Lucía Pérez Vizcaíno (; born 5 July 1985 in O Incio, Lugo, Galicia ) is a Spanish singer who represented her country in the Eurovision Song Contest 2011 in Germany with the song "Que me quiten lo bail
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 0x1d20ea00034f273dc02b1dae08679defa159900e99e75cc9be56e993cb79cdc4. 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/18a887b1-8dc4-49eb-95cc-10e0b8468119.json and https://artists.proofprofile.net/proofs/artist/18a887b1-8dc4-49eb-95cc-10e0b8468119.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd84bc9bc5bc0131aa7940d610a4f823baaed4d1d07da2418893088a0aeec1da8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES5680900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcfccc10a730ac6ca47a8b820e93e15a08cabc8f14b2a9361805bf56b90c3be. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ES5151100613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f874b6ad961f5c9c3af4c254d97879d260adffd3009ca28d0d24c6a232f6e8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AEA2L2209949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6099260eb3b42fbdb79a9fb29dac1fdb9bdbefc8ab939efc17b65ef169a85dc0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES46A2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160e184324cfe5a30611e1f115c5f89824f3bf4f2c75b116e77bc79b33795ed2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES71G2326288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616426e8caf9b0a66f556b38f17aeb57773f688265e284dc09d27d70e0847f3e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTES12403701.