StampRight is opinionated about doing one thing well — proof — and giving you every supporting feature that makes proof useful in the real world. Contracts, IP, integrations, ops. All under one roof.
A universal schema for every agreement, every file, every claim — with browser-side hashing so the proof exists before anything reaches the network.
Rental, equipment rental, service agreement, sale of asset, bill of sale, promissory note, NDA, affidavit. Each fills the universal schema with sensible defaults — edit anything before stamping.
Photograph, music, video, manuscript, source file, design — anything with a file extension. Hashed locally; only the hash plus optional metadata reaches our server.
Phone or laptop camera direct from the browser. Snap the photo, we hash it on-device, anchor the moment. No upload step.
One model covers sale, purchase, transfer, rental, service. Parties, subject, terms, consideration, dates — stamped as a structured envelope alongside the hash.
Your files never leave your device. We can only see what you choose to include in the metadata envelope. Maximum proof, minimum exposure.
Optional structured content alongside the receipt: titles, parties, terms, file metadata. Up to 64 KB JSON. Lives off-chain, round-trips with the proof bundle.
The whole point: no one has to trust StampRight for the proof to hold up. Every receipt is self-contained, exportable, and re-verifiable on a chain we don't control alone.
Every receipt comes with a public URL anyone can open. Shows the proof status, what was stamped, by whom. No account, no login, no installs.
Single-file JSON bundle: receipt, chain anchor, metadata envelope, legal evidence pack. Hand it to a lawyer, an auditor, a court.
One-click print or save as PDF for offline storage and physical filing. The verifier URL is embedded as a QR code on the bottom of every page.
Receipts stay verifiable as long as the chain exists — independent of StampRight as a company. No "what if the company goes away" anxiety.
Owners can revoke receipts on the same chain. The verifier reflects the revocation immediately and forever.
Third parties can attach claims to a subject hash — "I verified this", "I granted these rights" — without changing the underlying proof.
REST, webhooks, three SDKs, OpenAPI. Drop StampRight into a CRM, a property-management platform, a creator tool — in an afternoon.
Set a notify-email on any stamp. The counterparty receives a branded email with the verifier link the second stamping completes.
Subscribe to receipt and attestation events from your own systems. Signed HMAC headers, retry-with-backoff, full delivery log.
Single resource: receipts. Three SDKs — TypeScript, Swift, Kotlin — keep the wire shape identical across web, iOS, and Android.
Generate clients in any language. Documented endpoints for every operation the platform supports.
One deployment serves many businesses. Per-tenant API keys, per-tenant scoping, no cross-tenant leakage. Built in from day one.
Scoped server-side keys for operational tasks — revocations, key rotation, audit reads — without compromising end-user identity.
Receipts are critical evidence. The platform that produces them is engineered like the financial infrastructure it ultimately replaces.
Stamps return instantly from our database. The anchor on our own chain follows transparently within ~16 seconds — vendor-neutral, so receipts stay verifiable independent of StampRight's commercial survival.
Replays with the same idempotency key return the same receipt. Network glitches, retries, multi-device duplicates — never accidentally double-stamp.
Receipts carry markers for post-quantum signature migration. When PQC becomes mandatory, your existing receipts upgrade without breaking the chain.
HMAC signing secrets are stored AES-256-GCM at rest. Signing-key rotation supported. No plaintext secrets in the database, ever.
Managed PostgreSQL with PITR, Caddy auto-TLS, daily backups, body-size caps, payload validation, fail-fast env validation at boot.
The whole platform is open-source. Run your own on a VPS. Mid-market customers can keep proof in-house when they need to.
Receipts will emit C2PA Content Credentials manifests so they interoperate with Adobe, Microsoft, Sony, and the broader provenance ecosystem. eIDAS 2.0 qualified-timestamp profile lined up for EU enterprise. Regulated buyers covered before the mandates land.
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