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 0x2cf3e783f268feb61468ca574b46f62c43f6e2b2e658f056b013325b83dd1d50. 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/400d9513-30a4-4615-9619-3b59b4ee488d.json and https://artists.proofprofile.net/proofs/artist/400d9513-30a4-4615-9619-3b59b4ee488d.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 0xfcafc055ac6892d154cbb2910abd7c7aa32f6c55ca85d4fbe9833d22fc717602. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/US7VG1615414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c7902d58f7d4411a1807fbfbf938509f0e6bcc308753c338866d9522ced19. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/US7VG1615423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c719c043496cb7b5ef63100f8147f8e313bc0c83eefc776ae985ce4cd53b540. 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/US7VG1615425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5c55c1260e6683575d45e0f41254114f46e97e8e6a55857dd4b55757825fd0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM21816387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e6fbb8e94a00799d1afd5203bd9d7c80193a9cd78c50271f429232af400f4c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USHM21933274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3cb68bfe8436be948a7103cdb420377ff91302c96345d32fedca4564620736. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6MZ2117766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe0feb8021f3fcca17c1d733e0b7b07ff99b2f1b96fb7a7c7d55e1763dd039. 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/QMDA62243178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfef42f53c05cda51a583d7ba2b28a47054f44c27a411838b123cb8bc75da78. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM4TX2342834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b910a5bc07a960bcdd055990ab2a3a91ab0e66c6b7bc18bcf7f71624fb8d56. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TX2342835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa12f90a3c4c2166fb3d5ce9f1ac94a4e3a2aac31136be4b917dd634b05335. 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/QM4TX2342836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622ce5bd1498cd7a31e4968ab796caa7f49c48ccdf9fb680569941d9d4830e3f. 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/QM4TX2342838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cb0adea13b136cb608e2689daecd0458922063ac9bb8d754977ee8d0505eb7. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QM4TW2427971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116892e596f0708dd0ff8703c73309f3f5ac901ff9b8824801148ae4cafe4537. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMBZ92427922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81550a80f9380ad94bb9b21ed84ed31a7a9730537534c12c35b1a7c96c360e36. 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/QMBZ92427923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772eb46b4b314adc2dba0a654fefec0035302cb430d5165956c342633fe2f598. 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/QM6N22434192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b979d07aa71533326bbac2241487d0ea95d9f48971948ae9363e904e70bc8b. 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/QMBZ92427925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb985c21ebac83815ebc94ec1444002c74ec777ebb42383b22a542bff896087e8. 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/QM6P42498950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839aadedde4b45b925c6b1cf7290a84612cbcdc6ed7687f79c7f7cf295459f9. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMBZ92427927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd794f6608843040dc63cbfd791d62ca25139170df610ebf2249aa5b5117000f9. 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/QMBZ92427928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51223ede51a39835b5b91e9574e6f19d6f77585b4e6b67ad61da6491a5d6c596. 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/QMBZ92427929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cb0adea13b136cb608e2689daecd0458922063ac9bb8d754977ee8d0505eb7. 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/QM4TW2427971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af96db95bade62b28b67860681a3c0143687f98f22ec8c4a3fe0f21999d3d1f. 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/QMBZ92427931.
Pick Up Folks (Versión Rockteña X Aniversario)
Pick Up Folks - Versión Rockteña X Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd849bc08ba03e77dd6cda9b1aa6f0fd9c5c8ec60c5ab053bbe334089f4896c58. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QM4TX2568884.
Sin Punto Final (Versión Folk X Aniversario)
Sin Punto Final - Versión Folk X Aniversario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002fd2cc9e3a556e4a0a2b24f318089a6aebac46bad13727583b0d531e54ce62. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QM4TX2568888.
Sergio El Bronceador (Versión Mariachi X Aniversario)