Demo · synthetic dataThis is what a substrate-built fintech product looks like running. UI is interactive — click any payment, customer, or mandate to drill in. Data is synthetic but consistent across all views.

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Payment

pi_3PqBgd24gc99qeuamx

One-off purchase

succeeded

Amount

€43.15

Method

SEPA Direct Debit

Created

2026-05-08 14:38:31

Customer

Eva Nieminen

cust_c4ecf64a

Emaileva.nieminen@vendor.example

IBAN hashiban-80404338189d

KYCverified

Tenantvendor-eu

Tenancy + posture

Tenantvendor-eu

Tenant-gate checkpassed

Stripe webhook signatureverified

Webhook replay window≤ 5 min · enforced

PCI-DSS scopeSAQ-A · no PAN

AI Act Art. 12 logimmutable append-only

Audit chain · 2 events for this payment

View full audit log →

Every event references the FNV-1a hash of the previous event in the global audit chain. Tampering with any event breaks the chain and is detected by the daily integrity job (next run 03:00 UTC).

  1. 14:38:31
    tenant-gateisolation check passed tenant=vendor-eu · row.tenant_id matches session
    prev54c3e670hash06a5d93e
  2. 14:38:31
    stripe.webhookverified signature, ingested pi_3PqBgd24gc99qeuamx · sepa_debit.succeeded
    preve2698308hash54c3e670