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 0xc63423e67bdad25a8f2b77d750bb2002e5f6b71238911ed6b4bea22e3976d627. 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/878400e1-ff88-4384-bb6a-57a18543b4f3.json and https://artists.proofprofile.net/proofs/artist/878400e1-ff88-4384-bb6a-57a18543b4f3.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 0xa88b0a1f580e84d77bad72ea0c1444abc5093a836f2b4b3aa68d0ac86de2be69. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USSD10604542.
Echenle Gordas Al Perro (Olfateando Al Animal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c9f5cb157182816d6de3a7175d47589acd6e9f148232023b98f20c3e685278. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/MXUM60800350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82fa72be24a40072c84bc9c9e03ed24ae0bd4ca726cf55a808162315d3426d6. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/MXUM60800355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6745fa2181dce8563d8dc6e2f27657a1298b3791fbca3211c04163747353a479. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/MXUM60800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dedb507fdf13cfcf3b659c764e7c395c02993ffa0e078d03e615e6d967f1b50. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/MXUM60800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d52ad14e14f712e4846880af2da97be839ceffbd823c3a99fc67d8e400a33. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/MXUM60800361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cb9da90800581f1c406f5e11d9139c738cc821fe3afbfe9fa06621b5a80421. 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/MXUM60800356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73dbbc018bb1fdab0a18e41d0ef5ac65d6c5789feb43660293e8bff185910c0c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/MXUM60800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfbafc5dc8f17ff3ab1fa1723dea5a98060eb585844aeaa36af05cdbc8822f8. 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/MXUM60800378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0e9ac4f0aeb417a10f5058ba8454bb290361c9cdbac4819ab76a3c912a11b2. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/USSD10704485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19fb9241e10d446932b00a95118ff9ebdc48ddf7700e1ecb294c6dbfa8d134. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USSD10704486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7abb4541c00f58ff76b681ca0b55d2c13b7ea41bab046f9ae4e06e0b5a67f1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USSD10704487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fb27baf638ec0ff6fd5a2cc3b9347e35234fe48abff157484eb2e1052b2cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USSD10704490.
El Dueño Del Perico - Sierreño - Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162aa7f9ed525783e0bed09fca4b2f5923a51c1c0af1eb820cb9e7a092f5356f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USSD10704728.
Destino Cruel - Sierreño - Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f462927c25d541bbe66f6bdbcdbfb3a2e0cefc60936e98850cddab47603bc7. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USSD10704729.
La Escuela Del Contrabando - Sierreño - Album Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3155cc5a96fd77bb35fb84cfbb617d8a66035d95aa67d30778632108b3f2f799. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/USSD10704730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588348dd328aa719b3d25da4263bf177d293ff185fa7bb0de1725387a366f1a9. 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/USBL10001610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0bb1d1f08340695d291ba9473861d81100d8745066fa2c31646fab0adca8f3. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USBL10800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe118bc6dae3cfc50f513c64f4945600df3a684e178f5db790b2204cd3ca948. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USSD10604597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f9c1d6bbee58b831445ab2e45a38efe130c5afc87503e7fcacac7c9029a1a7. 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/USSD10604548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f9c1d6bbee58b831445ab2e45a38efe130c5afc87503e7fcacac7c9029a1a7. 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/USSD10604548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2195f2485a0b1190307efc769f4fa9adbb20307e06841aa4db9dec0e103c7c. 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/USSD10604547.