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Proof of Existence

LanguagesWebAssembly / AssemblyScript
Use CaseOwnership Verification
Cost to deploy
~0.37 GBP
Cost to transact
~0.01 GBP
Deploy on Klave

Community Certifications

Audited by Imperial College London

proof of existence app

Prove the existence of digital assets easily

An implementation on Klave of a Proof of Existence concept which stores hashes and associates to the hash a timestamp and a block height.

Description

Leverage Klave's cryptographic proof of integrity to prove the existence, certify, or prove the ownership of your digital assets.

The proof existence contract implements an API that provides the following functions:

  • Fetch the proof of existence of a digital asset providing a cryptographically trusted timestamp
  • Store the proof of existence of a digital asset
  • Get the current number of certified digital assets

Features

  • Fetch proof - Fetch the proof of existence of the hash of a document
  • Store proof - Store the proof of existence of the hash of a document
  • Fetch index - Fetch the number of existing documents

Authors

This library is created by Klave and Secretarium team members, with contributions from: