# Difference between verification on mainnet vs testnet
**URL:** https://community.blockcerts.org/t/difference-between-verification-on-mainnet-vs-testnet/547
**Category:** Technical
**Created:** [November 16, 2017, 8:04am UTC](https://community.blockcerts.org/t/difference-between-verification-on-mainnet-vs-testnet/547 "2017-11-16T08:04:22Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@d.hussain](https://community.blockcerts.org/u/d.hussain)
#### Post date: [November 16, 2017, 8:04am UTC](https://community.blockcerts.org/t/difference-between-verification-on-mainnet-vs-testnet/547/1 "2017-11-16T08:04:22Z")
Hi,
I would like to know the difference between verification on testnet vs mainnet. After looking at sample data I noticed that “Checking issuer signature” is missing for testnet certificates. Any explanation will be really helpful.
Also, How many confirmations are required in order to accept the validity of transaction? Is it 6 as on test net I noticed its working with 3 or 4?
Thanks,
Danish
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### Author:  [@kim](https://community.blockcerts.org/u/kim)
#### Post date: [November 16, 2017, 7:10pm UTC](https://community.blockcerts.org/t/difference-between-verification-on-mainnet-vs-testnet/547/2 "2017-11-16T19:10:22Z")
Hi Danish,
The issuer signature check applies to v1.2 Blockcerts and before. As of v2, the only signature check needed is the transaction signature. This applies to both mainnet and testnet.
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### Author:  [@BLOCKCERTYJIN](https://community.blockcerts.org/u/BLOCKCERTYJIN)
#### Post date: [June 11, 2018, 9:24pm UTC](https://community.blockcerts.org/t/difference-between-verification-on-mainnet-vs-testnet/547/3 "2018-06-11T21:24:32Z")
Hi, Kim,
How to generate the transaction signature and check it? Do you have more detailed design document?
Thanks
Ye