bitcoin scripting language

Description OP_checklocktimeverify (previously OP_NOP2) 177 0xb1 x x / fail Marks transaction as invalid if the top stack item is greater than the transaction's nLockTime field, otherwise script evaluation continues as though an OP_NOP was executed. OP_SHA1 167 0xa7 in hash The input is hashed using SHA-1. OP_lessthanorequal 161 0xa1 a b out Returns 1 if a is less than or equal to b, 0 otherwise.

bitcoin scripting language

OP_2ROT 113 0x71 x1 x2 x3 x4 x5 x6 x3 x4 x5 x6 x1 x2 The fifth and sixth items back are moved to the top of the stack. This was used by early versions of Bitcoin where people paid directly to IP addresses, before Bitcoin addresses were introduced. The inclusion of the utxo ensures that the author indeed owns the amount of bitcoin he is looking to send to Mitchell. Users are now only left with a signature and a public key. OP_ADD 147 0x93 a b out a is added. The precise semantics are described in BIP 0112.

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