Represents an operation that means nothing inside the Script language
Reserved words Any opcode not assigned is also reserved.
Transaction is invalid unless occuring in an unexecuted OP_IF branch
Transaction is invalid unless occuring in an unexecuted OP_IF branch
Transaction is invalid unless occuring in an unexecuted OP_IF branch
Transaction is invalid unless occuring in an unexecuted OP_IF branch
Transaction is invalid even when occuring in an unexecuted OP_IF branch
Transaction is invalid even when occuring in an unexecuted OP_IF branch
Reserved words Any opcode not assigned is also reserved. Using an unassigned opcode makes the transaction invalid. https://en.bitcoin.it/wiki/Script#Reserved_words