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 0xe62a6c40cab2f76a06e1bbfbd2a126a1d48d06c1e80ce1ca1188631af0df9399. 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/b8feec29-9b1f-44b2-99ab-ad9fd52ecf4b.json and https://artists.proofprofile.net/proofs/artist/b8feec29-9b1f-44b2-99ab-ad9fd52ecf4b.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 0x5d6ed15068c61e1c908603a56a7f46fb698242d070407e8fdd00a69ff5bc4996. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKACT1864281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822ccd56e255c7c91cecd045166f01d87d879cd7da9a1bb444db3de4a0a9077b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DESH41900446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72da50f671df2ba7e252b53a10ac8e55434626e6c8b287f7d9db40571e2f1f8e. 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/DESH42000165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a35c609d401adf868587734917883dc694aac38de7a99b69615f9d31dfb3377. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/DESH42000167.
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 0x8b5d7d184238b211ddd5efc513468607c3a6ae710c06f581dd4985a2bff3ab1f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DESH42000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbc3c7a537874ce36ccc2fc53f8135df7044adebe8e2652f7979b889b30e67d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:32:52Z), 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/DEY472173393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d5b00a041fa102a9f92fc0b6b3798371218dfd7b3c1e3149593954067617ab. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/UKU932230748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b453784942236f34bc467189db5f438c6072a1180c53f9ada95097b71ea3286. 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/UKU932231143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7494d635b62a624f61be82b60c8cc5ad69fe591dd24e92e7e014de30f7df95. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEG932202701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e1a48f1ce396b06587fb51be6ba29e7e881e4bc98345d29307be3621196b99. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/UKACT2371075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdb69f1e9849ec41f4307fcc841cd36ab6385a750062095a5d5f8445a47fedd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKACT2371864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd39fef50248a261ae9d055e1e4284935d317ebd7790c979a8f952a5b7a3b611. 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/US83Z2327935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828bdf2c7acee6912ce0421abdb4454a194cf40d1be0935efa15ab539cabb7f9. 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/DESH42300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca8b469446bf4eba6c9a857f933baf4abaf2b76a3f00ca53e83b1fccdcf7fec. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKU932300413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d88b145164e8acaf6c8ad616a693a27dbb1ff5eef18c151ac927ad5f9e3b51c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DESH42400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71df8ff4d7a3473defe49e4649e0e72e64d8a61a0c97c310d33eedadf2da786. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKU932401537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455167f3f50f3f699f485130965e79deb3f27c537bc83f81b74dd842696a284f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKU932503049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4260cfcd498aefc4d1aa46fc1f081ff8cefb1c4faf59ad2043a2e8c1a1f19. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/UKU932503139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62507090c96fd265a44f28e080be2d7f22e7c1ccc2fe85a8c1d2337677f5771e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/UKU932503306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf044bb020348ad8458294e92e998bff0956541fa1e1230d04208abe252af7. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/UKU932503540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74839dabe99e4514b01d1be5eeb7b25aa3021bf21406f4989718796725819d6d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHM81600891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e965079d0da529fa82884c07892604663b34f04b0bab260245acfc6000f4577. 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/DEY471811411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2805c0603568bf802dcb6f59102e1e34ce524fd1296aea37b5953d5e172358f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEBW21800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e24e8f4cfb10922909e64f5c945e32db426901fd19d47f6435c19f2c03e1f9. 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/DEY471812413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469895f8ff3cbb044ac97d49def1f92185304e46f337066cc9f600ae662e661a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEBW21800036.
Bar 25 Music Presents: Bordel Des Arts, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46edb616df6137575bdf84b93fbc6e645a21e0fe5ddd43a7cd6c9823f0cf3656. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEHM81800515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480f1e19bcc1a494595f623275c8150dd8070d2988a4db25904488e8de2c5fb5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBKQU1821429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9158b41e275e91687ff00a6462dac18f6fa578d0167eb56ef9c10940d0530212. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEY471812412.