proBTC

proBTC is a decentralised wrapped bitcoin on BRC-2.0, pegged one to one to native BTC and playing the role WETH plays on Ethereum: BTC does not meet the BRC-20 or BRC-2.0 token standards and cannot enter AMMs, lending or stablecoin protocols without first becoming a programmable asset. To wrap, a user sends BTC to a threshold signature address and a committee of nodes signs out an equal amount of proBTC using distributed key shards; to unwrap, proBTC is burned and the committee co-signs the release of native BTC. Keys are split through distributed key generation and multi-party computation so no single node holds a full private key, and nodes post collateral subject to slashing.

The asset was adopted by the first AMM on BRC-2.0 as its base pair, providing BTC-denominated liquidity for BRC-20 tokens; the protocol charges a one-time fee on wrapping and unwrapping, with no repeat wrapping for use inside the ecosystem. It is the liquidity base of BRC-2.0, connecting Bitcoin mainnet assets to the meta-protocol's contract layer, and differs from custodial wrappers by distributing trust across a committee rather than a single issuer.