BitGo is replacing LayerZero with Chainlink's Cross-Chain Interoperability Protocol as the exclusive cross-chain provider for WBTC, a move that puts Chainlink's messaging and asset-pool system behind about $7.3 billion of wrapped bitcoin.
The decision is part of a larger migration from LayerZero to Chainlink. Announced moves by Mantle, Kelp, Lombard, Solv, Virtuals, Re and Kraken bring the total value associated with the shift to roughly $14.5 billion to $14.6 billion, according to CoinDesk.
WBTC is a tokenized representation of bitcoin used on other networks. BitGo remains responsible for the WBTC token contract and retains controls over rate limits and transfer settings. Chainlink provides the cross-chain communication rail that lets the asset move between supported networks, with an official directory entry describing its WBTC asset pool.
A security decision after a damaging exploit
The migration wave began after a $292 million exploit involving Kelp, which increased scrutiny of the systems that move tokens between chains. Bridges and messaging protocols sit between an asset issuer and the networks where users trade or lend it, so a failure in the cross-chain layer can put a large supply at risk even when the underlying bitcoin custody remains intact.
Moving providers does not remove that risk. It changes the set of contracts, validators, permissions and operational procedures that need to be monitored. WBTC's design also leaves BitGo with important administrative controls, making the security model a combination of issuer governance, custody and Chainlink's cross-chain infrastructure.
There is no completion date for the WBTC migration. The meaningful milestones will be the networks that switch first, the handling of existing balances during the transition, and whether users can move assets without delays or fragmented liquidity. The scale of the change makes the rollout itself a test of how the industry wants wrapped assets to be secured across chains.
