Beta · Free forever
UD Petition
FREE FOREVERCreate a tamper-evident petition. The petition text is cryptographically sealed before the first signature — mathematical proof it was never altered.
Petition
Signatories
How UD Petition differs from change.org or email campaigns
Text sealed before signing
On change.org, petition text can be edited after signatures are collected — a known problem. UD Petition seals the text first. Every signatory signs exactly the same version.
Cryptographic proof
The SHA-256 hash of the petition text is embedded in every signature record. Mathematical proof the text was never altered after the first signature.
No platform dependency
The petition bundle is a .udz file you own. It cannot be taken down, deplatformed, or have its data sold.
Individual signature records
Each signatory gets a personal .uds signature record with a tamper-evident timestamp. Suitable for submission to government bodies.