Opcodes · push · enabled

OP_1NEGATE (0x4f)

Pushes the number -1.

Verified
Stack in → out
∅ → -1
Since
Original Bitcoin script
Cost
Base instruction cost 100 plus the byte length of the pushed result (2025 VM limits).
Bitcoin status
Same in Bitcoin (BTC)

Example

OP_1NEGATE OP_ABS OP_1 OP_EQUAL

Step through it opcode by opcode in Bitauth IDE, the in-browser BCH VM debugger.

Sources

  1. Libauth BCH_2023_05 opcodes (bch-2023-opcodes.ts)