# Module BSV::Script::Opcodes All Bitcoin script opcodes as integer constants. Includes data push operations, flow control, stack manipulation, splice, bitwise, arithmetic, and cryptographic opcodes. Also provides {.name_for} for reverse lookup (opcode byte → name). ## Constants ### `NAME` Reverse lookup: opcode byte → name string. Sorted so canonical names (OP_0, OP_1) win over aliases (OP_FALSE, OP_TRUE) regardless of Module#constants enumeration order. ### `OP_0` Push value ### `OP_0NOTEQUAL` Not documented. ### `OP_1` Not documented. ### `OP_10` Not documented. ### `OP_11` Not documented. ### `OP_12` Not documented. ### `OP_13` Not documented. ### `OP_14` Not documented. ### `OP_15` Not documented. ### `OP_16` Not documented. ### `OP_1ADD` Arithmetic ### `OP_1NEGATE` Not documented. ### `OP_1SUB` Not documented. ### `OP_2` Not documented. ### `OP_2DIV` Not documented. ### `OP_2DROP` Not documented. ### `OP_2DUP` Not documented. ### `OP_2MUL` Not documented. ### `OP_2OVER` Not documented. ### `OP_2ROT` Not documented. ### `OP_2SWAP` Not documented. ### `OP_3` Not documented. ### `OP_3DUP` Not documented. ### `OP_4` Not documented. ### `OP_5` Not documented. ### `OP_6` Not documented. ### `OP_7` Not documented. ### `OP_8` Not documented. ### `OP_9` Not documented. ### `OP_ABS` Not documented. ### `OP_ADD` Not documented. ### `OP_AND` Not documented. ### `OP_BIN2NUM` Not documented. ### `OP_BOOLAND` Not documented. ### `OP_BOOLOR` Not documented. ### `OP_CAT` Splice ### `OP_CHECKLOCKTIMEVERIFY` Not documented. ### `OP_CHECKMULTISIG` Not documented. ### `OP_CHECKMULTISIGVERIFY` Not documented. ### `OP_CHECKSEQUENCEVERIFY` Not documented. ### `OP_CHECKSIG` Not documented. ### `OP_CHECKSIGVERIFY` Not documented. ### `OP_CODESEPARATOR` Not documented. ### `OP_DEPTH` Not documented. ### `OP_DIV` Not documented. ### `OP_DROP` Not documented. ### `OP_DUP` Not documented. ### `OP_ELSE` Not documented. ### `OP_ENDIF` Not documented. ### `OP_EQUAL` Not documented. ### `OP_EQUALVERIFY` Not documented. ### `OP_FALSE` Not documented. ### `OP_FROMALTSTACK` Not documented. ### `OP_GREATERTHAN` Not documented. ### `OP_GREATERTHANOREQUAL` Not documented. ### `OP_HASH160` Not documented. ### `OP_HASH256` Not documented. ### `OP_IF` Not documented. ### `OP_IFDUP` Not documented. ### `OP_INVALIDOPCODE` Not documented. ### `OP_INVERT` Bitwise logic ### `OP_LEFT` Not documented. ### `OP_LESSTHAN` Not documented. ### `OP_LESSTHANOREQUAL` Not documented. ### `OP_LSHIFT` Not documented. ### `OP_LSHIFTNUM` Not documented. ### `OP_MAX` Not documented. ### `OP_MIN` Not documented. ### `OP_MOD` Not documented. ### `OP_MUL` Not documented. ### `OP_NEGATE` Not documented. ### `OP_NIP` Not documented. ### `OP_NOP` Flow control ### `OP_NOP1` Expansion / NOP upgrades ### `OP_NOP10` Not documented. ### `OP_NOP11` Extended NOP range (0xba–0xfc) — unnamed, reserved for future use. Defined so that to_asm/from_asm can round-trip scripts containing them. ### `OP_NOP12` Not documented. ### `OP_NOP13` Not documented. ### `OP_NOP14` Not documented. ### `OP_NOP15` Not documented. ### `OP_NOP16` Not documented. ### `OP_NOP17` Not documented. ### `OP_NOP18` Not documented. ### `OP_NOP19` Not documented. ### `OP_NOP20` Not documented. ### `OP_NOP21` Not documented. ### `OP_NOP22` Not documented. ### `OP_NOP23` Not documented. ### `OP_NOP24` Not documented. ### `OP_NOP25` Not documented. ### `OP_NOP26` Not documented. ### `OP_NOP27` Not