opcodetype

Synopsis

Declared in <script/script.h>

enum opcodetype;

Members

Name	Description
`OP_0`	Pushes an empty byte array (numeric zero / false) onto the stack.
`OP_FALSE`	Alias for OP_0.
`OP_PUSHDATA1`	Pushes the next byte's count of bytes onto the stack.
`OP_PUSHDATA2`	Pushes the next two bytes' count of bytes onto the stack.
`OP_PUSHDATA4`	Pushes the next four bytes' count of bytes onto the stack.
`OP_1NEGATE`	Pushes the number -1 onto the stack.
`OP_RESERVED`	Reserved opcode; makes the transaction invalid if executed.
`OP_1`	Pushes the number 1 onto the stack.
`OP_TRUE`	Alias for OP_1.
`OP_2`	Pushes the number 2 onto the stack.
`OP_3`	Pushes the number 3 onto the stack.
`OP_4`	Pushes the number 4 onto the stack.
`OP_5`	Pushes the number 5 onto the stack.
`OP_6`	Pushes the number 6 onto the stack.
`OP_7`	Pushes the number 7 onto the stack.
`OP_8`	Pushes the number 8 onto the stack.
`OP_9`	Pushes the number 9 onto the stack.
`OP_10`	Pushes the number 10 onto the stack.
`OP_11`	Pushes the number 11 onto the stack.
`OP_12`	Pushes the number 12 onto the stack.
`OP_13`	Pushes the number 13 onto the stack.
`OP_14`	Pushes the number 14 onto the stack.
`OP_15`	Pushes the number 15 onto the stack.
`OP_16`	Pushes the number 16 onto the stack.
`OP_NOP`	Does nothing.
`OP_VER`	Reserved opcode; makes the transaction invalid if executed.
`OP_IF`	Executes the following block if the top stack value is true.
`OP_NOTIF`	Executes the following block if the top stack value is false.
`OP_VERIF`	Reserved opcode; makes the transaction invalid even when unexecuted.
`OP_VERNOTIF`	Reserved opcode; makes the transaction invalid even when unexecuted.
`OP_ELSE`	Executes the following block if the preceding OP_IF/OP_NOTIF block was not.
`OP_ENDIF`	Ends an OP_IF/OP_NOTIF/OP_ELSE block.
`OP_VERIFY`	Marks the transaction invalid if the top stack value is not true.
`OP_RETURN`	Marks the transaction invalid and the output provably unspendable.
`OP_TOALTSTACK`	Moves the top item from the main stack to the alt stack.
`OP_FROMALTSTACK`	Moves the top item from the alt stack to the main stack.
`OP_2DROP`	Removes the top two stack items.
`OP_2DUP`	Duplicates the top two stack items.
`OP_3DUP`	Duplicates the top three stack items.
`OP_2OVER`	Copies the pair of items two spaces back to the top.
`OP_2ROT`	Moves the fifth and sixth items to the top of the stack.
`OP_2SWAP`	Swaps the top two pairs of items.
`OP_IFDUP`	Duplicates the top item if it is not zero.
`OP_DEPTH`	Pushes the number of stack items onto the stack.
`OP_DROP`	Removes the top stack item.
`OP_DUP`	Duplicates the top stack item.
`OP_NIP`	Removes the second-to-top stack item.
`OP_OVER`	Copies the second-to-top item to the top of the stack.
`OP_PICK`	Copies the item n back in the stack to the top.
`OP_ROLL`	Moves the item n back in the stack to the top.
`OP_ROT`	Rotates the top three items to the left.
`OP_SWAP`	Swaps the top two stack items.
`OP_TUCK`	Copies the top item and inserts it below the second item.
`OP_CAT`	Disabled opcode; would concatenate two byte strings.
`OP_SUBSTR`	Disabled opcode; would return a substring of a byte string.
`OP_LEFT`	Disabled opcode; would return the left part of a byte string.
`OP_RIGHT`	Disabled opcode; would return the right part of a byte string.
`OP_SIZE`	Pushes the byte length of the top stack item.
`OP_INVERT`	Disabled opcode; would flip all bits of the top item.
`OP_AND`	Disabled opcode; would compute the bitwise AND of two items.
`OP_OR`	Disabled opcode; would compute the bitwise OR of two items.
`OP_XOR`	Disabled opcode; would compute the bitwise XOR of two items.
