The invention relates to the technical field of information, in particular to a block chain-based carbon
neutralization verification system, which comprises a
production line access subsystem, a carbon confluence access subsystem, a
carbon sink certificate subsystem, a transaction subsystem and a cancel-after-
verification subsystem, the carbon confluence access subsystem determines the carbon confluence amount per unit time of a carbon confluence, the carbon confluence
certificate subsystem periodically generates carbon confluence certificates, a token is generated on a block chain, the token and the
certificate number are the same, the transaction subsystem uploads transaction information to the block chain, and the
verification subsystem receives carbon confluence
certificate verification request information of an enterprise and sends the verification request information to the carbon confluence access subsystem. And if the sum of the denominations of the
carbon sink quantity of the
carbon sink certificates cancelled after verification of the associated
production line number in the period is not lower than the determined carbon emission, the carbon
neutralization verification of the
production line is determined to be passed. The method has the substantive effects that automatic periodic cancel-after-verification can be realized, and the execution of carbon
neutralization is ensured; the reduction of carbon emission is facilitated.