by redoc77 to ICOAnalysis [link] [comments]

Report on Filecoin And PoC Projects

Report on Filecoin And PoC Projects
Author: Gamals Ahmed, CoinEx Business Ambassador
ABSTRACT
A Blockchain is a continuously growing record, called blocks, which are linked and secured using cryptography such as hashing. Each block contains a hash pointer as a link to the previous block, a timestamp and transaction data. Filecoin is a decentralized storage network that turns cloud storage into an algorithmic market. The market runs on a blockchain with a native protocol token (also called Filecoin), which miners earn by providing storage to clients. The first section of report is demonstrate the filecoin which is a decentralized storage system used to encrypt files that we need to share it through blockchain platform. The second section is explain briefly blockchain Proof of Concept (POC) which is a process of locate whether a Blockchain project idea can be feasible in a real-world situation, need of proof of concept and blockchain proof of concept stages.
1.Introduction
Filecoin is a protocol token whose blockchain runs on a novel proof, called Proof-of-Space time, where blocks are created by miners that are storing data. Filecoin protocol provides a data storage and retrieval service via a network of independent storage providers that does not rely on a single coordinator, where: (1) clients pay to store and retrieve data, (2) Storage Miners earn tokens by offering storage (3) Retrieval Miners earn tokens by serving data.
Filecoin is a decentralized storage network that turns cloud storage into an algorithmic market. The market runs on a blockchain with a native protocol token (also called Filecoin”), which miners earn by providing storage to clients. Conversely, clients spend Filecoin hiring miners to store or distribute data. As with Bitcoin, Filecoin miners compete to mine blocks with sizable rewards[1].
Filecoin mining power is proportional to active storage, which directly provides a useful service to clients (unlike Bitcoin mining, whose usefulness is limited to maintaining blockchain consensus). This creates a powerful incentive for miners to amass as much storage as they can, and rent it out to clients. The protocol weaves these amassed resources into a self-healing storage network that anybody in the world can rely on. The network achieves robustness by replicating and dispersing content, while automatically detecting and repairing replica failures. Clients can select replication parameters to protect against different threat models. The protocol’s cloud storage network also provides security, as content is encrypted end-to-end at the client, while storage providers do not have access to decryption keys. Filecoin works as an incentive layer on top of IPFS [1], which can provide storage infrastructure for any data. It is especially useful for decentralizing data, building and running distributed applications, and implementing smart contracts [2].
Filecoin[2] based on IPFS[3] proposes a completely decentralized distributed storage network where customers and storage miners request services and submit orders to the storage and retrieval markets. And the miner provides a service to view matching quotes to initiate a transaction. The protocol guarantees the integrity of data storage by copying proofs and space-time certificates. The Filecoin protocol writes the order book, token transactions, and integrity challenge response records to the blockchain.
1.1 Blockchain
Blockchain is a characteristic data structure formed by combining data blocks in a chain order inchronological order[4], and cryptographically guarantees decentralized, non-tamperable, unforgeable distributed shared ledger system.
Figure 1 Blockchain Structure
1.2 Elementary Components in Filecoin
The Filecoin protocol builds upon four novel components :
  1. Decentralized Storage Network (DSN): We provide an abstraction for network of independent storage providers to offer storage and retrieval services.
  2. Novel Proofs-of-Storage: We present two novel Proofs-of-Storage,(1) Proof-of Replication allows storage providers to prove that data has been replicated to its own uniquely dedicated physical storage. Enforcing unique physical copies enables a verifier to check that a prover is not deduplicating multiple copies of the data into the same storage space, (2) Proof-of-Space time allows storage providers to prove they have stored some data throughout a specified amount of time.
  3. Verifiable Markets: We model storage requests and retrieval requests as orders in two decentralized verifiable markets operated by the Filecoin network. Verifiable markets ensure that payments are performed when a service has been correctly provided. We present the Storage Market and the Retrieval Market where miners and clients can respectively submit storage and retrieval orders.
  4. Useful Proof-of-Work: We show how to construct a useful Proof-of-Work based on Proof-of Space time that can be used in consensus protocols. Miners do not need to spend wasteful computation to mine blocks, but instead must store data in the network[2] [4].
1.3 Filecoin: Lifecycle of a File
In this section we mentioned the lifecycle for file in Filecoin, as follow:
  1. Put: Clients send information about the file, storage duration, and a small amount of Filecoin to the Storage Market as a bid. Simultaneously, Miners submit asks, competing to offer low cost storage. Deals are made in the Storage Market, on the blockchain.
  2. Send: The Client then sends the file to the Miner, and the Miner adds the file to a sector. The sectors are cryptographically sealed, with verification sent to the blockchain.
  3. Manage: Miners continuously prove they are storing all sectors they agreed to store. The client’s payment is released in installments. Additional currency is minted over time and awarded to Miners as a block reward, proportional to the storage they provide.
  4. Request: A Client requests a file with some payment in Filecoin to the Retrieval Market (off chain); the first Miner to send the file is paid. Eventually, the contract expires and the storage is once again free[5].
Figure 2 Filecoin Lifecycle of a File
1.4 Filecoin is Built with IPFS
The Interplanetary File System (IPFS) is a next-generation protocol to make the Web faster, safer, decentralized, and permanent. Since the initial IPFS release in January 2015, it has gained strong traction in a variety of industries and organizations. Today, IPFS is a foundational technology for many applications in the blockchain industry. Over 5 billion files have been added to IPFS, spanning scientific data and papers, genetic research, video distribution & streaming, 3D modeling, legal documents, entire blockchains and their transactions, video games, and more. IPFS and Filecoin are complementary protocols, and the adoption of the underlying IPFS protocol is a leading indicator of market demand for a faster, safer, decentralized storage service [6].
Some IPFS Users
Figure(3) IPFS users
1.5 IPFS Open Source Community
The IPFS Project is a large community of open source contributors driven to decentralize the web. The community is made up of thousands of developers and users who have been working together for several years, building valuable and widely used software tools. The same seasoned core developers of IPFS are also leading the design and development of Filecoin. The IPFS team has experience building ambitious sotware projects and coordinating thriving developer communities. A significant portion of the IPFS community plans to join the Filecoin network, building tools and applications on this new, exciting platform [ 7].
2. PoC PROJECTS:
2.1 What is PoC?
PoC is abbreviate of Project of Concept which is a process of determining whether a Block-chain project idea can be feasible in a real-world situation. This process is necessary to verify that the idea will function as envisioned. The best part about proof of concept blockchain meaning is that it will help you to get a clear idea of what you are doing before you even get started. Furthermore, the proof of concept in the blockchain niche isn’t for exploring the marketplace for ideas only. Moreover, you won’t determine the best way to start the production process. Instead, you’ll only work on your possible blockchain solution option and see whether it’s capable of being a reality or not. Developing a blockchain proof of concept would require an investment of time, money and resources. In reality, you’d need to get your hands on supporting technologies or even the physical components needed to get the perfect plan. Going through the process is necessary for enterprises to see whether their idea is visible before using all production level equipment for it. According to a recent Gartner survey, 66% of CIOs think that blockchain is here to disrupt the existing marketplaces. And many will spend more than $10 million on the experimentation of the technology. So, if you were confused with what is proof of concept blockchain, now you know just what it is [8]. PoC is used to demonstrate the feasibility and practical potential of any blockchain project in any field such as Energy, Communication, Services, Insurance and Healthcare. A PoC can either be a prototype without any supporting code or any MVP (Minimum Viable Product) with bare feature set. A PoC is a prototype that is used for internal organization who can have a better understanding of a particular project.
2.3 Why Companies Need a Proof of Concept?
Usually, the blockchain proof of concept is awfully popular among the startups in the market. However, proof of concept in blockchain can also be a great tool for the Enterprises as well. Mainly there are three points for needing it.
  • Test out the blockchain project before going for mass production.
