Sui has announced that Hashi, its Bitcoin-focused financial infrastructure, is scheduled to begin a phased mainnet rollout later in October 2026, backed by more than $500 million in committed capital from a coalition of more than 20 participating firms.
The rollout will take place progressively as participating partners complete their integrations. Sui made the announcement on October 8 at Sui Basecamp 2026 in Singapore, describing Hashi as infrastructure for using native Bitcoin as collateral across financial applications built on Sui.
Anchorage Digital is joining the launch as a day-one partner, adding institutional custody and settlement infrastructure to the Hashi ecosystem while also offering a self-custody route through its Porto wallet.
Under the arrangement, Anchorage’s Atlas platform will provide an institutional route for custody and settlement, while Porto is intended for institutions that want to hold assets in a self-custodied wallet and interact directly with onchain applications. Anchorage also plans to provide stablecoin liquidity to Hashi.
Hashi is designed to let users keep the underlying Bitcoin on the Bitcoin network while representing its value on Sui through hBTC. After Bitcoin is deposited into a Hashi-controlled address, the system confirms the deposit and mints an equivalent amount of hBTC on Sui. The hBTC can then be used in lending, borrowing, credit markets and other financial applications. When users exit, the hBTC is burned and the underlying Bitcoin is released.
The arrangement does not mean that users retain unilateral control of deposited Bitcoin. Hashi’s technical architecture uses a multiparty computation committee together with a Guardian layer to control Bitcoin spending. Normal Bitcoin outflows require authorization from both components, while additional controls are designed to limit or slow large withdrawals.
Sui says the more than $500 million figure represents capital committed to the Hashi ecosystem rather than reported live value already deposited into the system. The committed capital is intended to provide liquidity for applications including lending, borrowing, credit markets and vault strategies. Sui has identified Aftermath, Concrete and Fluid among the vault providers involved in the launch.
The project has moved through several stages before the planned mainnet rollout. Sui introduced Hashi in March 2026 and launched a global testnet in July, where the project added its Guardian Layer and expanded its network of institutional, custody, liquidity and DeFi participants.
Hashi’s design also differs from conventional wrapped-Bitcoin systems by keeping the underlying BTC on Bitcoin rather than moving it to a separate blockchain. Sui’s documentation describes the model as a Bitcoin collateralization system in which Bitcoin ownership and transaction control are secured through threshold cryptography and a committee drawn from participating Sui validators.
Security reviews have been conducted as the system progressed toward mainnet. Sui says Hashi’s smart contracts have undergone formal verification by Certora, while CommonPrefix reviewed the cryptographic security of its MPC protocol. Earlier development materials also identified Asymptotic, Certora and OtterSec in security and verification work.
Hashi’s technical documentation states that the protocol itself does not charge a fee for deposits or withdrawals beyond the Bitcoin miner fee associated with a withdrawal. It also warns that there is no official “$HASHI” token or Hashi airdrop, with hBTC being the only coin created by the system.
With Anchorage now joining the launch coalition, Hashi’s planned October rollout will include both an institutional custody and settlement path through Atlas and an institutional self-custody option through Porto as Sui begins moving the system from testing toward mainnet.
Discover more from Aree Blog
Subscribe now to keep reading and get access to the full archive.
