# Verify ethereum certificate (ropsten)

**URL:** https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065
**Category:** Technical
**Created:** [May 25, 2018, 1:22am UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065 "2018-05-25T01:22:11Z")
**Posts on this page:** 7
**Page:** 1

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### Author: ![jdelprado](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@jdelprado](https://community.blockcerts.org/u/jdelprado)
#### Post date: [May 25, 2018, 1:22am UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/1 "2018-05-25T01:22:11Z")

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Hello,

I have a problem verifying a certificate generated with cert-issuer.

I’m trying to verify it with its online verifier, but it gives me an error.

 ![Captura%20de%20pantalla%20de%202018-05-25%2000-17-55](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/0829a686a7757d87bcf5875e67fdfccdd8609def.png)

In the conf.ini file of the cert-tools project I have this:

 ![conf](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/9a4cab40d78a5de15db6e9987920286d481668d2.png)

And in the conf.ini file of the cert-issuer project:

 ![conf2](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/bb632902a16888fa5455b85c51fabeafb8d4f5f9.png)

Thank you

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### Author: ![aronning](https://avatars.discourse-cdn.com/v4/letter/a/47e85d/32.png) [@aronning](https://community.blockcerts.org/u/aronning)
#### Post date: [May 25, 2018, 4:56pm UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/2 "2018-05-25T16:56:51Z")

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@jdelprado,

I believe this is a case sensitivity issue, where your issuing\_address has some capital letters but from the looks of it, I think most blockchain explorers return back all lowercase addresses. Try lowercasing that issuing\_address and see if that helps. Meanwhile, I’ll file a ticket to handle case sensitivity for Ethereum since it doesn’t matter for it.

Edit: Filed a ticket for it here: [https://github.com/blockchain-certificates/cert-verifier-js/issues/25](https://github.com/blockchain-certificates/cert-verifier-js/issues/25)

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### Author: ![jdelprado](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@jdelprado](https://community.blockcerts.org/u/jdelprado)
#### Post date: [May 28, 2018, 1:40pm UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/3 "2018-05-28T13:40:40Z")

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@aronning thank you very much, the problem was resolved.

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### Author: ![aronning](https://avatars.discourse-cdn.com/v4/letter/a/47e85d/32.png) [@aronning](https://community.blockcerts.org/u/aronning)
#### Post date: [May 31, 2018, 4:02pm UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/4 "2018-05-31T16:02:21Z")

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You’re welcome! Just as a FYI, this issue in general has been fixed, the sensitivity of addresses will not cause the cert-verifier-js to fail.

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### Author: ![angelus](https://sea2.discourse-cdn.com/flex016/user_avatar/community.blockcerts.org/angelus/32/372_2.png) [@angelus](https://community.blockcerts.org/u/angelus)
#### Post date: [June 1, 2018, 10:13pm UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/5 "2018-06-01T22:13:20Z")

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Thank you, its works for me

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### Author: ![sreenumalae](https://sea2.discourse-cdn.com/flex016/user_avatar/community.blockcerts.org/sreenumalae/32/773_2.png) [@sreenumalae](https://community.blockcerts.org/u/sreenumalae)
#### Post date: [June 22, 2021, 9:01am UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/6 "2021-06-22T09:01:42Z")

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I’m also facing a similar kind of issue and even tried to change the caps to small letters in the issuing address.

 ![Screenshot 2021-06-22 at 2.31.27 PM](https://us1.discourse-cdn.com/flex016/uploads/blockcerts/original/1X/e2232a3f65aa1d4f03bacd5e7b804db7e2a3ca9d.png)

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### Author: ![lemoustachiste](https://avatars.discourse-cdn.com/v4/letter/l/7c8e57/32.png) [@lemoustachiste](https://community.blockcerts.org/u/lemoustachiste)
#### Post date: [June 30, 2021, 1:55pm UTC](https://community.blockcerts.org/t/verify-ethereum-certificate-ropsten/1065/7 "2021-06-30T13:55:03Z")

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You would need to list the key used to issue this certs in the issuer profile: [cert-issuer/profile.json at master · blockchain-certificates/cert-issuer · GitHub](https://github.com/blockchain-certificates/cert-issuer/blob/master/examples/issuer/profile.json#L12)