Los Morancos, originally known as Los Morancos de Triana, are a pair of Spanish comedians formed by brothers César and Jorge Cadaval. They originate from El Tardón, an area of Triana in Seville, Andal
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 0x00150349e7004a2668e40da1d94bb96d8baf023f48b6e83fdebed504ae4178ab. 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/4ef55ad3-1ae4-4073-b058-0e922005d26f.json and https://artists.proofprofile.net/proofs/artist/4ef55ad3-1ae4-4073-b058-0e922005d26f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Romero Quédate. Romero San Juan. Un Tributo de Compañeros y Amigos a la Figura del Artista, del Amigo, del Genio y del Ingenio
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 0xde00313682990a4197c4313f0f2aa1ebe768c772960b0fd6f0046df6066abd88. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES6670700277 — a six-check JSON result.
Suite Festiva de Éxitos (II): Dirty Press / La Prensa / Harina De Maíz / A Nuestro Aire / Vámonos Pa' Jerez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29accd0ab6d6e07ca57a82dd7cda0ef61e0280cc2781618158ce3b8d194b03a4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5701001273 — a six-check JSON result.
Noche de Rumba. La Mejor Música para una Fiesta Rumbera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b63161e88f3b375e855a2218a8764f49616298558c6b046c5890be01a7edcc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5631204475 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d797c2a67a221c3e239ac212342728c28af39f47aec825010f78855b6dd37c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2104849 — a six-check JSON result.