Opcodes · splice · enabled
OP_NUM2BIN (0x80)
Converts number n to a byte string of exactly `size` bytes, padding with zeros and keeping the sign bit. It uses the byte of the disabled OP_LEFT.
Verified
- Stack in → out
- n size → bin
- Cost
- Base instruction cost 100 plus result length (2025 VM limits).
- Bitcoin status
- Not in Bitcoin (BTC)0x80 is the disabled OP_LEFT in BTC; an OP_SUCCESS code in Tapscript.
Example
OP_2 OP_4 OP_NUM2BIN <0x02000000> OP_EQUALStep through it opcode by opcode in Bitauth IDE, the in-browser BCH VM debugger.