Olga Pashchenko (; born 1986) is a Russian harpsichordist, fortepianist, organist and pianist who has performed in concert halls in Moscow and other cities of Russia, Belarus, Italy, United States, A
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 0x9ecc9b92f3b4a0d9130092a368a3823e22d1da96240082c9a7ef6683f983f4df. 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/b93634ea-a6a2-4be4-aa6c-14d332e43983.json and https://artists.proofprofile.net/proofs/artist/b93634ea-a6a2-4be4-aa6c-14d332e43983.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dussek, Beethoven & Mendelssohn: Transitions
Lieder ohne Worte, Op. 19B: No. 3, Molto allegro e vivace, MWV U 89
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 0x2e6c7f217c7891009b19c8a1eff60a7aacb2af0f686c3664df8cc7d5182e8600. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR50X2311901.
Lieder ohne Worte, Op. 19B: No. 5, Poco agitato, MWV U 90
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf538d77d9df533980a253abc01db827dfd494f6312b534c73d6217f2daadee55. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:11Z), 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/FR50X2311902.
Lieder ohne Worte, Op. 30: No. 1, Andante espressivo, MWV U 103
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ab4517b68c769b5b4d60b04572a93830537ff08acb8d55459aa64dde2d5e24. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:47Z), 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/FR50X2311903.
Lieder ohne Worte, Op. 30: No. 2, Allegro di molto, MWV U 77
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eafcacf679e56d1400be8f126c8742052e89e51ee3ddb373b7a9b6023867711. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:40:49Z), 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/FR50X2311904.
Lieder ohne Worte, Op. 30: No. 3, Adagio non troppo, MWV U 104
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389c413d890f16188ef229373ea629f4696142fd1e88c295f91550e95361d7b7. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/FR50X2311905.
Lieder ohne Worte, Op. 30: No. 4, Agitato e con fuoco, MWV U 98
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbd95e86bd10416c772b10b889d7c90810a7d86eb950cab3efa40fe6fa94fe0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:37Z), 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/FR50X2311906.
Lieder ohne Worte, Op. 30: No. 6, Venetianisches Gondellied. Allegretto tranquillo, MWV U 110
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67af31f7b793ad89211d009b3e47d27de14f18a07b342ad96b1dc4bed1cb9b7c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR50X2311907.
Vier Lieder für das Pianoforte, Op. 2: No. 1, Andante H. 301
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01c3ac707c9461d08c098bffec5c4f6cc7cba4226fb09d5a879cc0fb1d24173. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR50X2311908.
Vier Lieder für das Pianoforte, Op. 2: No. 3, Villa Mills. Allegretto grazioso H. 357
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01aef17d3940b7f91d480a83f650cc39b73f9ebb61d73dc46be3f43ec3094e4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR50X2311909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb959fb9ec62d0b89795397aeefb3b7bb3f0cacb8765e7726fe76774bffd799. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR50X2311911.
Lieder ohne Worte, Op. 62: No. 3, Andante maestoso, MWV U 177
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe7174e77b8bee2a383440b61f7049f1ff142c272588dbbde5a675bcd135b87. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T13:02:33Z), 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/FR50X2311913.
Lieder ohne Worte, Op. 62: No. 5, Venetianisches Gondellied. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fdfdf6a1675a8053cb9bf0eb969f261d66810e68ae83c01dc79ce5d949f3ba. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR50X2311914.
Lieder ohne Worte, Op. 62: No. 6, Allegretto grazioso, MWV U 161
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a02e165e0eb3f96a113808d7d85a5f569086d8ee568f9097aded17782eb800a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR50X2311915.
Vier Lieder für das Pianoforte, Op. 6: No. 2, Allegro vivace H. 356
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9348cc5ec33cb76aa3981fc166dbbe3046df6d628d60872a8cc022bd3be13. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FR50X2311916.
Vier Lieder für das Pianoforte, Op. 6: No. 3, O Traum der Jugend, o goldner Stern. Andante cantabile H. 424
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d7d3aa6dbe68cbdb633361c1cc5b313b7f7ac890bf9677abdb650dd82e5150. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:50Z), 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/FR50X2311917.
Vier Lieder für das Pianoforte, Op. 6: No. 4, Il Saltarello Romano (Tarantella). Allegro molto H. 372 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bdbdb916e93fe99bfd7397a497fe346dd9addfbabc3979301a1a4c64f39b51. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/FR50X2311918.
Lieder ohne Worte, Op. 67: No. 2, Allegro leggiero, MWV U 145
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fddaa8313acf79e1e531f2b498421f22bc0248435ef21fa2750f9a7314a332. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR50X2311919.
Vier Lieder für das Pianoforte, Op. 8: No. 1, Allegro moderato H. 423
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9601dab9f0339703789ebbe50f1b83a1870efaad9eb8fa9ebb9bf58bf22828. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR50X2311922.
Vier Lieder für das Pianoforte, Op. 8: No. 2, Andante con espressione H. 463
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9df2a29d6a7c4e5019aeee3799fe936d46065b884c6a99b2f0308dd20992cc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2311923.
Vier Lieder für das Pianoforte, Op. 8: No. 4, Wanderlied. Presto H. 458
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7071206d5ba3a405e9a883650fb6e846adae7cafba15a9d1526c93085dfae3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:36Z), 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/FR50X2311925.
Concerto for Two Pianos in B-Flat Major, Op. 63: I. Allegro moderato
Dussek: Concerto for Two Pianos & Chamber Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e036a46576f3c77a7e0f09faddec9d84b4e32f2ebaa614266f883a36b91d32. 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/FR50X1841601.
Concerto for Two Pianos in B-Flat Major, Op. 63: II. Larghetto sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13af2009f10f575793f71e09a181662a0f0ce36f193c434102fd77589bc6a3c8. 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/FR50X1841602.
Fantaisie pastorale hongroise, Op. 26: I. Molto andante
Beethoven, Kuhlau & Doppler: Variations on Folk Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a933f869af115fb92a89eae4677357ddeb9b2c023df38ac1087417ffb6886b. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/FR50X1963901.
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