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 0xe6c1081146c4a6e97d65f2d5c3841663eb104df346aaab5b8d5cacaa024c8cf1. 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/036ae928-e212-4b5a-839c-2d71ff50c9c1.json and https://artists.proofprofile.net/proofs/artist/036ae928-e212-4b5a-839c-2d71ff50c9c1.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 0x56252cc956a9d769793e8823c60228c7f8ea2db1fa4668d5b819f6c672d2ffc0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM21104948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee181687e671c1dd7606e67bba940bdbbb84d0f3d2cbf15b8b997b43ceabd55f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USHM21104949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ffb5593ac436a6ce967829d8eb13e616b56cf3948a4e2166830a978fd82619. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGJ1359954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25bba52f856d2ade7e3e7d4faf8032a3b44253e31496851bf186b1a17017d7e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USCGJ1359955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d30012e2b8989dc725d3010feffa8ecd9dc14badc176b9527e67dcc6448c0. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USCGJ1359957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0442c931ce9cfe351f3af816e6e934cf972b1701695cb32fdd7989cffa68cca9. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/USCGJ1359960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd9e41a922b0a0f22ccff0b245d7c4908e156994830f7e4474cf8a8988fe94. 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/US4WJ2015587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a64eae0fa57fc141c3c2a055a0dbe9a59f3d0082845c3ffc39c6f39ce4005a. 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/US4WJ2015588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c9e4959f48c9e05928f0037953ed3cb4b7695d27f4978020a765579dde0733. 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/US4WJ2015589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa663bb6f08e2c0651ed50e98a9bb91f9876cb034eea08f51118e0cf4ee780e37. 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/US4WJ2015590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18d9b44fc1a8f1a2680957e8a44eeb226ece53c39b845fe84a99e90e34fd6d0. 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/US4WJ2015591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2ea51b714a2295b2ee79638cb087238b2d7487a117990f5ff8174b4580f98c. 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/US4WJ2015592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21bc87f334f0869cb551ed3783a475eecf6e6d7ab01fe513c5953d3cf99700b. 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/US4WJ2015593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f627c676fa6c29167be3ea27f27867266383d2d9f7a964c284fdc525911068. 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/US4WJ2015594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62969866b239833dd1857a4b395edea8590b205f04dd916f284fcdfa1e4a36a1. 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/US4WJ2015595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fc4831b796d8b2ed9d92015649c950f30637343b42a6b5331fca701cccd04a. 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/US4WJ2015596.
Ni un Millón de Dioses - Feat Emmanuel Espinosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfa94d88e6f5e1a3cf71617b9d399ad932046c3fdd0445c0a8dfdd49bb944c3. 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/US4WJ2015597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac6ec37fb7969b3d6dfbb36c7fc7a7c8c4dca774bb4d70cbdb04574325af63b. 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/US4WJ2015598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5295b17f6f96fc778746303519e5ecd075386dabcd90e5bcd0eefce77589cbd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CH6541765783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82189db63b2eead3e6c8f046137cb0834d676218285570ce037074e01e80b7b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CH6541828036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a7bdcf1dc970c5044c36c51de1bfef53533bfd24c89e22147bf8123d9ccbd. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CH6541776790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd52ec478165d1137240292681dfc5b778a4686920c64c1668df6dd125087aa. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/CH6541776789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704feabac8f6ad2c817fb23063f94fa301b14cdce9f10a0790e2c9087ae2809c. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CH6541776788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db5959eb19ac40da00dbdc7302de01e9fc527a43ef7f621884395d1cbfdef9f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/CH6542330029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b062315d6d5bb8d10a3722544e6b4ab153a39b6452ec83dd4016235983a8124. 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/CH6542382670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e76a162c99ffc1ee79e76e9d7834783c9f93b5fe6f631506b74815cc5ee3b7. 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/ES8511001870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee659075716d1acf1a040b156e2753211b4f4ccae28fedbf89608db39a724ba. 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/ES8511001871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8700f96fbc1730cb46c25741b657be0b6176ffc0268545cbfa790b260927da. 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/ES8511001873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40187fef60c4ff76d61395e30dd8ac72083a8cf635ffa8efc31b0aa458a62b9e. 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/ES8511001876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb6662ecae474653e86af6f795e78d3ba9a3624e2b8aa6c2e369533928a56f1. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ES8511001877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b4f54133f43e489aadc3f4c9394e6aba996d4bf12f3b001f3548f2349aba3b. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES8511001878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a85be420ffabb351767f95be87209eb0200698aaaaae8afde17721af793c758. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ES8511001874.