Research on Blockchain Cross-Chain Model Based on “NFT + Cross-Chain Bridge”

With the development of blockchain technology and the economy, the demand for data interaction and application collaboration between blockchains is increasing. Due to the differences in the data structure, interface protocols, consensus mechanisms, and even business models, new “chain silos” have been formed among blockchain applications, which limit the interoperability of asset exchange and business collaboration among blockchains. Based on the full analysis of blockchain technology characteristics and blockchain Internet development needs, this paper designs a blockchain cross-chain system based on the unified NFT identity identification technology, address tracking technology, and seamless interconnection of mobile security cross-chain technology, based on the “NFT + Cross-chain bridge”. Based on the service mode, verification mode, and security of Bridges, six model timeliness, smart contract robustness, and convergence radius were selected from 44 cross-chain Bridges for experimental verification. Finally, it is concluded that the overall performance of the blockchain cross-chain system based on “NFT + Cross-chain bridge” is far more universal and better security than the performance of ordinary Bridges.