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 0x8b17ce087d7fd87b7f02dd6882f10d043b3bd5965e8609462256cb0149634b67. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f051a58c-043c-4611-b59e-3dc574e04a84.json and https://artists.proofprofile.net/proofs/artist/f051a58c-043c-4611-b59e-3dc574e04a84.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 0x2686d42b93c2266e8343b626f6d54807d2ec30bf534b41066860ff6134c8f08e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:36Z), 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/GBSMU8540688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c39f44b2d70f4de0263b42e22b422058af0696fbeb3ab403fcbb2c544e9445. 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/GBSMU8527145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efed9919133919d3ffa5a1988350c01b25bb01f47605cb0b76ed4e8c85e7ca9. 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/GBSMU8527147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386cabd7b8d70fd9620bb7fa56d499e223bbcddd6b058b7179b999ded59e143e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:43Z), 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/GBSMU8527151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879b77d175ab1af8bdc9c4fe109fe3f0fc8526b2055f7e4d62551244373f8643. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBSMU8527152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69316eec29e54da3df9d9f3eda55b79991f5890867e66bf3e0aaafaf2a71ffab. 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/GBSMU8527153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa4f921de75cf144a5914e80bbaa3ed48ce7ee6d6f6d4f404f0e660bc12b06d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBSMU8540588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b603107571efd64e16213590c265fed89a3036ee888be74768cf38bba4e7086. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GBSMU8540720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e87c86b52f5607f39293794e42cac4816b099fb043ab63cb98bd9795e2d252b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:37Z), 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/GBSMU8540721.
Aromas de Libertad (Son Tus Perjúmenes Mujer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9291e6eac750d73065e79b5b16301575d0c9bdd4c63b5bf838d351e44e7de8dd. 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/ES7960703421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df38c77c814a2158863bdd78264e4e6cbd260bd9772812c2f352c67b9365379. 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/ES7960703422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba3218370e6c1f6064d280ef0064f9ee949e87c75949233abf9fb9ae3b549e2. 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/ES7960703423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557d803f4067341085bb7a377ab8a7ba14cf7886fca08b4cb698e9a817e4d58f. 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/ES7960703424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37335d886db9188ae0b51d9f764e2ff9f8cc3a155a8c743a76cad4ad51dc9c6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES7960703425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9132424b1982821f23283b2546de69da547c1ee35fde33bf000eb6fb3c21113f. 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/ES7960703426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef4160f8d03ede2494b5715b2043d6d314c30d6477b8834ef45822ce3bb5ae6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES7960703428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519f5cf35c05d74b93e2b15df1b45457b43c08508f72efbf560d8158f32f3dd4. 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/ES7960703429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb553f7d438c00607028f9d87e033fee16da50627decfb4725350eee5ad1b7c. 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/ES7960703430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b289d30072093a05254eccdd775e798cd18379f60c049ef0b3dac81b9b52c76. 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/ES7960703431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f9fc6673521c289c217a0f2df6f281ce23c9855759aca6c18d5a687dda270. 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/ES7960703433.
En Concierto - La Buena Nota (2000) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57d946f7755e329da930635b365a72f00ccae4d0d79a9f1a0525efb6ecb9388. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:31:24Z), 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/GBSMU9471637.