A Blockchain‐Based Certificate Verification and Revocation System Using Bloom and Cuckoo Filter

The existence of counterfeit certificates presents threats to deserving graduates as well as reduces public trust in institutions. The existing methods, which are mainly paper‐based, and a very few methods that are digitized and inefficient since certificates can be easily tampered with, lack transparency, and are also very time‐consuming. To tackle these challenges mainly, this paper suggests an integrated strategy based on a hybrid blockchain for issuance, revocation, and verification of educational certificates, which will prevent certificates from being tampered. Hash function mapping has been implemented into our proposed solution, and efficiency has been enhanced through the Bloom filter and Cuckoo filter , and the scan score of the smart contract is 96.83 . The performance of the proposed solution is measured through gas consumption in terms of execution and transaction costs. A comparative analysis has been shown between similar types of existing solutions. The cost regarding the deployment of smart contracts is drastically minimal for the proposed framework. In addition, the revocation of certificates is improved using the cuckoo filter. The evaluation section demonstrates the immense reduction of search time for unavailable certificates. © 2026 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.