María de los Ángeles Rozalén Ortuño (born 12 June 1986 in Albacete, Spain) known professionally as Rozalén is a Spanish singer and songwriter. Life She grew up in Letur. She studied psychology at th
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 0x0a2a2eefb7dfdd6d1b69820037b8ca752fde167d11f987c0ea46959abf1bac20. 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/cbef14cc-cdf9-4f0b-81ef-ed6f85aadba5.json and https://artists.proofprofile.net/proofs/artist/cbef14cc-cdf9-4f0b-81ef-ed6f85aadba5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Asuntos Pendientes (feat. Abel Pintos & Feten Feten) [En Directo]
Me Arrepiento (feat. Las Migas & El Kanka) - En Directo
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 0x2e1e0a0aa0faa333400b0aec42c5cca34e7ace1e61f435844099ca94ed0cfb32. 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/ES5021601694.
Y Sin Embargo Te Quiero (feat. Angelita de Letur) - En Directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf296a7499a0f3c26571c1d539eec66f0413a3e368e36f0ee351bbe366c32807. 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/ES5021601695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4d45df96c744463666561aa51ad9e93e3f420315c5af0b5763aee73f13aba7. 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/ES6081841601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556428d7563241a62959f46568432209ee7a8b7354cc48ed9ba4b60c9f01f1ea. 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/ES5021300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30867bf1eb60d6faf3e84c65ecf9bfbd8e050bfc37e603ee559da05d1cffa06a. 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/ES5021300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5548f3a510bd9b213a7222ebc990e6658bbbbd5dd7b1393e9063acbad42a43f. 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/ES5021300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59531b1d40d247ba13ce80f9e9cb39626f5ca54da6888c37a258981d8fd73db1. 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/ES5151700905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e553f0c15a0cf8c46fef5955d395ea44a7075eb59e61df55bb9f2348856cd29. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5021800872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e671963184b458e5519e4f6be42d9155b76355a6faaed4a9f1d69bf8dc44d0. 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/ES5021800873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f5a25cbac44196b1973d8cb832b246c5438fcdba86e9ab497def472af817d6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5021800874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26152c8aafb3d06b7dfb9c6da5d8a3ea585f8d13b61bfff26c1e69fd69198ef. 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/ES5021701933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a60aef71dabcde74358cbfecaa6d815369ac66385651efd598df960cb1600f5. 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/ES5021702380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413de9ed3282bd12309d6c62871881148c70d2ab1d2af002cfb447560c6c66bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5021800849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e7d7d2394c153e1c50662ec60e205eca7cde3305ebd48e9f82d3ca3a7437eb. 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/ES5021800399.
Una Luz en la Ciudad (feat. Carlos Sadness)
Una Luz en la Ciudad (feat. Carlos Sadness) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf0555863a3dfc11ad9464ba9264c8aae8f140679bf4db7b2ef37d800bba3a4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ES5021901571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc183bb2d4738df81fe233faac12ea8115f5f092b6c9d3e7bea90eded4d2f71. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5022202406.
Todo lo Que Amaste (feat. Fernando Velázquez)
Loba (feat. Ainoa Buitrago, Alba Morena, Lachispa, Lea Leone, Maren, Marta Santos, Las Migas & Yarea) [Versión Coral]
Estoy Contigo (feat. Ana Torroja, Andrés Suárez, David Otero, Funambulista, India Martinez, Iván Ferreiro, Maldita Nerea, Melendi, Rozalén & Vanesa Martin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45cff3667f77fe7d5432e2fdde81597cd9bbb0a58a88d0dc3c2eb0cbe07271a. 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/ES5021702128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b892ba8687b07ba678178ef8762bc898f313d79f9a89866a4a5fd33521f3fa. 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/ES5021900369.
El Amor De La Clase Que Sea (Edición Especial)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9066a401faaa764e32e30b93a3d1bd6212b8c25927a02bee142ac7e66d7f904e. 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/ESUM72302979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1650995130a0c4e63f534d5ad40edce71e14b8415b944781dd0c5bee03cb067d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USA2P2344291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aad6b85356a78216698d558b4d720d26adbb71f7832cd0932d23145b284c22e. 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/USSD12200240.
Solo Pienso en Ti - Tributo a Víctor Manuel (feat. Dani Martin, Iván Ferreiro, Jorge Drexler, Rozalén & Santi Balmes) - Versión 2022
Solo Pienso en Ti - Tributo a Víctor Manuel (feat. Dani Martin, Iván Ferreiro, Jorge Drexler, Rozalén & Santi Balmes) [Versión 2022]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d573c23e8dd22f8999e87856e4ad80d45463b832234b02ae1f192eb8725129. 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/ES5022201858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97dccc248d419ecdf1fb370e237e49c3c6bedcc1a6ce75a18a487137a73dc7e. 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/MXF012301100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6245baee8531a510f667239d185031238c854afb9428badc895f527f989a0f30. 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/ES71G2100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314f90c7df8a7ea3fff5dc7729f9fefa00c3d813fd51f7d5dff3d4bb2a06c201. 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/ES71G1504682.