  • Identify possible pain points that can make the project not useful.
  • Save an enormous amount of time and money.
Although anyone who comes up with a blockchain project idea will think that it will work, however, proof of concept in blockchain will test out your idea to ensure that you get the best version out of it, which will save up a lot of time and money in the process. Another major reason for you to use proof of concept for blockchain is to ensure that all the stakeholders love your idea and would be interested in investing in it. Whether you are just adding up a new type of feature in the existing blockchain solution or developing it from scratch blockchain proof of concept would let you take the fastest route possible. This relatively gives a different edge in the proof of concept blockchain meaning [9].
2.4 Proof of Concept Phases
Its explain as follows:
Figure (4) explains the steps of blockchain PoC
Step-1: Finding the Proper Blockchain Application Sectors That Adds Value
Let’s start with the first step of the theoretical build-up stage. Many of you don’t really know which application sectors are great for blockchain Proof of concept [10]. That’s why we are outlining some major application sector where you can use your solution. These are:
1.Finance
Let’s start with the financing sector. This sector is relatively popular among the blockchain community. Furthermore, there are many projects already that cover this sector and offer a lucrative solution for major issues. So, in that sense, this sector is quite competitive in case of blockchain PoC development. 2. Medical
The medical sector is another major blockchain application sector at present. There are count-less scenarios where blockchain can truly shine. Hospitals have to deal with a lot of falsifying reports and counterfeit drugs.
3. Asset Management
Maintaining asset in these times are relatively hard due to all the bad players in the market. Simple paper-based record keeping isn’t enough now. Moreover, due to political and other reasons, ownership management is at risk of becoming a corrupted sector.
4. Government
Many governmental institutions are falling behind in the race of digitization. Moreover, every citizen needs a better infrastructure which will give them the security they need. In reality, the government sector is unable to reserve the citizen rights properly.
5. Identity
Identity management is a big hassle when it comes to enterprises. Furthermore, many often impersonate other people’s identity and commit serious crimes. Even in trade financer, many companies have to deal with fake companies and fake documents.
6. IoT
Internet of things is a wonderful sector for proof of concept in blockchain development. Furthermore, this sector is responsible for linking all your smart applications together. Moreover, the device to device connection in a secured platform is necessary.
7. Payments
The payments sector is another awesome application point for your enterprise-grade solution. The blockchain system is more than capable of handling payments, and many of it also offer micro payments. Furthermore, it takes a really small amount of time to send money compared to the traditional banking system. Not to mention the reduction of fees in overseas payment.
8. Supply Chain
Big enterprise needs to have their eyes and ears in every step of the supply chain process. Furthermore, any minor errors could end up in a million dollars of loss. Obviously, you would not want that. Tracking where the raw materials are coming from and whether your products are truly authentic or not is one of the major pain points.
9. Insurance
The insurance industry is facing some serious problems regarding insurance claims and document authentication. Also, the enormous amount of paperwork that every single employee has to fill out is overly dreadful. Detecting fraud, managing all the documents in a secure environment is tough. So, if you introduce a blockchain framework that can solve all these issues would be a huge factor. However, the competition in this marketplace is a bit high; still, with proper blockchain proof of concept, it should be a great opportunity.
Step-2: Defining the Product
In the second stage of the theoretical build-up, you would need to think your blockchain Proof of concept just like any other product. Furthermore, you need to have a solid plan along with full support from all stakeholders. PoC Feature Requirements Define all the features that your enterprise blockchain solution needs. After deciding your blockchain application, you would probably have some idea on what features to add up.
Step-3: Investigating the Technology
After you’ve come up with the solid idea of what features to include and how to focus the road map, you would need to hand them off to the engineering team. Therefore, your team will then research the technology based on your requirements and come up with the best plat-form to develop it on.
  • Advice to make a successful Proof of Concept As we knew, a proof of concept is a project, and like any project it must be clearly defined. That means breaking down the process into these four steps in order to can manage it better.
  • Focus on a Specific Business Issue If you want to make the blockchain PoC framework a success, then you have to start with focusing your real-life problems. At the beginning of the theoretical build-up stage when you are looking for a popular sector of deployment, look for a specific issue. Furthermore, any problem that your idea can fix would be a big plus from the consumers’ end. Many blockchain proof of concept only focuses on the capabilities of the technology only. However, they just don’t resolve any new issues or even old issues.
  • Take Small Steps, Avoid Scope Creeps Another major thing that the enterprises face is the scope creeps. While choosing what features you might need for the blockchain proof of concept many go for too much from the start. However, making a flashier entrance in the market won’t mean 100% success. Further-more, get the ones that you can truly deliver, not the ones you aren’t capable of.
  • Connect All Ideas and Control Them You won’t be the only one coming up with all the ideas. As you already know you’d need to get yourself a good team that will back you up and helps you come up with a compact solution. However, not every single member of your team would agree with the same idea. Furthermore, they have different ideas and vision regarding the blockchain development too.
  • Construct a Thorough Plan Another hurdle in the way of proper proof of concept blockchain is the misinterpretation of the blockchain implementation challenges. Obviously, blockchain implementation isn’t an easy task. At the first stage, it might have many flaws that would end up in possible failure scenarios.
  • Test A Million Times After getting the design done, you’d need to go into the testing phase. However, the problem is many seem to enroll the MVP before properly testing it, which end up in failure. So, test out the MVP a lot of time before making it accessible to the end-users.
  • Collaborate With Other Parties Collaborating with other enterprises could help to take down the overall costing of the block-chain proof of concept. Furthermore, if you are a small to medium level enterprise than collaborating with other parties could help out with the production costing. It will solely depend on the feature or the type of blockchain PoC framework you want to work on.
  • The Right Amount of Staff The right amount of stuff is always necessary to pull off a blockchain proof of concept project. Furthermore, you would need to recruit staffs that have blockchain skills or have an intellectual concept of the technology. Get the necessary amount of stuff with blockchain skill set to perfect the Blockchain Proof of Concept..
3. Conclusion
This report explain a distributed storage scheme based on blockchain technology( Filecoin), and introduces the system design in detail in first part , we have studied about blockchain technology related for Filecoin(decentralized storage network), Filecoin, a highly-anticipated decentralized storage network (under development), announced that there will be more delays before its Mainnet can be officially launched. Created by Protocol Labs, Filecoin has been developed using the InterPlanetary File System (IPFS), an established peer to peer data storage network. The Filecoin software will allow users to trade storage space in an open and decentralized market place.In the second part we mentioned a proof of concept (PoC), The Blockchain Proof of Concept is a demonstration to verify that certain concepts or theories have the potential for real-world application. PoC represents the evidence demonstrating that a project or product is feasible and worthy enough to justify the expenses needed to support and develop it.
REFERENCES
[1] Juan Benet. IPFS — Content Addressed, Versioned, P2P File System. 2014.
[2] Protocol Labs. Filecoin: A Decentralized Storage Network. https://filecoin.io/ filecoin.pdf, 2017.
[3] Benet J. IPFS-content addressed, versioned, P2P file system[J]. arXiv preprint arXiv:1407.3561, 2014.
[4] Liu AD, Du XH, Wang N, Li SZ. Research Progress of Blockchain Technology and its Application in Information Security. Ruan Jian Xue Bao/Journal of Software,2018,6,14:1–24.
[5] Protocol Labs, Inc,[email protected] , Filecoin Primer July 25, 2017.
[6] Protocol Labs, Inc,[email protected] , Filecoin Primer July 25, 2017.
[7] Retrieved from IPFS internal monitoring July 6, 2017.
[8] https://www.projectmanager.com/blog/proof-of-concept-definition.
[9] https://www.blockchainappfactory.com/poc-blockchain-application
[10] https://101blockchains.com/blockchain-proof-of-concept/#prettyPhoto
submitted by CoinEx_Institution to Coinex [link] [comments]

