Solv Protocol, a decentralized finance (DeFi) platform that manages over USD 700 million in tokenized Bitcoin (BTC) assets, has announced it is retiring its LayerZero bridges and migrating to Chainlink Cross-Chain Interoperability Protocol (CCIP) as its official cross-chain infrastructure solution. The migration will affect SolvBTC and xSolvBTC across all supported chains, including Corn, Berachain, Rootstock, and TAC.
Why Solv Protocol is betting on Chainlink CCIP
Solv made the choice to partner with Chainlink after conducting an extensive security analysis due to recent high-profile industry incidents, such as the KelpDAO USD 292 million exploit linked to a LayerZero-powered bridge using only one verifier as its source of verification. Solv stated that cross-chain bridges continue to be one of the most critical risk areas and are considered overall high-risk in DeFi. If there are vulnerabilities in cross-chain bridges, the risk goes beyond the specific vulnerability, bringing systemic risk across the industry.
To understand this better, the difference between the Chainlink CCIP security model and other cross-chain bridges is that all transactions on CCIP will be verified through multiple independent node operators, utilizing decentralized oracles to validate the data provided by each of those independent verifiers (rather than a single verifier).
The reason for this security structure is to allow a separate Risk Management Network to check for any anomalies or signs of fraudulent activity and halt suspicious transactions. Chainlink CCIP has been recognized as “the gold standard for decentralized interoperability” and has also been formally endorsed by the White House as critical infrastructure for the digital asset ecosystem.
How Solv’s tokenized BTC Works
Launched in 2021 on Ethereum, Solv Protocol is built around SolvBTC (a token tied to the value of Bitcoin), that lets users deploy wrapped BTC (WBTC) and other Bitcoin-based assets across multiple blockchains to, ultimately, earn yield. The idea behind the migration to CCIP is to ensure that cross-chain transfers of these assets are secured by what Solv calls “the most battle-hardened and time-tested interoperability infrastructure across all blockchains.”
Community reaction and industry shift
Solv’s announcement follows KelpDAO’s own decision to migrate from LayerZero to Chainlink CCIP on May 5. KelpDAO publicly refuted LayerZero’s claim about the exploit by accusing them of approving their single-verifier configuration. On this matter, with ‘DeFi United’ (a DeFi coalition to support the industry) and the Arbitrum governance team’s efforts, USD 71 million in ETH were approved to be released to the exploit victims.
The increasing scrutiny of the security of cross-chain bridges in DeFi reflects the ongoing number of significant hacks associated with them, including the Roninbridge hack, which lost USD 622 million, as well as the WazirX hack, where over USD 230 million had been lost, both of which are believed to have been perpetrated by North Korean hacking groups.
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