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 0x0838de43a916c8c1af91611993155f40a1c1e6210576f3b84328377cd42ae6e6. 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/0e2ea511-0c01-46ec-b58c-7aaab27e7847.json and https://artists.proofprofile.net/proofs/artist/0e2ea511-0c01-46ec-b58c-7aaab27e7847.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Canto a la Merced , Sonido Pancho de Tepito
Timba Timbero ,Sonido Rolly Mix (Cumbia Sonidera)
Ñaña Rumbe ,Sonido Berraco (Cumbia Sonidera)
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 0x4a7ab102a23877bca8ff18dcc4c39ad5f3565208d632aa5c1194f0bdc800c0b8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2402465 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635ae68bb9ab26baaba447d663d5009aa404839b262eac62dcde33836ab41da9. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2468411 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590a56702598c9e11699bd99337cbf1a5d42d398e3c6facf2d020ac063598d60. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2468474 — a six-check JSON result.
Animas de Tepito, Sonido Fania 97 (En vivo)
Ahi Vienen las Fiestas , Sonido Sonoramico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4e81c2e9f33d502c87c7b60637256543025d5dee1b5e21e96a81a0e4af9a59. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2402727 — a six-check JSON result.
Gaita del Parrandero Sonido Pancho de Tepito
Las Sandias de la Merced, Rumba Caliente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf6a9b577007233c3d8ed52377e79806cd75420205cdd8aeab6ee77d9a2f9e8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2405121 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc38a07641a9196b8f264043138664104e8e776806bfda38ca20f6423b8f6f. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJY2405120 — a six-check JSON result.
Donde Quedo el Amor, Salsa Romantica Sonidera
Salsa Vivir en Paz , Sonido Super Dengue
Salsa de las Castañuelas, Sonido Pancho de Tepito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec446d734d4166fb0e0c1de7af0431c1a461c63f7f4fd32d50a389bd4b69130e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2491408 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe3231c5e8c5354c524a46de446833504ac6a97c6d12615ebd8f06e7d82ad81. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2437729 — a six-check JSON result.
La Rumba Tiene Valor , Guaracha Sonidera
A Gozar la Cumbiamba, Sonido Rumba Caliente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a336359355ff841b58c37cfd64c6e63bc727dc2d0190df4494aaaf18a3842e8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2434133 — a six-check JSON result.
A Gozar la Vida, Sonido Pancho de Tepito
Jugueteando Con el Ritmo, Sonido la Conga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef317460e7607e05a4936932bce3768d6b7621d06bc3969e45df305536f04313. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2427458 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385a04ea6e407c2b8a3a398b5c3700b9e0f9c2bba9edc2a1809ee16ed3699447. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2498872 — a six-check JSON result.
Cumbia Triste (Otra Version) , Sonido Rolly Mix
El Pajaron Carpintero, Exito Sonido la Conga
Sentencia de Amor, Estelares de la Salsa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f65219601727b2f17b24990171569173af6fd9e7da44110caae1dcbd6a1044. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2513817 — a six-check JSON result.