4 Services from sellat.app

Issues an EU eIDAS-qualified RFC 3161 electronic timestamp (.tsr) on a Sellat proof, legally demonstrating a file's existence at a specific point in time across the EU.

Anchors a SHA-256 hash on Polygon blockchain and attests it on Bitcoin via OpenTimestamps, returning a verifiable certificate, proof.json, and evidence ZIP

Issues an EU eIDAS-qualified electronic timestamp (RFC 3161) on an existing Sellat proof, giving it full legal presumption of accuracy before EU courts and authorities under Article 41.2 eIDAS.

Generates a new read-only API key associated with a payer wallet address for the Sellat qualified timestamp service