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 0xdd7808ce0837a5e6f79e2941293b065606c63b277ca911fc171b9db63fb9af60. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f58dc2a-562b-4c27-a38a-151f0a7e7c61.json and https://artists.proofprofile.net/proofs/artist/2f58dc2a-562b-4c27-a38a-151f0a7e7c61.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 0x655c7c5fb7b9e64c49ba70f916079fd8dc6b04d009c26c325a3bba55476c25de. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1902789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b22cbe23e7a62e9072d45a0b9eb6c1f3524502f2943e08c4fdfa9a7773303. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG1902790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c67073dd26798dfab6d0df4e96ccc20b56bca1b15e88edc4bd3066359a65e49. 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/US7VG1902791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef1d7ce68c8a846a29ad9acae0c0a4432bcfa9e3658cc144ec71ccc63ca6a7. 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/US7VG1904881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a7f3b32bb5902862d32a3247c548db165cc90d940c8278e697abf07197b9b2. 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/US7VG1902794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45abcba781f4c5be0bd19cf83657bbe6860d937221b08ad2a7d06e6383794736. 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/US7VG1902795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823b21aa4685d36056b2512aaa578bdb6886593a4ced27b898d67409cb5c2feb. 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/US7VG1902796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf26f521c2b81b59483e712d9a5d0bab2469623e54c0de45aef693ff95e6cecd. 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/US7VG1902799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68648c26804df0cddd0cb1e173d8dc66e234807b4cdb334cfee7e73a4d1e06e4. 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/US7VG1902788.
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 0x8964e3d53fb7b0c9f21454d15b66024867224dc5e5c899a8e6ffd4269abf0147. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US7VG1902797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa653fec29a3d239fa809aea7e17bbff8f2773590b425a263ab23f78b344ad82f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US7VG1902798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02e7178bc08cd179f972b8e6c6e22fcd81aac7cfd04aee23ac74b01689ed988. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US7VG1902800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12727203c717cec4e6ed02f304cb132ddf56be49b0255fc6aba0d6bdb557303e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5AB2481418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fae48305f8e078843a8289f4c4968f378d890e7a378a050797dc5a2a407ea52. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:01:20Z), 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/QZ5AB2481419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ac9804e420ae87ffe187ae471095bf990c8150d244a9d8f07ca82594236d1. 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/QZ5AB2481420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdd39570f169bbc2fe1ffd50f78024156cada67cdeb48bbdb81f9422ed649be. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ5AB2481421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc992d301decd946c955f60c8ea2cbdb55d3fa90c6341f99aa874f86129a3a7. 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/QZ5AB2481422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d47fad3478e1affc288c2c058d9fc691e88ba4d0159098ce15df345483de532. 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/QZ5AB2481424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9b5cdf33af26808ae16b480a2b8f39bb92b3081c4a76dbd9f3642f0869a2b5. 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/QZ5AB2481426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621d45420906bf466a66ff90158f3faac8cd2f0eb9e5b0798cd83a351ff10368. 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/QZ5AB2481427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc990dd278c7de5ccb43d648c3fbeb07a55eb0f4f5e15c2975b7cbd71c3c000d5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB2481430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76d766fdc47d245c93a81a8db5e5e03fbdf0c276cacf8e0f26e13c3faae5b55. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZ5AB2481423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4dd7d72ad010633253c28e5fa0cf2171268e2407f19097975fe1a1d0623c8c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZ5AB2481425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff77577b7af52628c46f74d8b69ac3a65aab02a400d105bea748495f241d9846. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZ5AB2481429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ba6958570e3e7e422f4921c31ba689cbc75c3988d02f82898623c669d81e80. 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/QZ5AB2481431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcd0c5644902205408414d2d517782ec8a424b6b44bb400aaa0865b1d074a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG1931984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3835ecbcc97eaf076aff5d4196d8bb2d047356784c6ea658a3571436165c84. 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/US7VG1931990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c1c6144e3a77113fac290e629918ea51ed977c98c28654706b80a39874146f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US7VG1931971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde504f16a31c7821a2b96066f5816dcd54a04b388794a4202ead13e3d9d87dfb. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/US7VG1931972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667cbf55bc5ad8966c566153adc61242a695e62792942b8e3dd00857879b1745. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US7VG1931982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0194ddd4bc883f39acc762875b1c7c82086387bc4b543bae9c8bc814dbdc3f73. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US7VG1931986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb583f9318aa83dffc9c8de6b8a0bde76b0b3facda577bc3bdd9b14877c75903. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG1931346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ebd9676155c77be296c5d922d6b7972bfaeeba1ab9c40ed8494c3b3e5e8a4b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US7VG1931356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f2961e9bbdd52c3e6d44dadf5b1eddcbb4b82cc4e5c8be7ac8c5ba4049f4c. 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/US7VG1931351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d1bb3005c7982562149cd477e39302a1a1361cf0e6bce71e7356b5f1ab2147. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRUSA1701959.
Apresenta: As Melhores de seus Programas Cultura FM 93,7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4313b709f88b899a96fe3dfd1b4c3fc6eb36b4e45f33c425b26f30d0192f267. 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/BRUSA2323860.