A timestamped certificate — anchored to Bitcoin — that protects your work from the moment it's created.
Plagiarism and AI-made imitations are rising. Reposts and "remixes" can steal credit and income. Without proof of originality, disputes are hard to win—and the worry never stops.
Upload any file to get instant Bitcoin-backed proof
Drag & drop your file here
or click to browse • Any file type • No size limits
✅ Timestamp complete — proof anchored on Bitcoin.
🕓 Proof created; the Bitcoin Explorer link appears after confirmation (usually a few hours).
Creating timestamp proof...
You've used all 3 free proofs this month. Upgrade to create unlimited timestamps.
Your file stays private—we only see a digital fingerprint.
Chain drafts → revisions → release for continuous proof.
Public, immutable verification that lasts forever.
Whether you're an artist, writer, or content creator—protect your work with blockchain-backed proof.
Share with confidence—prove you made it first.
Dispute reposts with a neutral on-chain timestamp.
Timestamp drafts and scripts without revealing content.
From demo to master—timestamp takes, stems, mixes, and lyrics.
Prove capture date and edits—without exposing your RAWs.
Protect concepts and iterations—establish ownership before client delivery.
"As a digital artist, my proof ended a dispute instantly."
— Marina, Illustrator
"Clients love the certificate—adds instant credibility."
— Jason, Writer
"We timestamp all concept art & code—now we sleep better."
— Avery, Design Lead
ProofYouWereFirst uses the OpenTimestamps Protocol, an open-source standard trusted by developers worldwide since 2012.
If your proof doesn't verify on the Bitcoin blockchain, we'll refund you immediately—no questions asked.
We're confident in our technology. Your proof is permanent, verifiable, and backed by Bitcoin.
Blockchain timestamps (including Bitcoin-anchored proofs via OpenTimestamps) are increasingly recognized as valid electronic evidence of a file's existence at a specific time.
Note: A blockchain timestamp proves existence at a particular time. To establish authorship/ownership, link the proof to your identity (e.g., your account) and retain supporting records (drafts, workflows, or registrations where applicable).
Questions about confirmations or privacy?
Read the FAQ →✅ Thanks — you're on the waitlist!
Real creators sharing how ProofYouWereFirst protects their work
"Copyright-style protection for my art"
— Visual Artist
"Peace of mind for every upload"
— Digital Creator
"Saved me in a copyright dispute!"
— Content Creator