Sovryn Lend Review 2026: Bitcoin-Backed Loans on Rootstock

Sovryn is a decentralized finance app built around bitcoin on the RSK chain. The public description calls it a non-custodial, permissionless system for bitcoin lending, borrowing and margin trading. Its core product, Zero, is described as letting holders borrow dollar-pegged stablecoins against their bitcoin without selling it.

The homepage advertises 0% interest loans. The directory listing identifies the lending category, the RSK chain and the SOV token. Public search material also describes swaps and margin trading in the same app, with pairs centred on RBTC, SOV and dollar stablecoins.

Most of the detailed public material, including Zero announcements and wiki pages, dates from 2022 and 2023. The materials reviewed do not confirm current borrowing volumes or total value locked, and the directory data shows no figure for either.

Sovryn is a set of smart contracts on the RSK chain, a sidechain that is merge-mined with bitcoin and uses RBTC as its gas token. Users lock bitcoin-based collateral in the protocol and borrow against it, rather than selling it. The loan stays open while the collateral covers the debt.

The Zero product, as described in the public materials, lets users borrow dollar-pegged stablecoins, including DLLR and ZUSD, against their bitcoin. Users open a line of credit, and the collateral ratio determines how much they can borrow and how close the position is to liquidation. If the collateral value falls too far, the position can be liquidated.

Because the system is non-custodial, users keep control through their own wallet, and the contracts enforce the rules. The trade-off is that the mechanism depends on the code and the price feeds that the protocol uses, so newcomers should understand both before borrowing.

The material reviewed does not publish a full fee schedule. The homepage advertises 0% interest on Zero loans, but borrowing costs, liquidation penalties and trading fees are not set out reviewed, so check the live app before borrowing. Transactions on RSK require RBTC for network fees, which users top up in their wallet.

The directory data reviewed lists zero audits for the protocol, and the materials do not name an audit firm or link to a published report. Users should look for audit reports on the official site before committing funds.

The protocol is non-custodial, so there is no company holding deposits. The main risks are smart-contract bugs, price-feed issues and liquidation if collateral values fall. The materials reviewed do not describe any security incident, but they also do not state the team behind the protocol or its regulatory status.

Crypto lending carries a risk of total loss on collateral. Only users aged 18 or over should use these products, and readers should keep their own position sizes small and use the protocol's own risk tools to monitor their collateral ratio.

Sovryn is for bitcoin holders who already understand self-custody and collateral ratios, and who want to borrow dollar-pegged stablecoins without selling their BTC. It is less suited to newcomers, to anyone who cannot tolerate liquidation risk, or to anyone who needs audited, regulated counterparties.