Proof that can't be erased
Timestamp any message permanently on IPFS, verified by a Nano transaction.
What is Timeproof?
Timeproof is a proof-of-existence service. You write a message, pay a small Nano fee, and your message is permanently stored on IPFS — the InterPlanetary File System. The Nano transaction acts as an immutable timestamp on the blockchain.
No one can alter it. No one can delete it. Not even us.
How it works
Up to 1,000 characters. Plain text, permanently recorded. A short proof-of-work challenge runs in your browser to prevent spam — no account or email needed.
Scan the QR code or copy the address. Instant, feeless payment. You have 5 minutes to complete it.
Your message is stored on the decentralized web. You get an IPFS content ID (CID).
Anyone can check the IPFS CID and the Nano transaction independently. No trust required.
Why Nano?
Nano is a digital currency with zero fees and instant settlement. No mining, no gas costs, no waiting for block confirmations. You pay exactly what you see — nothing more.
Pricing
Each message costs more as the platform fills up. The price is locked in at the moment you submit.
| Tier | Messages | Price each |
|---|---|---|
| 1 | 900,000 | $1 |
| 2 | 90,000 | $10 |
| 3 | 9,000 | $100 |
| 4 | 900 | $1,000 |
| 5 | 90 | $10,000 |
| 6 | 9 | $100,000 |
| 7 (last) | 1 | $1,000,000 |
Total capacity: 1,000,000 messages.
Why IPFS?
IPFS is a peer-to-peer storage network. Content is addressed by its cryptographic hash, not by location. This means your message can't be tampered with — if a single character changes, the hash changes. The CID is the proof.
Pin your own copy
Timeproof pins every published message to our IPFS node, but a single node is a single point of failure. If you run your own IPFS node, you can pin all Timeproof messages — making the data more resilient and ensuring it survives even if this server goes offline.
All published CIDs are available via /api/cids/ as a JSON feed. Point your pinning workflow at this endpoint to keep your node in sync.
Use cases
- Timestamp an idea or invention before publishing
- Record a prediction with a verifiable date
- Preserve a statement that can't be retracted
- Create a public, immutable record of intent
Content responsibility
Timeproof is a neutral, permissionless platform. We do not review, moderate, filter, or censor any message content. Once a message is published, it cannot be altered or removed — by anyone, including us.
We accept zero responsibility for the content of any message posted through this service. Each user is solely responsible for what they publish. By using Timeproof, you acknowledge that your message will be permanently and publicly recorded.
Privacy
No tracking cookies. No third-party scripts. No client-side analytics.
We collect anonymised server-side analytics (pageviews and payment funnel events). Your IP address is never stored — it is hashed with a daily salt before any data is written. No cookies are set for this purpose and no consent banner is required.
The only cookie set is a strictly necessary session cookie used to manage the payment flow, exempt from consent requirements under ePrivacy Directive Article 5(3).
Contact
Questions or concerns? Reach us at timeproof@proton.me.