Ruggiero Ricci (24 July 1918 – 5 August 2012)As told by Julia Ricci, his wife: „Ruggiero died on August 5th, and because of Gianni's (Ruggiero's son, the Australian pianist) that gave the message to T
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 0x3e8aa4c8351d7780874d203ab76b1abdd43cbad71a6bc6ca362ace6558c6aff4. 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/53e249c0-5a30-4f84-b9e0-96c462515b48.json and https://artists.proofprofile.net/proofs/artist/53e249c0-5a30-4f84-b9e0-96c462515b48.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Paganini: Violin Concerto No. 1; Violin Concerto No. 2; Ravel: Tzigane (Ruggiero Ricci: Complete Decca Recordings, Vol. 11)
Brahms: Violin Sonata No. 1; Violin Sonata No. 2; Violin Sonata No. 3 (Ruggiero Ricci: Complete Decca Recordings, Vol. 16)
Beethoven: Violin Concerto; Tchaikovsky: Violin Concerto (Ruggiero Ricci: Complete Decca Recordings, Vol. 1)
Spohr: Concertante for Violin & Harp No. 1 in G Major, WoO 13 - Saint-Saëns: Fantaisie in A Major, Op. 124, R. 136
Blacher, Mendelssohn & Brahms: Orchestral Works (Live)
Saint-Saëns: Violinkonzert No. 2, Op. 28
Mendelssohn: Violin Concerto; Tchaikovsky: Violin Concerto; Swan Lake (Ruggiero Ricci: Complete Decca Recordings, Vol. 8)
Milestones of a Legend: Ruggiero Ricci, Vol. 3
Khachaturian: Violin Concerto; Sibelius: Violin Concerto; Tchaikovsky: Sérénade mélancolique; Souvenir d'un lieu cher (Ruggiero Ricci: Complete Decca Recordings, Vol. 3)
Sarasate: Danzas Españolas & Pieces by Ruggiero Ricci (Remastered 2023, New York 1961)
Danzas Españolas No. 1: Malagueña, Op. 21 No. 1 - Remastered 2023, New York 1961
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 0x73089d59b04d908736fb0b97728820eb4e54d29ba437018f59689a702256a33e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346248 — a six-check JSON result.
Danzas Españolas No. 2: Habanera, Op. 21 No. 2 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faf0a07c53339d4595f698cfe75083cc104890d4c50761c40a99f3848fec5be. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346249 — a six-check JSON result.
Danzas Españolas No. 3: Romanza andaluza, Op. 22 No. 1 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df2d9e05f3aaa207cbb2abeaece9bfa9ed27d8d4c4a898a9acd811f442a43c7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346250 — a six-check JSON result.
Danzas Españolas No. 4: Jota navarra, Op. 22 No. 2 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7645fbac920f9bbf01a4f74c2b100d77c128221c86e8bc198d56ed856e071c03. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346251 — a six-check JSON result.
Danzas Españolas No. 5: Playera, op. 23 No. 1 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c581e4fbce9a63125e82df4601dbaea5bc6f3b810f6217ff2fb0ac5d2e56a0a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346252 — a six-check JSON result.
Danzas Españolas No. 6: Zapateado, Op. 23 No. 2 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c09beb3371c6ead1fdbcd8341660a38bf1ea36f75a230307106e371a7b0b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346253 — a six-check JSON result.
Danzas Españolas No. 8: Habanera, Op. 26 No. 2 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bbf9c6414623723b954fa385b9a947ed14848cf28dd26f6d52ed9587bd56a3. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346255 — a six-check JSON result.
Introduction et Tarantelle, Op. 43 - Remastered 2023, New York 1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cd6d734fb319ff7c0236170bff62f577cf715340846fd7d38fdf0f88c936e8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PL66V2346257 — a six-check JSON result.
Milestones of a Legend: Ruggiero Ricci, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67bc0286bd798e4694f970468f98967405cfc41fa05de5471718df2352dca86. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921001740 — a six-check JSON result.
Zigeunerweisen, Op. 20 (version for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735e34cf6c0e62d470418e115aa647003962c00ba09a3fa13997adf2f7544c6d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921001741 — a six-check JSON result.
