Enter a Seal ID, or upload your copy.
Every Fortax seal carries an FTX- ID. We check its signature, the file’s SHA-256 and its Bitcoin ledger anchor, and tell you at once whether the document is exactly the one that was sealed. No account needed.
Is this document genuine?
Enter a Seal ID, or upload your copy. Both work without an account.
What this seal proves
Plainly, what a seal does and does not say.
The bytes are the same
The file is byte-for-byte the one that was sealed. Change a single comma and the check fails.
Fortax sealed it
The signature comes from Fortax’s certificate, which chains to our root CA.
When it was sealed
The digest is anchored on the public Bitcoin ledger through OpenTimestamps, which no one controls.
What it does not prove
Fortax’s root certificate is self-signed — no public CA has cross-signed it. So a tool like Adobe Reader will not show a green tick on its own; this page is the trust anchor. The cryptographic guarantee is the same, but the issuer’s name is Fortax’s own claim. A seal says nothing about whether what the file says is true — only that it has not been changed.
Root fingerprint: 8b912d2957e9f3795b9109c4ca69b8f25887097db7e3be633222f7c6c73a9a72
Seal your own documents
The Sealed Vault comes with every Fortax account — business or CA firm.