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 0xb16955b44a59f28a06032ed4b29d78c988455033f119464ae0a4856a9e9aff15. 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/52fb1717-268e-4404-afd7-13a9c60d829e.json and https://artists.proofprofile.net/proofs/artist/52fb1717-268e-4404-afd7-13a9c60d829e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Main Theme (From "Final Fantasy VII Remake")
Stickerbush Symphony (From "Donkey Kong Country 2")
At the Bottom of Night (From "Chrono Trigger")
Driftveil City (From "Pokémon Black & White")
Twilight of the Gods (From “Fire Emblem Echoes: Shadows of Valentia”)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bf7e72fae810f1cb0fab2e242844de91ba99941d84175b070f3712c5a9b812. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGWX2111046.
Melodies of Life (From "Final Fantasy IX") [Cover]
The Sky (From "The Legend of Zelda: Skyward Sword") [Cover]
Peaceful Hike (Qingce Daytime) (From "Genshin Impact") [Cover]
Somewhere to Belong (From "Fire Emblem: Three Houses")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3faed81833808c2a437fa2e05f0c58a5b13a3f0e98c2d6b3107c7e102f7ce3. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:56Z), 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/QZPJ32121622.
National Park (From "Pokémon Gold and SIlver") [Cover]
Vast Poni Canyon (From "Pokémon Sun & Moon")
No Promises to Keep (From "Final Fantasy VII Rebirth")
Aerith's Theme - Home Again (From "Final Fantasy VII Remake")
Phantom Liberty - french version (from Cyberpunk 2077)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6585fe12212df88cdbd4d1204df74ebcf2b77d5247501159d4185027b3a6c7c0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZPJ32435928.
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.
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