Damno ()Ortsnamenverzeichnis der Ortschaften jenseits von Oder und Neiße by M. Kaemmerer is a village in the administrative district of Gmina Damnica, within Słupsk County, Pomeranian Voivodeship, i
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 0x5aec9e0373a21e54782ba85d08ddd0d507dae16b91879b7e58021d5b20e1d5f9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70016f3b-260e-4720-a206-d778ef2eb9af.json and https://artists.proofprofile.net/proofs/artist/70016f3b-260e-4720-a206-d778ef2eb9af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).