Always balanced. Cryptographically sealed. Built for regulated scale.
Ledger Core is the backbone of every financial product on Techvica. Every transaction produces two matched, immutable legs - permanently timestamped and cryptographically verifiable. Your books never go out of balance. Reconcile in real time - not overnight.
100%
Reconciliation accuracy
10B+
Daily entries supported
T+0
Real-time balance queries
30 days
Replay window for audits
Every transaction produces two immutable entries.
Ledger Core guarantees that every transaction produces two matched, perpetually balanced entries. Our append-only architecture means those entries can never be modified - only superseded by new, auditable corrections.
Every entry carries a cryptographic hash of the previous entry, forming a tamper-evident chain your auditors and regulators can independently verify.
Capabilities
- 01Always-balanced ledger as a service
- 02Immutable, append-only event log
- 03Cryptographic hashing of every entry
- 04Real-time account balance queries
- 05Historical point-in-time queries
- 06Multi-currency account hierarchies
- 07Automated end-of-day reconciliation reports
- 08SQL-queryable ledger endpoint
Ledger entry structure
Entry ID
Unique, immutable identifier
Timestamp
Precise ISO 8601 event time
Origin leg
Source account, amount & currency
Destination leg
Destination account, amount & currency
Cryptographic hash
SHA-256 hash of this entry
Previous hash
Links to prior entry, forming tamper-evident chain
Tamper-evident
Cryptographic hash chain prevents undetected modification.
Point-in-time queries
Query balances at any historical timestamp for audits.
Common questions about Ledger Core
How does Ledger Core guarantee accounts always balance?
Every transaction produces two matched, immutable legs - one on the source account, one on the destination. The ledger enforces balance at write time, before confirmation. There is no reconciliation step that can fail; your books are structurally correct from the moment each transaction is committed.
How does Techvica ensure ledger entries cannot be tampered with?
Every entry is cryptographically linked to the previous one, forming a tamper-evident chain. The ledger is append-only - entries can never be modified or deleted, only superseded by new, auditable corrections. Any tampering breaks the chain and is immediately detectable.
Can I query account balances at a historical point in time?
Yes. Point-in-time queries let you retrieve the exact balance of any account at any historical timestamp. This is essential for month-end close, regulatory reporting, and audit investigations.
How does real-time reconciliation work?
Every payment, FX conversion, and account movement posts to the ledger in real time. Automated end-of-day reconciliation reports flag any discrepancies. You reconcile continuously, not overnight.
What scale can the ledger handle?
Ledger Core is designed for 10B+ daily entries with horizontal scalability. Event sourcing and partitioned storage ensure consistent performance regardless of transaction volume.
Can I query the ledger with SQL?
Yes. We expose a SQL-queryable endpoint that lets you run ad-hoc queries against your full transaction history. You can also connect BI tools directly via our data warehouse connector.
Follow the ledger through the platform
Multi-Currency Accounts
See how balance structures and FX workflows connect back to the ledger model.
Core banking platform UK
Review the wider operating model around ledger, payments, and compliance.
Neobanks
See how ledger design supports UK-first neobank product delivery.