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_3PqBd1ajvl1ub3xnce

Add-on · usage overage

declined

Amount

€31.65

Method

Card · via Stripe

Created

2026-05-07 14:00:05

Customer

Bruno Kovač

cust_07820fe0

Emailbruno.kovač@acme.example

IBAN hashiban-e9dfe4fe2710

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. 14:00:05
    tenant-gateisolation check passed tenant=acme-co · row.tenant_id matches session
    prevff50665chash60a0f0e2
  2. 14:00:05
    stripe.webhookverified signature, ingested pi_3PqBd1ajvl1ub3xnce · payment_intent.failed
    preva69fff81hashff50665c