Viking Skull are an English heavy metal band originally from Corby, Northamptonshire, England. Formed in 2002, the band currently features vocalist and guitarist Frank Regan, guitarists Dom Wallace an
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 0x35b7d161c91eaedb82ab3f464b5b5a72c8b5d82948faa485d56ccc5b73fb7dd0. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e22428a5-c80e-4700-9adb-dc075ae359ac.json and https://artists.proofprofile.net/proofs/artist/e22428a5-c80e-4700-9adb-dc075ae359ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).