a b out a is added. OP_checkmultisigverify 175 0xaf x sig1 sig2. Byte vectors on the stack are not allowed to be more than 520 bytes long.
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Anyone-Can-Spend Outputs Conversely a transaction can be made spendable by anyone at all: scriptPubKey: (empty) scriptSig: OP_true With some software changes such transactions can be used as a way to donate funds to miners in addition to transaction fees: any miner who mines such. number of public keys Nothing / fail Same as OP_checkmultisig, but OP_verify is executed afterward. Crypto Word Opcode Hex Input Output Description OP_ripemd160 166 0xa6 in hash The input is hashed using ripemd-160. Historically the Scriptpubkey was named so as it contained the public key or address to be spent from.e. Does not mark transaction as invalid. OP_lshift 152 0x98 a b out Shifts a left b bits, preserving sign. OP_NOT 145 0x91 in out If the input is 0 or 1, it is flipped. Starting with the subsequent public key, it compares the second signature against each remaining public key until it finds an ecdsa match. There are conditional operators which give the result true or false which in the case of validating a transaction are true if the signature is valid. 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. Incentivized finding of hash collisions In 2013 Peter Todd created scripts that result in true if a hash collision is found. OP_tuck 125 0x7d x1 x2 x2 x1 x2 The item at the top of the stack is copied and inserted before the second-to-top item.