Bloodthorn was a Norwegian black metal band from Trondheim. History Bloodthorn was founded in 1992. Their album Under The Reign Of Terror (2001) saw the band abandoning the female vocals (by Christin
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 0x348f75bae4d72a52660f05dcd1a9508977419a777931def3f93c40a64db898ef. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a43f8675-9528-4e92-bd67-13cf97cd61ba.json and https://artists.proofprofile.net/proofs/artist/a43f8675-9528-4e92-bd67-13cf97cd61ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).