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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba7ead6150d6fbc30d4933a96167e138c35199233f88aca4c02de30a0a92ef1. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c9a5f5b-7124-474e-bb79-454f3f992a5b.json and https://artists.proofprofile.net/proofs/artist/7c9a5f5b-7124-474e-bb79-454f3f992a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rutela's Theme/Lake Hylia (From "The Legend of Zelda: Twilight Princess")
Therion, The Thief (From "Octopath Traveler")
Faron Woods (From "The Legend of Zelda: Twilight Princess")
Dusty Dune Galaxy (From "Super Mario Galaxy")
Shiveria Town (From "Super Mario Odyssey")
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf18dc2e5f71abdd4298e233abe246746a93280c65b40daaf46c50cd620da39d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2118652.
Valak Mountain (From "Xenoblade Chronicles")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c8f82d3e5854164731f5734b32b30ac98e6a37a7e11302c96dd2ad1879b15. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2080654.
Waltz of the Boos (From "Super Mario Galaxy")
Hyrule Field Theme (From "The Legend of Zelda: Ocarina of Time") [Woodwind Quintet Version]
Field of Hopes and Dreams (from "Deltarune")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1bfec83e7e1456199fc9b36a345015d3d39ea5de722d5e1449bfd3eb5f75b3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32230562.
Between Earth and Sky (Music from "Chrono Trigger")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f554a59e48e701f47e7ff1e1ba36a838cf754c017ae7f2260c919fd006003a6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ6K41900353.
Death Egg Robot (from "Sonic the Hedgehog 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1f707252b4dccc83a41347acd04bc39e7b9fb62c7d79d980fe37af8526bc25. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32447670.