Technical


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FAQ - technical issues

AttributeError: ‘CertificateBatchHandler’ object has no attribute ‘certificates_to_issue’ Solution: Error: with cert_issuer -c conf.ini(AttributeError: ‘CertificateBatchHandler’ object has no attribute 'certificates_t…

2 132 July 11, 2022
About the Technical category
0 1065 March 22, 2017
Error with cert-verifier
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Error: Issue the certificates on the blockchain
1 568 July 11, 2022
Error with cert issuer - ethereum
2 890 November 14, 2018
ReferenceError: self is not defined
3 155 June 27, 2022
Error: with cert_issuer -c conf.ini(AttributeError: ‘CertificateBatchHandler’ object has no attribute 'certificates_to_issue’)
2 148 June 15, 2022
Blockcerts issued on Ethereum network
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ModuleNotFoundError: No module named 'ethereum'
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Flask app Cert-Issuer for Ethereum
3 440 May 18, 2022
Error Installing Cert-Tools and Cert-Issuer in a Single Docker container. Getting Coincurve Error
2 153 May 18, 2022
Could not retrieve a JSON-LD document from the URL
4 473 April 30, 2022
Getting Invalid Bitcoin address error while executing "bitcoin-cli sendtoaddress $issuer 5" command
0 145 April 28, 2022
Adding support for hashlink images
0 146 April 6, 2022
Introducing Smart Contracts to BlockCerts
0 1674 February 19, 2020
Issue with wallet fund: cert_issuer.errors.InsufficientFundsError
6 433 October 14, 2021
Important vulnerability patched: unhashed display property
0 156 March 8, 2022
Adding BSV blockchain handler
5 180 March 8, 2022
Blockcert for Polygon?
1 221 March 8, 2022
Student private key usage?
2 240 March 3, 2022
Running Cert-issuer without cert-issuer command
1 217 February 28, 2022
Code changes not getting reflected for Cert-Issuer
2 195 February 17, 2022
Combining Cert-tool and cert issuer
0 204 February 16, 2022
Can you issue a batch of certificates in a Merkle tree with different issuers?
1 271 November 2, 2021
Moodle certificates w/ Blockcerts
4 1537 October 25, 2021
How to add PDF file into blockcert json file
1 661 September 22, 2021
Generating recipient keys
4 888 July 21, 2021
Social Share and Metadata in Blockcerts
5 795 July 12, 2021
Verify ethereum certificate (ropsten)
6 1178 June 30, 2021
Storing Keys of Multiple Issuers
1 567 June 27, 2021