/r/Bitcoin FAQ - Newcomers please read

Welcome to the /Bitcoin Sticky FAQ

You've probably been hearing a lot about Bitcoin recently and are wondering what's the big deal? Most of your questions should be answered by the resources below but if you have additional questions feel free to ask them in the comments.
The following videos are a good starting point for understanding how bitcoin works and a little about its long term potential:
For some more great introductory videos check out Andreas Antonopoulos's YouTube playlists, he is probably the best bitcoin educator out there today. Also have to give mention to James D'Angelo's Bitcoin 101 Blackboard series. Lots of additional video resources can be found at the videos wiki page or /BitcoinTV.
Key properties of bitcoin
Some excellent writing on Bitcoin's value proposition and future can be found here. Bitcoin statistics can be found here, here and here. Developer resources can be found here and here. Peer-reviewed research papers can be found here. The number of times Bitcoin was declared dead by the media can be found here. Scaling resources here, and of course the whitepaper that started it all.

Where can I buy bitcoins?

BuyBitcoinWorldwide.com and Howtobuybitcoin.io are helpful sites for beginners. You can buy or sell any amount of bitcoin and there are several easy methods to purchase bitcoin with cash, credit card or bank transfer. Some of the more popular resources are below, also, check out the bitcoinity exchange resources for a larger list of options for purchases.
Bank Transfer Credit / Debit card Cash
Coinbase Coinbase LocalBitcoins
Gemini Bitstamp LibertyX
GDAX Bitit Mycelium LocalTrader
Bitstamp Cex.io BitQuick
Kraken CoinMama WallofCoins
Xapo BitcoinOTC
Cex.io
itBit
Bitit
Bitsquare
Here is a listing of local ATMs. If you would like your paycheck automatically converted to bitcoin use Cashila or Bitwage.
Note: Bitcoins are valued at whatever market price people are willing to pay for them in balancing act of supply vs demand. Unlike traditional markets, bitcoin markets operate 24 hours per day, 365 days per year. Preev is a useful site that that shows how much various denominations of bitcoin are worth in different currencies. Alternatively you can just Google "1 bitcoin in (your local currency)".

Securing your bitcoins

With bitcoin you can "Be your own bank" and personally secure your bitcoins OR you can use third party companies aka "Bitcoin banks" which will hold the bitcoins for you.
Android iOs Desktop
Mycelium BreadWallet Electrum
CoPay AirBitz Armory
Another interesting use case for physical storage/transfer is the Opendime. Opendime is a small USB stick that allows you to spend Bitcoin by physically passing it along so it's anonymous and tangible like cash.
Note: For increased security, use Two Factor Authentication (2FA) everywhere it is offered, including email!
2FA requires a second confirmation code to access your account, usually from a text message or app, making it much harder for thieves to gain access. Google Authenticator and Authy are the two most popular 2FA services, download links are below. Make sure you create backups of your 2FA codes.
Google Auth Authy
Android Android
iOS iOS

Where can I spend bitcoins?

