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 0xa78925f03f05195e28bba3014c1c76b58bdd3fe3f76679d0bcad8db9d228d82c. 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/8ec7ee6a-d1b4-496e-b2b0-28e4adc350c5.json and https://artists.proofprofile.net/proofs/artist/8ec7ee6a-d1b4-496e-b2b0-28e4adc350c5.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 0x143d31f4cd352a3b231d832f4c22a949b0ac591d6b4db1d991a9ca0059234d1e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US7VG1977766.
Pressentimento / Melhor Eu Ir / Liberdade Provisória
Talismã / Espaçosa Demais / Atrasadinha / Sorte Que Cê Beija Bem
Me Escolha de Vez - Alguma Coisa Me Diz - Flores Que Plantei - Cds & Livros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cc65e5167b4308091a678900a377f1f30ae60d584bcd8ce2acdf8988291ee8. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZGLS2170171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c749d254387dc0b2e2867a7f8419148445a5e30e91601c529cd4b2fa09480e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZGLS2170170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0670dd08c09c09e2babf81db9ae094fe8720b19de17aed0f4b3fd17f7699dad. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGLS2170174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d687ddd936e0d8d18ecca5825895e422ce4f49944e1e216f4ab0a99a2ba5a75. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJY2111207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55c7b59f752ed06995c2f3ddb2c49e92ab8d42a451a04fa381b3e358d64c303. 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/QZGLS2206909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bdd4c6d9bcc945e167ae5459a172c3a8e0511bbb5d0165b0893984daf9b589. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZMZ92322008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a77c9faa42169fec7b0519d394c99a725dc2c67848546d42b971a174ee82119. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZNJV2313709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142b789e0f187d967320e433305fdecd10f44e4b894eca194685346b46d97440. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZW9L2399391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb32c083c0627cf2bd532e7b8ddc2900647222f5ae1187c3a21733bc32f8a35. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZW9L2399392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b6c14f5218033366d5cf917ca668a508c42dccf68aec50e79b5c7f1b0dfcb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZW9L2399393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151058c868798bd5fd41db339f86f70cac8887a397d8b7f61b0909d131307c20. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZW9L2399394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf9cf9ef084d8aca3905e90efccd81a5984e1dcdfd17d62a1d370116ab29102. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZW9L2399395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620b15a5955e14aa573540c6cc54cb864f707bfdea2299734704b13f4578ece8. 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/QZNJY2477287.