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 0x1b147b77d2cddd4bffc8a630c047081afe6aa52f60023f87e1be5ba5617f9ef5. 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/3d3eda78-4de4-4ab8-8ba8-fa649b51c4b4.json and https://artists.proofprofile.net/proofs/artist/3d3eda78-4de4-4ab8-8ba8-fa649b51c4b4.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 0x0fd86bd603878448013415ede65eb2e82d3cde610449734ec28663ef2e46f55a. 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/JPZ921514795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53143ed5c99b3aef8b277f957b728d93565b7332466691840cff18b7674aa50d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPPO01802578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947935b3746ae3df1319e36685ee8676ae7c4a80cce375b5c945b01ec9a32b07. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO01800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c37958920d488e3b368cccbebe99b4c15448e816246a65a9ecd98f1df2725. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPO01805478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a2fa1bdbea6bcc2535ee7bad1f3d60c3463ffa1450faa9c72dbbb3306a8e37. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPPO01800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a24bb782004d696e3d885c30bcfd988816f0136622aac77f0ed7224e7dbf6. 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/JPPO01904410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6772ffe6dc74bc9549c662ba54221df7fba405c07b83493fc5e1114665882f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPPO02004093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03a24bb782004d696e3d885c30bcfd988816f0136622aac77f0ed7224e7dbf6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPPO01904410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91383b34c3b0e5a77c4d4c0686d3a2cef6e2b7e392bf7a9a8e95a7eecd9a476. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPPO02001621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9e89b32653634a7d07aff2f670136a6723809abab58ea504987af17715f5fe. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPPO01902254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298c33639e6988719adebf424f709a3fa60f7abd7c8951ddf8e849d95108a7f9. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:42Z), 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/JPPO02204200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e480ac466aec66bcbd49352a8691ba46f7e8b8bd049cc3b4a03960a5577239. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:33:55Z), 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/JPPO02301097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a6199243830acb8e2194bfc73763359ef45f00ccd86dab70002db890ac3542. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPPO02301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75d99fb9b51a1693cb5ab7902883fb3239c282a8480bcb1044861ee4b27f11. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPPO02303446.
テレビ朝日系木曜ドラマ「六本木クラス」 (オリジナル・サウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee1014a05c8dd86b9cf0cda3b3e1857c19a7d4967eb46e519b09ad1291521f6. 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/JPPO02202607.