A more comprehensive list can be found at the Trade FAQ but some more commons ones are below.
Store Product
Gyft Gift cards for hundreds of retailers including Amazon, Target, Walmart, Starbucks, Whole Foods, CVS, Lowes, Home Depot, iTunes, Best Buy, Sears, Kohls, eBay, GameStop, etc.
Steam, HumbleBundle, Games Planet, itch.io, g2g and kinguin For when you need to get your game on
Microsoft Xbox games, phone apps and software
Spendabit, The Bitcoin Shop, Overstock, DuoSearch, The Bitcoin Directory and BazaarBay Retail shopping with millions of results
ShakePay Generate one time use Visa cards in seconds
NewEgg and Dell For all your electronics needs
Cashila, Bitwa.la, Coinbills, Piixpay, Bitbill.eu, Bylls, Coins.ph, Bitrefill, Pey.de, LivingRoomofSatoshi, Hyphen.to, Coinsfer, GetPaidinBitcoin, Coins.co.th, More #1, #2 Bill payment
Foodler, Menufy, Takeaway, Thuisbezorgd NL, Pizza For Coins Takeout delivered to your door!
Expedia, Cheapair, Lot, Destinia, BTCTrip, Abitsky, SkyTours, Fluege the Travel category on Gyft and 9flats For when you need to get away
BoltVM, BitHost VPS service
Cryptostorm, Mullvad, and PIA VPN services
Namecheap, Porkbun For new domain name registration
Stampnik and GetUSPS Discounted USPS Priority, Express, First-Class mail postage
Reddit Gold Premium membership which can be gifted to others
Coinmap, 99Bitcoins and AirBitz are helpful to find local businesses accepting bitcoins. A good resource for UK residents is at wheretospendbitcoins.co.uk.
There are also lots of charities which accept bitcoin donations, such as Wikipedia, Red Cross, Amnesty International, United Way, ACLU and the EFF. You can find a longer list here.

Merchant Resources

There are several benefits to accepting bitcoin as a payment option if you are a merchant;
If you are interested in accepting bitcoin as a payment method, there are several options available;

Can I mine bitcoin?

Mining bitcoins can be a fun learning experience, but be aware that you will most likely operate at a loss. Newcomers are often advised to stay away from mining unless they are only interested in it as a hobby similar to folding at home. If you want to learn more about mining you can read more here. Still have mining questions? The crew at /BitcoinMining would be happy to help you out.
If you want to contribute to the bitcoin network by hosting the blockchain and propagating transactions you can run a full node using this setup guide. Bitseed is an easy option for getting set up. You can view the global node distribution here.

Earning bitcoins

Just like any other form of money, you can also earn bitcoins by being paid to do a job.
Site Description
WorkingForBitcoins, Bitwage, XBTfreelancer, Cryptogrind, Bitlancerr, Coinality, Bitgigs, /Jobs4Bitcoins, Rein Project Freelancing
OpenBazaar, Purse.io, Bitify, /Bitmarket, 21 Market Marketplaces
Watchmybit, Streamium.io, OTika.tv, XOtika.tv NSFW, /GirlsGoneBitcoin NSFW Video Streaming
Bitasker, BitforTip, WillPayCoin Tasks
Supload.com, SatoshiBox, JoyStream, File Army File/Image Sharing
CoinAd, A-ads, Coinzilla.io Advertising
You can also earn bitcoins by participating as a market maker on JoinMarket by allowing users to perform CoinJoin transactions with your bitcoins for a small fee (requires you to already have some bitcoins)

Bitcoin Projects

The following is a short list of ongoing projects that might be worth taking a look at if you are interested in current development in the bitcoin space.
Project Description
Lightning Network, Amiko Pay, and Strawpay Payment channels for network scaling
Blockstream and Drivechain Sidechains
21, Inc. Open source library for the machine payable web
ShapeShift.io Trade between bitcoins and altcoins easily
Open Transactions, Counterparty, Omni, Open Assets, Symbiont and Chain Financial asset platforms
Hivemind and Augur Prediction markets
Mirror Smart contracts
Mediachain Decentralized media library
Tierion and Factom Records & Titles on the blockchain
BitMarkets, DropZone, Beaver and Open Bazaar Decentralized markets
Samourai and Dark Wallet - abandoned Privacy-enhancing wallets
JoinMarket CoinJoin implementation (Increase privacy and/or Earn interest on bitcoin holdings)
Coinffeine and Bitsquare Decentralized bitcoin exchanges
Keybase and Bitrated Identity & Reputation management
Bitmesh and Telehash Mesh networking
JoyStream BitTorrent client with paid seeding
MORPHiS Decentralized, encrypted internet
Storj and Sia Decentralized file storage
Streamium and Faradam Pay in real time for on-demand services
Abra Global P2P money transmitter network
bitSIM PIN secure hardware token between SIM & Phone
Identifi Decentralized address book w/ ratings system
Coinometrics Institutional-level Bitcoin Data & Research
Blocktrail and BitGo Multisig bitcoin API
Bitcore Open source Bitcoin javascript library
Insight Open source blockchain API
Leet Kill your friends and take their money ;)

Bitcoin Units

One Bitcoin is quite large (hundreds of £/$/€) so people often deal in smaller units. The most common subunits are listed below:
Unit Symbol Value Info
millibitcoin mBTC 1,000 per bitcoin SI unit for milli i.e. millilitre (mL) or millimetre (mm)
microbitcoin μBTC 1,000,000 per bitcoin SI unit for micro i.e microlitre (μL) or micrometre (μm)
bit bit 1,000,000 per bitcoin Colloquial "slang" term for microbitcoin
satoshi sat 100,000,000 per bitcoin Smallest unit in bitcoin, named after the inventor
For example, assuming an arbitrary exchange rate of $500 for one Bitcoin, a $10 meal would equal:
For more information check out the Bitcoin units wiki.
Still have questions? Feel free to ask in the comments below or stick around for our weekly Mentor Monday thread. If you decide to post a question in /Bitcoin, please use the search bar to see if it has been answered before, and remember to follow the community rules outlined on the sidebar to receive a better response. The mods are busy helping manage our community so please do not message them unless you notice problems with the functionality of the subreddit. A complete list of bitcoin related subreddits can be found here
Note: This is a community created FAQ. If you notice anything missing from the FAQ or that requires clarification you can edit it here and it will be included in the next revision pending approval.
Welcome to the Bitcoin community and the new decentralized economy!
submitted by BinaryResult to Bitcoin [link] [comments]

A slightly overboard response to my threat model.

