It’s a tool for writing data to blockchain such that you can prove it existed at the time it was anchored. Here’s a link to their CLI tool.
Here’s how it works (more or less):
– After you submit a hash of your data to their protocol, they anchor to their network (chainpoint network).
– Their nodes aggregate hashes in merkle tree structure and the root of the tree is published in a bitcoin transaction
Here’s what is unclear to me:
– when you use the CLI tool, response to submitting a hash is three unique ‘hash_node_id’
– you use one of the ‘hash_node_id’ to verify a proof
So my question is, what is the ‘hash_node_id’ and why are you using it to verify a proof? They say the following : ‘A proof that anchors your hash to the Calendar is generally available within ten seconds or less.’ -> this is the ‘hash_node_id’. How does this prove that my data is anchored anywhere and further, how the tool prove that my data has existed in the time it was stored?