Unveiling Bitcoin Improvement Proposal 420: The Return of OP_CAT

A Dive into the Reintroduction of a Classic Opcode The Bitcoin Improvement Proposal (BIP) 420 proposes reintroducing OP_CAT, a tapscript opcode that allows for the concatenation of two stack values. This capability, deactivated in earlier Bitcoin versions due to its potential for excessive memory usage, is poised to enhance Bitcoin’s […]