Skip to content
PointSav Digital Systems

Merkle proofs as a substrate primitive

← All revisions

61ed7fe2 · PointSav Digital Systems ·

content(quality-pass): institution POV elevation — 97 articles updated, 32 new from drafts-outbound

View the full record as of this revision →

@@ -5,10 +5,10 @@ slug: merkle-proofs-as-substrate-primitive
category: substrate
type: topic
quality: complete
short_description: "Merkle proofs are the cryptographic mechanism that lets Foundry's substrate guarantee — to any third party, without trust — that a specific record is part of an append-only log and that the log has not been rewritten between two observed points in time."
short_description: "Merkle proofs are the cryptographic mechanism that lets the platform substrate guarantee — to any third party, without trust — that a specific record is part of an append-only log and that the log has not been rewritten between two observed points in time."
status: active
bcsc_class: no-disclosure-implication
last_edited: 2026-05-22
last_edited: 2026-05-25
editor: pointsav-engineering
cites: []
references:
@@ -22,7 +22,7 @@ paired_with: merkle-proofs-as-substrate-primitive.es.md
---


> Merkle proofs are the cryptographic mechanism that lets Foundry's substrate guarantee — to any third party, without trust — that a specific record is part of an append-only log, and that the log has not been rewritten between two observed points in time.
> Merkle proofs are the cryptographic mechanism that lets the platform substrate guarantee — to any third party, without trust — that a specific record is part of an append-only log, and that the log has not been rewritten between two observed points in time.

These two guarantees together form the read-side and the replication-safety side of the Capability Ledger Substrate. This article explains what Merkle proofs are, why two distinct flavours exist, how the `system-core` crate implements both per RFC 9162 Certificate Transparency 2.0, and how the `system-ledger` crate uses them to gate write-side validity without degrading the read-side hot path.
Important Information

Important Information

Corporate structure. PointSav Digital Systems ("PointSav") is a trade name of Woodfine Capital Projects Inc. ("Woodfine"). PointSav does not itself offer, sell, or solicit any security. Any securities offering associated with Woodfine's real-property direct-hold solutions is made exclusively by Woodfine, and only by means of the applicable Private Placement Memorandum.

No investment advice. This wiki's content is provided for engineering, operational, research, and development purposes. Nothing on this wiki constitutes investment advice or a solicitation to invest in any Woodfine partnership or direct-hold solution.

Intellectual property. The PointSav name, trade name, wordmark, and marks, together with all current and future PointSav- and Totebox-branded products, services, and offerings — and the software, source code, documentation, design system, and all related materials — are proprietary to Woodfine and its affiliates, except for components identified as open source. No rights are granted except as expressly set out in a written license or agreement. See TRADEMARK.md in this repository for the full trademark notice.

Open source components. Portions of the platform are made available under permissive open-source licenses identified in the accompanying repository. Use of those components is governed by their respective license terms.

No warranty; informational use. Content on this wiki is provided for general informational purposes only and does not constitute a representation, warranty, or commitment with respect to product functionality, availability, pricing, or roadmap. Some articles describe planned or intended features, capabilities, and milestones — language such as "planned," "intended," "targeted," "may," and "expected" marks this forward-looking content, which is subject to change and does not constitute a commitment regarding future performance.

Confidentiality. Where an article describes an operational or deployment detail that is not intended for public disclosure, that article is not published on this wiki. Content here is general-purpose engineering documentation, not customer-specific configuration.

Jurisdiction. Woodfine Capital Projects Inc. is organized in British Columbia, Canada. References to the Sovereign Data Foundation on this wiki describe a planned or intended initiative only, not a current equity holder or active governance body.

Changes to this notice. PointSav may update this notice from time to time; the version posted on this page governs.

Not a filing system. This wiki is not a securities filing system, an electronic disclosure repository, or a substitute for SEDAR+ or any other regulatory filing system. Formal securities filings are made through the applicable regulatory filing system, not through this wiki.

Full disclaimer. This notice supplements, and does not replace, the full Disclaimers article. In the event of any conflict, the full Disclaimers article governs.

Read the full disclaimer →