Damanhur ( , ) is a city in Lower Egypt, and the capital of the Beheira Governorate. It is located northwest of Cairo, and E.S.E. of Alexandria, in the middle of the western Nile Delta. Damanhur is
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe820699f4cfb8fe55533bc468a93a48ea17e99b09c14e00ef47546de8433f8e. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03587b46-230d-4ad7-8a06-0de1b6666ec4.json and https://artists.proofprofile.net/proofs/artist/03587b46-230d-4ad7-8a06-0de1b6666ec4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music of the Plants (Musica Delle Piante)