Hashi, a Bitcoin collateralization protocol built on Sui, will launch its mainnet later this month with more than $500 million in committed capital from a coalition of over 20 institutional partners including Anchorage Digital, BitGo, Cumberland, Bullish, FalconX, Ledger, and SwissBorg. The annou...
"Think of Hashi as the unlock for developers to design solutions opening access to trillions in BTC liquidity." — Adeniyi Abiodun, Co-Founder and CPO, Mysten Labs
Hashi, a Bitcoin collateralization protocol built on Sui, will launch its mainnet later this month with more than $500 million in committed capital from a coalition of over 20 institutional partners including Anchorage Digital, BitGo, Cumberland, Bullish, FalconX, Ledger, and SwissBorg. The announcement, made at Sui Basecamp on October 7, 2026, positions Hashi as the largest Bitcoin-to-DeFi deployment by committed launch capital.
The protocol targets approximately $1.5–1.8 trillion in dormant Bitcoin — coins sitting in wallets generating zero yield. Only 0.79% of Bitcoin's total supply is currently locked in DeFi protocols, according to BTCFi market data. Hashi's design differs from existing wrapped-BTC models in one structural aspect: it does not move bitcoin off the Bitcoin network. Instead, users deposit native BTC, Sui validators confirm the deposit, and the protocol mints hBTC — a representative token usable as programmable collateral on Sui — while the underlying bitcoin remains on its own chain.
Whether the market wants this product at scale remains an open question. BTCFi total value locked peaked near $9.1 billion in October 2025 and subsequently lost roughly three-quarters of its value, according to data cited by Threshold Network. The dominant 2024–2025 model asked Bitcoin holders to bridge into unfamiliar EVM environments, take on bridge risk and smart contract risk, for single-digit returns they could obtain elsewhere with less exposure. Hashi's thesis is that the architecture was the problem, not the demand.
Bitcoin's market capitalization fluctuates between $1.4 and $1.9 trillion. The vast majority of that supply sits idle. According to KuCoin Research, roughly $1.8 trillion in Bitcoin does nothing but appreciate (or depreciate) in wallets. The capital is passive by design — Bitcoin's base layer has no native lending, borrowing, or yield infrastructure.
Bitcoin bridge assets command $23.26 billion in DeFi total value locked as of September 30, 2026, representing 24.6% of the $94.66 billion DeFi ecosystem, according to market intelligence data. But this figure is dominated by three custodial wrappers: WBTC ($15.21 billion, 65.4% share, approximately 125,000 BTC through BitGo custody), Binance Bitcoin ($8.05 billion), and Coinbase's cbBTC ($6.26 billion, approximately 73,000 BTC).
Total DeFi TVL across all chains sits at $130–170 billion in 2026. Bitcoin's 0.79% participation rate suggests either structural barriers to adoption or a fundamental lack of demand. Hashi is betting on the former.
Hashi separates where the Bitcoin exists from where the financial logic runs. The protocol operates through four layers:
Deposit and Mint. A user deposits native BTC into a Hashi-controlled address on the Bitcoin blockchain. Sui validators confirm the Bitcoin transaction. The protocol mints hBTC, a representative token on Sui, at a 1:1 ratio against the deposited Bitcoin.
Collateral and Lending. hBTC can be deposited as collateral into Sui-native DeFi protocols — AlphaLend, Bluefin, Current, Scallop, and Suilend are confirmed at launch — to borrow stablecoins, enter structured products, or access yield strategies. The underlying bitcoin does not move.
Multi-Party Computation (MPC) Security. Deposits are secured by a 2-of-2 multisig requiring signatures from the protocol's MPC validators. No single party holds a complete private key at any point. This is a design choice to remove single-custodian risk — the vulnerability that defines WBTC's dependence on BitGo.
Guardian Layer. A secondary checkpoint monitors large withdrawals and abnormal threshold activity as a safeguard against systemic risk. This layer acts as a circuit breaker, not a governance override.
The protocol explicitly avoids the "wrapped token" label. Hashi's documentation describes hBTC as a "Sui-side asset minted against Bitcoin deposited into Hashi" — a semantic distinction, but one that signals an intent to differentiate from the WBTC model that has absorbed $15 billion while also accumulating counterparty concerns following the 2024 BiT Global custody transition.
The $500 million in committed capital comes from a coalition spanning custody, liquidity, DeFi, and institutional infrastructure:
| Category | Partners | |----------|----------| | Custody & Security | Anchorage Digital, BitGo, Ledger | | Liquidity & Trading | Bullish, Cumberland, FalconX, Erebor Bank | | DeFi Protocols (Sui) | AlphaLend, Bluefin, Current, Scallop, Suilend | | Yield Infrastructure | Concrete (Blueprint Finance), Aftermath, Fluid | | RWA & Other | Inveniam Capital, SwissBorg, CF Benchmarks |
Anchorage Digital, the only OCC-chartered crypto bank in the U.S., will provide both qualified custody and stablecoin liquidity. CF Benchmarks, a UK FCA-regulated benchmark administrator, will supply pricing data through oracles for collateral valuation — a detail that matters for institutional lenders requiring auditable price feeds.
The capital is deployed into vaults operated by coalition members. According to the Sui Foundation, "lending, borrowing, credit, vaults, structured products, and other applications can begin with meaningful capital already behind them."
The commitment figure requires context. "$500 million committed" is not $500 million deposited. It represents pledged capital from coalition members who intend to deploy into Hashi-powered applications. The actual on-chain TVL at launch will depend on market conditions, demand for BTC-backed borrowing, and the stablecoin yields available through Sui's DeFi ecosystem.
