Technical

Topic	Replies	Views	Activity
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…	0	1266	July 11, 2022
About the Technical category	0	1401	March 22, 2017
Why add issuer option(mobile wallet) returns diferents pubkey each time	1	606	July 9, 2025
Google Play App Not Available	1	87	June 4, 2025
Apple App store link on https://wallet.blockcerts.org/	2	138	April 9, 2025
How can I create my own Context?	1	118	April 9, 2025
Error: SignedTransaction object has no attribute 'rawTransaction'	1	1282	March 27, 2025
How to generate Verifiable Presentation with cert-issuer?	9	199	February 28, 2025
Creating a verifiable certificate page for my students	0	94	February 21, 2025
How to Securely Verify a Blockcert Credentials?	2	181	January 21, 2025
Can I use email for credentialSubject.id in blockcerts v3?	2	96	January 18, 2025
Not able to host certificate on eth testnet(sepolia) due to insufficient balance despite having balance 10x more than required	0	95	December 30, 2024
Blockcerts wallet on Android does not add v3 certificates	6	220	October 21, 2024
Adding additional fields (cert-tools)	2	964	August 9, 2024
Create Certificate Template	4	501	June 24, 2024
Failed JSON-LD normalization	9	661	March 7, 2024
displayHTML- "some html code":SOLVED	6	1442	February 23, 2024
Docker build -t bc/cert-issuer:1.0 setup	0	188	February 23, 2024
Help Needed with Blockcerts Universal Verifier for Japan Open Chain	3	406	January 8, 2024
Avoiding malicious transactions to be added in blockchain	4	2654	October 8, 2023
Chain property of the resulting Json when verifying the certificate is not formatted	0	369	July 28, 2023
Is this GDPR compliant?	1	425	July 13, 2023
How to ensure the legitimacy of did	2	468	July 10, 2023
Getting an error when i try to instantiate_certificate_batch.py in cert_tools repo	1	421	July 5, 2023
Is recipient wallet necessary?	4	488	May 31, 2023
Mexican State University wants to issue Digital Credential in their language accreditations	0	405	May 12, 2023
About the verification process	2	633	February 14, 2023
Introducing Smart Contracts to BlockCerts	1	2941	January 21, 2023
What is sign_certificate method	2	483	January 3, 2023
Error generating test.json file . cert-tools :: the following arguments are required: --issuer_id	9	1124	January 3, 2023

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…