thumb Alexander Peskanov (; , born 1955, Odesa, Ukraine) is a Ukrainian-American concert pianist and composer. Life Alexander Peskanov was born in Odesa, Ukraine, where he attended the Stoliarsky Sch
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 0x28a16906afe43122f0c936a787fd9de57c71f51b253b209caf051746a011b25d. 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/b76fdc08-cf0f-4c0f-91ff-f29e72c90b2d.json and https://artists.proofprofile.net/proofs/artist/b76fdc08-cf0f-4c0f-91ff-f29e72c90b2d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Violin Sonata No. 1 in G Major, Op. 78: Vivace ma non troppo
Brahms: Violin Sonatas Nos. 1-3, Opp. 78, 100 and 108
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 0x5e5cf88e3a63cc7166cac3fcf5da871d7a9609155ebf2990323ca3960a129196. 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/HKI190107101.
Violin Sonata No. 2 in A Major, Op. 100: Allegro amabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07137a5aeb358dd92514638082bb801189540f0b517093ce32349eb4cb6de5b. 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/HKI190107104.
Violin Sonata No. 3 in D Minor, Op. 108: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d6f62e2602d3036601c292f25a20cd1b41d919826b2c5523abdb9ebbbed122. 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/HKI190107107.
Violin Sonata No. 3 in D Minor, Op. 108: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c480b64e14d4082c10bcce86509bafa84560c5a48a17b609caf193d42514e10. 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/HKI190107108.
Violin Sonata No. 1 in G Major, Op. 78: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686e8e93f20d2c657fa6a7ade74b3e66c0bcdbf0fdda3b346ded17bc5f956666. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:29:17Z), 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/HKI190107102.
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
Violin Sonata No. 1 in G Major, Op. 78: Allegro molto moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b5e885dc4830367c2484209fe924a7fbae0ed614b285dc7bb8289da9dd6016. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/HKI190107103.
Violin Sonata No. 2 in A Major, Op. 100: Andante tranquillo - Vivace - Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6f660432da4b7fe4883d1f3f704cb7d1c636af5b85abd7a6efc79dbf6d4af. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/HKI190107105.
Violin Sonata No. 2 in A Major, Op. 100: Allegretto grazioso (quasi Andante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dec883c21c16ea6c9c53693f38a3f2dc33f5abe488c2626fbae4a210fcc672. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKI190107106.