Somin () is a village in the administrative district of Gmina Nowogródek Pomorski, within Myślibórz County, West Pomeranian Voivodeship, in north-western Poland. It lies approximately south of Nowog
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d38f4e696538947bfa7919bc70cd4d211f0c008bde80037d88450a5792e221. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2b94b27-d14b-4510-b8fb-cd9985289348.json and https://artists.proofprofile.net/proofs/artist/f2b94b27-d14b-4510-b8fb-cd9985289348.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).