DAR is an open, minimal receipt for a digital action —
a portable record that can be independently verified later without special access,
shared systems, or trust assumptions.
SV-DAR strengthens this foundation for high-stakes environments where
incentives conflict: audits, disputes, and cross-organization automation.
DAR is open. You can issue/store receipts anywhere. We monetize optional tools (verification, chain operations, intelligence) and SV-DAR capabilities.
Most systems can tell you what happened internally. DAR makes that evidence portable and verifiable — when trust breaks down, vendors change, or an audit/dispute happens months later.
Reduce “he said / she said” by producing a cryptographic receipt of the action — without exposing internal logs or special access.
Verify what happened even after teams, vendors, or systems change. Receipts stay valid as long as the artifacts are available.
When autonomous systems make decisions, DAR provides a neutral record of the action — not a judgment of correctness.
A DAR is like a bank receipt: it proves a thing occurred. You can hand it to someone else and they can verify it without trusting you.
DAR doesn’t enforce policy or decide who was “right.” It creates a shared evidence layer so parties can verify what happened.
DAR is simple: create a minimal payload, canonicalize it, hash it, optionally wrap it in an envelope, store it append-only, and verify later. SV-DAR adds stronger guarantees when incentives conflict.
The payload is the hashed object. The envelope is transport metadata. Verification recomputes the receipt hash from the payload only.
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DAR works when parties are aligned. SV-DAR is for when they aren’t: disputes, regulatory scrutiny, and cross-vendor automation where incentives conflict.
Designed for environments where basic signatures are not enough for independent confidence at scale.
Built for workflows spanning parties who don’t share systems, policies, or trust assumptions.
Premium guarantees and tool support for cases where evidence must remain defensible under scrutiny.
Optional services applied to DAR/SV-DAR: verification at scale, chain operations, intelligence, and audit-ready reporting. Receipts are free to exist and verify independently. You pay only when systems are asked to do work.
Signature validity (if present), schema compliance, and hash integrity — single or batch verification.
Detect gaps, ordering conflicts, and broken references across receipt chains and graphs.
Summaries, anomaly detection, policy checks, and audit-ready exports when accountability is required.
Receipts are free to exist, share, and verify. Fees apply only when systems perform computation — traversal, aggregation, anchoring, analysis, or reporting — never to access or verify truth.
The verifier is the first tool. Additional optional tooling will support chain operations, exports, and audit-ready evidence bundles.
Start in minutes with open specs and reference code. Keep production systems vendor-neutral and independently verifiable.
// Issue a receipt (self-hosted) const receipt = issueDAR(payload, privateKey) // Verify a receipt (anywhere) const result = verifyDAR(receipt) if (!result.ok) throw new Error(result.reason)
Keep it simple: payload → canonicalize → hash → store → verify.
Keep the foundation open. Monetize the work: verification at scale, chain operations, intelligence, and SV-DAR premium guarantees.
SV-DAR and tools are the monetized layer. DAR remains open and implementation-agnostic.