For what I hope are obvious reasons, I don't want, and probably will never post my threat model publicly online. However, regardless of that, what I'm sure you will extrapolate from this post is that I live my life, digitally in particular, with a fairly high level threat model. This is not because I'm some super sophisticated criminal mastermind, but rather, I am at this level because I genuinely love playing around with this stuff. And I just happen to understand the importance of privacy and just how vital it is to a truly healthy society. I would like to extend a thanks to ProgressiveArchitect for the sharing of the knowledge they have done on this subreddit, /privacytoolsio, and the like. We may have never interacted, but nevertheless, your input into this community is truly interesting and extremely informative and educating. I'm sure those of you familiar with PA's setup will be able to draw some parallels with mine and their's.
Thank you.
I hope you all enjoy reading this write up.
I run Qubes OS on a Lenovo ThinkPad X230 laptop. Specs for it are as following: - i7-3520M - 16GB RAM - 1TB Samsung 860 Evo SSD - Qualcomm Atheros AR9285 wireless card
Additionally, I used a Raspberry Pi Model 3B+ and a Pomono SPI clip to replace the stock BIOS firmware with coreboot+me_cleaner. This wasn't done out of any "real" concern for the Intel ME (though of course proprietary black-boxes like it should be avoided at all costs and not trusted), but rather for open source enthusiasm and for increased security and faster boot times than what the stock BIOS firmware allows for. On that note about the ME, I don't believe the conspiracy theories that claim that it is a state-sponsored attack method for surveillance. I believe that Intel had good intentions for improving the lives of IT professionals who need to manage hundreds, if not thousands of remote machines. However, it has proven time and time again to be insecure, and I don't need the remote management and the "features" that it provides on my machines.
In Qubes, I use a combination of AppVMs and StandaloneVMs for a variety of different purposes. All VMs use PVH over HVM, except for the Mirage Unikernel Firewall, which uses PV, and the sys-net and sys-usb StandaloneVMs which have to use HVM because of PCI device passthrough. Right now most of my VMs are AppVMs, but for maintenance and compartmentalization reasons, I am considering moving more towards StandaloneVMs, despite the increase in disk space and bandwidth usage for updates.
General route of from Qubes to the Internet for anonymous browsing, general private browsing, accessing Uni services, and Uni-related anonymous browsing respectively: 1. Qubes->sys-mirage-firewall->sys-vpn-wg->sys-corridor->sys-whonix->whonix-ws-15-dvm to the internet. 2. Qubes->sys-mirage-firewall->sys-vpn-wg to the Internet. 3. Qubes->sys-mirage-firewall->uni-vpn-wg to the Internet. 4. Qubes->sys-mirage-firewall->uni-vpn-wg->uni-corridor->uni-whonix->uni-anon-research to the Internet.

(Note: the VPN name is substituted in the "vpn" above. I had to remove it to comply with this subreddit's rules. It is easy to identify what VPN it is as it randomly generates a long numaric string and has fantastic support for WireGuard.)

Web Browsers: - Tor Browser (primary) in a disposable Whonix VM. - Firefox (secondary) with the about:config changes listed on privacytools.io and the following extensions: Cookies AutoDelete, Decentraleyes, HTTPS Everywhere, uBlock Origin (advance user, all third party content blocked and JavaScript disabled), and Vim Vixen. Used in my personal AppVM. - Ungoogled Chromium (Uni only) with standard uBlock Origin and cVim. Used only for Uni-related access in my uni-campus and uni-home AppVMs.
Search Engine: SearX, Startpage, and DuckDuckGo.
Password Manager: KeePassXC.
Office: LibreOffice.
Notes: Standard Notes.
Messaging: Signal Desktop.
Media Playback: mpv.
Emails: I access my personal email within my personal Qubes domain and my Uni email using my Uni Qubes domains. My emails are downloaded to a local repository using isync, send using msmtp, and read using neomutt with html emails converted to plain text using w3m. Emails are sent in plain text too. All of the attachments in the emails (PDFs mostly) are automatically opened in DisposableVMs.
My personal Posteo email account has incoming encryption setup. This means that I emailed my public GPG key to an address correlated to my actual Posteo email address so that all email that I receive is encrypted with my public key and can only be decrypted using my private key. So even if my emails were intercepted and/or my account broken into, the contents of them are safe since they are encrypted as soon as they hit Posteo's servers.
I have setup a number of Posteo aliases that are completely segregated from the email I used to register my account. One of those is considered my "professional" email for my current job. I have another couple aliases, one dedicated for 33mail and another dedicated for Abine Blur. I make use of 33mail alias addresses for catch-all email addresses for registering for accounts that need to be under a username associated with my name anyways. This is for purposes like putting different compartmentalized, but still related emails to put onto my Resume. I use a different alias for each Resume I put out online. That way, when that information gets sold, traded, etc., I can easily trace it back to who sold the information. For example, if I applied for a job online that required me to go through the process of registering an account through a third-party, say 'xyz Inc', the address I would register that account with would be [email protected], or something along those lines. Abine Blur is used much in the same manner but for accounts that don't need to be associated with my real name in any way, say online shopping on Amazon that I do under an many aliases, then ship to various address that I don't live at, but that I can visit with no problems. I use a different Blur address with each service like with 33mail for the same reasoning shown above.
The passwords for the accounts are encrypted and stored locally in each of the domains, however, my private key is stored in my vault domain, so even if an adversary were to compromise the domains, they wouldn't be able to steal my private key without exploiting the hypervisor. They would only be able to wait for me to authorize the usage of my private key in that domain, and even then, it could only be used to decrypt files. That is a concern that they can use my private key to decrypt messages, but they wouldn't be able to steal the key. With my personal email, the emails would also be encrypted locally anyway so they wouldn't be able to read them. My Uni email, in contrast, uses Outlook unfortunately, so there isn't any option to enable incoming encryption, and even if it was, I'm not sure how private it would be anyways.
For those looking for an in depth list of all my VMs, with explanations for the more obscure ones, I have listed them below. I have got a lot of templates, hence why I am considering moving over to StandaloneVMs, but as of right now:

