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_3PqBwzwkqtvgqwbb1r

Subscription · Enterprise plan · monthly

succeeded

Amount

€1,071.51

Method

SEPA Direct Debit

Created

2026-05-07 17:56:02

Customer

Rafael Rinaldi

cust_aa29d3f3

Emailrafael.rinaldi@vendor.example

IBAN hashiban-b8698903dd2d

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. 17:56:02
    tenant-gateisolation check passed tenant=vendor-eu · row.tenant_id matches session
    prevad442694hash6cc0985c
  2. 17:56:02
    stripe.webhookverified signature, ingested pi_3PqBwzwkqtvgqwbb1r · sepa_debit.succeeded
    prev27ccfc91hashad442694