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 0xbc96c631c78648937165e738f493d87c9344f86ae31c2b87f949ab3b70c13189. 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/39816860-d0e4-4ade-9c60-dc8c6c9c8cf2.json and https://artists.proofprofile.net/proofs/artist/39816860-d0e4-4ade-9c60-dc8c6c9c8cf2.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 0x5b9714a139cd640726dede904a5211c8d0087262792a18477fb09a29939e920c. 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/BRM1Z2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b78551585d66768f0cf1b71ab0be1957ea778034f42caf1597f9d2400c5f6c. 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/BRM1Z2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f781a42ed7c4cf692b68ff980d6bc9a843860ca01bd5081fa171862b63565. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRM1Z2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2656893ad13a76ed3c87a81b1dd105ca15772a3bfe4de14ca09c7ca7154b5875. 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/BRM1Z2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657361334fbca1e8f01b250653db4fe80820fc979bcb9b2e93b7c51473a1e37. 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/BRM1Z2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4039fbe20cda88beb79789199e7ec3af03a7163f877fb62748b0a1da9b41ea50. 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/BRM1Z2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47e9788518a5246edae69f819bb25d8091f25423600576cf344b0d81fa66cf. 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/BRM1Z2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4c12456cceb1dea56319b788141f4b751aedc3c01d41168d5cead481ab21cc. 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/BRM1Z2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f1ce7180648221f7eedc29108ea86876cef1dba28063cc299798580f9d79c9. 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/BRM1Z2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cbd6124e962d7f1dda74354fc5eaa4131bd8d0e26c2621aba92b27a9bd5fbd. 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/BRM1Z2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a114fc8ca953a23c15fff812b931bda807181234ca2ed0bdbaee9c3ef52f3. 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/BRM1Z2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232054d397b9bd26bc37f07f708cb913051908038b2a8299ec4c96691d2e1e11. 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/BRM1Z2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeec16d2b39f3bd9f2c2cf98a82d73da39fb6010eeec1b355c2cecfcfac10e2. 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/BRM1Z2300010.
ÌYÁ ÀGBÀ SIRÊ - O Poder do Sagrado Feminino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f98921c7b19d3991904bc64b73253ebc0f9aa34369fd8dc7ba18fb0c14435c0. 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/BRGPG2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc930ffb10081d0152ca35de8af42d610de689c5e083c147f00f848e4908f6a9f. 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/BRWQ61500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f98892d4dbb87963a7195db78fbe242a76a700d11da9f7a01a35f3eb1d668e0. 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/BRH7D0900002.
Maria Bethânia - Noite Luzidia (ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5644365d1358397aea228c65405e4e17329fb172202f8fc0583ff8ff750e7a. 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/BRPUI1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca6e998d1bf64efcf172a772d2f23400a75c76b2ca4ddc3b6f6e84840aac422. 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/BRKUA1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9714a139cd640726dede904a5211c8d0087262792a18477fb09a29939e920c. 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/BRM1Z2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b78551585d66768f0cf1b71ab0be1957ea778034f42caf1597f9d2400c5f6c. 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/BRM1Z2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169f781a42ed7c4cf692b68ff980d6bc9a843860ca01bd5081fa171862b63565. 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/BRM1Z2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2656893ad13a76ed3c87a81b1dd105ca15772a3bfe4de14ca09c7ca7154b5875. 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/BRM1Z2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe657361334fbca1e8f01b250653db4fe80820fc979bcb9b2e93b7c51473a1e37. 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/BRM1Z2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4039fbe20cda88beb79789199e7ec3af03a7163f877fb62748b0a1da9b41ea50. 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/BRM1Z2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb47e9788518a5246edae69f819bb25d8091f25423600576cf344b0d81fa66cf. 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/BRM1Z2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4c12456cceb1dea56319b788141f4b751aedc3c01d41168d5cead481ab21cc. 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/BRM1Z2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f1ce7180648221f7eedc29108ea86876cef1dba28063cc299798580f9d79c9. 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/BRM1Z2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736a114fc8ca953a23c15fff812b931bda807181234ca2ed0bdbaee9c3ef52f3. 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/BRM1Z2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19162a501efa9419fd67ca7bb6dc44ac1f10f82284b8166e07f9048597440a48. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/BRLXL1900005.
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