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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b95ef2d103ade5ffe911b4b9acb44a6800161d3f13a6f69409889676c8a47e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6313d168-37ab-4fd2-8687-cbc375ecf82b.json and https://artists.proofprofile.net/proofs/artist/6313d168-37ab-4fd2-8687-cbc375ecf82b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Volumen 3. Música de Guatemala para los Latinos
Mix Cumbias 1: Fiesta / Traca Que Traca / El Chicle / Fiesta / Palo Con Ella
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961cbdbcc329c51a98275045bb24104169f7e64b134e36587b2f80c2ec9671cd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GTA010706396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648849dc3f68a541b35533be6643a0f3f9b52aabc36afaa292606f13de2941be. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GTA010706397.
Mix Ranchero: El Buey de la Barranca / Tristes Recuerdos / Dos Palomas al Volar / Y por Esa Calle Vive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5230a374c16fa5626605098feabbec359f7426bb2851a17401dd7001236ebcad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GTA010706399.
Mix Cumbias 2: Rosa María / Quinceañera / Por Cuanto Me Lo das / No Tengo Dinero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30888609d2f2529535effc07ffdca38b5c02df1712b8bdf2be2e3f40c6234d4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GTA010706402.
Mix Cumbias 3: La Chispita / El Cable / El Paso de la Mona / La Palma de Coco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c0942bab039a1dba56e23468369c188e7a9f188843f5d974502263ff4fe40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GTA010706404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd809bc403415aea78160e1baa46f228696cd7753747a18bc0e765c6d50cec14. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GTA010706398.
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 0x8b59283fcc061ca3bce6df79ccc37169901c228f8ac388a02ee88e76df14b570. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GTA010706400.
Disfrutando Con la Reina del Mambo Vol. 2. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104263de54416c56ff217a4dbaa6d13d5437f88c9622ea239b4ab8581472473e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GTA010704931.
16 Exitos. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc22e84e20160e5f559b4d3e39b642e285f372c8376618caae8c087d62d8fbc5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GTA010704015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b4fd2cd71a4a1af2a0d609620818c21198a24a99ee3ebe2788a8e98c70ba87. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GTA010704017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26badd364e663f7a9bb9d1654bc213bed70e7ad89144a8701c86813bca15b9ef. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GTA010704018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d329be12af02489fd30cd35dcd73f7899a287f6de968b1907c3403410ee773d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GTA010704120.