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genre: german-romanticism
description: thumb|Image of Gustav Lange Gustav Lange (13 August 1830 – 20 July 1889) was a German composer known mainly for his melodious salon music for the piano. Life Lange was born in Schwerstedt, near Erfur
popularity: 3
followers: 135
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    genre: classical
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  track: 8 Humoresques, Op. 101: Humoresque In G Flat Major, Op. 101, No. 7
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  track: String Quintet In E Major, Op. 11, No. 5, G. 275 (Arr. For Piano): Minuet From String Quintet In E Major, G. 275
  track: 12 Morceaux, Op. 40: 12 Morceaux, Op. 40: No.2. Chanson Triste In G Minor
  track: Gavotte In D Major, 'Rosine'
album: The Maiden's Prayer: Leaves from Grandmother's Piano Album
album: Romantic Piano Favourites, Vol. 5
album: Famous Melodies for Violin and Piano, Vol. 1
album: At Christmas - Silent Night Holy Night Fantasies about popular songs, Op.172 N. 5
album: Lullaby To Help Your Baby Sleep 2
album: Romantic Piano Favourites, Vol. 4
album: Dinner With Classical Piano
album: For Elena
album: Poem II
album: Für Elise
album: 클래식피아노 입문자들을 위한 명곡집 Top 80
album: Piano - Classics Life
album: 角聖子のすっぴんライフ～ロマンティック・ピアノ
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album: Classical music for Refresh oneself 16
album: Piano Music Box
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album: 21 Piano Miniatures
album: 행복한 태교음악
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album: Classical music for Sweet and Soft 2
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album: Piano Romantics, Classical Solo Piano
album: Instrumental Collection Of Nice Classical Music As Soothing Babies’ Lullabies
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album: Classical music for feel better music 2
album: Musica Classica: Pastoral & Romance
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album: Classical music for Light and Easy 13
album: Classical Music For Every Day 16
album: Classical music for Listen to your Favorite music 15
album: The Classic Like a Gift That is Pleasing Mind 4
album: 피아노의 테라스 Vol5 - 강아지의 귀여운 아침을 부탁해!
album: Classical music for Listen to your Favorite music 6
album: I'd like To Take The Next Day We Broke Up Classical Music 18
album: Classical Music For Healing 17

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String Quintet In E Major, Op. 11, No. 5, G. 275 (Arr. For Piano): Minuet From String Quintet In E Major, G. 275
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subject of: OpenTimestamps Proof of Existence
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12 Morceaux, Op. 40: 12 Morceaux, Op. 40: No.2. Chanson Triste In G Minor
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Gavotte In D Major, 'Rosine'
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295203
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
  audio: The Maiden's Prayer, Op. 4
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    additional property: Valence (Positivity)
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track: 8 Humoresques, Op. 101, B. 187: No. 7, Poco Lento e grazioso
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  by artist: Balazs Szokolay
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  genre: late-romantic-era
  genre: czech-classical
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af42ecfdb0f7467416b674f7133964f5a465cc6a8f1de46423130e1462d3548. 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/HKI199294905.
    date published: 2026-07-08T03:20:19Z
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track: 6 Romances, Op. 6, TH 93: No. 6, None but the Lonely Heart (Arr. for Piano)
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  by artist: Pyotr Ilyich Tchaikovsky
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 6 Romances, Op. 6, TH 93: No. 6, None but the Lonely Heart (Arr. for Piano)
track: String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto (Arr. for Piano)
track: The Merry Window: Vilja Song

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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
type: PropertyValue
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc67cccf3ee8572750bcf09a438b93fe0683de2c4a9dd98c6c6653045b6e4d9f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKI199295207.
date published: 2026-07-06T07:53:57Z

6 Romances, Op. 6, TH 93: No. 6, None but the Lonely Heart (Arr. for Piano)
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto (Arr. for Piano)
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by artist: Anonymous
by artist: Luigi Boccherini
by artist: Balazs Szokolay
in album: The Maiden's Prayer: Leaves from Grandmother's Piano Album
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295302
additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7421974febf8fd80bff6332003c5efb639dfd67313f054569ffdf1d34e1672f8. 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/HKI199295302.
  date published: 2026-07-08T03:22:41Z
audio: String Quintet in E Major, Op. 11 No. 5, G. 275: III. Minuetto (Arr. for Piano)
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The Merry Window: Vilja Song
type: MusicRecording
duration: PT4M27S
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explicit: false
by artist: Franz Lehár
by artist: Balazs Szokolay
in album: The Maiden's Prayer: Leaves from Grandmother's Piano Album
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genre: opera
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88279d0726314a08276e0c1892410cab21010a8e534ff5336516547d3a046644. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/HKI199295312.
  date published: 2026-07-07T20:41:57Z
audio: The Merry Window: Vilja Song
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Speechiness
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Romantic Piano Favourites, Vol. 5
type: MusicAlbum
date published: 1990-01-10
track: Bagatelle in A Minor, WoO 59, "Fur Elise"
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  by artist: Balazs Szokolay
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  additional property: CopyrightID
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a31251c8b69de62b8a645c9783f0db1a228146a3299551aa6d22afb517a921. 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/HKI199295304.
    date published: 2026-07-08T08:56:20Z
  audio: Bagatelle in A Minor, WoO 59, "Fur Elise"
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    additional property: Tempo (BPM)
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track: Die lustige Witwe (The Merry Widow): The Merry Widow: Vilja Song
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
    type: PropertyValue
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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    additional property: Mode (Major/Minor)
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    additional property: Acousticness
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track: Die Parade der Zinnsoldaten, Op. 123: Parade of the Tin Soldiers
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  subject of: OpenTimestamps Proof of Existence
  audio: Die Parade der Zinnsoldaten, Op. 123: Parade of the Tin Soldiers

