Sui is preparing to put a familiar question to Bitcoin holders: what if your BTC could do more than sit idle? This time, the pitch arrives backed by more than $500 million in committed capital. The Sui Foundation says the money is lined up for Hashi, its native Bitcoin collateral infrastructure, ahead of a phased mainnet rollout.

The announcement was made on October 8, 2026, at Sui Basecamp. The commitments come from a coalition of more than 20 partner organizations, with Anchorage Digital among the headline names.

What Hashi Actually Does

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. A guardian rate-limiter is layered on top, capping how fast funds can flow so that a bad actor cannot drain everything in a single afternoon.

According to the project, the goal is to avoid the two things Bitcoin purists tend to dislike most: traditional wrapping methods, in which a custodian holds the underlying coins and issues a token against them, and centralized management of those coins.

The $500 Million, and Who Is Bringing It

The more than $500 million is committed capital intended as initial liquidity for launch, not deposits already sitting in the system — a distinction between backing and money already at work in the protocol.

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.

How We Got Here

Hashi's testnet went live on July 22, 2026. The jump from testnet to a mainnet announcement took less than three months, and the phased rollout is expected to begin later in October 2026.

What This Means for Bitcoin, Sui, and Institutions

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, precisely when users most want access to their coins.

The things to track over the coming weeks are clear enough: how much of the more than $500 million in commitments converts into live liquidity, how quickly hBTC gets adopted across Aftermath, Concrete, and Fluid, how many Anchorage clients actually route Bitcoin through Atlas or Porto, and how the guardian rate-limiter holds up once real withdrawals begin.

Source: CryptoBriefing — Sui's Hashi Bitcoin collateral network lines up more than $500M ahead of mainnet