Interlay BTC Review 2026: Bitcoin Bridge and iBTC Explained

Interlay is a bridge that lets Bitcoin holders use their BTC in decentralized finance without selling it. The project says it issues iBTC, a token pegged 1:1 to BTC locked in vaults, which can then be used in apps on other networks. The homepage presents it as a one-stop place for Bitcoin DeFi, covering swaps, borrowing, leverage and staking.

The project is run by Interlay Labs and governed through its INTR token, according to the homepage. The homepage also lists a developer SDK, documentation, a bug bounty, a block explorer and a node-operator program. The site shows a live Launch App link, and public sources include no report of a shutdown.

The main claims are that the system is trustless, decentralized and insured by collateral. Those claims are the ones to test most carefully, because public sources give no auditor names, insurance terms or vault statistics beyond the homepage's headline figures. The homepage reports DeFi volume of about $53 million and 17 supported networks, but the project does not say over what period or how these figures are measured.

Interlay sits between Bitcoin and other blockchains. The core idea is that native BTC stays locked on the Bitcoin network while an equivalent amount of iBTC is issued on a supported chain. A user sends BTC to a vault, which is an operator that holds the locked coins. Once the BTC is confirmed, the user receives iBTC at a 1:1 ratio.

iBTC is then a token that can be used in DeFi apps. The homepage describes uses such as swapping, borrowing against it, creating leveraged positions and earning yield. Redeeming works in reverse: the user returns iBTC, and the vault releases the matching native BTC on Bitcoin.

The security model rests on vault collateral and the bridge's design. The homepage says vaults post collateral in assets such as USDT and DOT, and that this collateral is meant to insure users if a vault fails. How much collateral is required, how liquidations or payouts work, and how the system handles a large withdrawal are not described publicly.

The project does not publish Interlay's fees for minting, redeeming, swapping or borrowing. The homepage says vault operators earn fees on BTC volume, but gives no rate. Check the app and documentation before any transaction, since fees may also depend on the network where iBTC is used.

Interlay's main risks come from the bridge design. Users rely on vault operators to hold locked BTC, and on smart contracts that track minting and redemption. A bug, a vault failure or a collateral shortfall could leave iBTC unbacked or delay redemption. The homepage says collateral insurance covers users, but the project does not describe the terms, limits or who pays.

The homepage says the system has been audited and links to an audit page. The project does not name auditors, dates or the audited versions, and the public TVL dashboard lists no audits. Treat the audit claim as something to verify on the audit page rather than as a settled fact.

The project does not describe Interlay's regulatory status in any jurisdiction, and they name no licence. Using a bridge and holding a DeFi token can carry tax and legal obligations that vary by country, so check the rules where you live. Crypto assets can lose value quickly, and you can lose the full amount you put in.

Interlay is for Bitcoin holders who want to use their BTC in DeFi apps on other networks and understand bridge mechanics. It is less suited to users who need published fees, insurance terms or a regulated provider, since the project does not provide these.