Zcash cofounder and executive director of Tachyon, @ebfull on scaling Zcash: “We’re taking the cryptography that’s at the core of the private payments that take place in our protocol, and we’re removing all the cryptographic bottlenecks that are on the inside. So, if I had to really describe what we’re doing briefly, is that we’re basically taking SNARKs, which are these things that we have inside of Zcash, and we’re adding something called a recursive proof to them. And these are really cool. Right now in Zcash, when you send private payments, invariably you’re going to have multiple different things happening inside your transaction. So the proofs that you put inside them are quite large. They’re like seven kilobytes on average for a standard payment. And sometimes they’re a little bit larger because of random reasons that aren’t that interesting. Inside of our thing, because we use recursive proofs, these proofs prove that other proofs have validated properly. And that’s sort of the essence of how they work. So it’s like proofs all the way down. The proofs can prove other instances of themselves, and so on and so on. And you can build all sorts of crazy applications with this. And one simple example is just this. So in Tachyon, when you create a transaction, it actually doesn’t have a marginal increase in size of the transaction. So it actually, in our specific design, it’s not any larger than what we do in Orchard already. So we can do the same principle with multiple transactions in a block. So a miner will take all the transactions and take all the proofs out, or these things called stamps, and combine them together into one proof, an aggregate that’s about 17 kilobytes in size. And we can shove as many transactions as possible into the block. Actually, with the current block size, or the block size that we’re going to have in less than a month, you should be able to at least do about 150 TPS with that. But the real goal is just to enable the sort of asymptotic improvement here.”