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 0xe6a928c4b6f722257aa8fd04888d55484e242df6fbdf8ba304495b765f49c5fa. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/271ae962-6dcc-4cf1-a73a-a490d6453201.json and https://artists.proofprofile.net/proofs/artist/271ae962-6dcc-4cf1-a73a-a490d6453201.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nkwa 2 (Original Motion Picture Soundtrack)
Nkwa (Original Motion Picture Soundtrack)
Giving up (From “Amaka, the Street Girl”)