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 0xe2f0099ba33194ea07fc723fe3e2ee1eb2c8c667ba052d116bcca9c1e5ab1061. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a1a7bb8-820d-40ac-b212-ab563e660a2b.json and https://artists.proofprofile.net/proofs/artist/9a1a7bb8-820d-40ac-b212-ab563e660a2b.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 0x40fae0b193905f626cd99bcad22dacac39faaca0c019f220d46b27102966f4ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:19:42Z), 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/US7VG2111815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73b033fe431a029c1da92fddc27ac38837501c2f749f79466d0c266f99cb7c3. 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/US7VG2111817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ebf01b0cc92f6b5f1f1c7d80326dea13b06589a0b08154aa191e23782a9a7e. 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/US7VG2111826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574eb52384e844abf8be3f75ec39f50061b5937e202d6dfc811119f7bb4fab8c. 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/US7VG2111827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20622d03251f222f5cc33d4f94e36247b4726252e9a59a72c289af5806fec2bb. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/US7VG2111820.
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 0x95c21f0d631242c92d22dae1a8fe7c8d76f1f95a819bdd89c04368638133149e. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US7VG2111821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c82e907a97389c93d62bcbb9a94fdb436eaa6a70fbbdcb795962d6d19f92666. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/US7VG2111818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a619e8fb63dd2f2ce98104d8dc5065fad529f514813855688cc2ce2acaa7d6. 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/US7VG2111816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bdd4de28e4deaa2d47b5a99f572b89d693ace1f146164ddb65d98427a027f0. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US7VG2111822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8874f2d18a5a8d575ce4dde1ff4c7198a25ab941933a24d1feab7c80e6511944. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US7VG2111823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194c235e6cb6dd8252e5ac636c9c42ef2fe2a15494b826c09d7c22b460cd580. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US7VG2111825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f8391cd8bff3c10b8e21a198718c5c08d38a12e3c148d59837981f0279deb4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US7VG2111819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7d67a2c53c44ef23a3d98f99fe49193c5ab47dfb57d1a6b9fda2d8f4cd416. 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/US7VG2111824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798f1f601c1a6d79651c7d64dfa70f43ba2d4e3eb82723c595de19bf2052bab8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZGLS2033245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3a5c8e3605c09a037332126fd96eefb19b9769079013312daab4d44201856. 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/QZGLS2033246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3e9181018931cdd222d00b0bf4b4656682f3533e955834cfc8cc8cc75e155b. 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/QZGLS2033247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421a01211748de5042c3056e286e1b8e003a02685337e564a6757f330b81cce6. 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/QZGLS2033248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab2f40fc9f70e24c312044ca352d01d0cc2480851b6fc458eaf432462093abe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:45:38Z), 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/QZGLS2033250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100af5274cbcdbc06a4ed201371baaef0c77b1a8e355a5f33330eb7698d8a664. 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/QZGLS2033252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6897ecc104f4f692096b835029c197bfeb34c858798c51dc1f3666b43b759ee3. 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/QZGLS2033253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1d7a6238780e8b792c03e4b77cf98b14f45e0d423303113813a7fdb9cb91a2. 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/QZGLS2033254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2f1fa51e52441d5d79d1d29e680a5e07878b1567fd01077a73ceee09904348. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZGLS2033249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fb5e58c318edf587a4bfe4f780e4257fee3138a6fe2024e94896b3836a843f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZGLS2033251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85227696e168dded412f382787887bf79d0a67e154d1a801355e68367a448d63. 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/QZGLS2033256.
Tbt do Pura: Amor / Sem Hora Marcada / Tô Pronto / Novos Tempos / Quatro Meses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21543ec4aa3f250947bf9903da7c5647203e194f354322e6d7fd9c4ad9fe8dcf. 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/QZGLM2141557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dea396eac46edbbc2f0121b5f3aa0f37776809326864bf4377247ca4b379c0f. 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/BX6MS1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f53f47966c697fcb80dc0d0e0bea172f54c8bc2f2509c9042654c56696dbcf. 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/QZHZ41970279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3afd9961288c2b8dac902946b87b6bfd8e7de600e7385f3d8f6a94bdc8b8346. 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/QZHZ41946785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8606f44e1e720ae02bcce019f01e31f7a3459f246fd49cdca4656380e1b39056. 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/QZHZ41946780.