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 0xf485aa2b53e846b95e27997d42a420ce408d602f9d2037a35f760a9925d0a295. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a37e5b1-42cd-428b-b824-8d2c5dd1e8c1.json and https://artists.proofprofile.net/proofs/artist/7a37e5b1-42cd-428b-b824-8d2c5dd1e8c1.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 0xf8ca85ff462d41884780b60647d062bffcfb31714a7d0a3fb6a246f01e68ebdc. 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/JPB622200560.
野望なき野郎どもへ - feat.TOSHI-LOW [2025 Remaster]
NO BORDER HITS 2025→2001 ～ベスト・オブ・東京スカパラダイスオーケストラ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018737687e9b06a0579951e026815b2da35fa95f35541237b4e3c252c73d0124. 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/JPB601800774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7747085c8bb4e513a85329a65df2c9ceb35676c7358e732555582ce101cd67e3. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/JPKS00201064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ca85ff462d41884780b60647d062bffcfb31714a7d0a3fb6a246f01e68ebdc. 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/JPB622200560.
野望なき野郎どもへ - feat.TOSHI-LOW [2020 Remaster]
TOKYO SKA TREASURES〜ベスト・オブ・東京スカパラダイスオーケストラ〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4cc9fa5af92f883c6b06e6b8e9ea5021cf8ae8ba83dd84559e0663be839b1d. 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/JPB602000627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf3d10f914f76bd5dc9e502f6d3052ffc9e52d71e793851d4b95b9c9f2527b. 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/JPU902205405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cf3d10f914f76bd5dc9e502f6d3052ffc9e52d71e793851d4b95b9c9f2527b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPU902205405.
IT’S OKAY - THE GOODFELLAZ REMIX by TSUTCHIE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9f689795fcd20969888f9f6f41b33f658eecedbe910b93e0453172cdbbfbae. 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/JPPO02102233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8047831fbee2dd255ebba61c6d0300420b682f4be787ac24f6a6895a2b83cc. 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/JPB602500357.