ECO2 Ledger is a blockchain public chain network designed for the global carbon market, which enables carbon sink assets to circulate freely on the blockchain, improves the individual participation of carbon neutrality, and enhances enterprises' awareness of carbon emission reduction, so as to promote the whole society to achieve carbon neutrality. The core of ECO2 Ledger is zero carbon emissions. carbon neutrality procedures have been added to the consensus mechanism at the agreement level, which is also a carbon neutrality driven blockchain system. Meanwhile, the ECO2 public chain is also a Poka ecosystem project that can be integrated into the Poka ecosystem. The ECO2 Ledger utilizes the Substrate technology framework and adopts the NPoS consensus mechanism to elect validators and on chain production blocks. The production block time is 6-12 seconds, and the ECO2 Ledger can process 3000-5000 transactions per second. The total number of issued ECO2 tokens remains constant at 300 million, making it the only practical and governance token on the ECO2 Ledger chain. ECO2 Ledger utilizes blockchain technology to explore the best solution to climate problems. ECO2 hopes to establish a global low-carbon consensus, gather various forces, jointly reduce greenhouse gas emissions, and alleviate climate warming issues....