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 0x91aba0f93a0767486300d10efc6ed116d12db5a4940793989f3219710d11e977. 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/1fa2abef-defe-43f9-bd03-abc3f20feaec.json and https://artists.proofprofile.net/proofs/artist/1fa2abef-defe-43f9-bd03-abc3f20feaec.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 0x27a1c0641fb9d632d9dd994f15e63c7ba9fa70bc0d97daed3f11a5caf92c05fd. 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/QM3DF2210912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3847b4779df273254eb261de2a30eec8a093bbcd5daebfc80ab7011cda9a93f0. 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/BCFUT2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec4e3239f64473e2b0d14559c325c4c224c2b2cded1aa26f68625d5483c22c0. 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/USANG2243828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8e02a27d23b71550ff80ed8ad861ebabe2007c20d33aede99dfef6331befcc. 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/QM3DF2147936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c659d8213492d3c5001121269a21200400296d5e4f1432ca525e60d4ed43ab. 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/GB8KE2311721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00cb1e2ba3a0431211436d0c6712d19347da982b3bb32722ec0b19470aa9f15. 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/GB8KE2311722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca3756834575725263ecb19e3b7e8bbe0bce956bd24d84ccb59e6d266bf6ebd. 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/GB8KE2311723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1e08966d1efc0a50801a938a26fe37496ea398a38fd03dc6fa46a9f2fa3790e. 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/QZK6Q2360479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab2e599cd3ab69d187328b411ac89866d169b101b20c2773aee9728e38c64a. 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/BRSME2400249.
Tradição Familiar - Eu Passo o Pau na Cara Dela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651480eee2d56f628d84e7d8b90d15dac47018477bc00907e0d19151ad45071. 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/BCIH82208348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b24a1ece9c17ea7e86f9af3b55f70e2bf6a1821daad9b0ed0fea26993ab7aa. 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/US3DF2499739.
Beat Trava Pulmão (Super Slowed + Reverb)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671802dc76513bbd3885764b459f005241aa917b3d41aa91c7217c64b05911df. 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/US3DF2499747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b1a4cb5a694bcc1b25c3f08b58f825f6064b4277281f6e2fbc0440ee5a0cd8. 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/BKSAI2300152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c74a82403b6172ad8b0975e89fe34d187b7c07fa1373da084c451e500c2009. 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/ESA112440174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83f8ed0c633d008b1fc792a08e9e3396092704f6b879d695e9599df85b97dbb. 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/QZNJY2323959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ca7302dc1d43d5dd0a1a2a395efadff474d413fec0d8d607b21f131044b80. 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/BKFGT2400128.
Já Te Falei Que Minha Mãe Parece Sua Sogra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832c1829c399685e7df81f667cb9c5bc37979f108be4e5daa6df666db9ea853. 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/ESA112452443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c69b76f3eb96f15a7629508d4d44b1866bbdec4e8d791427e446dfede6838f. 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/ESA112436931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be575f5e136857a2f1309fa1a51c32efd65dc83d584d6f9cc923e67c996b499. 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/BKAEK2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bca84bd256fc4aaa592374d5ce94967d689e425ca6e7d075e0391ccbe9f5d5. 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/BCVK92500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e83bc80e13a34fd2e9e3fcd89eac87879972b8a8c713935a0857d56f9c16d4c. 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/BCIH82201570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcb1635faa08da847f36667fc8451f2c5a61592b9bf5de0d6c60f35c179b5d0. 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/CA5KR2351689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3022334584d7e55a61ee084c3163225e63c800413f6f4134d2454dabe168ebfc. 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/BCA6L2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7f295b8ddaab64b1c9082fb724a758b2ba2a7c7be0b771a7c82a09d4794e1a. 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/BKSAI2400125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d1010c308cb5c2ea4ecfc59b166229d3c63a9d974ec1f1a7ff804661bc47f9. 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/QMFMG2367753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef06a62e9ca8a1dece173c1c0af9576b92b7da14a727dc904f436bebbf10f143. 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/BKSAI2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01171bf0b7a66ff747b0c7bff73ab84bde00f6dbbc9a756b5f1e8eba6be7d65d. 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/BKDFK2400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111bac15a5edf215e0b37440426bd1d350858062983cc0d405faf5d787ebbc7a. 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/QMFMG2367733.