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 0xa7251670e518dc78293c17118e3c9c84aa515255962cc6057256ded189c0a4ad. 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/c3484f8b-32d8-4b9d-800d-21c33fa723fa.json and https://artists.proofprofile.net/proofs/artist/c3484f8b-32d8-4b9d-800d-21c33fa723fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x5d5a6cb35d5655adddccadeeabc419577f969be705527d48615bc39ac6e35177. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAGR2226775.
The Raising Fighting Spirit (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e10eec4956f7d09f131b31b04b06e22a6f8979147bc6f2e175f90129dfe3924. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCAGR2297589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2d146fae1188161d4dab3524bb100390f05ed8b5e2947b0687101695801dde. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGS2216900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f1a2847ca8f1ffe6ed399360b618d1d3ada7f3317ab3d64519b805b8b5f85. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCAGS2216906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc6ecc9440410e1709f447e7b5618b8d5b66d6c3aae9a44de3f6f350e2b8502. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/TCAGS2216995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1336f23c196be5227f2f40d4c3adc1112658eee75ca77412c5084a5cd54fcf. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/TCAGS2217082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe656225e84f5e2f0eadb7b10f7c694d9b7dc786a97c11cdd754d5274af103b64. 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/TCAGS2217085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a1e63d36e7336c1619b96d43302003f153cf405dd4a8a152b2e809b0dc3eaf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAGS2217086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba230d718cdbec2f008df5b7a7983719a9fbc68b32aca10fc61e0e49050c2a1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAGS2223215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e60eaf45b0ebb07725475e08e46724abb461cef3a08c8318477690ab3c35ed7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAGS2225177.
Bowser's Castle - Mario Kart Super Circuit (Extended Version)
The Legend of Zelda: Ocarina of Time, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf558d6c99e1b28f04c6e6aa13a802470092a632cded784e9f57d32eb59d2fbbb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGT2360103.
Sweet Anime Song (Original Motion Picture Soundtrack), Vol. 4
Tarm Ruins (From "Zelda - Oracle of Seasons")
The Final Antasma Battle (From "Mario & Luigi - Dream Team")
Captain Toad Goes Forth (From "Super Mario 3D World")
Mysterious Adventure (From "Dragon Ball")
Sunshine Seaside (From "Super Mario 3D World")
Attack of the Airships (From "Super Mario Galaxy")