Sui Foundation said on October 8 that Hashi, a system for using native bitcoin as collateral in applications on Sui, will begin a phased mainnet rollout later in October. The announcement adds a launch timetable to a project that reached public testnet in July, but it does not establish that mainnet deposits, loans or withdrawals are available yet.
Sui also reported more than $500 million in capital commitments from a coalition of more than 20 partners. That figure is a forward-looking, issuer-supplied aggregate: the announcement does not break it down by firm, specify how much is bitcoin versus stablecoins, or state how much will be deposited on the first day. It should not be read as current total value locked, borrowing demand or executed transaction volume.
How Hashi is designed to move bitcoin into Sui applications
Hashi’s published design separates the bitcoin asset from the financial logic that uses it. A user sends BTC on the Bitcoin network to a Hashi-managed deposit address. After Sui validators observe the required confirmations, the protocol mints a corresponding Coin<BTC> representation on Sui. That representation can then enter lending, vault or other smart-contract systems. On withdrawal, the Sui-side representation is burned and native BTC is released on Bitcoin.
The technical documentation describes deposit addresses as 2-of-2 multisignature arrangements. One authorization comes from the threshold-signing process run by participating Sui validators; a separate guardian approval provides another check before bitcoin can leave. This structure is not the same as leaving coins under a user’s sole key. It substitutes a disclosed set of validator, guardian, smart-contract and operational dependencies for a conventional centralized lender’s balance sheet.
The launch announcement says hBTC is the asset minted against deposited bitcoin. The project’s design documentation instead uses Coin<BTC> as its generic onchain ownership representation. Until production contracts and interfaces are live, readers should treat naming, integrations and operating parameters as implementation details that may still change.
Anchorage expands the planned access routes
Sui identified Anchorage Digital as a new launch partner. According to the announcement, Anchorage plans to connect eligible institutional clients through Atlas, its tri-party settlement and collateral system, and through Porto, its institutional self-custody wallet. Anchorage also plans to supply stablecoin liquidity.
Those are intended access routes, not evidence of completed client deposits or live credit. Sui named Aftermath, Concrete and Fluid among prospective vault providers, while its broader coalition includes custody, trading and infrastructure firms. The announcement did not disclose individual allocations, interest rates, loan-to-value ratios, liquidation thresholds or the legal terms for any specific product.
That distinction matters because Hashi is infrastructure rather than one uniform investment product. Each venue can set its own collateral rules, oracle design, fees and liquidation process. A protocol-level custody mechanism cannot by itself establish the risk or return of every application built above it.
The next test is production evidence
Hashi’s July 22 testnet launch provided developers with code, documentation and a controlled environment. The October 8 announcement moves the project toward production, while the public repository supplies direct evidence that the implementation is actively developed. Neither source proves how the system will behave with substantial mainnet value.
The first meaningful checks after rollout will be the production contract addresses, verified bitcoin reserves against minted representations, actual deposits and withdrawals, and incident reporting. Usage and liquidity should be measured only after a defined observation window. For now, the verified development is narrow: Sui has scheduled a phased October rollout and reported partner commitments, while live capital, utilization and performance remain unverified.
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