A basic Linux library to stamp files based on the blockchain

Warning

The Stampery API and Stamp.io services appear to have been suspended for maintenance for an undefined time.

Description

The library uses the Stampery API which allows to prove the existence, integrity and ownership of arbitrary data by anchoring (embedding) unique identifiers (hashes) of files and datasets into the Ethereum and Bitcoin blockchains.

Requirements

• an authentication token, obtained at https://api-dashboard.stampery.com/tokens
• a Linux system with the Bash shell
• the command line JSON processor jq
• the OpenTimestamps client

Usage

$ export API_CLIENT_ID=<your client ID>
$ export API_SECRET=<your secret key>

$ source stampery-lib

$ stamp <file>
5c6b36de4c7c43000408ff93

$ list_receipts_by_id 5c6b36de4c7c43000408ff93

A video clip demonstrating a typical usage pattern is available at https://youtu.be/8AtweGnW7Kk.