Hashi combines multi-party computation (MPC) custody with on-chain smart contracts to enable BTC-backed lending and stablecoin borrowing, and it is planning an initial mainnet launch later in 2026 after a devnet phase, according to reporting by Cointelegraph.
How the move unfolded
The project has been developed with primary contribution from Mysten Labs on the Sui blockchain and progressed through a devnet phase as it moves toward mainnet next year. This sequencing — devnet then mainnet — signals a deliberate rollout from development to production rather than an immediate market push, and it gives counterparties time to evaluate integration with custody and lending stacks. Cointelegraph reported the timeline and development credits.
How the mechanics turned
Mechanically, Hashi pairs MPC custody with smart-contracted collateral management: BTC stays under MPC control while smart contracts assert and manage collateral positions for borrowers and lenders on-chain. That combination is designed so lenders can verify collateral programmatically while private keys remain distributed across custodial nodes rather than held by a single hot wallet. The design therefore addresses two classic frictions in BTC lending markets at once — cryptographic custody separation and transparent, automated collateral checks — within an architecture built on Sui. Cointelegraph covered the protocol’s custody and smart-contract approach.
Why credit teams care
For credit and risk teams, the immediate practical implication is that BTC holders can borrow stablecoins against on-chain collateral with programmatic management. Because the custody layer is MPC-based, institutional counterparties can consider supplying liquidity through familiar custody integrations rather than taking direct custody themselves — a factor explicitly noted in the protocol’s design rationale. If executed as described, this model could make it easier for institutions to provide liquidity into BTC-backed lending markets without changing their custody posture.
Those outcomes are particularly relevant when contrasted with the current size of BTC deployed into DeFi: roughly $3.07 billion, about 0.22% of BTC supply according to aggregated metrics. That small base means there is meaningful room for institutional liquidity to increase BTC’s DeFi footprint if trust and integration hurdles are resolved.
Why the episode mattered for lenders
Hashi’s staging — devnet development, MPC custody plus smart contracts, and a planned mainnet in 2026 — is a mechanics-first demonstration of how BTC can be mobilized into lending while preserving institutional custody practices. The concrete lesson for lenders is this: programmatic on-chain verification layered on top of MPC custody creates a credible pathway for institutions to put balance-sheet liquidity to work in BTC-backed lending without wholesale changes to existing custody arrangements.
Assetify judgment: Hashi’s combination of MPC custody and smart-contract collateral management shows a practical route for institutions to deploy liquidity into BTC lending, and if the protocol reaches mainnet as planned it could materially expand BTC’s tiny DeFi footprint from its current 0.22% level.
