Is EverCert free to use?

Yes. EverCert is free to use and does not require an account. You can create and verify proofs at no cost.

Do you upload my document when creating a proof?

No. Your file never leaves your device. Only a secure fingerprint is sent to create the document proof.

Is the proof permanent?

Yes. Once created, your proof cannot be changed. After it is anchored to Bitcoin, it becomes a permanent, independently verifiable record.

Can I verify a proof without EverCert?

Yes. Your proof works independently. You can verify it yourself using free, open-source tools.

Why does verification sometimes say "pending"?

Proofs are created immediately and later anchored to Bitcoin. Until that happens, the timestamp proof is valid, but verification will show as pending.

Use Case — Passport Photos

How to Prove When Your Passport Photo Was Taken

U.S. passport photos must be taken within the last 6 months. A Bitcoin-anchored timestamp proves exactly when yours was created.

The 6-Month Rule

The U.S. Department of State requires that passport photos be taken within the last 6 months. This applies to new applications, renewals, and replacement passports. If a passport agency questions whether your photo meets the recency requirement, you need a way to prove when it was taken.

Digital photos carry metadata (EXIF data) that includes a creation date — but EXIF data is trivially easy to modify. Anyone with a basic photo editor can change the date a photo was supposedly taken. This means EXIF dates prove nothing in a dispute.

What you need is an independent, tamper-proof record that the photo existed in its exact form on a specific date — one that cannot be backdated or altered after the fact.

Timestamp Your Passport Photo

When you timestamp a passport photo with EverCert, its entire contents are hashed using SHA-256 — producing a unique cryptographic fingerprint. This fingerprint is anchored to the Bitcoin blockchain via OpenTimestamps, creating a permanent public record.

The result is a tamper-proof proof of date. If the photo is altered in any way after timestamping — even a single pixel — the hash is completely different and verification fails. The proof is independently verifiable by anyone using open-source tools.

Your photo never leaves your device. Only the hash is transmitted. The process is free and takes under 30 seconds.

How It Works

1Create your passport photo using Kindro — take a photo with your smartphone and get a compliant U.S. passport photo in seconds
2Go to EverCert and drop the photo file into the upload area
3Download the proof package (PDF certificate + .ots proof file)
4Store the proof alongside your passport application documents

Once anchored to Bitcoin (typically within 1-2 hours), the proof is permanent and independently verifiable — no reliance on EverCert, Kindro, or any third party.

Why This Matters

•Passport applications can take months to process — a photo that was compliant when submitted may be questioned months later
•Expedited passport processing adds scrutiny — having verifiable proof of the photo date removes one potential delay
•The same approach works for visa applications, immigration documents, and any official photo with a recency requirement
•The cost is zero and the process takes under 30 seconds

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Create Passport Photo Timestamp a Document

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