# Blockcerts V3 Proposal - Verifiable Credentials & Decentralized Identifiers

**URL:** https://community.blockcerts.org/t/blockcerts-v3-proposal-verifiable-credentials-decentralized-identifiers/2221
**Category:** Community
**Created:** [December 11, 2019, 3:21pm UTC](https://community.blockcerts.org/t/blockcerts-v3-proposal-verifiable-credentials-decentralized-identifiers/2221 "2019-12-11T15:21:27Z")
**Posts on this page:** 1
**Showing post:** 23

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### Author: ![yosuke](https://avatars.discourse-cdn.com/v4/letter/y/f17d59/32.png) [@yosuke](https://community.blockcerts.org/u/yosuke)
#### Post date: [February 21, 2021, 6:59pm UTC](https://community.blockcerts.org/t/blockcerts-v3-proposal-verifiable-credentials-decentralized-identifiers/2221/23 "2021-02-21T18:59:30Z")

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I just post my proposal here !!

If you want to issue V3, you can use my PR!!

> [@Fix iso format for v3 in cert-tool](https://community.blockcerts.org/t/fix-iso-format-for-v3-in-cert-tool/2753):
>
> I just found the problem of iso\_format between cert\_tool and cert\_issuer in V3. When I tried to issue the template that I created with cert\_tool, I got the format error because the value of “issueOn” did not match the method validated below. And this is from cert-tool. Hence, I just send the PR for cert-tool to adjust for cert-issuer’s validater as the proposal. if there is any better way than this one, just let me know!!

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