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OTSVerifyInstructions
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value: 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

OpenTimestamps Proof of Existence
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date published: 2026-07-02T05:09:12Z

Die Parade der Zinnsoldaten, Op. 123: Parade of the Tin Soldiers
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Famous Melodies for Violin and Piano, Vol. 1
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At Christmas - Silent Night Holy Night Fantasies about popular songs, Op.172 N. 5
type: MusicAlbum
date published: 2023-12-01

Lullaby To Help Your Baby Sleep 2
type: MusicAlbum
date published: 2019-09-25

Romantic Piano Favourites, Vol. 4
type: MusicAlbum
date published: 1988-10-06
track: 6 Stucke, Op. 32: 6 Pieces, Op. 32: No. 3. Rustle of Spring
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
  audio: 6 Stucke, Op. 32: 6 Pieces, Op. 32: No. 3. Rustle of Spring
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track: The Maiden's Prayer, Op. 4
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T05:09:12Z
  audio: The Maiden's Prayer, Op. 4
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track: La Lisonjera (The Flatterer), Op. 50
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  subject of: OpenTimestamps Proof of Existence
  audio: La Lisonjera (The Flatterer), Op. 50
track: Piano Sonata No. 12 in F Major, K. 332: II. Adagio
track: 6 Romances, Op. 6: No. 6. None But the Lonely Heart (arr. P. Nagy for piano)
track: Waltz No. 7 in C-Sharp Minor, Op. 64, No. 2
track: Greensleeves (arr. Friedrich Buck)
track: Suite bergamasque: III. Clair de lune

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OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eddfb5caa17a98b3feebce909369bf779f6f1f6173ba0ee1f4ff1ce716ce4ea. 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/HKI199295204.
date published: 2026-06-13T12:47:07Z

