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 0xe4c0c8a13fe963cd6e338723db285f8a604bc10d68aa74aa7decb07a99413677. 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/dc89e5cb-3d88-489c-94ff-3ee076c5c9ad.json and https://artists.proofprofile.net/proofs/artist/dc89e5cb-3d88-489c-94ff-3ee076c5c9ad.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 0xb160a8cefc37b9e6e1df19537a3d68b25fbc208882faece00092905920fe84fa. 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/BK4DA2311724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a5ce82b458012ca58e21ff75e23587c0594e43396aded4346964cc7fc8111b. 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/BK4DA2311660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a9ad4af2ab90da40b97ece51e86a765e0b589ffcd7780de5dbf88811e321fc. 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/QZ7R42354207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d2b6e37fe277e0270a349a4c87f7bc675d6427c625d44ab27ccf5cc86a458c. 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/ARIXB2311780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68d6aae12a657da3d363d7a7149a380ce711ddbc741ea438ceafc0406d7dce. 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/ARIXB2304417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565b3a8940c6559c8f91cafead02cee455c3f9f7c6335d7b3d163c9e426c908c. 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/ARIXB2303321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa462590116f36f757433bca50e146126d428678889216562dcb94ea1733a138f. 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/ARIXB2401077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e700877b5f2f1f4c4bb61c56251d891503db89bab5ee163a471e7adce96709e. 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/ARIXB2401152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0074c67829aecb49a0a55ebfb36bd2ff0ab4afb4cb5b254b75d14414c943fcc9. 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/ARIXB2401153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1554ce47d4a3ebb6a4a32400b308221198eefbfd5309595a7d42361a7239f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZFZ62444658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c46461c073560c19b636357090889d0966569357ea8c7f694f5fbe5afd3766. 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/BK4DA2311722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dde2c99f08b5b0de8b56a4d043f5ccdf72a8cb618e0fc6e952e91b6e901410. 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/ARIXB2301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305bcd83df8a3b46f3c175cba5fe0c7bc38c562b24a622fc9269f4c485aa82e3. 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/ARIXB2300611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c82a3a53441109c1804d6df37d74cf7a62caf2b331c562d457dee527f3bfce1. 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/QZTRX2275418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba2927a945769b339a5daba03851749f78ae657a3f3eae028632960e380c30d. 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/ESA012292965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98e4dfbeb77dd8c4f020e71cc37ce9566a9625e7d312cd63d689d4c00d061d1. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:08:49Z), 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/ARIXB2204634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000a6d0823bf22a1545b385279bffdc4daaa24ecfb36a30565deeedc2a51622. 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/ARIXB2203422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8456dde473b3eb4dcc1788c6c56480ae1950039e40be56399b357357b5356da6. 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/QZNJZ2486191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1920e3be8f917959af4831370c077d8c7f01db6b325e3984948d7c242f4a299c. 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/SE6I32428930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884f5be8419d120a75cef2d55af87b1c37268c7cbc707fc299a0d6a47cf0a1aa. 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/QZ7R42456111.
La DT (feat. FineSound Music & Mauro Dembow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe40d884a772b9e570731d2d22eb8728b3cf796f841dfc9624baea454dfef948. 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/ARIXB2403018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ba4f8bc591aa3d4f63e76931378dad921191b4220b7aba552fb39057a14008. 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/ARIXB2403396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9ce7f07da451cf741bb8542d4ea5e5e103780db7fdea3063e63b28ef5da711. 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/ARIXB2403397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1075269ca17cd27b4a6e99f337659e410d32bafc0d870ff9b8b8577a39c415c6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARIXB2403398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff9d2f086778e88c7231461710149660236c44946bfee6fb1c392fc562c54c3. 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/ARIXB2402681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086ab4812964788adededaff87f576323313e32c1ceb9cf9c95a4c2f5f16895b. 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/ARIXB2401970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8644db5559b96f9b8895200563cafacb30176c9b1cf087f9e52a7c7cf522296. 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/ARIXB2313852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca812e1edaf43f4274ced1f6e28904c48727fae429bad18fbf4f39fe0ebc68. 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/QZNJV2222925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c6b47948826d715a2e2456426f90f74e5d820355c68de34055a374383f826. 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/QMDA72215595.