Question 1

How does ProofSeal create permanent proof for photos?

Accepted Answer

ProofSeal generates two fingerprints per file: a SHA-256 cryptographic hash for exact-match verification and a perceptual hash that survives compression, cropping, and format changes. These fingerprints are permanently recorded on Bitcoin via OpenTimestamps. The resulting proof file verifies forever, without any company or subscription.

Question 2

Can ProofSeal protect photos that already exist in my archive?

Accepted Answer

Yes. Unlike capture-time systems (C2PA, Truepic, Numbers Protocol), ProofSeal works retroactively on any existing photo or video — any era, any format. This is the key differentiator and the reason the window is closing as deepfakes become the statistical baseline.

Question 3

What happens if ProofSeal goes out of business?

Accepted Answer

Nothing changes. Every proof file is self-contained and verifiable using only free open-source tools and a connection to the Bitcoin network. No server, subscription, or company needs to exist for verification to work.

Question 4

How much does ProofSeal cost?

Accepted Answer

One-time pricing in euros: Starter €500 (10K photos), Professional €2,500 (250K), Enterprise €6,500 (1M), Archive custom pricing for 1M–100M+ at €0.50–€5 per 1,000. A free 100-photo pilot has no commitment.

Permanent cryptographic proof for photos, videos, and documents.

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