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KYC and attestation

KYC and attestation are what feed : the verified outcome of a KYC run becomes the portable, KYC-verified identity a user carries across products. Sumvin turns the raw outcome of a KYC run — an identity document, a liveness check, a sanctions screen — into a small set of attestation claims that a verifier can consume on a . The raw KYC data stays with the identity-verification provider and with Sumvin; the verifier only sees the attestation.

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The pipeline

  1. The partner runs KYC in one of three modes: WebSDK, hybrid, or document-only. See the KYC guide for each mode’s shape.
  2. The identity-verification provider returns a verified identity outcome to Sumvin. Sumvin stores the user’s name and the link to the applicant record; the full PII remains with the provider.
  3. On token exchange, the user’s KYC outcome surfaces on the issued JWT as the kyc_status claim, and — when the scope envelope requests them — as further attestations like age_over_18 or proof_of_personhood. Together these claims are what make Sigil a portable Proof of Personhood.

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What a verifier trusts

The verifier trusts the SIS signature on the JWT. The chain of trust is: 
Identity-verification provider
  → Sumvin (stores outcome, gates on scope)
  → SIS (signs the JWT)
  → Verifier (validates signature against JWKS)
A verifier accepting a kyc_status: verified claim is transitively trusting the identity-verification provider via Sumvin via SIS. A verifier that needs to inspect underlying KYC documents (not just the status) requests sr:us:pint:identity:kyc_read — the scoped SIS lookup endpoint then returns the document metadata to the verifier’s API key.

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See also

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Referenced from