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_3PqBt9g4954lc89jdc

Subscription · Enterprise plan · monthly

succeeded

Amount

€2,778.88

Method

SEPA Direct Debit

Created

2026-05-07 19:55:15

Customer

Lara Lopes

cust_84c8065f

Emaillara.lopes@acme.example

IBAN hashiban-79733d4a370d

KYCverified

Tenantacme-co

Tenancy + posture

Tenantacme-co

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. 19:55:15
    tenant-gateisolation check passed tenant=acme-co · row.tenant_id matches session
    preva63325dahash2d138413
  2. 19:55:15
    stripe.webhookverified signature, ingested pi_3PqBt9g4954lc89jdc · sepa_debit.succeeded
    prev492f487ehasha63325da