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 0xc970031f6e0deb5e7f23ae58c7bce1396a88e45db3120f0790b49eaad7d83d72. 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/551bb1f1-4ab6-41f8-a6c3-fde9692ef718.json and https://artists.proofprofile.net/proofs/artist/551bb1f1-4ab6-41f8-a6c3-fde9692ef718.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 0xd238d85d13b681072c5b945dbc1c13f32a2614d669676fb686f75f82619b2ffa. 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/QM4TW2090213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220514c430c0507464c1b046c3f79c5a2e4fd833cddfcf439940846fa0846e04. 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/QM4TW2091322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365181405225c847a709a072c517abb81d6bf8405293876fa466952733f94589. 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/QM4TW2095099.
A Lo Doble Paso (Remix) [feat. Jowell, Franco El Gorila, Voltio, Wiso G, Frankie Boy, Maicol Superstar, Falo & Og Black]
El de las Manos Magicas: Underground Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c968f2704e98c46276706b1344649d4edda8bf0e01e20b98cd4b392a42479f9. 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/US7VG1930585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6a729522a2b1d4df0440271af3bee5ac092559c416b53a6d5ae1b01bf8475. 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/US7VG1930586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e1e7668e46bf2b49ecb822e6396b9baf0d0b8a40e7f374c4b8c62af78e3416. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:48:51Z), 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/US7VG1930593.
El De Las Manos Magicas Underground Edition
El De Las Manos MÁgicas (Underground Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61c24ea667fecf779e9fde0d3d8146b2cb1602fa0c58b1fcb1c251753b75c3b. 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/QZHN72103372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d7ae935a60d9caf7f5c9baf43cae1663ee5b0a960e6712e8bbcb9bf05dfd90. 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/QZHN72103374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290234e8103a0d672dd212a87e2bdf9911f89a2b3311330b23325c59d63ccbf9. 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/QZHN72103375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab504efe87c259ccff3c28248bd9878cf6d2ff665a192b533466adb975e3a3a. 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/QZHN72103377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d88f938f9043675e57b60dda7913f7c65f4275573f5a0fcea6ad94a0c3d2a4f. 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/QZHN72103379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ebe22dd9fe703c173425986fa6e933e7ac9d758cf6c55ffe25183e9b81026d. 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/QZHN72103381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676f566521e5c125915012b733dbe1d4084f0f326f7820fe798bb636d9f5e7b1. 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/QZHN72103384.
Underground Reggaeton "The Best Of Radio Version", Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815cf39449750590110f4a6738c0fe336c488725232762214d54709b329232fe. 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/USDHM1106634.
No Fear 2 Killer Rhythmz 15Th Anniversary (Underground Reggaeton Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4635da1a685edf1ae43a1c6e80ea4ae31479e0ca2fdc1370f643e7bfc414ae63. 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/USDHM1112341.