Templates:

StandaloneVMs:

AppVMs:

Phone: Motorola Moto G5s running Lineage OS 16.0 Pie no G-Apps or micro-G with the following Apps: - AdAway: Open Source hosts file-based ad blocker. (Requires root.) - AFWall+: Linux iptables front end. (Requires root.) - Amaze: File manager. - andOPT: 2FA app. I like it since it can export the entries to an AES encrypted file. - AntennaPod: Podcast manager. - AnySoftKeyboard - Simple Calendar - Simple Contacts Pro - DAVx5: CalDav syncronization with my calendar on my Posteo email account. - F-Droid - Fennec F-Droid: Web Browser. Has the same Firefox addons like on Qubes minus Vim Vixen. I used the app Privacy Settings to configure the about:config. - KeePassDX: Password manager. - KISS launcher - Magisk Manager - NewPipe: YouTube app replacement. - S.Notes: Standard Notes. - OsmAnd~: Maps and navigation. - Red Moon: Blue light filter. - SELinuxModeChanger: Exactly as it sounds. (Requires root.) - Shelter: Work profile manager. - Signal: Messaging. - Vinyl Music Player: Music player. - WireGuard: VPN protocol frontend. Is configured to use my VPN account. Is setup as an always-on and connected VPN.
As mentioned, I use Shelter to manage my work profile. In it I isolate the following apps: - Clover: *chan browser. - Orbot: For routing apps through Tor. Is setup as an always-on and connected VPN. - RedReader: Reddit client. - Tor Browser
Over the last several years, I have started using my phone less and less and taking advantage of less of what it has got to offer. I don't check email on my device. I have no real need to browse the Internet on it outside of watching videos using NewPipe, browsing Reddit, and various *chan boards.
On the Smart Phone side of things, I am considering purchasing an older used iPhone SE or 6S for use with MySudo when outside of my home as well as an iPod Touch for use on WiFi only for use inside my home. The iPhone would be kept inside of a faraday bag when I am at home and not using it. It would also be kept in the faraday bag whenever at home to avoid associating that device with my home address. The iPod Touch would be used for MySudo calls instead.
Future outlook and plan for my privacy and security:
To avoid as much deanonymisation of my privacy as possible, I'm only going to specify enough so that anyone reading this can get the jist of my situation in life. I am quite young (age 16 to 25) and I started along this privacy journey when I was even younger. I was never a very heavy social media user, however I did have an online presence if you looked hard enough. My name fortunately is a very common and short name, so that does help to bury information that I was not able to remove further in the vast trenches that is the Internet.
On the digital side of things, I mentioned that I have a dedicated Crypto AppVM for handling crypto currency transactions using Bisq. I have setup a dedicated bank account that I have periodically been transferring money into so that I can trade crypto. Unfortunately, I do not live in the US, so being able to effectively start trades with others is more difficult. I also do not have access to a credit card masking account like privacy.com (that I absolutely would use given the ability). I plan on getting an anonymous VPS to host my own Tor exit node for better speeds and to mitigate the possibility of malicious exit nodes. The country I live in has been a proponent of absolute dragnet surveillance on all activities occurring online and in real life, though the former is far more visible on this subreddit. I will be using crypto with cleaned Bitcoin (as seen with ProgressiveArchitect's setup) for purchasing my VPN service, etc.
With future hardware, to replace my aging laptop, I am very hopeful for Xen, then eventually Qubes OS getting ported to Power9. When that happens I'll be getting a Raptor Computing Blackbird as a desktop. Maybe in the future I'll get a Purism Librem laptop, but for now my corebooted X230 works perfectly for my use cases. On that note, I have successfully build the Heads firmware for the X230 and I was able to get the minimal 4MB image flashed on my laptop. I did revert it back to my coreboot setup after playing around a little with it, and unfortunately I haven't had time since to do a full, complete flash of it.
On the physical/real life side of things, I plan on making use of various Trusts in order to hold assets, say to keep my name from being immediately visible on the title of my car. As of right now I am fortunate enough to have the title of my car under the name of someone who I trust. Unless I am legally required, and where there are immediate and absolute consequences, I use fake names in real life. With Uni, I am enrolled under my real name and address. This is a requirement and it is verified, so there is nothing that I can realistically do about it. As for other services, I plan on setting up a personal mailbox (PMB), etc if possible to use as a real, physical address that is associated with my real name and that is used for things like Government issued ID. In the future when I move again, I plan on renting a place in cash to try and keep my name dissociated with my real address. For those looking for reasoning on why one would want to do that, please read How to be Invisible by J.J. Luna. It's truly the Bible of physical privacy.
At this stage I am just going off on a ramble, so I should cut it short here.
I have just started and I live for this shit.
submitted by ComprehensiveAddict to privacy [link] [comments]

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submitted by uallknowmewhoami to u/uallknowmewhoami [link] [comments]

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submitted by dreadloverman to u/dreadloverman [link] [comments]

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SQ. I compiled information, with sources, so you don't have to.

SQ. I compiled information, with sources, so you don't have to.

