Data show: Ethereum has reached the original Istanbul upgrade height data shows that the current Ethereum block height has reached 9069000, and the Istanbul upgrade is complete. It is reported that this Istanbul upgrade contains 6 improvement proposals: 1) EIP-152: add Blake2 pre-programmed functions; 2) EIP-1108: reduce alt_bn128 pre-compiled Gas cost; 3) EIP-1344: add ChainID opcode; 4) EIP-1884: redefine the trie-size-based opcode; 5) EIP-2028: reduce the Calldata Gas fee; 6) EIP-2200: redefine the net value of the SSTORE Gas fee in consideration of the changes in the SLOAD Gas fee.