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 0x1bbb4ce6954b953cebc4140232914b7f74ff366464259f821b4626577a9e15c9. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb9d75bc-339c-4def-b6a1-6bde5fcc81d7.json and https://artists.proofprofile.net/proofs/artist/cb9d75bc-339c-4def-b6a1-6bde5fcc81d7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981544c0a9e44af00711682b224e853074001c9d46e8d6c1f888550c8f2ebafb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:53Z), 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/USE831528372.
It's Raining Somewhere Else (Undertale) [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1235abe301e855d0b5c8ee389b99952cee07a0e46050589827a266756ad6e8d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USE831528400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe32ac14f2e45f613c3254682d6c4ed7cd474d578293c3de5be50978ff15368. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USE831528407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e245cbf071d35a3e8a4c40b52ce4ceff6d513f6d9e670dd488b1511252330. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USE831531686.
Mimiga Town (Cave Story) [Piano Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f76808051274817472c6e2169c47ebc958416ca0f7ba019d55a5028e103ea34. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USE831531704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbf578a766d47c43b9a2ca1fb9b93e9e08af891d14f8214c8c669bedc2683d5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USE831531714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e6afe55d3b39f8307ac78308b4e043718d9247384cc3e1e3e44045f0104b77. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USE831531696.
Legend of Mana Orchestra Tribute, Vol. 3
Kingdom Hearts Orchestra Tribute, Vol. 2
Kingdom Hearts Orchestra Tribute, Vol. 1