# How to write to blockchain

**URL:** <https://community.blockcerts.org/t/how-to-write-to-blockchain/2237>\
**Category:** Support\
**Created:** [December 25, 2019, 11:14am UTC](https://community.blockcerts.org/t/how-to-write-to-blockchain/2237 "2019-12-25T11:14:14Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![taira](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@taira](https://community.blockcerts.org/u/taira)\
**Post date:** [December 25, 2019, 11:14am UTC](https://community.blockcerts.org/t/how-to-write-to-blockchain/2237/1 "2019-12-25T11:14:14Z")

</div>

Hello, I have many things examined in the project with a very interested.  
To write the certificate on the blockchain,  
・ Write for each certificate  
· Write multiple (up to 2000) certificates together  
I understand that there are two ways.  
Which method do you usually use?