La Bien Querida (The Well Liked) is the stage name Ana Fernández-Villaverde (born in Bilbao, November 6, 1972) used to develop her musical career. A painter by trade, she decided to initiate in 2007 h
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 0xd0ad239f7d36729bfbd49bcae6ced99b48fee15a901c3cc6238c093258dbabe3. 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/8531c68e-79b4-4351-a513-184f101ab407.json and https://artists.proofprofile.net/proofs/artist/8531c68e-79b4-4351-a513-184f101ab407.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 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 0xb68b5146e3ca8ee08b9dcbc9fd8fdd9f17b7ab5a8c1f43da76438d6e54c33d60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU661730301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf865b2203e771ae884ac668420e26ec0f6b70e1ff87a6bf41e6ae7411fdfa937. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES09S1800336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dca8a442792d21fb3642b49919a60eb72f78bed31a9cbd8f529eb344f22e48. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES19A1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9443082fd9760ff673a0d6d9de742439c22adfbc6e0c6432c3d7ee9d5f87ec2. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/ES19A1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91424ac8763ca86cd30e5acf1054b722a19fb353d73a94a40f69cda9aa012995. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P41559289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539661efcd20e151c6eb5f97b4a8fe44b1d1c7c79d98a0e20b98fb1b3b6334a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6P41517075.
Space Escapade - Unit 1 (Destination: Pluto Sector 68)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6b195ee146c7474c76f05c1a40e1862e07e7f14e7896d7326721492ce02ffc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES6641100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d83801abe03283a282b3910134475d5fb8b46e827e0310b65ebca3502fa63f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES6641100036.
Homenaje A Family (Un Soplo En El Corazón De Elefant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ae7a073ee143efefa6d11b682058a1993d2c7a9078ea7dd7ded941d0f48af. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6641400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cc78b8ece9210c708736215ad584ac48b2bfa1b2d72f5ea2c0067f4de64b6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ESA011845663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cc78b8ece9210c708736215ad584ac48b2bfa1b2d72f5ea2c0067f4de64b6. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ESA011845663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03baf4ef19460255dc4b8d7cc3f96895451796adb8dd843ee008d8cdcae9a691. 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/ES7221900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6299b11cbfa4ee0a53aaa3e4d325ab0143929652fcf6540337f863e80d788d1e. 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/ES71G2144243.
Premeditación, Nocturnidad Y Alevosía (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3953a14a65f137d2c8e33b3140953fabf8aa61183217b0f8522017db32225a8b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6641600012.
Geometría Existencial (Los Pilotos & Coaxial Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d458fa9e7da29d2755e87309e359e1ddd2ced38a3bad7c4c2dd322b04ec0f5d. 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/ES6641600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc651a2e00e9b00df4ccda1558180be90626b062e5a471cd8302aeb44db3943. 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/ES6641600014.
Música Contemporánea (Alejandro Martínez-Kinski Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecaf7f033e511773927c466b798322494116ab74d9f2b72050501ab007b61be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES6641600015.