Spanish Dances, Op. 21: No. 1. Malaguena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f57ee02f2e202a8eb5af4ace46ddf53e53921d8e68ff60e420ed77b8d6426. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921001742 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd28616215db30a809ff90952c633a00464528982a0038c130a5e5644b6643a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITX921001751 — a six-check JSON result.
Milestones of a Legend: Ruggiero Ricci, Vol. 2
Danzas Españolas, Op. 21: NO. 1. Malagueña
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Danzas Españolas, Op. 21: NO. 2. Habanera
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8aaea75bef25bcce7bcc7eb72992f73b708cea7379b64d16607f16b9441e4b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981298578 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f0428be65dc0bc57961c96d437af5f3ff72de67ab9d5ccb7c9d13f3239ce4f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATR981298585 — a six-check JSON result.
Violin Concerto No. 1 in D, Op. 6: I Allegro Maestoso
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Violin Concerto No. 1 in D, Op. 6: Ii. Adagio Espressivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6083ec57a2e09ee85054374a69f44d4d766de43ae712a7e24c9e0fdf2f3667c2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAVQ2200087 — a six-check JSON result.
Violin Concerto No. 1 in D, Op. 6: Iii. Rondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a89183f95d3ec25cf41cfd3ca5127ac7ebd9bf7d471465a5e25374c0f7af3b. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAVQ2200088 — a six-check JSON result.
Variations on the G String on a Theme from Rossini’s Mosè
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544647acb48baa5bd2a27d41652c3f8d413cd53ad9f83238a1dc528c7ea23375. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAVQ2200096 — a six-check JSON result.
Beethoven: Violin Concerto in D Major, OP. 61
J.S. Bach: Sonata for Violin No. 1, BWV 1001; Partita for Violin No. 2, BWV 1004; Weber: Six Sonates Progressives (Ruggiero Ricci: Complete Decca Recordings, Vol. 13)
Tchaikovsky: Symphonies 4, 6, Violin Concerto
Beethoven, Sarasate & Others: Chamber Works
Brahms: Violin Concerto in D Major, Op. 77
Milestones of a Legend: Sergei Prokofiev, Vol. 5
Milestones of a Legend: Ruggiero Ricci, Vol. 9
Milestones of a Legend: Ruggiero Ricci, Vol. 8
Milestones of a Legend: Ruggiero Ricci, Vol. 6
Milestones of a Legend: Ruggiero Ricci, Vol. 4
Milestones of a Legend: Ruggiero Ricci, Vol. 10
Argerich & Ricci: 1961 Leningrad Recital II
LP Pure, Vol. 34: Ricci Plays Paganini & Saint-Saëns
Argerich & Ricci: 1961 Leningrad Recital
Red Edition - Mendelssohn: Violin concerto, Op. 64 MWV O14 & String Symphonies Nos. 1, 2, 10
Rossini Overtures and Mendelssohn Violin Concerto in E Minor
Blue Edition - Mendelssohn: Violin concerto, MWV O14 & Piano Quartet No. 1, MWV Q11
Blue Edition - Mendelssohn: Piano Quartet No. 2, MWV Q13 & Violin Concerto, MWV O14
Green Edition - Saint-Saëns: "Symphonie avec orgue" & "Poème symphonique"
Classical Selection - Bruch: Violin Concerto No. 1 & Concerto for 2 Pianos and Orchestra
Classical Selection - Saint-Saëns: "Poème symphonique" & Cello Concerto No. 2
Green Edition - Mendelssohn: Symphony No. 4, Op. 90 "Italian" & Violin Concerto, Op. 64
Béla Bartók: Violin Concerto No. 2, ZS. 112, BB 117 - Sonata For Solo Violin, ZS. 117, BB 1124
Prokofiev: Violin Concertos Nos.1 & 2; Symphony No.5; Romeo & Juliet etc.
Romeo and Juliet, Ballet Suite, Op. 64a, No. 1: 6. Romeo and Juliet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce43eee8f5760d0686d8ffc198e925d1fc47fa5b90c5c1835d0e1a18f8124a4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076142305 — a six-check JSON result.
Saint-Saëns: Works for Violin & Orchestra, Vol. 1
Introduction et rondo capriccioso, Op. 28, R. 188
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44767ea9387e4a5075465a66ca05f426dc1c06670c4500351e83d5ff90ef29fe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192430548 — a six-check JSON result.
Mendelssohn & Paganini: Violin Concertos