Verify UK HMRC Identity NIN — Reclaim Protocol

Verifies data from UK HMRC Identity (tax.service.gov.uk).

UK NIN and UTR proof

Primary data point: NIN.

Reclaim Protocol generates a zero-knowledge proof that a user holds an active UK HMRC Identity session and exposes the following verifiable data points:

• NIN
• Address
• Name
• UTR

How it works

1. Your user starts a verification session and signs in to UK HMRC Identity as they normally would.
2. Reclaim Protocol observes the encrypted UK HMRC Identity session through a zero-knowledge proof system, with no credentials leaving the user's device.
3. Your application receives a cryptographic proof of the user's data — verifiable on-chain or in your own backend.

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