AOA Bi-Monthly Technology Update| October-November, 2021

1) Smart contract version upgraded from v 0.8.1, to v 0.8.10, support Arithmetic operations revert on underflow and overflow.
2) Research EIP-4488, Reduce the cost of calldata.
3) Aurora add ethereum account system 35% complete.
4) Research exploring incremental verification and SNARKS without pairings,5% complete.
5) Inter-node communication is done by grpc to reduce the size of transferred data and thus increase the speed of communication, 85% completed.
6) Investigate the zero-knowledge proof zk-SNARKs technology to enhance the privacy of chain transactions, 95% completed.
7) New Viper language support is added to the underlying layer of smart contracts,90% of benchmarking progress.
8）Verification of trust between proxy nodes is done by the CA certificate with RSA symmetric encryption, 85% completed by using cryptography theory to ensure the verification of trust between nodes.
9) Smart contract data splitting scheme has entered the development stage, through consistency hash plus virtual link points to solve the uneven distribution of data status quo, 60% completed.
10) integrate verkle trees into trie,reduce the cost of data transmission, 10%.