Anastasia Kobekina (; born 26 August 1994) is a Russian cellist. In 2019 she won third prize at the 16th International Tchaikovsky Competition. Life and career Kobekina was born in 1994 in Yekater
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 0x6a270561dc1bac6e2569448a6e57b3d3da72b9dcc493e0dfbf921dcd463e9327. 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/c1222d0a-f79e-4ef2-b6df-f04709512a3d.json and https://artists.proofprofile.net/proofs/artist/c1222d0a-f79e-4ef2-b6df-f04709512a3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concerto for 2 Cellos in G Minor, RV 531
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 0x3bc8671ad0dc62ce1c94e8db71725a7a678e4100678e3e88b6ef0b86d6341ff0. 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/DEAD61404001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1174503ee59f5fe772230e238f8b33dfe434b8c402542915fa3fd36790020e6f. 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/FRU622260401.
Bachianas Brasileiras: No. 5, Aria for Cello and Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58238e2082ac3a5ef784549c534aabe84fd6b68b6570737ce3c924d5bf8f3e47. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRU622260403.
Sicilienne pour violoncelle baroque et clavecin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd8e52d3ee01511926ee894dac357c97a7574ef70126b46fecfd550c9afa7a9. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/FRU622260404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d15d0e6a69813d4d68181331a69d59eca858e0d637f5934779eca30b84b494. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/FRU622260405.
Sicilienne (Transcribed for Cello & Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e87b13805122962a31399133e3bfa11a3ab1f05443dfee5a502d03e00447a9. 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/FRU622260406.
Les Folies d'Espagne (Transcribed for Cello & Harpsichord)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bcd823167bffe1fe0fdfbfa43f21f95cedd44fa32b59b293a96e94acdab680. 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/FRU622260408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad66f79efb5a4fc6497b7bbb23406cdd73875f798ca67b264dc1c3cf3d2b5a7. 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/USQX92405264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8c956b88f9b1a1094c7edf22b35262c236b464889ad4462e276fb8a40f7e64. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303422.
Cello Concerto in A Minor, RV 419: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223545dc06131462da462e5c31b133cdfe5f7d6a6b66c330b38ea890a228b3ab. 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/USSM12303423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc548dd2fb306605c89d5970583baa5d1e264b00d175c43807a2d530514e5c061. 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/USSM12303424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6e4691fb3d5a98b10da238fa3f87c5c41699f61b9dd9f0c2995c101f6ab2d2. 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/USSM12303425.
Cello Concerto in D Minor, RV 405: I. [Allegro]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d2641d8d4116cac1a0e1ab669872ff956e0e41cf8bb84feb1a31b5c26133e9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303427.
Cello Concerto in D Minor, RV 405: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2b445fe340fc970575bbd554916ac0dcd983571bf8d211192e9e9ece903ec3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303428.
Cello Concerto in D Minor, RV 405: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a2820606868b93440f62ad39c8a487104b373fbc11ba4549f35b8ab7eac5d3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e91110187e20e7de9c4e63f78a63d0a976a47c1d8165c2f7f962a2ec9c4f8d8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303430.
Concerto in D Minor, BWV 974: II. Adagio (After Marcello)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865bdcaaecbbc0b9809885b0ecf21dedfec9df8b9104cf9992fe3d65e696ff6. 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/USSM12303431.
Cello Suite No. 3, Op. 87: IV. Barcarolla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7007f96eb3d0ed411f777d7e114818790fcc041fa055e83d5399b0f0e657067. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303432.
Cello Concerto in E-Flat Major, RV 408: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3fa4ea9203f0924d88884c7b08dca59b2b047a9170367187092f3aaaf1424d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303433.
Canto della Buranella (From "Il Casanova di Federico Fellini")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c4aac0a6d579ea531ae892eeb2d87150d18d91c37e7594f57132e7c72cd1a6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e574f5db5efb381df2b688e0260c830d4857e6f020eff9b70e24a857a0a7f6a. 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/USSM12303435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56331c68c2fbc38b305df2bf48810560cf14a842c176bb416356f61788c4022d. 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/USSM12303436.
Signs, Games and Messages: Árnyak (Shadows)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384760b98ae3885db2069e00790c3b71e57d0b868f4793f0caf8f08b6c915508. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303437.
Cello Concerto in G Minor, RV 416: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7d71666c82c1e9ba40cb0b7da3d92c60e81cb31a7b7665f7960db4f4bfa830. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303439.
Cello Concerto in G Minor, RV 416: II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c62da334364286b00d9960ded304341d78deb7fd900826c4fedbf7282c5c1b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303440.
Cello Concerto in G Minor, RV 416: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203ef0c0688316c95093487348bbb54f35e197386411de2435a75bd2af58a491. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc18cb8af57ea590e8b1fc96b429d4ab08360075e91bf30c7581784120d761. 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/USSM12303442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1518b67cf38b5238173f2daa2966fbc111e695458713e5dbffd073c0df95e071. 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/USSM12303443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a20a700dc143d90dc093d6c6210e7e772b9094041374fd79cfab066668b97c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303444.
Concerto for Cello and Bassoon in E Minor, RV 409: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ec6b73b4dc0d42e8b5ba5cf4437182d6620dc73f1ae0cd9084a78e1ad99687. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12303445.
Ariadne's Lament (Variations on a Theme by Claudio Monteverdi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17438781ddda20a0419fed334970ef74019233722eb0133091112c2b831b5540. 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/USSM12303446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2479e507740aae16ce47d40318e6b948beabc2bf3823f07152635623d3d5806. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:34:26Z), 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/CAHQJ1839984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749fb4e39d50ab855452a81b4de325dde73ed3a945950b8e2f5293e2bb27cb52. 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/USSM12405099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226b0c97358b5fbd9d5d946adfab11c64370b5970491521895d6f0aa5231b364. 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/USSM12401740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa512dfa02eb6e6d1cf7818ae2531dd90babdd888e44091d81ce58042bdc74e68. 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/USSM12401739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce63ddf7998034967c79165ef791a7ff5a5eebe7e1c23b834fa970d8482a78f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM12401741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32138f842d5e46e1093795b25c670ac7e84b591e0ddf57ba9e64a5eedb2a7e9. 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/USSM12401742.
Gabriel Fauré: Sicilienne, Op. 78 for Cello and Piano
Vladimir Kobekin: Gallardo pour violoncelle et tambourin
Anastasia Kobekina, Anna Fedorova: Live at Festival d'Auvers-sur-Oise
L'Île prisonnière (Musique Originale de la Série)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf4a6fa746bd89ccaa5389c2fb09c2b6455b4595430092480bd5a6e257a19ad. 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/FRY022200052.