Definition ∞ A multisig bridge is a blockchain bridge that uses a multi-signature mechanism to secure asset transfers between different networks. This type of bridge relies on a group of designated validators or custodians, where a majority of their cryptographic signatures are required to authorize cross-chain transactions. The multi-signature setup adds a layer of security by distributing control, reducing the risk of a single point of failure or malicious activity from any individual participant. It aims to ensure the integrity and safety of assets during their movement across disparate blockchain ecosystems.
Context ∞ Multisig bridges are a frequent topic in crypto news, especially following high-profile bridge exploits where centralized control points were targeted. Discussions often focus on the security implications of the chosen multisig threshold and the trustworthiness of the key holders. Future developments are exploring more decentralized and trust-minimized bridge designs, such as zero-knowledge proofs, to move beyond reliance on multisig committees for ultimate security.
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