Francisca Rico Martínez (13 October 1929 – 9 July 2017), better known as Paquita Rico, was a Spanish film actress and singer. She appeared in 30 films between 1948 and 1983. She starred in the film Le
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 0xe4e66825a6ff05f2fbfc902d96ccaa4cf924394463ba3c16a6aa6c1dea597278. 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/9699f54e-39f4-4a03-82ea-76fd17dbdfd9.json and https://artists.proofprofile.net/proofs/artist/9699f54e-39f4-4a03-82ea-76fd17dbdfd9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sonido Radiole : Paquita Rico (Lo Mejor de la Copla)
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 0x2ee3b9a19ee8acff516dd0b6baafa2aa4b263080a10ddafe0f228968db281717. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ES5279600209.
Dime Que Mis Ojos. 20 Grandes Éxitos de la Reina de Triana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd435a249e54c2e118488750d48c465bbdfcb81223c6997a6478904e5cd7888. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7580502268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129cc2edb3432111c505d30cd5d104d6cb34fb385e1bf14f234572f02e0d3aed. 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/ES7580501270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e149dedf847aa624de4e46077a23f4ee7402157da4506511e6f243ae5e43e8d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES5270103716.