Bug: Duplicate usernames shown in registry browser #9
Description
Problem
Same username can appear multiple times in the registry if multiple attestations exist for the same identity.
Root Cause
The Identity schema does not enforce uniqueness at attestation time. A user can create multiple attestations for the same username.
Example: allenday has two attestations:
0x432d3257...(time: 1761247746)0x84793dd7...(time: 1761244842)
Same wallet, same signature, different gist URLs.
Current Fix
Frontend dedupe in RegistryBrowser.tsx (commit 84df411) - keeps only the latest attestation per username.
Proper Fix Options
- Revocation - Revoke older duplicate attestations
- On-chain uniqueness - Add check in attestation flow to prevent duplicates
- Resolver enforcement - UsernameUniqueResolver could reject duplicate attestations
Status
- Frontend workaround deployed (84df411)
- Decide on proper fix approach
- Implement proper fix