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 0x5587a011396772d9fc394590624cd0f04f9664467ddc6c69e82a6f4b0273cac1. 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/291d9fa9-1e2a-4d90-b8d6-4b96ed8db57e.json and https://artists.proofprofile.net/proofs/artist/291d9fa9-1e2a-4d90-b8d6-4b96ed8db57e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Otamatone & Kazoo Songs, Vol.1 by Otamazoo
Anthems of the World Played on a Otamatone & Kazoo, Vol.1 by Otamazoo
Anthems of the World Played on a Otamatone & Kazoo, Vol. 2 by Otamazoo
The Legend of Zelda: Ocarina of Time (Otamatone & Kazoo Covers, Vol. 1)
Anthems of the World Played on a Otamatone & Kazoo, Vol. 3 by Otamazoo
Anthems of the World Played on a Otamatone & Kazoo, Vol. 4 by Otamazoo
Anthems of the World Played on a Otamatone & Kazoo, Vol. 5 by Otamazoo