Mail blacklist sharing method based on block chain

The invention discloses a block chain-based mail blacklist sharing method. An alliance chain comprises a reporting node, an accounting node, a service node and a supervision node; when submitting blacklist data, the report node accepts supervision of the supervision node, the supervision node performs corresponding evaluation on the report node, and when a certain evaluation index is met, the report node is rewarded or punished; the mail blacklist sharing method comprises the steps of blacklist report data generation, blacklist data accounting, blacklist data synchronous updating, service and blacklist member node supervision. According to the invention, the block chain technology is applied to the mail blacklist system, the properties of decentralization, tampering resistance and the like of the block chain are fully utilized, a blacklist node scoring mechanism is added, the integration of blacklist data is realized, and the openness, transparency and tampering resistance of the blacklist data and the overal