Where is the merkle tree of certificate hashes stored?

In cert-issuer intro https://github.com/blockchain-certificates/cert-issuer, there is a description The root of the Merkle tree, which is a 256-bit hash, is issued on the Bitcoin blockchain.

My questions are:
1 how to get the entire info of Merkle tree during verification? Will the entire Merkel tree be stored in each final certerficate?
2 what the difference between bitcoin and etherum on the storage of merkle tree for a batch of certificate hashes?

Thanks for your help!


  1. the entire tree isn’t stored anywhere. Each cert keeps the needed parts to build its own “proof” of this tree.
  2. None