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 0x5af5b7d02625fc7e97d4c3c75805a7441b3717c2aa6ef266aa3f40f8e15c82d3. 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/e3f087b9-07b1-4b66-b9d4-217db44618d4.json and https://artists.proofprofile.net/proofs/artist/e3f087b9-07b1-4b66-b9d4-217db44618d4.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 0x1d4c1fc42dff5ce275051741544bd87c4e13d9e316b8b81b4681694c94852503. 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/QZNJZ2419886.
40 Latin Hits 2019 (Reggaeton, Electro Latino & Mambo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6b8cf9e4f5101d065e037698b7596adefd05b6f4ec7f3f9c7070b1e8b18a5a. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/QZNJY2433093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ed338152aed4f89130cbe52a92a159c50050dc09fdcead725c28c86d7ecd0. 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/US7VG2409438.
Mojito Mix 2021 (Reggaeton, Dembow, Mambo & Electro Latino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5790d6998c4dfe0da6753bd933c64fea32bc55ec297750823e9402bafbeefd90. 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/ES50A2000108.
Carrete 2023 (Electro Latino, Reggaeton, Mambo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634ff0a838cc7b219033bb9d461fc3a41efa726cc653897e76ffe7e225a5a6c2. 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/US7VG2596438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376b16dc2f22e4baf3df0fbf96f8ce45fac453519709dd45cfcfbfddfb1bd943. 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/QZTVM2486851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0dfa8d9ba50f406afc8f8ce0188912cec09192b502197fc20ee9f176d8dd39. 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/ES50A2300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842ed69e5eb2e584554ee9b63e17302894e77fd23f4f11ade48824b7172889fb. 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/BK4DA2207285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e72eaece26bea664b7c8673d5684f9c9c28df2d5071c7a21571a7ed0996d8be. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:24:15Z), 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/ZZOPM2230942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29377adbad9d38d9298cd09f92d04728b67043a98c93499c73712c66d43b2a40. 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/ES50A2200069.
Verano Total 2020 (Reggaeton, Electro Latino, Mambo & Moombahton)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318e241b3a614045ab8558f657e76bd9b5765ecfe082535f3daa7ba59f9f5d83. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ITH642009783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394883f38fb44ded4ae03fa1cdafb92bc00e6bcc48f9cbf10092a105337cf975. 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/ITH642007768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd957129f5dfc055c38fd5953364fe28722c1b08676d21be9b8796d197fcfc62b. 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/ES50A1900388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df6c58f6794b5a2b5b4561698469414c03191a96d96b84330b7fb89b606d026. 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/ES50A2000175.