1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e3026f85a581a2356766e2db86de0680b976f8165807e42ba80a257095eb9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/76c0cf72-9584-4b31-b111-d52f0c35921e.json and https://artists.proofprofile.net/proofs/artist/76c0cf72-9584-4b31-b111-d52f0c35921e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
DJUNGLE (feat. Marracash, Taxi B & Paky)