Oh fantastic, it took me a while to understand how this works, but its pretty simple (Blockstack is not an altcoin):<p>Blockstack nodes simultaneously run the Bitcoin daemon, and when they see a transaction on the blockchain with particular data in OP_RETURN, they add that data to the Blockstack meta-chain. Blockstack nodes have an incentive to mine the Blockstack meta-chain, because they get paid for registration of names.<p>What I'm interested to know, is whether the Blockstack chain allows for arbitrary key/value pairings, or whether it is intended to be just for DNS resolution. I can see a lot of utility emerging from a decentralized KVP-storage blockchain, where a user can (for example) register a username as a key, and a Bitcoin address as the value.<p>If something like that is possible, we could finally have a system that solves Zooko's Triangle. Decentralized and Secure are taken care of, and this allows for a user to send funds to a Human-Meaningful address (via a lookup in the KVP chain).