Trusted Execution Layer

The Trusted Execution Layer is an integral part of the BitAcross protocol, designed to enhance the security and efficiency of transactions within the Bitcoin network. This layer plays a pivotal role in managing and executing transactions, particularly for Bitcoin-based assets like BRC-20 tokens. Here are the key components and functionalities of the Trusted Execution Layer:

  • Bitcoin Vault Management: The layer features a Bitcoin vault that is pivotal in processing transactions on the Bitcoin network. This vault acts as a secure storage for Bitcoin assets, ensuring their safety and accessibility for authorized transactions.

  • Controlled Execution by TEE Nodes: The execution of transactions and operations within this layer is exclusively controlled by the commands issued from the TEE nodes in the Security Layer. This setup ensures that all actions undertaken in the Trusted Execution Layer are secure, authenticated, and comply with the protocol's overall security guidelines.

  • Decentralized Credential Management: The credentials for accessing the Bitcoin vault are generated and maintained in a decentralized manner by different enclaves within the Security Layer. This decentralization is crucial for preventing single points of failure and for enhancing the overall security of the vault.

  • Integrity and Availability of the Bitcoin Wallet: The Security Layer plays a significant role in ensuring the integrity and availability of the Bitcoin wallet associated with the vault. By safeguarding the wallet credentials and overseeing access, the Security Layer ensures that the wallet remains secure and functional at all times.

  • Approval Process for Credential Updates: Any updates or changes to the Bitcoin credentials require approval from the nodes within the Security Layer. This process ensures that any modifications to the access credentials are collectively agreed upon, maintaining a high level of security and consensus within the network.

  • Enhanced Security with Cold Wallets: To further boost security, the Trusted Execution Layer incorporates the use of cold wallets for multi-signature signing with Partially Signed Bitcoin Transactions (PSBT). Cold wallets, being offline storage, provide an additional layer of security against online threats, while multi-signature signing ensures that transactions are authorized by multiple parties, reducing the risk of unauthorized access or fraudulent activities.

The Trusted Execution Layer, with its advanced security measures and controlled execution protocols, plays a crucial role in the BitAcross protocol. It ensures that Bitcoin transactions are processed securely and efficiently, adhering to the highest standards of security and trust, essential for the successful operation of cross-chain functionalities in the blockchain ecosystem.