Collateral Lock-and-Mint Mechanisms

Collateral Lock-and-Mint Mechanisms are the primary way assets are moved between chains in a bridge. A user locks their native token in a smart contract on the source chain, and the bridge protocol mints a corresponding wrapped token on the destination chain.

The locked assets act as collateral for the wrapped tokens. If the collateral is ever compromised, the wrapped tokens lose their value.

This mechanism is inherently risky because it relies on the security of the bridge's custody of the collateral. It requires rigorous monitoring and often decentralized validator sets to mitigate the risk of theft.

This is the foundation for most cross-chain liquidity in decentralized finance. It allows for the use of assets across diverse blockchain ecosystems.