Sui's Hashi Bitcoin collateral network lines up more than $500M ahead of mainnet
Sui is about to ask Bitcoin holders a question they have heard many times before: what if your BTC did something besides sit there?This time the pitch comes with more than $500 million in committed capital. The Sui Foundation says that money is lined up for Hashi, its native Bitcoin collateral infrastructure, ahead of a phased mainnet rollout.The announcement came on October 8, 2026, at Sui Basecamp. The commitments come from a coalition of more than 20 partner organizations, and Anchorage Digital is one of the headline names.Hashi keeps native BTC on the Bitcoin network itself. Smart contracts on Sui coordinate how that Bitcoin gets used as collateral across lending, borrowing, credit, vaults and structured products.The system mints hBTC, a representation of Bitcoin on Sui. Holders can move between hBTC and native BTC through deposit and withdrawal mechanisms.Security rests on threshold cryptography, also known as multi-party computation (MPC). Each Sui address gets a 2-of-2 multisig arrangement, meaning two separate keys must sign off before anything moves.There is also a guardian rate-limiter layered on top. Its job is to cap how fast funds can flow, so a bad actor cannot drain everything in a single afternoon.The goal, according to the project, is to avoid the two things Bitcoin purists tend to dislike most. Those are traditional wrapping methods and centralized management of the underlying coins.The more than $500 million is committed capital intended as initial liquidity for launch, not deposits already sitting in the system.Anchorage Digital is the most notable institutional partner. It will give clients access to Hashi through two routes: its Atlas tri-party collateral settlement system, which operates within qualified custody, and its Porto self-custody wallet.Anchorage is also bringing stablecoin liquidity to the table.Capital is expected to flow into early applications through vault providers including Aftermath, Concrete and Fluid.Hashi's testnet went live on July 22, 2026. The jump from testnet to a mainnet announcement took less than three months.The phased rollout is expected to begin later in October 2026.The project says it is targeting institutional-grade compliance, and Anchorage's involvement through qualified custody gives regulated players a familiar on-ramp rather than asking them to trust an unfamiliar bridge.The rate-limiter is a tradeoff worth watching. It slows attackers down, but it can also slow legitimate withdrawals during periods of market stress, when users most want access to their coins.The things to track over the coming weeks are clear enough. Watch how much of the more than $500 million in commitments converts into live liquidity, how quickly hBTC gets adopted across Aftermath, Concrete and Fluid, and how many Anchorage clients actually route Bitcoin through Atlas or Porto.