.png){kind=small}
What we’ve built
TimeProofs is an open, neutral protocol for digital proof of existence. Not just for AI. For every digital creation and dataset. One proof readable by any ProofSpec-compliant tool.
🔐 Privacy-first • ⚡ Edge-native • 🌍 Open Protocol
The Open Standard for Digital Proof of Existence
A public specification (ProofSpec) and a simple API to prove when something existed and that it hasn’t changed. Works for any data — AI outputs, research, legal, creative, code, medical and industrial records.
✓ Hash-only✓ Signed timestamp (HMAC-SHA256)✓ Public verification
What we’ve built — and why it matters
Why it matters
In a world of generated and modified content, proof becomes as essential as encryption or HTTPS. TimeProofs gives each file and API a verifiable history: when it existed and what hasn’t changed.
Protocol vs API
Protocol — ProofSpec
Open rules, interoperable, peer-verifiable. Public specification designed to become a global standard.
API — Reference implementation
Production-ready, edge-native, predictable cost. Copy-paste examples and verifiable logs.
How it works
Model: Hash locally → Signed timestamp → Public verification
1) Hash locally
const buf = new TextEncoder().encode(text);
const digest = await crypto.subtle.digest('SHA-256', buf);
const hash = [...new Uint8Array(digest)]
.map(b => b.toString(16).padStart(2,'0')).join('');2) Timestamp
const r = await fetch("https://api.timeproofs.io/api/timestamp", {
method:"POST", headers:{ "Content-Type":"application/json" },
body: JSON.stringify({ hash, type:"event", meta:{ source:"web" } })
});
const proof = await r.json();3) Verify anywhere
const res = await fetch(
"https://api.timeproofs.io/api/verify?hash="+hash
);
const check = await res.json();Why organizations choose TimeProofs
Instant Proof
Millisecond timestamps. Zero tokens. Predictable pricing.
Private by Design
Hash-only. Original content never leaves the device.
Interoperable
One proof readable by any ProofSpec-compliant tool.
Enterprise-ready
OpenAPI, copy-paste examples, verifiable logs.
No lock-in
Public verification by anyone, including outside our API.
Edge-native
Fast, efficient, built for modern architectures.
Why TimeProofs is becoming a Global Standard
Open & Auditable Protocol
ProofSpec, open-source, peer-verifiable. Public, neutral, and durable.
Aligned with Global Regulations
Ready for EU AI Act, DSA, Data Act, C2PA, GDPR. Supports traceability, authenticity, and integrity requirements.
Ethical, Neutral, Open
No blockchain, no personal data, no vendor lock-in. Verifiable by anyone, forever.
Future-Proof by Design
For humans and AI agents. Globally reproducible, energy-efficient, edge-first.
Badges: Privacy-first · Open verification · No blockchain
Compliance focus
TimeProofs helps organizations demonstrate when data existed and that it hasn’t changed — a core requirement echoed across global AI and data regulations.
Use cases
AI outputs
Prompts, generations, agent workflows.
Legal & Notary
Contracts, policies, evidence files.
Research & Publications
Preprints, datasets, lab notebooks.
Creative works
Designs, music, video, photography.
Software supply chain
Source code, releases, SBOM artifacts.
Medical & Industrial
Clinical data, IoT logs, QA records.
What We’ve Created
ProofSpec™ — our invention
A universal framework to certify when any data existed and that it hasn’t changed — without storing the content itself.
Protected & open
Open-source licensed (e.g., MPL/Apache) with official filings (e-Soleau, trademark, ProofSpec publication). TimeProofs is the reference implementation of the protocol.