Financials

Q1 2019 Shareholder Letter
Q1 2019 Highlights
  • Total net revenue $959 million, +43% YoY.
  • Adjusted revenue $489 million, +59% YoY.
  • Adjusted EBITDA $62 million, +72% YoY.
  • Net income (loss) per share ($0.09), -50% YoY. (Due to investment in Eventbrite, not including Eventbrite net income (loss) per share was ($0.06), 0% YoY)
  • Adjusted net income per share $0.11, +83% improvement YoY.
Q2 2019 Guidance
  • Total net revenue $1.09B to $1.11B
  • Adjusted Revenue $545M to $555M
  • Adjusted EBITDA $90M to $94M
  • Net income (loss) per share $(0.07) to $(0.05)
  • Adjusted EPS (diluted) $0.14 to $0.16
Q4 2018 Shareholder Letter
Q4 2018 Highlights
  • Total net revenue $933 million, +51% YoY.
  • Adjusted revenue $464 million, +64% YoY.
  • Adjusted EBITDA $81 million, +97% YoY.
  • Net loss per share ($0.07), -75% YoY. (Due to investment in Eventbrite, excluding Eventbrite net loss per share was ($0.03), +33% YoY.)
  • Adjusted EPS $0.14, +75% YoY.
Q1 2019 Guidance
  • Total net revenue $918M to $938M
  • Adjusted Revenue $472M to $482M
  • Adjusted EBITDA $47M to $51M
  • Net income (loss) per share $(0.12) to $(0.10)
  • Adjusted EPS (diluted) $0.06 to $0.08

News

Square Quietly Launches Program For CBD Cannabis Company Credit Card Processing | May 22 2019
Companies that sell cannabis products—even those consisting of CBD derived from hemp, which was legalized in the U.S. through the Farm Bill late last year—are continuing to have trouble accessing basic financial services that are available to businesses in other sectors. That includes being able to maintain bank accounts and process their customers' credit cards. “Square is currently conducting an invite-only beta for some CBD products,” a spokesperson for the company said in an email. When asked about the reasons for the launching the new program, which comes after years of refusing to work with CBD companies, the spokesperson said that the company closely watches evolving public policies and strives to create new opportunities for clients.
Square Spends $20 to Acquire Each New Cash App User | May 16, 2019
Square's (NYSE: SQ) Cash App has grown to become a meaningful contributor to the company's top-line growth. The peer-to-peer payments app turned financial multitool is the No. 1 driver of its subscription and services segment, management said at the J.P. Morgan Global Technology, Media and Communications Conference. During that conference, CFO Amrita Ahuja noted the company's per-customer acquisition cost for Cash App is about $20. That's actually quite low relative to other financial services, and even compared to other apps.
Square’s AI Platform Could Transform SQ Stock | May 13, 2019
Eloquent Labs is the developer of Elle, which can converse intelligently with a customer through a conventional online-chat platform without any human input from the service provider. While resolving complex customer-service needs remain currently out of reach, Elle can easily handle simpler-but-distracting tasks like returns and product-tracking.
Square teams up with Postmates for delivery partnership | May 9, 2019
Through the arrangement, Square SQ, sellers will be able to use Postmates couriers to get goods to customers who call up to place orders or visit a store. Merchants will be able to integrate Postmates with their existing Square point-of-sale systems.
Square's Bitcoin Platform Remains Surprisingly Profitable | May 7, 2019
Square's bitcoin revenue accounted for 6.8% of its net revenue during the first quarter, compared to 5.1% in the prior year quarter. However, Square's bitcoin profits only accounted for about 0.2% of its gross profit during the quarter, versus less than 0.1% a year earlier. Square's bitcoin business won't move the needle anytime soon, but its top and bottom line growth is impressive, especially since bitcoin shed roughly 40% of its value over the past 12 months. If bitcoin's price rises again and it attracts more buyers, Square's bitcoin revenue and gross profits could surge much higher.
Instead of viewing Square's bitcoin platform as a separate business, investors should see it as part of the company's long-term plan to lock users into its Cash App. Cash is one of the top peer-to-peer payment apps in the U.S. alongside PayPal's (NASDAQ: PYPL) Venmo and the bank-based Zelle, and it's still growing rapidly. Last quarter Square stated that its Cash App payment volume rose nearly 2.5 times annually. For comparison, PayPal stated that Venmo's payment volume rose 73% annually in its most recent quarter.
How Square's Cash App Makes Money (SQ) | May 6, 2019
Square makes money from Cash App by charging businesses transaction fees for using its software. For a 1.5% transaction fee, individual users can expedite deposits to have them transferred immediately into their bank accounts instead of waiting the standard deposit time. They can also send personal payments from credit cards for a 3% transaction fee.
Village Financial Cooperative partners with Square to bring tech and education to the North Side | Apr 18, 2019
Minnesota’s first black-led credit union is partnering with Square to bring financial education and technology to North Minneapolis. Village Financial Cooperative announced the partnership with the San Francisco-based financial technology company on Thursday. In a statement, the credit union made the case that its mission to empower the black community required it to be at the forefront of financial technology, shaping products and practices. Me’lea Connelly, the credit union’s vision and strategy lead, said the partnership, which includes the city of Minneapolis, was a year in the making. It will officially launch April 27 during “Village Squared: A Black Economic Empowerment Symposium,” one of the events closing out Minneapolis Tech Month.
Square (SQ) to Open New Office, Expand Presence in Seattle | April 11, 2019
Square Inc. SQ recently signed a lease to buy a property in Seattle, in view of opening a new office therein. The office is expected to accommodate approximately 100 workers. We believe that the developments will enable it to carry on with new growth initiatives.
Why Square Is Hiring Cryptocurrency Experts | April 3, 2019
Square (SQ) has announced a plan to hire several cryptocurrency experts. Square’s crypto team will work on an open-source initiative as part of the company’s contribution to the development of a cryptocurrency ecosystem. Although Square says the crypto team it’s planning to create won’t focus on its commercial interests, the company still stands to benefit if the team’s efforts lead to the broader uptake of cryptocurrencies such as Bitcoin. Square operates a cryptocurrency exchange that allows users of its Cash App to buy and sell Bitcoin. In the fourth quarter, Square’s Bitcoin business generated $52.4 million in revenue, up from $43 million in the third quarter. Square is already making a small profit from its Bitcoin business even though the overall business is still seeing losses.
Where Does Square Rank in the Food Ordering Market? | April 3, 2019
Caviar is among America’s top five food ordering services. Square (SQ) runs an online food ordering and delivery business called Caviar. Through the Caviar app, people can order food from more than 3,000 restaurants across the United States and have food delivered to their doorsteps. According to the latest rankings of on-demand food delivery services, Square’s Caviar is one of America’s top online food ordering and delivery providers, but it’s currently holding on to a tiny share of the market.
Square Partners with Washington Nationals to Enable Order-Ahead and In-Seat Card Payments at D.C.’s Nationals Park | March 27, 2019
Square has partnered with the Nationals to create a concession stand that offers the only skip-the-line, order-ahead experience in the ballpark, powered by Caviar Pickup. Fans who open the Caviar app from their seats will be able to order their concessions in advance – including beer and wine for fans 21 and over – and receive an alert when their food is ready to be picked up. The stand will feature food from exclusive Caviar restaurant partners, featured in a rotating series of pop-ups throughout the season. On Opening Day, fans will be able to enjoy Hong Kong-style Chinese food from Tiger Fork, with future food options including biscuits from Mason Dixie and ramen from Toki Underground. Square Terminal, the handheld, all-in-one payment processing hardware device, will also be piloted by roving concessions hawkers at Nationals Park. Square Terminal will allow fans to pay using credit cards or contactless payments like Apple Pay or Google Pay as they purchase food and beverage items from the comfort of their seats. With Square’s point of sale and employee management software built right into Square Terminal, it’s easy for hawkers to quickly accept payments. Square Terminal will help fans who don’t carry cash, and will speed transaction times as hawkers spend less time counting change and more time making sales.
Square introduces invoice app; brings Stand to Japan | Mar. 26, 2019
App allows sellers to create, manage, and send invoices using mobile devices. “With the Square Invoices app, small business owners are able to get paid remotely and access their funds quickly and securely," says Alyssa Henry, seller lead at Square. Separately, in Japan, Square introduces Stand for iPad and its reader for contactless and chip.
Square Expands Omnichannel Offerings with New Square Online Store and a Revamped Square for Retail | March 20, 2019
The new Square Online Store allows sellers to grow their business in person and online, with a professional eCommerce website and integrated tools including Instagram selling, shipping, in-store pickup, and more. The new product also brings the Square Online Store experience to restaurants, allowing sellers to offer seamless online ordering from their website, customized pickup times across multiple locations, and the option to easily pay ahead for online orders. Square for Retail, the point-of-sale app optimized specifically for retailers, has also been completely redesigned with expanded product features. For the first time, business owners who also want to sell online can easily create a professional website and automatically connect their Square for Retail catalog to their Square Online Store, allowing them to sync their items, inventory, prices, and data instantly across online and offline channels. Sellers that use Square for Retail and Square Online Store can also enable their customers to easily shop online and pick up their purchases in store, a feature typically only available to larger retailers. Finally, the Retail point-of-sale app has been redesigned to make managing online orders alongside a brick-and-mortar store quick and intuitive.

