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 0xa721bfbf0ac9776c6474561b33023d772abb39465c503bcc6a3ed444b3843ecf. 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/16ab15a8-3083-4f16-8851-e26ef0c2fbf7.json and https://artists.proofprofile.net/proofs/artist/16ab15a8-3083-4f16-8851-e26ef0c2fbf7.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 0xa6a0c2e094f7d63ebc5ee6511a5be4939c4ac1e6a5fa7c28bf86702a56163182. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US6R21358345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b911b3fff13c7760eea2bc075f1a2f3ac4c0f5cb4d07178c3f84031a2202268. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US6R21358346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329cc6ad36a4d57a35a48bb39086903534a3815d0cba12910faec4af8b5c940e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US6R21358350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1821b54784a33af71e9f8180bb90c2306fd7f20b8d66582d6305b5a5237f0da6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US6R21358351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb98b2ec70827c297537074a7e53ea5e63a57f2ba96f48b2ab426fcadbd40398. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES8021500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75173e378d2b8b4e8e693a7d3319cc013ad193dd25fe6160dbc85ecec10cd3f. 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/ES8021500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2981c7408f1c27957bc39fb40fbf9a84971e2a84118a8598da788cbddb9344. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES8021500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906d7ef56d4d515dbce77810b8ceaea91f59ac5f9ac73ec01b349565715b0847. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ES8021500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f855e82bf43c8d79f408926ba86f5ff8ab5ac864fdb148c27df2ebdfeee40a2. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ES8021500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701cf3819d8f0d5a6d2f53de349adf609a0ffffde9956410adae7475e9ce7de8. 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/ES8021500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8478e52b96b1588d103d78c0fc2d8c47009937d7db035ae87b47e88cbf0e3b6d. 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/ES8021500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48776c817d313af3a69e4fe46937fcefdca7b500c53aa5a8e9f631fee4ad9edb. 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/ES8021500400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d93ebca6f57cf43671b7ed9267fec06ec9c9aaa4ed952bfd1bc09fa639ff8e. 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/ES8021700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b654204669024db78fefcead02a94b9885006253af9dd5274c9edaa86319cb. 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/ES8021700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33917983e261934908d196000dee63800a73732b5b3b7cfd7a346fbdc87e10. 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/ES8021700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb284f78e006ff8857c3328a8c9310246f6bc1a77d61608d17730dd4158342a. 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/ES8021700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d36c1ad1585a968b362a0241835dfdf39ad75ce1a1ab1e885a5992e8d7fb38d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES8021700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92cb1a24128852026d27896f68d4c96c5b9fa57eca4b8ad702786881d9e0c20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES8021700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6020b883b62eb864c2752723874bb04a8f4ec852ae98f7a4bc9a34b83cc4ac1. 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/ES8021700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a480ef01aec51272882aad81182bbc71659e570a274cd56c88fe4675e6f1d1. 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/ES8021700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2b64a67e9f6aeb29875fa50bd2840478e2755e700539300bd3749cd24fccc3. 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/ES8021700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73074e894229dc2fb151c5d3abd864e02110234bf1f36db5b72da728b3c8126. 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/ES8021700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136c9bf2fee0893aabc16299ddca1c4f4b75b9e1be86fbff2477b34c01d9041c. 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/ES8021700031.
Guarda'm l'aire (ParatgesPreferits) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d91a5730b4857e23c0df9e17fbe4c501e640ce8a5720f54d7cae8a5c3ba468. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES8021900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfc3faf6764ddb3497b1fb8c9587f81ca8c21d5c6a67fa87fccf89c8cb533e6. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES8021900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5217250af0f8f285c65cacec856f895ab0b960c13a6ec9f689e10e4fd1bb71. 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/ES8021900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7200761e835f694bc080b033ad8e8017fb28881a3c67d035faf25b3af2789852. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ES8021900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eecd378c2d4365dd7d5181881d4df70b2d3de7ad5d6f1ffb45602ca1038ff36. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES8021900321.
La revolta (feat. David Ruiz de La M.O.D.A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10221e02e6c3d6156596bbc05cfeebf2dc91681f362d16de3a8ff8686c90eafa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES8022200007.
Ale Rogetxs! (Versió Himne Del Pego C.F. 1923-2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf71501b182984afc9cd1fc161aa7482abe64a33f8cb26872d02f8e0fec715d. 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/ES09S2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bf5d7c1cce445c811d27c398e060a14907d19cb31f4e9dbcfcef2ec7b7ce83. 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/ES11D2200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5955d55ab0fdc2f1ede14f9dc417cc17c2bc54f00f06ea8b14c0be13de9400b8. 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/ES09S2100005.