Hashi's global testnet went live on July 22, 2026. In its first three weeks, the protocol processed 1.1 million Bitcoin deposits and 165,000 withdrawals on the Bitcoin Signet testnet. Hashi test activity accounted for more than 50% of all Bitcoin Signet transactions during that period.
Over 25 institutions participated in testnet stress-testing, including BitGo and Cumberland. The protocol introduced a Guardian Layer during the testnet phase as a secondary safety checkpoint for abnormal activity patterns.
Testnet volume on a free, zero-risk network does not predict mainnet behavior. The 1.1 million deposit figure demonstrates that the infrastructure can handle throughput, not that users will deposit real BTC at scale.
Hashi launches into a wrapped Bitcoin market that is large, concentrated, and carrying unresolved trust concerns.
WBTC holds $15.21 billion across approximately 125,000 BTC. BitGo remains primary custodian, but the 2024 introduction of BiT Global as a co-custodian under a "multi-jurisdictional" model drew scrutiny from MakerDAO, which reduced its WBTC collateral cap by $500 million. The multi-custodian arrangement adds legal complexity without reducing the fundamental counterparty dependency.
cbBTC (Coinbase) holds approximately 73,000 BTC ($6.26 billion). Coinbase acts as sole custodian and issuer, with the same single-entity risk that WBTC's model attracts criticism for — but with the regulatory cover of Coinbase's U.S. exchange licenses.
tBTC (Threshold Network) uses a decentralized custodian network but holds approximately $300 million — a fraction of the market despite being operational since 2023.
Bridge exploits remain the sector's open wound. The Ronin Bridge hack ($624 million, March 2022), Wormhole exploit ($326 million, February 2022), and Nomad bridge hack ($190 million, August 2022) collectively extracted over $1 billion. These were not Bitcoin-specific bridges, but they established the risk template that Bitcoin holders evaluate when considering any cross-chain exposure.
Hashi's MPC-based security model offers improvements over single-custodian wrappers but introduces its own trust assumptions:
Improvement over WBTC: No single entity controls the keys to deposited Bitcoin. The 2-of-2 multisig with MPC key splitting means a compromise of one party cannot drain funds. This is structurally superior to BitGo's custodial model, where one entity holds all keys.
Remaining trust assumption: Users must trust the MPC validator set. The identities, number, and rotation mechanism of these validators determine whether the system is meaningfully decentralized or functionally equivalent to a small multisig. Hashi's documentation describes MPC validators but does not specify the validator set size or the threshold required for key reconstruction beyond "2-of-2."
Guardian Layer trade-off: The secondary monitoring system can flag and potentially delay large withdrawals. This adds a safety net against exploits but also introduces a control point — exactly the kind of intervention mechanism that creates regulatory surface area and potential censorship vectors.
Compared to Babylon Protocol — which uses a pure staking model where Bitcoin never leaves the Bitcoin chain and no representative token is minted — Hashi's minting of hBTC adds bridge risk. Babylon's $4.29 billion TVL (80% of BTCFi) was achieved without any bridging mechanism, though it offers a narrower set of financial applications (staking rewards only, no lending or structured products).
The $500 million commitment figure positions Hashi as a well-capitalized launch. But the BTCFi sector's history suggests capital availability is not the binding constraint.
BTCFi TVL peaked at $9.1 billion in October 2025 and declined to approximately $2.3 billion by early 2026 — a 75% drawdown. The contraction occurred despite multiple well-funded protocols operating simultaneously. Threshold Network's post-mortem analysis attributed the decline to "unfamiliar EVM environments, bridge risk, and smart contract risk" delivering "single-digit returns" that did not compensate for the additional exposure.
Hashi's answer to this history is architectural: by building on Sui rather than Ethereum, it avoids the EVM-specific bridge risks. But it introduces Sui-specific risks — a younger chain with lower total DeFi TVL ($2.1 billion per DeFiLlama as of September 2026) and a smaller liquidity base than Ethereum.
The economic question reduces to yield. If BTC-backed borrowing on Sui generates returns materially above what holders can earn in traditional BTC custody or through Babylon staking (currently 3–5% annualized), the demand case strengthens. If yields converge with existing options, the added complexity of MPC bridges and a secondary chain becomes harder to justify.
The foundational report by webthreepedia on economic value distribution in blockchain ecosystems found that 85–90% of the sector's value flows remain subsidy-driven. Hashi's launch capital is, in effect, a subsidy — institutional liquidity deployed to bootstrap demand. Whether user-generated economic activity replaces that subsidy at scale is the test that wrapped Bitcoin predecessors have yet to pass.
Hashi represents the most capitalized attempt to solve the Bitcoin-in-DeFi problem through architecture rather than through yield subsidies alone. Its MPC security model removes single-custodian risk. Its Sui-native design avoids EVM bridge dependencies. Its 20+ institutional coalition provides day-one liquidity.
None of these advantages address the fundamental question: do Bitcoin holders want DeFi exposure at all? The 0.79% participation rate, the 75% BTCFi TVL drawdown, and the persistent dominance of simple custodial wrappers like WBTC suggest that most Bitcoin holders prefer simplicity and self-custody over yield.
The $500 million in committed capital buys time. It does not buy demand. If Hashi's yields fail to compensate for the complexity and risk of a new bridge, the protocol will join tBTC, renBTC, and the other well-intentioned but underused alternatives in the long tail of wrapped Bitcoin products. If they do, it may finally demonstrate that Bitcoin can sustain a DeFi economy on a chain other than Ethereum — a proposition that $1.8 trillion in dormant capital has so far declined to test.