Leadership

Jack Dorsey - CEO - $2.75
Jack is CEO and Chairman of Square, CEO of Twitter, and cofounder of both.
Amrita Ahuja - CFO -
Amrita is Square’s Chief Financial Officer. She was previously CFO of Blizzard Entertainment, a division of Activision Blizzard, and held various leadership positions at Fox Networks Group, the Walt Disney Company, and Morgan Stanley.
Kevin Burke - Marketing and Sales Lead
Kevin oversees Square marketing, sales, and partnerships, as well as international markets. Prior to joining Square, Kevin was CMO at Visa Inc.
Jesse Dorogusker - Hardware Lead
Jesse leads hardware product development at Square, including design, cross-functional engineering, manufacturing, and operations. Prior to Square, Jesse was the Director of Engineering for Apple’s iPhone, iPad, and iPod Accessories business.
Brian Grassadonia - Cash App Lead
Brian leads Cash App, the fastest and easiest way to pay individuals or businesses. Brian has held a number of leadership positions at Square including helping to launch the company’s flagship credit card reader.
Alyssa Henry - Seller Lead - $3,870,481
Alyssa leads product management, design, and engineering for Square’s seller facing products including payments, point of sale, Customer Engagement, and Payroll. She previously served as VP of Amazon Web Services (AWS) Storage Services and Product Unit Manager for Microsoft SQL Server Data Access.
Sam Quigley - Risk and Security Lead
Sam leads engineering, product management, and data science for risk and information security. As an early engineering leader at Square, Sam helped to build and scale many of Square’s products.
Gokul Rajaram - Caviar Lead
Gokul oversees Caviar, Square’s growing food ordering service. Prior to Square, he served as Product Director of Ads at Facebook and Product Management Director for Google AdSense.
Jacqueline Reses - Square Capital Lead - $3,972,968
Jackie leads Square Capital, overseeing credit products that provide sellers with access to the funding they need to grow and consumers with the ability to pay for purchases over time. She previously served as Yahoo’s Chief Development Officer and was on the Board of Directors at Alibaba Group. She also serves on the Federal Reserve Bank of San Francisco’s Economic Advisory Council.
Sivan Whiteley - General Counsel - $2,796,591
Sivan oversees Square’s legal, regulatory, compliance, and security operations. A longtime leader of Square’s legal team, she previously held positions at Better Place, eBay, and Bingham McCutchen.
Aaron Zamost - Communications, Policy and People Lead
Aaron leads Square’s communications, government relations, and community affairs efforts, as well as human resources and talent. Prior to joining Square, Aaron led business communications at YouTube and managed corporate communications at Google.

Technical analysis

Descending triangle
Daily Chart
Weekly chart

Institutions

May 16 2019 Buckingham reiterated a buy rating with a $100 price target.
May 2 2019 Needham reiterated a buy rating and lowered their price target from $95 to $90.
May 2 2019 Guggenheim reiterated a buy rating and raised their price target from $92 to $94.
April 9 2019 KeyBanc Capital reiterated an outperform rating with a $100 price target.
April 3 2019 Bernstein initiated a market perform rating with an $80 price target.
March 28 2019 Instinet reiterated a buy rating with a $105 price target.
March 27 2019 Macquarie initiated an outperform rating with a $94 price target.
March 25 2019 RBC Capital reiterated an outperform rating with an $88 price target.
February 27 2019 Canaccord Genuity reiterated a buy rating with an $88 price target.
Vanguard, Blackrock, Jennison, Fidelity, Morgan Stanley, State Street, Allianz, and Goldman Sachs are the largest institutional holders of SQ respectively, collectively making up over 25% of ownership.
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