Xavier Phillips (born 1971 in Paris) is a French contemporary classical cellist, the brother of violinist Jean-Marc Phillips-Varjabédian. Biography Xavier Phillips started learning the cello 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 0x4d777bbca5e78766c76712344fa39479f87c41917f8a264c7fbb711b487a6345. 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/7068bf51-1fb4-46e8-8387-c685b4ea5928.json and https://artists.proofprofile.net/proofs/artist/7068bf51-1fb4-46e8-8387-c685b4ea5928.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magnard: Cello Sonata, Op. 20 & Piano Trio, Op. 18
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 0xd8acec455388f2fe75aee6a206b322e14e7b587b317a2ef3ce3020d9a32be7f6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRPZ92200560.
Chants de la lande, Op. 4: I. Les Farfadets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f656b178c75bde12d5c87ddf93db84e6abd872bd87f41abf2f90f43b30449. 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/FRPZ92201180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9ded48325ebba621c8644fc561efe6da078cf4e7831997e17c5327c981e79. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRPZ92201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24667d44bcfea2de976ad2e7658fae2e6cd1a98131210533d3f56e0993dee7. 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/FRPZ92201250.
Quatre Pièces romantiques, Op. 30: III. Berceuse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ba83bf34c80befdaafb050c7b9a8821dab6a3e6487dd3b6b1890b49ed3be6. 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/FRPZ92201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e658c0b1336fea62709b7982a8cd296f965e73421d880bfcf8ebd4b66e3015. 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/FRPZ92201320.
Charlotte Sohy: Trio, Op. 24: I. Allegro
Jaëll: Musique symphonique & Musique pour piano (Portraits, Vol. 3)
Concerto pour violoncelle et orchestre en Fa Majeur: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4589f2034d3f6e4e41b14e1f176f7a36ebf046eda0ad82677810ad7058a73f. 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/ES75S1500307.
Concerto pour violoncelle et orchestre en Fa Majeur: II. Andantino sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534c8a8a572277b60727cc7e8e9aed60f3b86510c32859fe4f4871a4c8ea420. 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/ES75S1500308.
Concerto pour violoncelle et orchestre en Fa Majeur: III. Vivace molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe6a715c0245c2229abb2c3e8b2494c33d54a10cd3e71c289b8cebd275ade89. 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/ES75S1500309.
Les beaux jours: I. Calme des beaux jours
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2757f58bea60b5b8835621001985b14372919731e818296a6b6b0a9b63f472b6. 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/ES75S1500310.
Alexandre Gasparov: Modeste le petit pion
Agobet, J.-L.: Generation / Phonal / Feuermann / Piano Concerto, "Ritratto Concertante"
Kaija Saariaho: Je sens un deuxième cœur: II. Ouvre-moi, vite
Cello Sonata No. 1 in D Minor, Op. 109: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54222b29e3ba48c4b1ac75bd8e8eb0822750164846719a06a74993690053878b. 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/FR3Z52200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dda9f349ecc9779864d3bf4d8b9936cdebab3bf3ec5cfe9488b96964bd457b6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR3Z52200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479225cbee46303dcc92e6b8e76f075a9113a84c3e2a5ed0677ee2f19abff8f1. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/FR3Z52200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feae0fa856aabb189235e2350c7bb6b0d1fa54d3ca15743a4cc04d954f7fa7d. 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/FR3Z52200097.
Brahms: Trio, Op. 114 & Sonatas, Op. 120
Shostakovich: Cello Concerto No.1 & Symphony No.5 (Live)
Beethoven: Complete Works for Cello & Piano
12 Variations in G Major on "See, the Conqu'ring Hero Comes" from Handel's Judas Maccabaeus, WoO 45
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5f1e3428092f3d302fd92bbe8909adbb44d237647bd7ed8f9f7eb91fe82bf5. 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/FROV61500501.
Cello Sonata No. 1 in F Major, Op. 5 No. 1: I. Adagio sostenuto - II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9b040761ca3f2597eb527b2fe10c4b6eab7d7b5f3bd0137787ea1fec3a868f. 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/FROV61500504.
Cello Sonata No. 3 in A Major, Op. 69: III. Adagio cantabile - Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d40d003f0974c3cd0cdb2113dd432eea728a4e9a25e5146feb4111b33e1e8ca. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FROV61500510.
Dutilleux: Symphony No. 1 - Tout un monde lointain - The Shadows of Time
Schnittke, Shostakovitch & Prokofiev: Cello Sonatas
Amy Beach: Two Songs, Op. 100: No. 1, A Mirage
Rite of Peace - Symphonie concertante pour violoncelle et orchestre
Techno-Parade - Pour flûte, clarinette et piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55b36863e42eef2afeda0719d4b0cab40ee06866f87867475ca14590a899881. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR07X0000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e688df8b1d80c027d24a8bd8ca046ccf2583a9882672b1aa8c9823580f81cfe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR07X0000660.
Le rire de Saraï: Bénédiction de l'alliance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a83508c6788fdcaeac120f873a04298097fd5cf9b32e2f1fe5f3c5bd2058680. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR07X0000640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b60a6d33d6cdc42951b46f6c183c816e627df1a312b677433aea9bf89b871c4. 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/FR07X0000500.
Toccata-Nocturne - Pour flûte et violoncelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d7d7af01e580ef8c649abe6745807957752e3fb0434e652b2236f7d9c85e73. 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/FR07X0000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bff2222ded49b33a9e86a495c4b395696bbdc9193a676a5515872ccda6dc548. 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/FR9W11110235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215b9de98a43ee82befa131bcf3f6506d7213ceb9753aae51a26357426e48d6b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMB2S1600601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93483ca0ba436697324c43e363153aa4792d47a9838e7011bf7118e418855ba1. 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/QMB2S1600603.
Dutilleux: Symphony No. 1, Tout un monde lointain & The Shadows of Time