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 0x53ab3f90b31ee04699d8dce1da15172e489aedd35369005a160ae04fa9edb426. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb6c543a-9c64-4d92-a535-f8ff9781a381.json and https://artists.proofprofile.net/proofs/artist/eb6c543a-9c64-4d92-a535-f8ff9781a381.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 0xa8a342fa5c4767e61fa277adf751cc6bc20bfbdf7ccf65f24f81b29e30fd47f6. 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/JPN100300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd32ddaaff9aba3279cdd145ea0e610797a5ba0ce416fd71c1bd931df19be016. 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/JPN100200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4207e2ad0d9a4d5e05eb3c9e7584e7c70b244e9a3ab0156e6871f502e47266fd. 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/JPN100300491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0365b14f197d854da8716d5a364e623b838d0653778073206d86a81cbaee57d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPN100300493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0206001cea93d73e977e5f34119cb81d3915542f8cce2b9478a58adce404c3f4. 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/JPN100300494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c125645839c323cb191ff943afcfbfa493b60923b7f989782624ea81df6812. 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/JPN100300496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43acee842abac1df3bed3156627d2c8223537db3f1206413bf91fd1eb5c2945d. 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/JPN100300497.
ジェネレーションネクスト (SAKURAリミックス)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd268a5b12a5d39920ffed876cf3cb92af43ce53d71f8894ae3e448c8f2229442. 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/JPN100200386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc27365163b56ef924102400970b2ed4c94c118fd71184f4dcf951d7967383. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPP709500486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d652721750e07dc171e2afcbb0af34d9b591ed2ebe3e342ab7ca66008a2918. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPN100200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07906aa6fb8a6e49fe175f1ad1c23bff2ae70387d4c06b3104e58b7d6ec5423f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPN100200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca98b9773befdacb15f3fbdce43b0f4a2ebf2f7d21b85e10578471e33981c462. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPN100200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dc069cd0765b194b203ba878cdf17f2179fd408f230d1854224a8e5e6d0780. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPN100200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb97b41fd4ee708f45c36dfb4893823107411d4dd8baf17523c562f822fd738. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPN100200505.