Independent proof your email was sent.
Proof-Track anchors a cryptographic fingerprint of your outbound email to a public blockchain. Anyone — a court, a counterparty, an auditor — can verify what was sent and when, without trusting you or us.
How it works
No new email client. No plugin. Add one address to the messages that matter.
CC or BCC your Proof-Track address
Send as you normally would. Proof-Track receives a copy of the message as it left your server.
We hash the message
Headers, body and attachments are reduced to a SHA-256 fingerprint. The content itself never goes on-chain.
The fingerprint is written to a public blockchain
The chain's timestamp becomes a tamper-evident record that this exact message existed at that moment.
Anyone can check it
Share the receipt. A third party re-hashes the original email and matches it on-chain — no account needed.
Built for messages that get disputed
"I never got that email" stops being an argument.
Legal & notices
Contract notices, demand letters, lease and termination notices with a verifiable send record.
Compliance
Disclosures and regulatory correspondence with an audit trail that doesn't depend on your own logs.
Business agreements
Quotes, acceptances and change orders — proof of what was offered, and when.
Privacy-first
Only a hash is public. Message content stays private unless you choose to disclose it.
Request access
Proof-Track is in closed access. Request an invite or send us a question — we reply personally.