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 0x1f856735e25a9925c13e4a2c8b0a2da899a1f5789c100bd21befdd89f00f8f9d. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0585b10-f72e-4b28-89a3-2309aebf1af7.json and https://artists.proofprofile.net/proofs/artist/c0585b10-f72e-4b28-89a3-2309aebf1af7.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 0xd62abbc1b0d36102fc9bf6cd710532f8db93d775a71efad9c0e47fc759055500. 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/ESA011718021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7914b6c026ec67e644bd4afb4a3356f72ead2ee8dd2bda6217deddaf3e53b295. 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/ES6081840202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3a566bab62fe2221bc5e191f0cff00a9fc3f1482aa79f37e5a6b33facf34b5. 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/ES6081840203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c4989f8559a9d50ccde88baa30e3d005b7a025276f7714f0d7f715bbf8de51. 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/ES6081840206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5782837d1df41ec68490507fa8ca7cc5febfa5854c7e6424a58d58ed5e1ad6. 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/ES6081840207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4103953c960d73b7eb0c135d0451c6d042ce28da9b28652ffd147040851e94d4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES6081840208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdc0ecef1f0b8883084790c5d97ea04586d8fd38b1b363e2c3178a24dad0bf1. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES6081840209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefccb7345204c211b38f06b982f01c6c96fd3af7101c5056cdea8d33a230e1ed. 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/ES6081840212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a3676ea781472041c7ee68d58d2b37e0e80c0e6bd9d53d2fe5725395fb9904. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES6081840213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b20a29f880374448df863caaecd7d88bbfa67d07e3939d1cfbc3346fe596c64. 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/ES5021300322.
Solo Importa Hoy (feat. Duddi Wallace & Elphomega)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d47a1e7234ca2cf0a2b8468996fb847ffbadfb2a571581b7ea974607ace56. 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/ES5021300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e71edbf1bdb2d8f7d5f4a4c4e207d2713e2a7d160a37d27e80dd7916c6e968. 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/ES5021300324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11b077490a24da2e92014e5b283f9758739d14832208300db616c166d44c400. 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/ES5021300325.
Palabra De Honor (feat. Halberto El Cheff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208bd212a4bff2a5e6d0b56ab18febf5c55bc218def7379bdf16ca072d0bf463. 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/ES5021300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349784a98fc619acb6df6d894a97d0875b83581500aca64573632b9345cfcea. 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/ES5021300327.
Living It Up (feat. Esco & Zawezo Del Patio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a0ab25fd63ff2fb32f1efa7bdb64866e22064ee982cf67392759a6f4bf0a94. 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/ES5021300328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b8c0b4359ac8fd0ae981475169e1dbb12b1bc1c582c18f80666d5771123426. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES5021300329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f4122a14a68699735da00f1f7144b0c39970fdf4fb496f90b1b59a04edf41. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES6081440803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b7a025e98be2b68935ea1f67c3ac1e4f29c895eb42d25362cdebc9a309c119. 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/ES6081440807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb4316464150e9440bdf9a8ba1506695a7d198b69d36ba57d0b6c357489aa9a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ES6081440812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b343a6d56eaf0a49112f468e070ad73b06e81f9f2c71ebe96bde332061e19c. 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/QZES72087489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce158e08883c004fbd286d60f9e0632bab7bb6c3b3e3f355ab16461940aecb. 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/QZES72088361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce1c8dbcf3ddefd3d19f4e8d053bb3ca450cda6b96bc0230eec2df871edf75. 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/QZES72088366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424db77a04e2bd77158580f797cd826f68710239239d6a1153a7fe2f137b6949. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZES72088368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5657b41b1a4b1f767184587a3ea153db8142ec79cd642f8dc1f0423921f15878. 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/QZES72088373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33decfde21acf0e948af1d6d35ab2c911d46152691cc706b368adbaaba86ae84. 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/QZTAZ2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc991e0b8650a486ba6021251005ce8ea68f73bb950af2558ed33350ca31662d. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QZTAZ2315004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924a78a35f9974a739e3d9705ee4b39729df7ef4c148e03f0a329870c96c241d. 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/QZTAZ2315005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d00f9595efc6541d7d5bb9db5cfaa2ef03ed402eaced510c06ef995e942492. 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/QZTAZ2315010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba593e0d2263873cfeceacbf6f82fe89a19787f17ff1ea3dcb24be027a6b3500. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZTAZ2315013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995bea92406a1070c18a42c2df85073234d79799df42cd222abfcc1d4117377e. 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/QZHZ51900839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2137be9eaa80e10657878cdcb6f42fda5effb2017a25b56fea12938780b786. 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/QMFMF1565755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7ae769dfa63ea68584d5ab2160e6ad0c235d399edc40e40e629c84be5baf76. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZES62087692.