Valery Pavlovich Afanassiev (; born 8 September 1947) is a Russian pianist, writer and conductor. Life Valery Afanassiev was born in Moscow. He studied piano at the Academic Music College and Mosco
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 0x97865727d864903d8a59c5ee0fac646beac9509af384b556495af36b72761233. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/592530ab-c33f-445b-804d-2203b22607f1.json and https://artists.proofprofile.net/proofs/artist/592530ab-c33f-445b-804d-2203b22607f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Kegelstatt-Trio; Duos for Violin and Viola
Trio for Clarinet, Viola and Piano in E flat K.498 "Kegelstatt" - Trio for Piano,Violin and Viola in E flat,K.498"Kegelstatt-Trio": 1. Andante
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 0xe0f74a6b1b46aa4de21c9ac0dce88f345e0064fd10fe7b94cd89227339d67fc5. 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/DEF058401341.
Trio for Clarinet, Viola and Piano in E flat K.498 "Kegelstatt" - Trio for Piano,Violin and Viola in E flat,K.498"Kegelstatt-Trio": 2. Menuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0b171f55ca98615c8aa8434b4cf9ad0a81505124d85fa47386b4ced1b130f7. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEF058401342.
Trio for Clarinet, Viola and Piano in E flat K.498 "Kegelstatt" - Trio for Piano,Violin and Viola in E flat,K.498"Kegelstatt-Trio": 3. Rondeaux. Allegretto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b230e780baa4b7bef33fb6bef4841ca1a448db9559a00b41cf7b38209b5ad9f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DEF058401343.
Duo for Violin and Viola in G, K.423: 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b96f25ab3c314b1b3f8563cc742a3fb43146be521ccb7a34710039546bbba71. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEF058401302.
Duo for Violin and Viola in B flat, K.424: 1. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987f44be3f99508217406247e8485c3b74d24b0929301d968b69cb6c48fbb6a9. 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/DEF058401311.
Duo for Violin and Viola in B flat, K.424: 3. Tema con variazioni (Andante grazioso - Allegretto - Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbae0d126387a8ee5d4e08eda25b13f62958b5e7672a6047c213f12c7daa7b17. 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/DEF058401313.
The Most Relaxing Classical Music In The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8142ae7ac5c05a9c373b0c99757719df554106ce7fae5031324978d54361c40b. 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/USSJ10301395.
Sonata for Piano and Violin No. 3 in G Minor, Op. Posth. 137, D. 408: I. Allegro giusto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe068beaefaff0875f9defa293baebefc7349873932a6973ac91da7ca97992686. 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/FR46Y0331708.
Sonata for Piano and Violin No. 3 in G Minor, Op. Posth. 137, D. 408: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc912df224d263e87a057595b282a40152e9c42b3aa53dbf700225b60c12f2201. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR46Y0331709.
Sonata for Piano and Violin No. 3 in G Minor, Op. Posth. 137, D. 408: III. Menuetto allegro vivace - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f08b470127cb920aee06b96d553af1c8d2c636fa1cedd5f0d773270589340b. 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/FR46Y0331710.
Sonata for Piano and Violin No. 3 in G Minor, Op. Posth. 137, D. 408: IV. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374da4bbec8f9bdc618e6796c90738fe58401f31f14dc1c8c4b9a8411ec01aa8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR46Y0331711.
Sonata for Piano and Violin No. 1 in D Major, Op. Posth. 137, D. 384: I. Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffc9c9cab9aa29003c73df934e388b54b0d914b8ae3e65ca7224e7a30d2922c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FR46Y0331701.
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
Sonata for Piano and Violin No. 1 in D Major, Op. Posth. 137, D. 384: III. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737bca25a5535c736432990cbe0ffb40c8e2e7dcf9c5d92f7dc5803b9ddc2346. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR46Y0331703.
Sonata for Piano and Violin No. 2 in A Minor, Op. Posth. 137, D. 385: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f3068bf5b6ca550f1a753de130c9db700521d973b5cec420a1ae19992f2144. 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/FR46Y0331704.