Esther Budiardjo (born September 24, 1972) is an Indonesian pianist. Esther Budiardjo was born on September 24, 1972 in Jakarta. At age fourteen, she sent an audition tape to the New England Conser
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 0x4c65018569231e9c0b0b2f65602bcd9e2564c53a2bc136731271cb72a4ff7319. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bf8b0d4-963d-4b35-85d9-4221124b77d6.json and https://artists.proofprofile.net/proofs/artist/7bf8b0d4-963d-4b35-85d9-4221124b77d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moszkowski: Brahms Hungarian Dances (Piano Transcription) & Vingt Petites Etudes
10 Hungarian Dances Wo01: No. 1 in G Minor: Allegro
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 0xfb78379e401751533ea1b33b5f8cfe428edacd77b315421ad841d0ee9478acbd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX0901272.
10 Hungarian Dances Wo01: No. 5 in F-Sharp Minor: Allegro - Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81691d67c2c29b9f07adf013f3d63e61e5a9e158d372added087ac1a93fd49d. 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/USACX0901276.
Petit Etudes Op. 91: No. 5 in B-flat Major: Tempo Animato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795f679f8a326ec4e01866da5d13640781ff1281b00b0ebaf72e53fd6f6cadf2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USACX0901286.
Petit Etudes Op. 91: No. 7 in G Major: Allegro Brillante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa860162f77b93eba1a432a9fbd974e248bba99d7e34f07f7d9b22a1dc756f3. 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/USACX0901288.
Petit Etudes Op. 91: No. 8 in B Minor: Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57bed63e2f5fe44d92eaf65a1eae48dcdafd4c18d6e4fac223038054b7d2d5a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX0901289.
Petit Etudes Op. 91: No. 10 in G Minor: Andante Con Moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfd69cb8171f4a5a193f07cfee96f531d0bc5128d4d82b0883fbb1254bbacd4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USACX0901291.
Petit Etudes Op. 91: No. 12 in C Major: Veloce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191656ca36a511e715ae49acb3f9e8bd87bcb26421f58c4768e95b53f32086b2. 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/USACX0901293.
Petit Etudes Op. 91: No. 14 in C Major: Animato e leggiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ff89c208f7cf75c9ce9997f358cea809b8ef48defcd84e65203acbf9cc0db6. 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/USACX0901295.
Petit Etudes Op. 91: No. 16 in G Minor: Allegro Energico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20df746f412606f6f1907dfeb91ace986cc3d06ac3acaea17f48760aeca8dbd6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USACX0901297.
Petit Etudes Op. 91: No. 17 in E-flat Major: Moderato e Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa65a6fab447bae0730a9183662b033a96962980a5c74e65524518ebda5c103. 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/USACX0901298.
Petit Etudes Op. 91: No. 18 in A Minor: Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae45712edca583aeae5b6890b305ebd6ea2446a10aaf0ee55c000adc9a0b91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX0901299.
Petit Etudes Op. 91: No. 1 in G Major: Con Moto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94f755bc9e85ba730f161670f8e50ccd01f71dc67d70dd8341781cc5ae58569. 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/USACX0901282.
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
Petit Etudes Op. 91: No. 2 in C Major: Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964b5e55fc4d06f8525c56ae7321a2c7e5c12bc9d28e828387f2339479a5833. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USACX0901283.
Petit Etudes Op. 91: No. 4 in F Major: Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c473a499a713ff6f4058614cf32932b0516b660357eaf66fc4e5ed8970cad5. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USACX0901285.
Petit Etudes Op. 91: No. 6 in E-flat Major: Allegro Non Troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f02aa7a75785976c1ad14839e05fe76341566f5f5ced3549b95c730442c76dd. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USACX0901287.
Petit Etudes Op. 91: No. 9 in G Major: Commodo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a2babc1c2910a73cf69e77f2499eb907aa530efae07ec4e2047e0b64cc65f0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USACX0901290.
Petit Etudes Op. 91: No. 11 in C Major: Allegro Ma Non Troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9396874a51555e07585ba6bbd6c03447d4690cdc682e335814c15a1abf80befc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USACX0901292.
Petit Etudes Op. 91: No. 13 in F Minor: Con Moto Ma Non Troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3253790179da91358ac582fb971e65f67a38a0660c699ea11b2b16180fbe68. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USACX0901294.
Petit Etudes Op. 91: No. 20 in G-flat Major: Allegro Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73042f81b24d53165d59a9d4dc5f37eea8f218a518f5353cf8f45777bcf31bdb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USACX0901301.
Godowsky: Jave Suite, Tansman: from "Novelettes"
Jave Suite: Part I. Hari Besaar: The Great Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4bd71124cb056728d74981b5ed83e0d6a263cf665d3499da48572f49d66b36. 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/USACX0901436.
Jave Suite: Part II. Chattering Monkeys at the Sacred Lake of Wendit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee8648ba691e11f973eb3065fefc3b60714c4c8c4491d7a0e243ef2f5c063e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USACX0901437.
Jave Suite: Part II. Boro Budur in Moonlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae8aa0afe2d4978939ecc00b2a8b83a414649bbb44c32c687183f37286e11bf. 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/USACX0901438.
Jave Suite: Part II. The Bromo Volcano and Sand Sea at Daybreak
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bb537d0819ce4aa54e6b72bbe19a8493c2a0f39ae779b8d103d9a59a8dc03b. 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/USACX0901439.
Jave Suite: Part III. Three Dances: I. Moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682f96d16dfd1c5a6d0fc40fcd8fa4fcda8822cd8ee7704138f39a555a2f21fb. 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/USACX0901440.
Jave Suite: Part III. Three Dances: II. L'istesso tempo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b775c32b3a243d66f005cc9b1e409e1e28a9c0602a45514630c45ed49491dd. 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/USACX0901441.
Jave Suite: Part III. Three Dances: III. Doppio movimento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d22ef966c4e4ed8bf9ca3db56e09dc89eec742eddfdc49ea8d7d1fce48f310f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USACX0901442.
Jave Suite: Part III. The Gardens of Buitenzorg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984779ff9ca81db3bf2e674bd283c1c237fb6c738088d702bbf1d30cb7e5cfbf. 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/USACX0901443.
Jave Suite: Part IV. The Ruined Water Castle at Djokja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda906568867507284621384fceafabeda085f07f018aaf7282e6afe1fbc1b219. 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/USACX0901446.
Novelettes: No.3 Exotique (Danse Javanaise)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2b102ac690b431d11c43e4acd5876233feb8196434a54fe898f0713f905ea0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USACX0901448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9a323d8e92cccb90b33fd1851dcd0cc0cd66ff281a6b1b7017b16890d5493b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USACX0901434.
Jave Suite: Part I. Wayang-Purwa: Puppet Shadow Play
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f71a28cb9af75d5950b3f84b1eee5cf1a3424504d58b1043cb91318ce98e358. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USACX0901435.
Jave Suite: Part III. In the Streets of Old Batavia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e5e34e7e389c6e24d46c875052512b0e692c57290481e61a87e82585297ea8. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USACX0901444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8e337cf029f794127e1c39e4e5f0947b5da35cc0a286a2ee6583fc9229cb4e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USACX0901445.
Jave Suite: Part IV. A Court Pageant in Solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb7a2eb2caa87d85f094581c6a973698f25f49917e27d0319a76def28ae56a1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USACX0901447.
Felix Mendelssohn: Fantasy on "The Last Rose of Summer"
Queen Elisabeth Competition - Piano 1999 (Live)