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 0x00b68e1cb75f2fa92eae7e9574492a09bf4cb06e7702c008c7efea7cb667476f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22607114-1b67-4e15-9dfa-030d03f46275.json and https://artists.proofprofile.net/proofs/artist/22607114-1b67-4e15-9dfa-030d03f46275.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 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 0x35c82b25f40d0e3cc8911b44f73ca006d30818a744eb28d8563700aa43a04550. 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/BRJLS0900526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd868ec85c403de2df0e0389b2b3a23b2ffdae59cd003b2f27b0787f599837f9b. 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/BR10C1400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf454a7b44bf0ad6ac479934d92081b6c1de9c7cfbd579131457868cca1a5e057. 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/BR10C1400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c64960e442266c0fe94382837b31d7e7903fa621dd0ebf73f710e6712a52f68. 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/BR10C1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb879f0524ee6d7860529106a72e515ca039bc6733ad30e071c128d941fb0099d. 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/BR10C1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cebea4743bc3e6dff71914befd16ce5b17f70e10a11b4cee1ce240a8e3f29f. 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/BR10C1400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ec3b450f449aeba6aefdec7c1c32d3b327028a932529d692309336421faa97. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRX201727364.
Pot-Pourri: Parabéns Amor / Dois Passarinhos - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47de567784bb233fa36c75e9188467e93ba889366b8fbec052f4ffcf5b0154f8. 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/FRX201727365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd77d0a2b3a958248335a8af3571886486e6a4f8cb467fc16b61d6dbb5926f1. 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/FRX201727366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a048e8d797061c2e263bc010a324767d00027481aa35522931cc37f5c743a5e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX201727367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28337f108716d395cb8302ba53db0e5922972f7024ba2712f042fbea787b19cd. 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/FRX201727368.
Pot-Pourri: Vá pro Inferno Com Seu Amor / Canção de um Amor Distante - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ce923fdba932323d3a9e35f7801cc55b5e7f2620b4a245ceae72565496fcff. 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/FRX201727369.
Pot-Pourri: Do Outro Lado da Cidade / Tribunal do Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e50a93edc1d043eaf748ef22fd288518c90c8c261cb958ef77dc4f6849bc39. 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/FRX201727370.
Liguei Cedo pra Dizer Que Te Amo - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3be0becf8e101a87312a7d03fcf14d81a67974b243790bb18da8a1146a31dd. 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/FRX201727371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f17c633aa2e28e01dd9b3b62c3a948cfc14160a72441108be9476b759cb03d. 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/FRX201727372.
Pot-Pourri: Hoje Não Posso Ir / Vou Tomar um Pingão / Fuscão Preto - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0e80b6eb1e3a56f1521e34b4dc6db702741298d8df20895fab68cd23cae9a9. 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/FRX201727373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afdd2c99688db2f03cad6ee8ebce7ace3c80a2a8d6fbcfcf7944faa3ca2e2cc. 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/FRX201727374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad434c08d81958712c1e580f4318ceca006c406f68e392f74c70e0ad0f7c8d1e. 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/FRX201727375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0866d9a1f2b4a61e9496d91de2572fae24b1bf360d4cb9c0b8bf80e4b6ca8098. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX201727376.
Pot-Pourri: Meu Companheiro / Aprendiz - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58645119f14370c9938628038319e47a4ea5c0e61d7171e29524da70026815dd. 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/FRX201727377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47b5f889f1281b340b6bec08ee6c68636ced312b77de9c8877a32239f974516. 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/FRX201727378.
João Bosco & Vinicius E Seus Ídolos - Estrada De Chão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677c1a549560e7c60613630079c2f208aabc81844b144e8a5989db4b535a9a89. 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/BRKCP1500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1714d4ae749340e05cb890f6d526e9273470f251c06d69144bca439a99855e1c. 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/BRKCP1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7665e6c86e5db87426abb37c52930357a7e774cf96ce7641d39ef079edc318f. 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/BRKCP1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee4dee6895b0e9751074f80e2867b084b2c2c79c86a8e82c1d41c55d945f15. 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/BRKCP1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9cff1d0a4a9ba0d3fe7ccef310a35b5c40464bc2b2f2d10b2e2f2eba883ca0. 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/BRKCP1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67c17740ce2672a290aff91060fff0d52e8a73ac0ff2adaa5487a1ae6635ca7. 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/BRKCP1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c4e11c5e2bff341c9c55d50b38eb452a50025729ca09fc262dd95a08369fe. 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/BRKCP1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340d2bb7d79355836d705ca0e9990a8664e7ce94126a8819bc7b1de7375eb3bc. 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/BRKCP1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6091b51ab51eb440a4dfda305f836711d9c2ea032f318e05d787411d49eec9. 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/BRKCP1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a56ea884d36976bf04552b332a4186fd6b0bc7fb82b835167aafc0f74ca13. 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/BRKCP1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2858fe0833837d2dbbf62d77abf046fd181b448e4adedc64c34d08158135741a. 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/BRKCP1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda3e79ef4b420c36c4eb6ac06015a7a7e2e6b992d7cb87d5fd4febefc631ab0. 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/BRKCP1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aae1a63250f74b61e47d76ab18a37ed03e49b570d1f9307196c8cffee2de966. 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/BRKCP1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16503df0c06f401890a8cb615a729ef08e1e0f7b3623bd13acd2afc627bc0f4. 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/BRKCP1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1469f441a28ab35cdcad8e4b8fdbbb1f5bb86632e80d12f505113879ebc65e. 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/BRKCP1500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2252007e2a20d8a6ca3674350d71a846085088adb04878a0a3ff81d069e3fa. 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/BRKCP1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde5be8c4e8fb5a9dab7aec5fcb84cbdb34f46bba5b4352857f85f554b5db2c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US7VG1502542.