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 0x84f08aeea1d388d86fbf839e180e20e9ea1aaa58265a2f5578bef285d34fb1d6. 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/bde1c3c6-9ccc-452f-9c82-f26316d32dd4.json and https://artists.proofprofile.net/proofs/artist/bde1c3c6-9ccc-452f-9c82-f26316d32dd4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix Guarachas (En la Casa de Don José/Negrito de la Salsa/María Teresa/Compay Gato/La Vaca Blanca)
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 0x6b2fc75be072bf528d013c3bf2d9bd1c3eb9ea838e5cb34eb238edf7006504ed. 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/US7VG2597435.
Mix Juan Luis Guerra (A Pedir Su Mano/Las Avispas/La Bilirrubina/Visa para un Sueño)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6420238d2a64a6df7d740d700349757420905cbaa49a719853518e1eeccc01. 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/US7VG2597443.
Tributo a la Salsa Peruana 2 (Deja de Caiga la Noche/Necesito un Amor/La Única/Adicto a Ti/Ánimo y Aliento)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3f175b6d7d47ec86657abc7762b3f7a8b314eb9b2a930bbcaf36bf01769063. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:57:56Z), 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/QZTVM2441609.
Homenaje a Héctor Lavoe (El Rey de la Puntualidad/Te Conozco/Che Che Cole/Barrunto/La Fama/Todo Tiene Su Final/El Todopoderoso/Mi Gente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0637879350eb54aa0a8977626ec72050af128ae95c2f2ad4144fa06936da64be. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZTVM2441610.
Homenaje a el Gran Combo de Puerto Rico (Y No Hago Más Na/Achilipú/Se Me Fue/Te Regalo el Corazón/La Muerte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9122153638149485a569adfb65296c1c0b25d88ea35a2bf1d242fc8142a4b48. 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/QZTVM2441612.
Mix Salsa Juvenil (A Puro Dolor / Confio en Ti / Quitemonos la Ropa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf53ae4cfc88b38fc93bdcd0cb7bce1efd4b7d6a2f8d582c9cf6f02fe624829. 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/QZW9K2244446.
Mix Victor Manuelle (Apiádate de Mi / Tengo Ganas / Por Ella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d0b9c2a5f14ee7db384ba61fd49f953b5c1da5a8c244db1a865f69523d7991. 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/QZW9K2244448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdbe2586289e4852d87f636eefe054bc31d8a35053fa453ced852635e9968c1. 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/QZW9K2244450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ddd1d2dd4965867f18f79807f545a2eba176b629e50347e03ed90fe153470d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:57:24Z), 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/QZDA71993447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25e4ffc1ea59384d65090958acbff217d94e28ee409837bab478b599e23f457. 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/QZDA71993450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb4c9dcbc8e8815e4c3aa8541ee212cb4614b4367f4e3eb356b719ba474fe66. 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/QZHZ52097771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb475c9e81f337bfa9c106f15845da82ad191234042be976cfdac7c7206d1df93. 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/QZW9L2484645.
Mix Paquitop Guzman (Que Voy Hacer Sin Ti/Y Es Que Llegaste Tu/25 Rosas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18aa6ac145b4d69cf372347503595cb1dbc3fc3c0dfd208513068596e6ad794. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:06:20Z), 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/US7VG2456594.
Mix Natusha (El la Engañó / Rumba Lambada / Sin Ti / Tú la Tienes Que Pagar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd6ae280f0125dd5d61aececf583f2ef96c845b5ac13d1802fead9510130f32. 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/US7VG2444062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a55fe5c18fc66b509840d48a5b862c987915127b77ee199e11bd2fb3bfc32e1. 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/QZNJW2378538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4470a6e4c1d80e19c80f541723211dc681216e41fa47444b3a79b5ef2f7bf377. 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/QZNJX2268558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e939e9516e6352d2cdfe78b4b6dca267f7d17be6203fee2eae909f2a45e0f1e. 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/US7VG2233829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda2712c9f4826e9904fe3a12b2aedafed132301f4b61407505165aff80664f7. 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/US7VG2229642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d0fc3809e6b4ec882e88a7b45bcccfa508c7ebb5bad3b7fb89ad0293459f0. 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/QZNJV2134479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f00d01631f61a30c0ee612bc51990438c113ad7273c80871ed8360ec1264c3d. 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/QZ5AB2110448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aed772c0048bf298432d6c4198ea93c0f71952c883fd004e3ce6337bb1f719. 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/QZHZ52076441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8a79787e0de86cfceb788e807f9e8e03d79724594828ece9fc1746ca428131. 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/US7VG2365571.