OP_CHECKTEMPLATEVERIFY

OP_CHECKTEMPLATEVERIFY (CTV) is a proposed new opcode that takes a commitment and requires any transaction executing the opcode to match the commitment in the following fields: its version, locktime, signature scripts, number of inputs, sequences, number of outputs, outputs, and the location of the input being spent within the spending transaction. This allows an output to specify how its funds may be spent—a design known in Bitcoin as a covenant. Read More