Error with cert-verifier

Technical
1

I executed cert-issuer with unsighned_certificate and got a blockchain_certificate, so I tried cert-verifier to verify my blockchain_certificate, but I got this error

cert_core.UnknownBlockcertVersionException

スクリーンショット (793)
スクリーンショット (793)1208×376 18.6 KB

Anyone can help this??

unsighned_certificate
{
“@context”: [
“https://www.w3.org/2018/credentials/v1”,
{
“alumniOf”: {
“@id”: “alumniOf - Schema.org Property”,
“@type”: “http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML”
}
},
“https://w3id.org/blockcerts/v3”
],
“id”: “urn:uuid:bbba8553-8ec1-445f-82c9-a57251dd731c”,
“type”: [
“VerifiableCredential”,
“BlockcertsCredential”
],
“issuer”: “did:example:23adb1f712ebc6f1c276eba4dfa”,
“issuanceDate”: “2022-01-01T19:33:24Z”,
“credentialSubject”: {
“id”: “did:example:ebfeb1f712ebc6f1c276e12ec21”,
“alumniOf”: {
“id”: “did:example:c276e12ec21ebfeb1f712ebc6f1”
}
}
}

blockchain_certificate
{“@context”: [“https://www.w3.org/2018/credentials/v1”, {“alumniOf”: {“@id”: “alumniOf - Schema.org Property”, “@type”: “http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML”}}, “https://w3id.org/blockcerts/v3”], “id”: “urn:uuid:bbba8553-8ec1-445f-82c9-a57251dd731c”, “type”: [“VerifiableCredential”, “BlockcertsCredential”], “issuer”: “did:example:23adb1f712ebc6f1c276eba4dfa”, “issuanceDate”: “2022-01-01T19:33:24Z”, “credentialSubject”: {“id”: “did:example:ebfeb1f712ebc6f1c276e12ec21”, “alumniOf”: {“id”: “did:example:c276e12ec21ebfeb1f712ebc6f1”}}, “proof”: {“type”: “MerkleProof2019”, “created”: “2022-07-10T14:42:39.560411”, “proofValue”: “zMcm4LfQFUZkWZxsDRz3yhkRgM24ZG2M9EFRxhEsrgHDxohmrk1nbhnfwXMKawnRZAfiZuFs34GroEWma5UZi2gqAQvArwRFYhbQqqMgEJWj6NpSpE8o97FuQBPiRLhQRWUpoh1aVu2nyvSTmW2JfAY5nrHekag6Vv7wrLinUEj8D2PiLcGa5SUBVc6yFb7keuTD4MSFTQdBCc4xgpyCi2dho8nPMSSNVQrFUa2pWbL2vEdiEzfkwnELvYaadZNDA1sfJHxpThzZsTZJZ18GBWQLDe6fVrWkmfQgzPLpvBHQaCBUa5s”, “proofPurpose”: “assertionMethod”, “verificationMethod”: “did:key:z6Mkkxadrz78Zbw2NAABLmUq4JJv838hg2BDQ45buoSETGVG”}}

2

Yeah, the python cert-verifier library has not been maintained in very long, if not deprecated.
To verify your cert you should use cert-verifier-js which you can run on node GitHub - blockchain-certificates/cert-verifier-js: Javascript library for verifying Blockcerts Certificates. There is an example here: cert-verifier-js/server.js at master · blockchain-certificates/cert-verifier-js · GitHub

3

Ah I see. I’ll try it! Thanks