# Documents

# Abstract

The documents module allows a user to share a document to other users. Then, the receivers can send back to the sender a receipt proving that they have seen the document.


  • We are not actually sharing Documents on a blockchain.
  • We are sharing a transaction on a blockchain with a document footprint (HASH)

An hash is the output of a hashing algorithm like SHA (Secure Hash Algorithm). These algorithms essentially aim to produce a unique, fixed-length string – the hash value, or “message digest” – for any given piece of data or “message”.

As every electronic file is just data that can be represented in binary form, a hashing algorithm can take that data and run a complex calculation on it and output a fixed-length string as the result of the calculation.

The result is the file’s hash value or message digest.

'Sharing a Document' on Commercio.network means sending a shareDoc transaction on a blockchain with your document hash.

# ShareDoc real world use cases

  • Legally prove a document was shared with a third party
  • Timestamp a document
  • Prove the existence of document
  • Notarize a document

# Contents

  1. State
  2. Messages
  3. Events
  4. Client