Sui’s Hashi Bitcoin Collateral Network Draws $500M Before Mainnet

The Sui Foundation said its native Bitcoin collateral infrastructure, Hashi, is heading into a phased mainnet rollout in October 2026 backed by more than $500 million in committed capital, according to Cryptobriefing. The commitments come from a coalition of more than 20 partner organizations, with Anchorage Digital among the headline names.

The announcement landed on October 8, 2026, at the Sui Basecamp event. Cryptobriefing noted that Hashi’s testnet went live on July 22, 2026, meaning the move from testnet to a mainnet announcement took less than three months.

Key facts

• More than $500 million in committed capital is intended as initial liquidity for launch, not as deposits already sitting in the system, per Cryptobriefing.
• Anchorage Digital, a day-one launch partner, will open Hashi to institutional clients through two routes: its Atlas tri-party collateral settlement system, which operates within qualified custody, and its Porto self-custody wallet, Finbold reported.
• Capital is expected to flow into early applications through vault providers including Aftermath, Concrete and Fluid, and Finbold reported others are involved as well.
• Hashi mints hBTC, a representation of Bitcoin on Sui, with holders able to move between hBTC and native BTC through deposit and withdrawal mechanisms.
• Security rests on threshold cryptography, also known as multi-party computation, with each Sui address given a 2-of-2 multisig arrangement and a guardian rate-limiter capping how fast funds can flow.

How Hashi is meant to work

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 project’s stated goal is to sidestep two things Bitcoin purists tend to dislike: traditional wrapping methods and centralized management of the underlying coins.

The design gives each Sui address a 2-of-2 multisig arrangement, so two separate keys must sign off before anything moves. A guardian rate-limiter sits on top, capping how fast funds can flow so a single bad actor cannot drain everything at once. Cryptobriefing flagged the rate-limiter as a tradeoff to watch: it slows attackers, but it can also slow legitimate withdrawals during periods of market stress, when users most want access to their coins.

Anchorage Digital’s role is designed to give regulated players a familiar on-ramp rather than asking them to trust an unfamiliar bridge. “Public companies and institutions hold enormous amounts of Bitcoin, but their ability to use that capital has been constrained by the technology available to them and the limitations of the DeFi space,” said Nathan McCauley, CEO and Co-Founder of Anchorage Digital, according to Finbold. Adeniyi Abiodun, Co-Founder and Chief Product Officer of Mysten Labs, the original contributor to Sui, said Bitcoin has already become a global reserve asset and the financial infrastructure around it is catching up.

Where the two reports differ

Cryptobriefing listed Aftermath, Concrete and Fluid as the vault providers expected to take early flows, while Finbold named the same three plus “others” and listed BitGo, Bullish, Cumberland, FalconX and Ledger among the more than 20 partners. Cryptobriefing framed the rollout as beginning “later in October 2026” and described the timing of the jump from testnet as taking less than three months. Finbold described mainnet as going live “this month” and stated that the rehearsal ends at the end of the month.

Why it matters

Publicly traded companies holding Bitcoin on their balance sheets have historically had few ways to use native BTC in programmable financial markets without selling it first. Hashi’s pitch is that BTC can become collateral for liquidity and financing instead, potentially changing how those treasury holdings are managed. Finbold reported more than $1 trillion in Bitcoin remains largely idle for that reason. Anchorage’s involvement through qualified custody gives regulated institutions a route that matches their compliance and operational requirements, rather than a bridge they have to take on trust.

What to watch

The near-term question is how much of the more than $500 million in commitments converts into live liquidity. Also worth tracking is how quickly hBTC is adopted across Aftermath, Concrete and Fluid, and how many Anchorage clients route Bitcoin through Atlas or Porto once the phased rollout begins.

Disclaimer: This article is for information only and is not investment, financial or trading advice. Cryptocurrency prices are highly volatile. Always do your own research.

Sources: Crypto Briefing, Finbold