Decentralized Bridge

The decentralized bridge powered by Surge MetaLayer enables cross-chain transfers between Bitcoin and Gameplan’s rollup. By utilizing advanced cryptographic techniques such as Threshold Signature Scheme (TSS) and the DKLs23 signature scheme, the bridge ensures tamper-resistant, decentralized asset management.

Key Technical Components:

1. TSS DKLs23-Based Decentralized Bridge:

   • Threshold Signature Scheme (TSS) distributes control over private keys across multiple participants, ensuring that no single entity can approve a transaction. A predefined number of participants must collaboratively sign to authorize asset transfers, preventing any single point of failure.

   • The DKLs23 signature scheme adds a layer of cryptographic security, making the bridge highly resistant to malicious attacks and unauthorized access.

2. BTC Vault for Peg-In and Peg-Out:

   • Peg-In: When a user transfers BTC into the Gameplan rollup, the BTC is locked in the BTC Vault using TSS. The system mints an equivalent token on Gameplan’s rollup.

   • Peg-Out: When users withdraw assets, the Gameplan token is burned, and the BTC is released from the vault back to the Bitcoin network, ensuring a seamless and secure transfer process.

3. Cross-Chain State Synchronization:

   • The Surge Bridge ties Gameplan’s rollup state changes directly to Bitcoin’s blockchain. This direct link ensures the security and transparency of asset transfers while preventing double spending.

4. zk-Proof Aggregation:

   • By utilizing zk-proof aggregation, the bridge minimizes the on-chain data footprint. Multiple transactions are bundled into a single proof, reducing transaction costs and enhancing efficiency.

5. Enhanced Security and Efficiency:

   • The use of TSS and zk-proofs ensures both high security and cost-effective operations, making the Surge Bridge a critical infrastructure for trustless cross-chain interactions.