BRC-169 handle binding
A normalized ecosystem handle bound to an identity public key.
The attestation
A normalized ecosystem handle bound to an identity public key.
Standard schema defined by an open specification.
How Sigma Identity verified it
A conforming BRC-169 ecosystem-host handle certificate.
Sigma validates the evidence immediately before signing. Field values are encrypted by your wallet; Sigma compares decrypted claims against current authoritative records and returns a signed BRC-52 certificate without receiving your private keys.
Encrypted certificate fields
| Field | Description | Type |
|---|---|---|
Domain domain | The internet domain the certificate attests to. | string |
Handle handle | The normalized ecosystem handle bound to the identity key. | string |
Selective disclosure
Certificates remain private in your wallet until you explicitly reveal fields to a named verifier. Applications request proofs through BRC-100; your wallet encrypts each field and returns a keyring only for the fields you approve.
Verifiers see only the fields you disclose. Other encrypted fields stay encrypted. Listing certificates in your wallet does not make them public.
Get this certificate in BSV Desktop
- 1
Import the Sigma trust manifest
In BSV Desktop, add Sigma Identity as a trusted certifier by importing https://auth.sigmaidentity.com/manifest.json and confirming the published public key.
- 2
Complete qualifying evidence
Sign in to Sigma Identity and satisfy the evidence requirement described above for this certificate type.
- 3
Acquire through your wallet
Request acquisition for BRC-169 handle binding. Your wallet encrypts the field values, authenticates with Sigma over BRC-103/104, and stores the signed certificate locally.
Revocation and reissue
Every Sigma certificate includes a funded revocation outpoint once production issuance is enabled. A verifier that observes the outpoint spent must stop trusting the certificate immediately.
Revoking a certificate does not erase copies already disclosed to verifiers. Local relinquishment removes the certificate from your wallet only. Reissue requires fresh evidence and a new acquisition request when your evidence or account state changes.
Certifier and type reference
Sigma Identity public key
02250905f0383085b53409876aefbf01fc8e7fd841922dc4ce55ae035b31341e6d
Wallet credentials API
Read the certificates API reference for BRC-100 lifecycle, permissions, and endpoint details.
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