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Square

Square helps merchants to accept credit card payments. Its mobile payments app Cash App makes it easy to buy and hold Bitcoin.

Square people

Cryptocurrency reviews from the executives, employees and alumni of Square

photo of cryptocurrency expert Tony Arcieri
Tony Arcieri

President of iqlusion inc

photo of cryptocurrency expert Jack Dorsey
Jack Dorsey

Co-founder and CEO of Twitter and Square

Reviews by Square people

🔑 4 positive | 💩 3 negative

🔑

I don't have a view on what the ultimate value of a Bitcoin will be nor do I care. I am interested in Bitcoin plain and simply because I believe it can be and possibly will be the financial and transactional protocol for the global Internet.

2013-11-24 | Full Review

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Late last year, USV invested in Numerai, a hedge fund that uses data scientists all around the world to “crowdsource” stock price predictions. I blogged a bit about Numerai then.

If that business model wasn’t cutting-edge enough for you, the Numerai team has now gone a step further and issued a crypto-token called Numeraire to incent these data scientists to work together to build the best models instead of just competing with each other.

2017-02-22 | Full Review

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At scale, Numerai’s fund is exposed to every model and a diversified portfolio without the risk of relying on a single and imperfect model.

2016-12-12 | Full Review

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To be clear, I don’t think Steem has this all figured out. I don’t own any Steem (or at least I don’t think I do). And I think they have made things a bit too complicated with their tokens and incentives. To their credit, they have taken steps to simplify things, and they are headed in the right direction.

2017-01-05 | Full Review

💩

22 days until Monero has Ed25519 bulletproofs. But the real question is, how many days until a critical vulnerability arising from the naive repurposing of Ed25519 “ref10” arithmetic is discovered?

2018-09-27 | Full Review

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I am excited to see how zero knowledge cryptocurrencies like Zcash interact with the extant regulatory landscape. I think it’s important to remember that these techniques provide privacy that (IMO) is a *requirement* for a *business* use case..... With zero-knowledge proofs, privacy and transparency are very much compatible. You can prove properties of transaction flows in zero knowledge.

2018-07-13 | Full Review

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Bitcoin continues to be misunderstood by many people in the cryptocurrency space who want it to be more than it has to be for it to succeed. . . . Yes, Bitcoin has all sorts of drawbacks as a blockchain, but it is the one cryptocurrency with a widely understood use case: censorship resistant store of wealth. Fiat currencies, precious metals and real estate (including land) all have more government control and/or are more difficult to move around and transact in than Bitcoin. With everything crazy that’s going on in the world politically, the demand for censorship resistant wealth storage is high and growing.

2017-10-30 | Full Review

💩

Tether is kind of like USD, except instead of being backed by the United States government, it was created by a guy who fled the U.S. following allegations of raping children and who claims if he needs more money, he just invents a new token.

2018-11-25 | Full Review

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If all of us who own Ethereum could go to [Vitalik Buterin] and say, “Look, this thing you got in Switzerland is not working. Fire these fuckers who don't know what the hell they're doing, and put someone great in there who could build this thing into a monster”—then that's what we would do. There's no mechanism to do that, and that's painful—just sitting here, holding that asset and watching them whittle the value of the asset away.

2018-10-23 | Full Review

💩

Ethereum faces a strong headwind not only from th[e] change in sentiment [on ICOs] but also from relatively costly and slow on-chain computation. The bull case for Ethereum is that sometime in 2018 we will see a couple of Ethereum-based projects launch successfully and get broad adoption *AND* progress is made on Ethereum scaling (either directly or through projects such as Raiden or Plasma). The bear case is that at least one or possibly both of these don’t happen.

2017-10-30 | Full Review

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Decred’s consensus algorithm is a hybrid proof of work, proof of stake system that’s different from Bitcoin’s, in that Bitcoin is only proof of work.

In proof of work, the machines that run the network and verify transactions are the ones that ultimately have all the governance power. That alienates the actual users because if you hold bitcoin but don’t have a machine plugged into the network, then you don’t have that much of a say.

A hybrid proof of work-proof of stake system is a system of checks and balances between the users and the machines, in that the machines in Decred are producing blocks much in the same way that Bitcoin’s machines are producing blocks, but each block has to be vetted and validated by the proof-of-stake layer and the proof-of-stake layer, which is driven by the asset holders, the holders of the Decred coin.

2018-06-12 | Full Review

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Credit has greased economic wheels for millennia, and Maker is the world’s first 100% software-based, community owned and operated credit facility. As a family of smart contracts operating on Ethereum, the system offers secured loans of equal cost to anyone in the world. The by-product of loan generation is dai, a stablecoin collateralized using on-chain rules and assets.

2019-01-23 | Full Review

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Bitcoin is resilient. Bitcoin is principled. Bitcoin is native to internet ideals. And it’s a great brand.

2019-02-05 | Full Review

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We are also seeing signs that users like using crypto-assets in mobile and web apps. Kin, built by our portfolio company Kik, has become one of the most used cryptocurrencies in the world.

2019-09-04 | Full Review

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Today marks a big milestone for the Algorand Core Team and Algorand Foundation. They conducted the first on-chain Algorand auction and it came off without a hitch....

The auctions themselves are meaningful in several ways. They show off a capability that is built natively into the Algorand blockchain. This capability will be useful for all sorts of auctions, not just of Algos but of other items. This is a novel way of combining price discovery with ongoing funding for the development of Algorand

2019-06-19 | Full Review