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 0xf124076fd33f54c62b37da16e5cc2b18521ce8bc9d8e38dc2cbf55259a8154fc. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8148ca90-420d-485f-9c85-b62a559507a7.json and https://artists.proofprofile.net/proofs/artist/8148ca90-420d-485f-9c85-b62a559507a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
K2 Massive Hip Hop Series: After Party Chill
80's Retro Synths, Vol. 3: Electric Dreams