Instant Proof of Existence
Timestamp any SHA-256 hash in milliseconds. Zero setup, zero tokens, predictable cost.
🔐 Privacy-first • ⚡ Edge-native • 🧠 AI-ready
The universal proof layer for AI and developers.
Hash locally. Timestamp via API. Verify publicly.
No blockchain, no gas — just cryptographic truth.
✓ Hash-only (content stays local)
✓ HMAC-SHA256 server signature
✓ Cloudflare Workers + KV
✓ Public verification endpoint
Why developers choose TimeProofs
AI & Agents First
Attach proofs to prompts, outputs, and workflows to build auditable pipelines in minutes.
Private by Design
Only hashes are sent and stored. Your original content never leaves your device.
How it works
Hash locally
Compute SHA-256 on client or server.
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('');Timestamp
POST the hash — get back timestamp, signature, and a verify_url.
const r = await fetch("https://timeproofs-api.jeason-bacoul.workers.dev/api/timestamp", {
method:"POST", headers:{ "Content-Type":"application/json" },
body: JSON.stringify({ hash, type:"event", meta:{ source:"web" } })
});
const proof = await r.json();Verify anywhere
Anyone can confirm existence via the public endpoint.
const res = await fetch(
"https://timeproofs-api.jeason-bacoul.workers.dev/api/verify?hash="+hash
);
const check = await res.json();30-second Quickstart
// POST /timestamp { hash, type?, meta? }
// GET /verify?hash=... → { ok, found, timestamp, signature }
// Base (beta): https://timeproofs-api.jeason-bacoul.workers.dev/api