Sign & Verify

Your word,
made portable.

Seal what you send, and your word travels with the document — checkable by anyone, anywhere, in one click. Today, or ten years from now.

Your signature used to mean something because it was hard to fake and easy to check. Then documents went digital, and a “signature” became a picture pasted into a PDF — easy to fake, impossible to check. TrustDID gives your name its weight back.

1

Seal it

One right-click when you issue the document. The seal is yours alone — tied to your identity at your own web domain.

2

Send it anywhere

A tiny companion file rides along — email, download, USB stick. The original is never modified.

3

Anyone can check it — free

Your customers pay nothing to verify. One click answers both questions:

Is it genuine?Yes
Who vouches for it?A supplier on your list
Genuine — and from a sender you trust.

That second line is what a pasted signature can never give you: not just intact, but vouched for — by a trust registry the receiver chooses to rely on. Your reputation, attached to every document that carries your name.

Signatures that verify forever

Here's the question nobody asks until it's too late: what happens to a signed contract in five years — after you've changed keys, changed providers, or moved on?

With most e-signature services, your proof lives exactly as long as your subscription. With TrustDID, every key you ever use is kept in a tamper-evident history. When someone verifies an old document, TrustDID finds the key that was valid on the day it was signed and checks against that. Rotate keys yearly, recover from a lost laptop, restructure the company — every signature you ever made keeps verifying.

Retired identities stay published forever. If you ever leave, signing stops — but every document you ever sealed remains checkable. That's a commitment, not a feature.

One half of that is yours to hold up. Your identity lives at your own domain, so documents signed under it stay checkable for exactly as long as you keep that domain registered and answering. We keep the keys and the history; you keep the address. (On a hosted identity, the address is ours — and we keep it alive for you.)

Ready for the quantum era

Every seal carries two signatures: today's proven cryptography and a quantum-resistant signature standardized for the decades ahead. Documents you seal now stay provable in a world where yesterday's crypto doesn't. And because time matters as much as keys, provable time pins down when — with a timestamp nobody can rewind.

Put your name on it — for good.