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UD Signer
UDSN
Digitally sign Universal Documents with cryptographic proof and chain of custody.
∞
Free lifetime access
$100
Pro credit
★
Founding Tester status
⚡
Early access always
Your testing checklist
1.
Sign a .udr file — converts to .uds correctly?
2.
Check the seal hash is correct after signing
3.
Verify a signed document in UD Reader
4.
Sign the same file twice — second signing handled?
5.
Sign with a custom signer name
6.
Check chain of custody includes the signing event
7.
Download the signed file and re-verify
8.
Try signing a .uds file (already sealed)
9.
Test on mobile
10.
Sign a large document — no timeout?
Apply to be a Founding Tester
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Germany
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Device *
Select device
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Both
Browser *
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Chrome
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I agree to provide honest, specific feedback within 7 days.
Apply to be a Founding Tester →
No ads. No investors. No agenda. —
Hive