MC-Hár (Hár means Hair in Faroese) is a rap-band from the Faroe Islands. They were the first Faroese rap-band and the first band to sing rap in Faroese. Since the first time MC-Hár went on stage in Fe
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 0x043d4b6da5285b69fa182e1fd82b3d9894ef42865bc75ea4b0116d510cba54ac. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb92ea66-3abd-4cda-8e75-ae3d5471a1a7.json and https://artists.proofprofile.net/proofs/artist/bb92ea66-3abd-4cda-8e75-ae3d5471a1a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).