`OP_EQUAL`	Pushes true if the top two items are equal, otherwise false.
`OP_EQUALVERIFY`	Runs OP_EQUAL then OP_VERIFY.
`OP_RESERVED1`	Reserved opcode; makes the transaction invalid if executed.
`OP_RESERVED2`	Reserved opcode; makes the transaction invalid if executed.
`OP_1ADD`	Adds 1 to the top item.
`OP_1SUB`	Subtracts 1 from the top item.
`OP_2MUL`	Disabled opcode; would multiply the top item by 2.
`OP_2DIV`	Disabled opcode; would divide the top item by 2.
`OP_NEGATE`	Negates the sign of the top item.
`OP_ABS`	Replaces the top item with its absolute value.
`OP_NOT`	Pushes 1 if the top item is 0, otherwise 0.
`OP_0NOTEQUAL`	Pushes 0 if the top item is 0, otherwise 1.
`OP_ADD`	Adds the top two items.
`OP_SUB`	Subtracts the top item from the second item.
`OP_MUL`	Disabled opcode; would multiply the top two items.
`OP_DIV`	Disabled opcode; would divide the second item by the top item.
`OP_MOD`	Disabled opcode; would compute the remainder of a division.
`OP_LSHIFT`	Disabled opcode; would shift the second item left.
`OP_RSHIFT`	Disabled opcode; would shift the second item right.
`OP_BOOLAND`	Pushes true if both of the top two items are nonzero.
`OP_BOOLOR`	Pushes true if either of the top two items is nonzero.
`OP_NUMEQUAL`	Pushes true if the top two numbers are equal.
`OP_NUMEQUALVERIFY`	Runs OP_NUMEQUAL then OP_VERIFY.
`OP_NUMNOTEQUAL`	Pushes true if the top two numbers are not equal.
`OP_LESSTHAN`	Pushes true if the second number is less than the top number.
`OP_GREATERTHAN`	Pushes true if the second number is greater than the top number.
`OP_LESSTHANOREQUAL`	Pushes true if the second number is less than or equal to the top.
`OP_GREATERTHANOREQUAL`	Pushes true if the second number is greater than or equal to the top.
`OP_MIN`	Pushes the smaller of the top two numbers.
`OP_MAX`	Pushes the larger of the top two numbers.
`OP_WITHIN`	Pushes true if the third number is within the range [second, top).]
`OP_RIPEMD160`	Hashes the top item with RIPEMD-160.
`OP_SHA1`	Hashes the top item with SHA-1.
`OP_SHA256`	Hashes the top item with SHA-256.
`OP_HASH160`	Hashes the top item with SHA-256 then RIPEMD-160.
`OP_HASH256`	Hashes the top item with SHA-256 twice.
`OP_CODESEPARATOR`	Marks the point from which the script is signed.
`OP_CHECKSIG`	Verifies a signature against a public key and pushes the result.
`OP_CHECKSIGVERIFY`	Runs OP_CHECKSIG then OP_VERIFY.
`OP_CHECKMULTISIG`	Verifies m signatures against n public keys.
`OP_CHECKMULTISIGVERIFY`	Runs OP_CHECKMULTISIG then OP_VERIFY.
`OP_NOP1`	Reserved no-op opcode for future upgrades.
`OP_CHECKLOCKTIMEVERIFY`	Marks the transaction invalid if the top item is greater than nLockTime (BIP 65).
`OP_NOP2`	Former no-op, now OP_CHECKLOCKTIMEVERIFY.
`OP_CHECKSEQUENCEVERIFY`	Marks the transaction invalid if the top item is greater than the input sequence (BIP 112).
`OP_NOP3`	Former no-op, now OP_CHECKSEQUENCEVERIFY.
`OP_NOP4`	Reserved no-op opcode for future upgrades.
`OP_NOP5`	Reserved no-op opcode for future upgrades.
`OP_NOP6`	Reserved no-op opcode for future upgrades.
`OP_NOP7`	Reserved no-op opcode for future upgrades.
`OP_NOP8`	Reserved no-op opcode for future upgrades.
`OP_NOP9`	Reserved no-op opcode for future upgrades.
`OP_NOP10`	Reserved no-op opcode for future upgrades.
`OP_CHECKSIGADD`	Adds a signature check result to an accumulator (Tapscript, BIP 342).
`OP_INVALIDOPCODE`	Represents an invalid or unknown opcode.

Non-Member Functions

Name	Description
`GetOpName`	Returns the mnemonic name of an opcode.
`IsOpSuccess`	Test for OP_SUCCESSx opcodes as defined by BIP342.
`IsPushdataOp`	Test whether an opcode is a data-push operation.