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 0xcfc6fdc27f6f6d1c9b693f504cab0f9636d689cb9f47cd7f1a589284996c2298. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3873ddda-e503-499f-a305-49403319a6c3.json and https://artists.proofprofile.net/proofs/artist/3873ddda-e503-499f-a305-49403319a6c3.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 0x2746d0ed77d6fe2eaa9a5b2f34f654c8a8720cfc517993ee0fe5945b529937d2. 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/QZEQU1920484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6433a69a6902e7374ec798829d5f97273e611f7d22a14d51918ee20fde6b79a. 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/QZEQU1920491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74907b4f4af2ae31f48aa97ae9deef269a9050bd5cded9da3ee2762515eeb6ca. 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/QZEQU1920492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1984e97b8d492aaf02d4bf8325f13ee97da0835d4c0cd7b2431f08673563e7. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZEQU1920493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5451e57aae271ea1dfa1cd7a65fd3ff978e2ca93ec1e1adfecd50177ce8c9569. 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/QZEQU1920494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a75e27aae8467bc83213ea112367d1dd2ef7284d010a50f07f8adaa4df40793. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZEQU1920495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bae9e12c11bef5bf2f35e5b2178a41b1e87102ffdfc762df61ac7d687af555d. 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/QZEQU1920496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576c6ca0255a496e3b2d9a7f8f67ebf35d3c08c5ffcd8b2936ea8e786d78f24b. 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/QZEQU1920497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1338472e1e8491e687ea729a5d4712582434a375d2afdc76b31346078ed49eb. 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/QZEQU1920485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf797cf054996626dbd998e09c987c4b175be1336e3a4781b8682e14389efd685. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZEQU1920498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e26884477b20a8bce5f88e3f6110e9ee5075f63009e2ec6745a979e0d34d81f. 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/QZEQU1920499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e58cefdde261bb7f04f09ff1ab1a94da55e5eae7e2e05cdd54b0ebbed3dbcbe. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZEQU1920500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eccc0d26a3a202ca248000516952d6710af8aa03258334805fbc38bddc0f1aa. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZEQU1920486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cc36effe33179f94a4080e3693f3de8f5e6d062cafd750919b2c4a5272955f. 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/QZEQU1920487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e2ad345bc46f3b9d16aa051cdfb731030d3910beac819233f7a30a45133c68. 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/QZEQU1920501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd41995cfdec479ecf066fb6c813517a5abcf6acf337670aac05ddb8a617a46. 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/QZEQU1920502.
Medley Chamames / Quem Sabe de Mim Sou Eu / Sem Palavras / Fui Dando Porrada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588e295adc1a89b7ee619264700f8ce67c619c917f24ff85fc5dffdd5cf630c4. 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/QZEQU1920488.
Medley Bailao / Alambrador / Po Pega / Nao Encoste / A Barriguinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2a40f89a480dc6db9fb9d97feb24193a8221f96195be209cdbabd22677734c. 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/QZEQU1920489.
Nedley The End / Levanta a Mao / Pais e Filhos / Pe na Estrada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffeb499bea797c8bef3995844d9d8e271bd063f460050f6f913b183d08dc8a0. 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/QZEQU1920490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82bd66c3ffef2f58f5f664068040c922b26f283fe2b203d840577848def518c. 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/BR5K41800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf80827a9493caa35fe607f7c847a77f1a31e17a7efccefb98aa2a5a997a7d9f. 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/BR5K41800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac53993b7fc7e612ce22260ae9b1bfc55e45ce27d1a17eab1f56d412e7fc8e1. 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/BR5K41700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd1edac154f0692cd7e6ab8a613e6c7a42f2ee44033497b8595fb419a352a26. 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/BRAPI0401694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3122ffb81efb1c85b9993633c0a2309ebe1355e6cc4d619addca6613a4bb4508. 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/BRAPI0401692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8128cc356971930cec613ab23603b03e9cadfb2ae03a2f1171752e17a544f951. 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/BRAPI0401691.
Campeãs Sertanejas - As Melhores, Vol, 1 (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3122ffb81efb1c85b9993633c0a2309ebe1355e6cc4d619addca6613a4bb4508. 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/BRAPI0401692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97b29bb8b6c49f31701c42b5155983f9d77322f57e4016181c43fb0379bf18. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRIMT0200177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ab262dcfd47ef87f9a65f23e0193fde07ed32650c2396c11848d4767f070e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BRAPI0501116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0cf505fda19a7a8c679383aa0e90c3f8cbda509e7bc8b97b32db798e5628fb. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/BRAPI0601274.