Every transaction. Every state.
Every moment in time.
Immutable transaction history for banking, payments, and trading. Time-travel any account balance. Complete audit trail with cryptographic integrity.
The transaction log your regulators expect
Immutable Transaction Log
Every debit, credit, transfer, and fee is an append-only event. No record can be altered after the fact. The WAL with CRC32 checksums guarantees bit-level integrity.
Point-in-Time Balance Reconstruction
Replay events up to any timestamp to reconstruct exact account balances. Answer 'what was the balance at 3:47 PM on March 12th?' in milliseconds, not hours.
Regulatory Compliance (MiFID II, SOX)
Full audit trail with provenance metadata satisfies MiFID II transaction reporting, SOX internal controls, and SOC2 data integrity requirements out of the box.
Double-Entry Verification via Projections
Define projections that enforce double-entry bookkeeping invariants. Every credit has a matching debit. Projections catch imbalances in real-time, not in end-of-day reconciliation.
Sub-Microsecond Reconciliation
Reconcile accounts across systems with 11.9us query latency. Cross-reference transaction logs from multiple sources and flag discrepancies instantly.
Multi-Tenant Isolation for Client Accounts
Each client account is a separate tenant with isolated event streams. RBAC ensures relationship managers see only their clients. Zero data leakage between accounts.
Time-travel any account balance
Reconstruct the exact balance at any point in history
# What was account balance at market close on March 15th?
curl -s https://api.all-source.xyz/api/v1/events/query \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{
"entity_id": "acct-001-trading",
"as_of": "2026-03-15T16:00:00Z",
"event_type": "transaction.*"
}'
# {"events": [...], "count": 2341}
# Replay all 2,341 transactions to get exact balance: $1,247,892.43
# Compare with end-of-day balance from counterparty system
curl -s https://api.all-source.xyz/api/v1/projections/account-balance \
-H "Authorization: Bearer $API_KEY" \
-G -d "entity_id=acct-001-trading" \
-d "as_of=2026-03-15T16:00:00Z"
# {"projection": {"balance": 1247892.43, "currency": "USD",
# "last_tx": "2026-03-15T15:59:47Z", "tx_count": 2341}}
# Reconciliation complete — balances match to the centYour ledger of record
Immutable transactions, instant time-travel, and regulatory compliance built into the storage engine. Not bolted on after.