Cultus Sanguine was an Italian black metal band, characterised by gloomy themes and soundscapes. Bio Cultus Sanguine was founded as a duo in 1993, but soon after expanded to a trio after adding a dru
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 0xe86f474a79ba3868ee3123a5344244c784c12571a67b8c36564f30deabe08e19. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eda3caa5-0fe1-4ba6-b69d-c461e5eaf647.json and https://artists.proofprofile.net/proofs/artist/eda3caa5-0fe1-4ba6-b69d-c461e5eaf647.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).