Markus Dravs is a British music producer, songwriter, programmer, engineer and mixer. His credits include Arcade Fire, Coldplay, Wolf Alice, Björk, Brian Eno, Sheep on Drugs, Merz, Mumford & Sons, Hoz
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 0x6e164222cdac03bcfd72be73d83d1929f68e6ef8dca5da9594c2a9bdc6532428. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc10c439-c4a7-47d5-978f-dff96fa2ccc4.json and https://artists.proofprofile.net/proofs/artist/bc10c439-c4a7-47d5-978f-dff96fa2ccc4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).