Share this article

Satoshi-Era Bitcoin Function 'OP_CAT' Dusted Off as Development Fervor Grows

Developers Ethan Heilman and Armin Sabouri view OP_CAT as a simple opcode that offers some of the general purpose functionality currently missing in Bitcoin

Armin Sabouri (left), one of the co-authors of the OP_CAT proposal; with Dan Gould, a Bitcoin developer; and co-author Ethan Heilman, in October at Chaincode Labs' Bitcoin Research Day, in New York. (Neha Narula)
Armin Sabouri (left), one of the co-authors of the OP_CAT proposal; with Dan Gould, a Bitcoin developer; and co-author Ethan Heilman, in October at Chaincode Labs' Bitcoin Research Day, in New York. (Neha Narula)