With out OP_CAT, Bruce Liu says Bitcoin is as “helpful as a jumbo jet with out wings” able to far more than it’s allowed to do, however caught on the bottom whereas Ethereum and Solana soar.
Liu, the founding father of OPCAT_Labs, says a single opcode, OP_CAT, might rework Bitcoin from static digital gold into programmable cash that rivals different Layer-1 chains.
OP_CAT is a long-disabled opcode in Bitcoin’s code that, if re-enabled, would permit builders to concatenate information in scripts and unlock a spread of recent prospects, from vaults and covenants to decentralized exchanges and zero-knowledge proofs.
The Bitcoin blockchain, if OP_CAT was re-enabled, can be as programmable as Ethereum or Solana, mentioned Liu.
“OP_CAT will not be new code. It was by no means deleted, simply commented out and disabled. We aren’t including my opcode or someone else’s. It’s Satoshi’s,” Liu advised CoinDesk throughout an interview on the sidelines of BTC Asia in Hong Kong.
However the push for OP_CAT doesn’t come with out friction.
Satoshi disabled it in 2010 over issues it might allow denial-of-service assaults. Opponents argue that any new opcode introduces “unknown unknowns,” threatening Bitcoin’s hard-won stability. Others take a philosophical stance: Bitcoin ought to stay digital gold, fairly than chasing Ethereum’s programmability.
Liu pushes again by interesting to Satoshi Nakamoto’s design.
“If Bitcoin was just for funds, why did Satoshi embrace Script in any respect?” he requested. “OP_CAT isn’t my invention, it’s Satoshi’s code. It was by no means deleted, solely disabled.”
Liu says OP_CAT would convey Script to life – the fundamental programming language constructed into the Bitcoin blockchain – permitting Bitcoin to do extra than simply funds and enabling options like vaults and even fundamental DeFi.
OP_CAT, he mentioned, would unlock extra of that potential, letting builders construct issues like vaults, covenants, and even easy DeFi apps on Bitcoin.
To strengthen the purpose, he factors again to Nakamoto’s personal rationalization of why Script existed within the first place.
In a 2010 Bitcointalk publish, Nakamoto wrote that Bitcoin’s design was successfully “set in stone” from its first launch, so he wished it to accommodate each kind of transaction he might think about.
Arduous-coding every one would have created countless particular circumstances, Satoshi defined, so as an alternative the Bitcoin creator launched Script as a basic resolution that permit customers outline their very own situations whereas nodes solely wanted to verify if these situations have been met.
Already, the corporate launched a fork of Bitcoin in a digital machine with OP_CAT enabled to exhibit its potential, full with SDKs, APIs and a JavaScript-like programming language designed to make constructing on Bitcoin accessible to Web2 builders.
The OP_CAT Foyer
The opposite half of Liu’s plan is political. Alongside Mate Tokay, an early Bitcoin entrepreneur, who co-founded Bitcoin.com with Roger Ver, OPCAT_Labs is spearheading what they describe as an “Alliance” of OP_CAT supporters.
The aim is to coordinate in any other case scattered efforts from teams like Taproot Wizards, StarkWare, and impartial builders.
“Beforehand, OP_CAT advocacy was leaderless,” Liu mentioned. “Ninety % of individuals we converse with are in favor, however the loudest voices are those in opposition to. We wish to arrange help into one thing seen, semi-official, and coordinated.”
Tokay frames it as an training marketing campaign for influential stakeholders, fund managers, establishments, and even lawmakers, who he says are too centered on BTC treasuries to note the programmability debate.
“In the event that they knew what OP_CAT unlocks, they’d be much more enthusiastic about Bitcoin’s future,” he mentioned.
By subsequent 12 months’s Bitcoin Asia convention, Liu hopes to point out working DeFi apps on Bitcoin and progress towards an organized lobbying entrance.
He frames it as unlocking potential that’s been there all alongside. “We’re not altering Bitcoin,” he mentioned. “We’re unfolding its wings.”