Module sv::script::op_codes

Script commands

Constants

OP_0	Pushes 0 onto the stack
OP_0NOTEQUAL	Returns 0 if the input is 0. 1 otherwise.
OP_1NEGATE	Pushes -1 onto the stack
OP_1	Pushes 1 onto the stack
OP_1ADD	Adds 1 to the input
OP_1SUB	Subtracts 1 from the input
OP_2	Pushes 2 onto the stack
OP_2DROP	Removes the top two items from the stack
OP_2DUP	Duplicates the top two stack items
OP_2OVER	Copies the pair of items two spaces back to the front
OP_2ROT	The fifth and sixth items back are moved to the top of the stack
OP_2SWAP	Swaps the top two pairs of items
OP_3	Pushes 3 onto the stack
OP_3DUP	Duplicates the top three stack items
OP_4	Pushes 4 onto the stack
OP_5	Pushes 5 onto the stack
OP_6	Pushes 6 onto the stack
OP_7	Pushes 7 onto the stack
OP_8	Pushes 8 onto the stack
OP_9	Pushes 9 onto the stack
OP_10	Pushes 10 onto the stack
OP_11	Pushes 11 onto the stack
OP_12	Pushes 12 onto the stack
OP_13	Pushes 13 onto the stack
OP_14	Pushes 14 onto the stack
OP_15	Pushes 15 onto the stack
OP_16	Pushes 16 onto the stack
OP_ABS	The input is made positive
OP_ADD	Adds a to b
OP_AND	Boolean and between each bit in the inputs
OP_BIN2NUM	Converts byte sequence x into a numeric value
OP_BOOLAND	If both a and b are not empty, the output is 1. Otherwise, 0.
OP_BOOLOR	If a or b is not empty, the output is 1. Otherwise, 0.
OP_CAT	Concatenates two byte sequences
OP_CHECKLOCKTIMEVERIFY	Marks transaction as invalid if the top stack item is greater than the transaction's lock_time
OP_CHECKMULTISIG	Puts 1 on the stack if m of n signatures authorize the public key and transaction hash. Otherwise 0.
OP_CHECKMULTISIGVERIFY	Same as OP_CHECKMULTISIG, but OP_VERIFY is executed afterward
OP_CHECKSEQUENCEVERIFY	Marks transaction as invalid if the top stack item is less than the transaction's sequence used for relative lock time
OP_CHECKSIG	Puts 1 on the stack if the signature authorizes the public key and transaction hash. Otherwise 0.
OP_CHECKSIGVERIFY	Same as OP_CHECKSIG, but OP_VERIFY is executed afterward
OP_CODESEPARATOR	Marks the part of the script after which the signature will begin matching
OP_DEPTH	Puts the number of stack items onto the stack
OP_DIV	Divides a by b
OP_DROP	Drops the top stack value
OP_DUP	Duplicates the top stack item
OP_ELSE	If the preceding OP_IF or OP_NOTIF statemetns were not executed, then statements are executed.
OP_ENDIF	Ends an if-else block
OP_EQUAL	Returns 1 if the inputs are exactly equal, 0 otherwise
OP_EQUALVERIFY	Same as OP_EQUAL, but runs OP_VERIFY afterward
OP_FALSE	Pushes 0 onto the stack
OP_FROMALTSTACK	Moves the top item on the alt stack to the main stack
OP_GREATERTHAN	Returns 1 if a is greater than b. Otherwise, 0.
OP_GREATERTHANOREQUAL	Returns 1 if a is greater than or equal to b. Otherwise, 0.
OP_HASH160	The input is hashed twice: first with SHA-256 and then with RIPEMD-160
OP_HASH256	The input is hashed two times with SHA-256
OP_IF	If the top stack is true, statements are executed. Top stack value is removed.
OP_IFDUP	Duplicates the top stack value if it is not zero
OP_LESSTHAN	Returns 1 if a is less than b. Otherwise, 0.
OP_LESSTHANOREQUAL	Returns 1 if a is less than or equal to b. Otherwise, 0.
OP_MAX	Returns the larger of a and b
OP_MIN	Returns the smaller of a and b
OP_MOD	Returns the remainder after dividing a by b
OP_NEGATE	The sign of the input is flipped
OP_NIP	Removes the second-to-top stack item
OP_NOP	Does nothing
OP_NOT	If the input is 0 or 1, it is flipped. Otherwise, the output will be 0.
OP_NOTIF	If the top stack is false, statements are executed. Top stack value is removed.
OP_NUM2BIN	Converts numeric value a into a byte sequence of length b
OP_NUMEQUAL	Returns 1 if the numbers are equal. Otherwise, 0.
OP_NUMEQUALVERIFY	Same as OP_NUMEQUAL, but runs OP_VERIFY afterward
OP_NUMNOTEQUAL	Returns 1 if the numbers are not equal. Otherwise, 0.
OP_OR	Boolean or between each bit in the inputs
OP_OVER	Copies the second-to-top stack item to the top
OP_PICK	The item n back in the stack is copied to the top
OP_PUSH	Offset by n to push n bytes onto the stack, where n: [1-75]
OP_PUSHDATA1	The next byte sets the number of bytes to push onto the stack
OP_PUSHDATA2	The next two bytes sets the number of bytes to push onto the stack
OP_PUSHDATA4	The next four bytes sets the number of bytes to push onto the stack
OP_RETURN	Marks a statements as invalid
OP_RIPEMD160	The input is hashed using RIPEMD-160
OP_ROLL	The item n back in the stack is moved to the top
OP_ROT	The top three items on the stack are rotated to the left
OP_SHA1	The input is hashed using SHA-1
OP_SHA256	The input is hashed using SHA-256
OP_SIZE	Pushes the byte sequence length of the top stack item without popping it
OP_SPLIT	Splits the byte sequence at position n
OP_SUB	Subtracts b from a
OP_SWAP	The top two items on the stack are swapped
OP_TOALTSTACK	Moves the top item on the main stack to the alt stack
OP_TRUE	Pushes 1 onto the stack
OP_TUCK	The item at the top of the stack is copied and inserted before the second-to-top item
OP_VERIFY	Marks a statement as invalid if the top stack value is false. Top stack value is removed.
OP_WITHIN	Returns 1 if x is within the specified range, left inclusive. Otherwise, 0.
OP_XOR	Boolean exclusive or between each bit in the inputs