documented. ### `OP_NOP28` Not documented. ### `OP_NOP29` Not documented. ### `OP_NOP30` Not documented. ### `OP_NOP31` Not documented. ### `OP_NOP32` Not documented. ### `OP_NOP33` Not documented. ### `OP_NOP34` Not documented. ### `OP_NOP35` Not documented. ### `OP_NOP36` Not documented. ### `OP_NOP37` Not documented. ### `OP_NOP38` Not documented. ### `OP_NOP39` Not documented. ### `OP_NOP4` NOP aliases for the Chronicle slots (preserved for compatibility) ### `OP_NOP40` Not documented. ### `OP_NOP41` Not documented. ### `OP_NOP42` Not documented. ### `OP_NOP43` Not documented. ### `OP_NOP44` Not documented. ### `OP_NOP45` Not documented. ### `OP_NOP46` Not documented. ### `OP_NOP47` Not documented. ### `OP_NOP48` Not documented. ### `OP_NOP49` Not documented. ### `OP_NOP5` Not documented. ### `OP_NOP50` Not documented. ### `OP_NOP51` Not documented. ### `OP_NOP52` Not documented. ### `OP_NOP53` Not documented. ### `OP_NOP54` Not documented. ### `OP_NOP55` Not documented. ### `OP_NOP56` Not documented. ### `OP_NOP57` Not documented. ### `OP_NOP58` Not documented. ### `OP_NOP59` Not documented. ### `OP_NOP6` Not documented. ### `OP_NOP60` Not documented. ### `OP_NOP61` Not documented. ### `OP_NOP62` Not documented. ### `OP_NOP63` Not documented. ### `OP_NOP64` Not documented. ### `OP_NOP65` Not documented. ### `OP_NOP66` Not documented. ### `OP_NOP67` Not documented. ### `OP_NOP68` Not documented. ### `OP_NOP69` Not documented. ### `OP_NOP7` Not documented. ### `OP_NOP70` Not documented. ### `OP_NOP71` Not documented. ### `OP_NOP72` Not documented. ### `OP_NOP73` Not documented. ### `OP_NOP74` Not documented. ### `OP_NOP75` Not documented. ### `OP_NOP76` Not documented. ### `OP_NOP77` Not documented. ### `OP_NOP8` Not documented. ### `OP_NOP9` Not documented. ### `OP_NOT` Not documented. ### `OP_NOTIF` Not documented. ### `OP_NUM2BIN` Not documented. ### `OP_NUMEQUAL` Not documented. ### `OP_NUMEQUALVERIFY` Not documented. ### `OP_NUMNOTEQUAL` Not documented. ### `OP_OR` Not documented. ### `OP_OVER` Not documented. ### `OP_PICK` Not documented. ### `OP_PUBKEY` Not documented. ### `OP_PUBKEYHASH` Pseudo-words (not used in scripts) ### `OP_PUSHDATA1` Not documented. ### `OP_PUSHDATA2` Not documented. ### `OP_PUSHDATA4` Not documented. ### `OP_RESERVED` Not documented. ### `OP_RESERVED1` Not documented. ### `OP_RESERVED2` Not documented. ### `OP_RETURN` Not documented. ### `OP_RIGHT` Not documented. ### `OP_RIPEMD160` Crypto ### `OP_ROLL` Not documented. ### `OP_ROT` Not documented. ### `OP_RSHIFT` Not documented. ### `OP_RSHIFTNUM` Not documented. ### `OP_SHA1` Not documented. ### `OP_SHA256` Not documented. ### `OP_SIZE` Not documented. ### `OP_SPLIT` Not documented. ### `OP_SUB` Not documented. ### `OP_SUBSTR` Chronicle slots (0xb3–0xb7): string-splice and numeric-shift opcodes re-enabled in BSV Chronicle. Fully implemented in the interpreter. ### `OP_SWAP` Not documented. ### `OP_TOALTSTACK` Stack ### `OP_TRUE` Not documented. ### `OP_TUCK` Not documented. ### `OP_VER` Not documented. ### `OP_VERIF` Not documented. ### `OP_VERIFY` Not documented. ### `OP_VERNOTIF` Not documented. ### `OP_WITHIN` Not documented. ### `OP_XOR` Not documented. ## Public Class Methods ### `name_for(opcode)` Look up the canonical name for an opcode byte. - **@param** `opcode` [Integer] the opcode byte value - **@return** [String, nil] the opcode name (e.g. +"OP_DUP"+), or +nil+ if unknown