Q: What is it?

A: A tool to prove that a file existed before a particular time.

  • FreeTSA.org service and OpenTimestamps.org calendars made easily available to any end-user
  • Cross-platform Linux/Mac/Win
  • Entirely based on free sw, strong cryptography, open standards

Q: Wait… But, Why Timestamping?

A: Because attesting that a file existed before a particular time can be useful to…

  • prove when an agreement was signed, if it is disputed
  • validate a signature after a revocation occurred
  • prove the ownership for copyright
  • grant record Integrity

Q: Wait… But, Why Also on the Blockchain?

A: A classical timestamp provided by a trusted third party - like FreeTSA.org - is very precise (it proves the existence at a particular second), it replies instantly and is a legal standard.

However it can be validated for a limited time (usually no more than 20 years), for technical and economic reasons.

On the other hand, a Blockchain attestation - like that of an OpenTimestamps.org calendar - relies on the Bitcoin’s blockchain, a resilient distributed system, designed to survive perpetually, secured by the thermodynamic value of more than 50 TWh per year (~ 3 bln of $).

However it is less precise (it proves the existence at a particular day), requires time to be confirmed, and is not yet a legal standard.

For all these reasons TimeBags uses both methods - to take advantage of their respective benefits.

Q: Ok, Where Is The Package?

A: Well… it’s still in Alpha version.

But if you are a python developer and you are interested to contribute, the repo is here.

Q: How Is It Made?

A: Combining a bunch of components.