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 0x88252f65a29ddae1dc129b77691f940be719cf923f354c7ffe1bfa42a5f65177. 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/0b4f2254-5386-45c8-a10c-f6d2e5580399.json and https://artists.proofprofile.net/proofs/artist/0b4f2254-5386-45c8-a10c-f6d2e5580399.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x63e6ebee3f5c184273712c17804d203babb27d7c39460378ac46c68690f6b443. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPN292219594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddadc810c997ad461e57aba0ca9f4be54ca0a6dbf51d7f7539bd23e21ffa738. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPN292219595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dbdee27b638288a5414248742e04fb3a46507ece6f08d70c181bb23fae7116. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb3caac2fc03e572f9e7fb248acca2ab14a3c977201b9887b69f102eb5f2f51. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3560ae98c419c6ad9fb7ef643d9047932ab7acaf47706c5d59545f94d463d2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa881c8fd17b65dc071e1644db1b5660956a6ef18efee866f71857624d1031798. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPN292219599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b27aae3b3736cc4d8320be954a763da5320eae0c3ff8f36d340aa0692b7771. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPN292219600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4520314ca15b354f0872637c20b35fbcaa4209881fa6b39c86671a056f9ba604. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPN292219601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc035fea4e0d9b591c61453c54ce1fb741503c96d780895bdf1e0d8f8dc10212e. 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/JPN292219603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e501bc1e469bafeeb8c05a40f36469694b31cac8bbb79b19d64a9fe4cf4283e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63edcf9e69ba64274e829ccf500e0363bc7dcbbe89770a9ac4a207eb656a80d3. 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/JPN292219605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368134fd9799592dd35f58b4639a87320e155b7ca59e1762dca772ca2faeaf06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbcf379b14b77c79f6f5c3582334f0dfa2e0209c80605a761b905c16039b77b. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/JPN292219607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ccbad518a8f334eec242317c8088eb51f0743b635927baf1d49db81a01256. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec29e04e9b4dda1012be9a4cdfd3d8a5e881d68786408340c21e427ddfc40af. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/JPN292219609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee9df78b801e8137b586fc207d7d4d715aee3c8c682daf1ee7c877cf4635e9. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPN292219610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753ecc52b91ae906720d212d8f9df2e39de75ef7e5ebbc416dcff3286b1ca3e2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPN292219611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7455646f4d1121214a7eb3fefb25939aef6c9456bfb4283b0ed2b8b76bbd201. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/JPN292219612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5294107385e1d84aaeeb2bb939c95c5bae04a2a46d6754940e88372bb13de13. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPN292219613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb94fec51925229705d207310212db7dc617660a257e36286c3ff418724d1cfd. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/JPN292219614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608ab9377061abcbbe2ed7e4233f849328e65a9a33719ac3dc09e08533727766. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPN292219615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cd3e96fc9e70658d3e6df09f8e69b2ccfa0fa806af35089b8a21bc0404e194. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/JPN292219616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c612dd52bc9b1bd9db34b5e3868cace659fbd0ee405e854acaad774a38faa6c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/JPN292219617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a244ecc186a21a4049ddd09ae379532b2585607ed4a58e2d6ebeebd622f9e8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPN292219618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aadf76eb27939d70c4ac474ce9126b1342287e171b9a5256ea1f48551532d2e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPN292219619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9fb3807e11873bca18ef73ea420b6564ed62d3d585b0361ff5b93eec6ead5f. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/JPN292219620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f267b9553bdce6c34cf77438510121c5cd558623e367565d7084ccf6392bb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPN292219621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f0dced07c5aa7fa105c8ac6cd488c5123cffef1608500ed8b22fc6fe0454b. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/JPN292219622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc125ce2683c828cc721f871df6d9b65efb863c9c9ffc6bc5e12d30b1bc739aab. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPN292219623.
Chill Coffee Jazz: Sweet and Warm Relaxing with Cafe Au Lait
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