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 0xddb72c8c817effb675bab6e25967135d6de8c6b6cebdc94deaa201e533b26715. 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/bd198e45-5684-42a8-86c4-74b6f4222d31.json and https://artists.proofprofile.net/proofs/artist/bd198e45-5684-42a8-86c4-74b6f4222d31.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
FINAL FANTASY XIII-2 Original Soundtrack
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 0xbc18d23a9684da0837a141866b4c657a4e387737cf3b8fa1235f6e1aee3022e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPA841100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844637379d66041247b9a2a12e8e97bb7ed42e9c23a848c1c5fb709c767b4cff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPA841100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb227a631c20902701b809d5c7d1de7184147cc766edc8488c4fee7167f76662. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPA841100503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0c4dad35ceb88e2a9c5f06b5c35900d48fcd5bf44aed67aca1ade13ff6afa1. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPA841100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cab078e710daafb6e4a0deb349161e239053253b69e84cf570f075b7aaab7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPA841100515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f69919db13d0e0b5471f2ce4bd43a4cfc82cde806740c3083dad139d3d2df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPA841100516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e43ab56c9cca74b44796b2d39906fb3fde7f75c0877ca311b1e1665eb061b8c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPA841100517.
Lightning Returns - Special Trailer Ver.
LIGHTNING RETURNS:FINAL FANTASY XIII Original Soundtrack PLUS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7cdf6fdf80a3e4b7a9ecb88ba6527e1549135cdfc6f91d4dabc0302e34ffc0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPA841400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd1ddfcb0a52ae02f1e9945a8b49c0d391982de534533aadd4c44f5b4e4ed51. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/JPA841400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f191f9889859a13edba00340ff05939d5fe8c1add58bff537cb1400cbb084c2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPA841400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc492d16fae606665da74ff2879d38f7b91e5170a0e4b640c90b8011e30deaa44. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPA841400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30adadc9a8a99c1b9dad6b1b5b24287fab1ba89607be02a0390f7c8c97c09863. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPA841400053.