3 ms·

Interesting, but why Turing?

• exo762 13y ago
  Because OP doesn't understand why bitcoin "script" is limited in first place.
  • oleganza 13y ago
    OP understands better than many of us why and how Bitcoin works. Script execution is limited by the fee (which is paid upfront). If the contract is paid to take 10 ops and 2 slots, if it uses more than that or takes longer than 10 ops to execute, it will be aborted and money will forever be locked.
    • nullc 13y ago
      But these fees are only paid to miners— not all the other nodes validating the transactions. If only miners validate, what will keep miners honest (e.g. from writing themselves a blank check for more coins).
      • oleganza 13y ago
        That's the same argument about non-mining Bitcoin nodes. Those who choose maximum security have to perform thousands of ECDSA checks and store the whole blockchain. For everyone else there's Masterc... mobile app. Your argument is valid, but not (imho) specific to Ethereum.
        • nullc 13y ago
          The distinction for Bitcoin is that a smartphone can keep up with the maximum possible computation load from validation. The design is very purposefully limited to keep the validation computation so cheap that it is effectively free, and no amount of fee paying can convince miners to allow more computation since the limits are a property of the system enforced by all nodes just as the supply of coin is limited. I think it's a less useful mental model to think of what Bitcoin is doing as execution. What a Bitcoin script is really is a witness of an execution that the signer performed— proof that he executed it faithfully— rather than the computation itself. It's just a product of engineering that the simplest (to implement) way to verify execution is to perform it again, but its not intrinsic.