# Dynamic Hidden Committee (DHC)

Different from existing cross-chain solutions, Bool Network applies an external verification model to securely process cross-chain messages in a decentralized and distributed manner. Dynamic Hidden Committee (DHC) is proposed to guarantee the security of omnichain applications built on top of it. Each DHC manages a private key in Bool Network and the private key is distributed into key shares and stored in the DHC members, i.e a group of MPC nodes. 

DHC follows a decentralized signature scheme which uses its underlying private key to sign cross-chain messages and yield signatures as on-chain verifiable "claims" to indicate the validity of cross-chain messages. 

More specifically, each user in Bool Network can deploy his application-specific DHCs to serve his own application's cross-chain bridge. Bool Network has provided a comprehensive [interface](https://boolscan.com/dashboard/) for its users, i.e. bridge builders, to construct their personal and customizable bridge safeguards (DHC) and on-chain message endpoints ([`Anchor`](https://docs.bool.network/evm-ecosystem/smart-contracts/on-chain-endpoint-anchor/anchor.sol)).  

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Bool Network Testnet has been launched and developers can follow the guides provided [here](https://docs.bool.network/evm-ecosystem/amt-bridges) to build bridges and test their cross-chain applications in EVM ecosystems.
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