Marketplaces & platforms

Seller eligibility and trust gates for marketplaces

Marketplaces grow when buyers trust the listing. That trust is a gate, not a data lake of seller passports.

A used-car marketplace wants every listing to show road-legal status without storing V5 scans on their SaaS stack. Plate Pass and Drive Pass prove the gate. The seller's DVLA lookup stays at the edge.

online marketplace regulationDSA seller traceabilityplatform duty of careseller verification UKtrust and safety ops

Tools in this cluster

Twenty-three public demos prove the same signed yes or no shape. These are the ones we see marketplaces & platforms teams open first.

Live industry proof

Runs a real audit_proof on api.affix-io.com using the kris@affix-io.com ticket-pass service key. Attestation is ML-DSA-65.

Platform metrics

Free Hub trial

100 proofs. No card. Yours in minutes.

Sign up free, confirm your email, and redeem 100 SDK proof credits for 30 days. Run the same benchmarks on your stack before you commit to a licence.

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  • 30-day window to use them
  • No overage on trial

Marketplaces & platforms questions

Do sellers upload documents to AffixIO?

No. Your host evaluates records you already hold or public sources you query locally.

Can we gate categories differently?

Yes. Named circuit policy per category or region.

How do buyers verify a listing proof?

Verifiers pin ML-DSA public keys and check the signed payload.