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 0x9527ebbcae07ad124283f30294f288af0554f14d5cefdf6fe4557514fc30f891. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/455603b0-ec23-481f-923e-6713518cdb70.json and https://artists.proofprofile.net/proofs/artist/455603b0-ec23-481f-923e-6713518cdb70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arriaga: Obertura de los Esclavos Felices & Sinfonía en D Minor
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 0x8e55fd0429c7a4f668e86fdad291e79b8faf7247271c4b2f3514babd9c899930. 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/ES71A0910222.
Sinfonía in D Minor: I. Adagio - Allegro Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c631bf02ba83150c1b5d2127eb70d1ae75034d7a504000f9bf6077fc08b6b7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES71A0910223.
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
Sinfonía in D Minor: III. Minuetto (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a376ff215c0275373e4dd115242eb5a7585b17d7aaa5c090aef8ea6d2ace12a. 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/ES71A0910011.
Isaac Albéniz & Enrique Granados (Arr. for Voice and Orchestra by Albert Guinovart)
Granados & Guinovart: Suite Goyesca - Ravel: Ma mère l'oye
Jesús Torres: Sinfonia, Movimiento, Partita
Sinfonía No. 3 in F Major, Op. 90: III. Poco allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c96d2edf6fc8c5e8bc53a6281cafdc78032549aec2180483cacee42a2d223c. 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/ES71A0805307.
Sinfonía No. 4 in E Minor, Op. 98: I. Allegro non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe2cc8000728d3c6514fd30bdfc298ef06c0a5008fc781c54c6da97fb4a06bd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71A0805405.
Albéniz: Poèmes d'amour, Evocación, Triana, Lavapiés
Gounod: Sinfonia No. 2 & Fauré: Pavane, Cantique de Jean Racine
Halffter: Sinfonietta & Beethoven: Sinfonía No. 3 - "Eroica"
Sinfonía No. 5 in C Minor, Op. 67: I. Allegro con brio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4bedcf5d74caef7ea1659887db1cb98bb708145b194f53e0fe5484c71e1d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71A0906412.
Sinfonía No. 5 in C Minor, Op. 67: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c07fe98f71410a71362716e8e93094cfe0afc082bf0b1cd4de9d6340ec19f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71A0906415.
Sinfonia No. 6 in F Major, Op. 68 "Pastoral": I. Allegro ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4e4efcb5faaf182d3c7983e5ac84a2cd0edf01161611ce64775ec498e04a8. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES71A0906407.
Sinfonia No. 6 in F Major, Op. 68 "Pastoral": II. Andante molto mosso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93441c5cf966a53d24431c194397dbc3857245999742b634f0d98acd191ecd57. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES71A0906408.
Sinfonía No. 6 in F Major, Op. 68 "Pastoral": V. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05a5d15a72f0951ab88efc02098b31e4698596aefc13de4f69ac2eee74154a7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/ES71A0906411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794b1873f30859b5bb657c1e2916ce49cc8fc4a758b48a8a52cfb103de2ed7dc. 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/ES71A0804908.
Stravinsky: Pulcinella (Orchestral and Narrated Version)
Shostakovich: Sinfonia No. 4 en C Minor, Op. 43
Concierto para flauta y orquesta in G Major, K. 313: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a4ac3c515586f166a527864cfe417a4bba3ef062e46a939ca958bdee2cc80. 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/ES71A0910185.
Concierto para flauta y orquesta in G Major, K. 313: II. Adagio ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b4a871bb49f89896d3aec148b88bdca582f685f835475ff7188e8be1a66b13. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES71A0910186.
Concierto para flauta y orquesta in G Major, K. 313: III. Rondo, Tempo di minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e7af981059fce431460da8b30a3f0442179d231693d01409642c0f193a5713. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ES71A0910187.
Concierto para clarinete y orquesta in C Major, K. 622: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca649f5f2b6bf75c45935b00dbfb474f80ba40ac8a71de378dcae8dbcc3ab6. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ES71A0910192.
Concierto para fagot y orquesta in D-Flat Major, K. 191: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92b63e6bc4708c6cb5d61028684b741e9ad6fdeff91a280bbc0c2f71ddc632d. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/ES71A0910194.
Concierto para fagot y orquesta in D-Flat Major, K. 191: II. Andante ma adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf4f774e5bd9d95d5f2d380de6483b8a16449bd7bfbd4869c598b0860b2846e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES71A0910195.
Mozart: Concerts per a Flauta K. 314, K. 299 & K. 313
Concert per a Flauta i Orquestra No. 2 in D Major, K. 314: I. Allegro aperto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e2b6d6902354130f70e0fa3b964783c0e0ecdb47eefa2919dc71e16c717d54. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V81656827.
Concert per a Flauta, Arpa i Orquestra in C Major, K. 299: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15b0357149b34dc5ef4cca87a2b2e270de24d4bbd05fd4d45ce66e6d4c46a87. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR6V81656830.
Concert per a Flauta, Arpa i Orquestra in C Major, K. 299: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246297589159125391aca21ce8fb0306058ac5a3b2f9a3840f2edfe3c69e4338. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR6V81656831.
Concert per a Flauta i Orquestra No. 1 in G Major, K. 313: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b167e04bdb62d2a603a91639f6966c2e8ad5bb27f6610910da3bb0b5f8d83b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR6V81656835.
Cadaqués Orchestra: International Conducting Competition
Granados: Follet (Drama Líric en Tres Actes)
Joan Guinjoan: Sincotró Alba, Sinfonía No. 2, Pantonal