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Byteball (https://byteball.org/ https://byteball.org/ has declarative smart contracts!

• Animats 9y ago
  That looks interesting. I just skimmed the white paper. It's not clear what their contracts can do, though. They need more examples. The underlying DAG idea has potential. You could have two half-transactions happening on separate subtrees, where A is buying X from B and B is paying Y to A. So A broadcasts "A will buy X from B when B pays Y to A", and B broadcasts "B will pay Y to A when A buys X from B". When the matching half-transactions acquire a common child, the transaction commits. It's a true "meeting of the minds".
  • antocv 9y ago
    Yes they do have that what you are describing, "smart conditional payments". You can for example trade user-defined (possible private) assets (tokens) in that way - "Ill send you my bytes for your blackbytes, I send bytes to this address and me can sweep them back after 4 hours, or you can sweep them if payment of X amount of blackbytes is made to my address". It has oracles as well.