Key Takeaways
Sui’s Hashi testnet processed 1.1 million bitcoin deposits and 165,000 withdrawals as of final week.Over 25 establishments, together with Bitgo and Cumberland, are stress-testing Hashi’s BTC collateral system.Hashi’s Guardian Layer should clear safety opinions earlier than any 2026 mainnet transition begins.
Deposit Quantity Climbs in Testnet’s First Weeks
Onchain analysts have reported that exercise on Sui’s Hashi testnet has been brisk for the reason that testnet went dwell on July 22, with cumulative deposits surpassing 1.1 million and withdrawals topping 165,000 in simply three weeks.
The tempo appears to be indicative of early retail and institutional urge for food for bringing native bitcoin onto Sui with out wrapping the asset into an artificial token, a mannequin that has drawn scrutiny on different chains after repeated bridge exploits drained tons of of tens of millions of {dollars} from custodial designs lately.
Hashi was first launched by the Sui Basis in March 2026 as a decentralized primitive constructed to let bitcoin (BTC) perform as collateral in onchain lending and credit score markets. The venture moved by a personal devnet part earlier than opening the present public testnet, giving builders entry to software program growth kits (SDKs) and integration guides forward of an eventual mainnet rollout.
Numbers-wise, it bears mentioning that bitcoin-linked decentralized finance (DeFi) has had a tough 2026 with layer-2 BTCFi TVL falling roughly 74% from its 2025 highs to about 91,000 BTC by mid-year. Hashi’s pitch of conserving BTC on its native chain relatively than wrapping it’s a direct response to that skepticism, and the early deposit and withdrawal counts give Sui a knowledge level to argue the method is discovering an viewers regardless of the broader pullback.
How Hashi Retains Bitcoin Native
Not like standard wrapped-asset bridges, Hashi doesn’t transfer bitcoin off the Bitcoin community. As an alternative, customers deposit native BTC, Sui validators affirm the transaction, and the protocol mints hBTC, a consultant token that can be utilized as programmable collateral for institutional lending and stablecoin borrowing whereas the underlying bitcoin stays put by itself chain.
Safety rests on a layered design the place deposits are secured by a 2-of-2 multisig requiring signatures from the protocol’s multi-party computation (MPC) validators, a cryptographic setup through which no single get together ever holds a whole non-public key.
Lastly, withdrawals go by a Guardian Layer, a configurable risk-management system that features as a circuit breaker, reviewing giant withdrawal requests in opposition to preset thresholds earlier than they clear. In sum, the design construction makes an attempt to keep away from the one factors of failure that left older cross-chain bridges weak to exploits.
Institutional Backers Line Up Behind the Protocol
Greater than 25 establishments are at present stress-testing the system, together with custody and buying and selling heavyweights Bitgo and Cumberland alongside Swissborg, Fluid and Ledger. Their participation spans buying and selling desks, custody infrastructure and wealth platforms, signaling demand for compliant, non-custodial methods to place idle bitcoin to work in DeFi with out taking up the counterparty threat that has dogged earlier wrapped-bitcoin bridges.
The protocol’s income mannequin leans on interest-rate spreads between what depositors earn and what debtors pay for bitcoin-backed loans, relatively than counting on inflationary token emissions to bootstrap exercise.
That construction mirrors how conventional lending desks worth credit score, an method Sui’s backers argue will maintain up higher as soon as testnet incentives disappear and actual capital is on the road.
If Hashi can ultimately seize even a small share of the $1.4 trillion bitcoin marketplace for onchain lending, it could characterize one of many extra important crossovers between Bitcoin’s stability sheet and a non-Bitcoin DeFi ecosystem thus far.
