FTB-C000735 / Evidence concept

Signed ledger checkpoint

A signed ledger checkpoint is a digitally signed commitment to a defined ledger state and scope at a stated boundary.

Also known assigned checkpoint

Advanced 5 linked topicsEvidence-reviewed

Definitions

In plain terms

It packages what was committed with the signature and context a verifier needs to assess that commitment.

Technical

D30 A06 verifies exact checkpoint bytes, expected-payload binding and scoped key authorization. A08 separately recomputes retained commitments and applies its declared freshness policy.

Scope

A signature over a checkpoint is not a complete ledger audit or an independent witness.

Examples

  • A synthetic valid checkpoint can still be too old for a verifier's selected freshness requirement.

Common misconceptions

  • Cryptographic validity and current policy acceptance are not the same outcome.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Evidence and governance

  1. RFC 9162: Certificate Transparency Version 2.0, sections 2.1 and 4.10 IETF · official standard

    Supports: preferred label, short definition, variant distinction

    Limits: Experimental, not an Internet Standards Track banking standard; D30 uses its own scoped bytes and checkpoint envelope.

  2. D30 glossary teaching-profile scope, Batch 013 The Fintech Builder · internal governed contract

    Supports: technical definition

    Limits: No independent regulatory mandate, real-bank dataset, service execution, external witness or production assurance is claimed.

Reviewed by
fintech-builder-batch-013
Last reviewed
2026-10-27
Next review
2027-10-27
Record status
evidence reviewed

This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.

Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.