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Home Bitcoin

Clarification on false value in Script

Moussa by Moussa
November 6, 2024
in Bitcoin
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From my interpretation of the bitcoin Script Wiki and the rust-bitcoin codebase, two items on the stack get interpreted by bitcoin Script as false:

  1. The empty array []
  2. The single byte 0x00

Q1: Is it correct to think that a 2-byte long or more array of 0s (even though as a number would get interpreted as 0) would not be interpreted by bitcoin Script as false? For example the script OP_PUSHBYTES_4 <0x00000000> would put a byte array of 0s on the stack but still equate to true? On the other hand the script OP_PUSHBYTES_1 <0x00> would interpret as false?

Q2: Will an opcode like OP_NOT work with/interpret both of the above as false? (the docs on rust-bitcoin, Push 1 if the top item is zero; otherwise, push 0. are not very explicit in that sense, and the bitcoin wiki is even worse).



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