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 0xaa31b5434106807550829139a9f4dd3487c545be54361d3f104840beb5f4ce6b. 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/73b33468-a167-428d-8047-10afe870b4ef.json and https://artists.proofprofile.net/proofs/artist/73b33468-a167-428d-8047-10afe870b4ef.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 0x782b18dbb37d27076539780e88e830b55647f059a8820baff0878d304630fb0c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAY2252194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24428a7b92e92e5a01e709d65f6e5d0019edcfd897acebe25e8f3271d61f23a0. 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/BK4DA2305426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da7e28226937b3d737b3414989aa2d8427a7e98c6425b9f49eca2727730040. 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/QMBZ92019835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724180a7b546c13420f7110d2a95ed9c70547c5a182c7063ba18101232cae00. 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/QZL432400014.
El Nuevo Tratado feat. Alex Zurdo, Funky, Redimi2, Indiomar, Musiko, Gaona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91865988c53bf53c1a850a060bd02caa5368a2d655628df67d313f6f071ad173. 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/QZ2J21505141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d0f1e39cbbeb4979138b62b6aa8490c367d6a326e97b0875699d418a4862a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1d8284a38bb4b22c90f07deae8a3dc3f4658caddfab401209451dace1fdb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4018d80901d741841055a2225dd336233832853ef919c8c4aa7261694341edc. 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/QZ2J21505144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe793159e7c90ebba731f74ba5118b676de8ea5c14dfb80a5c29cd7b0a5f18f19. 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/QZ2J21505145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26facc665c18e3296275e3b619781d15e6310e03257ee538ee0633ca0d1ae32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030baecc4a30e5dacb5e3e3a117b2fc0a92d3e13e6c5278dc32e853c0621f2a3. 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/QZ2J21505148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8331a6045cb73cfa5e9ab211e9a6262143edc3fc89095c3a295e6bb89e5255. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815a369900c3b257c3d81801c5084d9d68061a8e26e3a5bf48545227f21723ed. 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/QZ2J21505150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd373b8e0fe820a53c8bc1c540c1fad116c40759fca3ab0bb3e23f7ca6a1154a6. 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/QZ2J21505151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ea23ed1cca593ed29a6a06a390e4aa0d153d4753be2313803fdc4a10b42f8f. 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/QZL432400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a90d186a88e036abd702615b67a6b56171504073571de2f9d7a718b110f1378. 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/QZL432400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001801245b0f43e644c721b2e884488c7536ebb8bec3ccb4161e041aff694a1. 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/QZL432400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc773307da7f76e8c9ceb9b9a1e26c609f0a61341070bb50c46d3f6c7fc0fc3a6. 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/GBWUL2499469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd6a303d05b8c3a3888e082d0d5b5ad53e4649f676799b3e989e6a36965bdf9. 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/QZL432400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abd3ce187421095a1c9f095aa952530e70e38ca6125e6ce2887acd4e6115425. 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/QZ2J21506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7505bd15adfa0727849f2f5ff6b9d3fd311f3b6533999cff19b4f0a9b34d5a71. 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/QZ2J21506103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738ca708b4090c935d25bbc4ada600b2cedd0e4bef3f2e01e98ea6cceda33f18. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ2J21505903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128b0e6f04e49a61e8210d000d117bfac9e577758fbd3ac98d22128f0fd8c8e2. 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/QZ2J21505695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd214ce7b3273ba4a6eb7e2996119de270ace982ee7664588796187b342e43d0. 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/QZTL92178926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a59452b27a68769d2586c7d7fb4ecd1ff24e7b3a693b5771c1b537c827349. 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/QM6P42142439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dd902fa9702a6968ebd9f52ed2a5dcf50aff42211fd7bb74786250fc307899. 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/QZHN32187327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3fed648c5359cc1ce1b86983ba074806c2d6fc8bf34a18de1029d7dea1c159. 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/QMFME2053193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec0650f584ce01908e2053d0bdc29d0e27843f77a039d8c6f98ef6d5707f8e4. 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/QMBZ92077218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904bf27c086f9c81d8de3d4e6edda1817baa95c376fd4cd4cb8cff6e15ad3b71. 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/QMBZ92019809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a9172335cb272cd2739b590fda283bb7bd17e5e2aa2435fde9b76f157e608. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN42538678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73b6aa3e5fa2c1b4e8bf625c15e0dfb52c15914f4b1c4fff72ff38a9d3516a8. 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/QM6P42071745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5981567cbae43c1d1de085623e129f36a5191c7017015535840478f29f3d7069. 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/BK4DA2305311.