La Lisonjera (The Flatterer), Op. 50
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Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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by artist: Péter Nagy
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additional property: OTSVerifyInstructions
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  value: 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Piano Sonata No. 12 in F Major, K. 332: II. Adagio
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6 Romances, Op. 6: No. 6. None But the Lonely Heart (arr. P. Nagy for piano)
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by artist: Pyotr Ilyich Tchaikovsky
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: 6 Romances, Op. 6: No. 6. None But the Lonely Heart (arr. P. Nagy for piano)
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Waltz No. 7 in C-Sharp Minor, Op. 64, No. 2
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by artist: Péter Nagy
in album: Romantic Piano Favourites, Vol. 4
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Waltz No. 7 in C-Sharp Minor, Op. 64, No. 2
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    value: 0.254
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.941
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Greensleeves (arr. Friedrich Buck)
type: MusicRecording
duration: PT1M0S
duration ms: 60640
explicit: false
by artist: Anonymous
by artist: Friedrich Buck
by artist: Péter Nagy
in album: Romantic Piano Favourites, Vol. 4
  type: MusicAlbum
  date published: 1988-10-06
isrc code: HKI199295210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x6c567a37eea233651ad445aeaad17f32ad4d8ca51f8f3ce4a8a921229fb1d041
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c567a37eea233651ad445aeaad17f32ad4d8ca51f8f3ce4a8a921229fb1d041. 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/HKI199295210.
  date published: 2026-07-08T03:20:19Z
audio: Greensleeves (arr. Friedrich Buck)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.922
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.486
  additional property: Energy
    type: PropertyValue
    value: 0.025
  additional property: Speechiness
    type: PropertyValue
    value: 0.059
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.894
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.218
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.082
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
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Suite bergamasque: III. Clair de lune
type: MusicRecording
duration: PT5M42S
duration ms: 342373
explicit: false
by artist: Claude Debussy
by artist: Péter Nagy
in album: Romantic Piano Favourites, Vol. 4
  type: MusicAlbum
  date published: 1988-10-06
genre: classical
genre: impressionism
genre: post-romantic-era
isrc code: HKI199295212
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x94a35047078079bffe6c51b752892737091bb0153a34fb66352f42165b717c1a
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953536
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953536
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199295212
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T17:25:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a35047078079bffe6c51b752892737091bb0153a34fb66352f42165b717c1a. 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/HKI199295212.
  date published: 2026-06-13T17:25:41Z
audio: Suite bergamasque: III. Clair de lune
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.425
  additional property: Energy
    type: PropertyValue
    value: 0.019
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.042
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: C#
  additional property: Mode Name
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Dinner With Classical Piano
type: MusicAlbum
date published: 2012-03-20
track: Dinner With Felix
  type: MusicRecording
  duration: PT2M10S
  duration ms: 130093
  explicit: false
  by artist: Felix Mendelssohn
  by artist: Leo Nissim
  in album: Dinner With Classical Piano
    type: MusicAlbum
    date published: 2012-03-20
  genre: classical
  genre: early-romantic-era
  genre: german-romanticism
  isrc code: FR8E41200817
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T06:49:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb43f82268bc976a935724ea9b9baf163e9729559ea51f9dd62c36e79560d8ad2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956889
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8E41200817
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T06:56:49Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f82268bc976a935724ea9b9baf163e9729559ea51f9dd62c36e79560d8ad2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR8E41200817.
    date published: 2026-07-06T06:56:49Z
  audio: Dinner With Felix
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.265
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.914
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.159
    additional property: Key Name
      type: PropertyValue
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    additional property: Mode Name
      type: PropertyValue
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track: Dinner With Gustav
  type: MusicRecording
  duration: PT1M26S
  duration ms: 86810
  explicit: false
  by artist: Gustav Lange
  by artist: Leo Nissim
  in album: Dinner With Classical Piano
    type: MusicAlbum
    date published: 2012-03-20
  genre: german-romanticism
  isrc code: FR8E41200823
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8808ae5cb5887041ba8e1d9e7c51b6bdfa80b3923a8e379ba6239cbbe33a13bb
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 956894
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956894
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8E41200823
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T07:53:57Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8808ae5cb5887041ba8e1d9e7c51b6bdfa80b3923a8e379ba6239cbbe33a13bb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR8E41200823.
    date published: 2026-07-06T07:53:57Z
  audio: Dinner With Gustav
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.334
    additional property: Energy
      type: PropertyValue
      value: 0.059
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.922
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.287
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.075
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Nocturne Dinner
  type: MusicRecording
  duration: PT2M13S
  duration ms: 133395
  explicit: false
  by artist: Frédéric Chopin
  by artist: Leo Nissim
  in album: Dinner With Classical Piano
    type: MusicAlbum
    date published: 2012-03-20
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: FR8E41200831
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T21:22:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xcd1ff240f851125e13edc49204191883035ea84349a99a18f933f25fb505545a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Nocturne Dinner

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8E41200831

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

OTSVerifyInstructions
type: PropertyValue
value: 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd1ff240f851125e13edc49204191883035ea84349a99a18f933f25fb505545a. 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/FR8E41200831.
date published: 2026-07-08T03:22:41Z

Nocturne Dinner
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 96.744
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.431
additional property: Energy
  type: PropertyValue
  value: 0.073
additional property: Speechiness
  type: PropertyValue
  value: 0.038
additional property: Acousticness
  type: PropertyValue
  value: 0.991
additional property: Instrumentalness
  type: PropertyValue
  value: 0.913
additional property: Liveness
  type: PropertyValue
  value: 0.094
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.257
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.39
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

For Elena
type: MusicAlbum
date published: 2018-10-31

Poem II
type: MusicAlbum
date published: 1991-01-01
track: Concert in the Glade
  type: MusicRecording
  duration: PT1M42S
  duration ms: 102000
  explicit: false
  by artist: Jean Louise Gobbaerts
  by artist: Lars Roos
  in album: Poem II
    type: MusicAlbum
    date published: 1991-01-01
  isrc code: SEAZC9101130
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T14:10:27+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x91ba97673ccb2ac70e056d9c1e9ed39151637acaeca95d738d2c7a8ce762f7d5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEAZC9101130
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ba97673ccb2ac70e056d9c1e9ed39151637acaeca95d738d2c7a8ce762f7d5. 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/SEAZC9101130.
    date published: 2026-07-08T03:22:41Z
  audio: Concert in the Glade
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
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Für Elise
type: MusicAlbum
date published: 2008-09-12

클래식피아노 입문자들을 위한 명곡집 Top 80
type: MusicAlbum
date published: 2016-07-19
track: Bach : Lovers Concerto(Arr. for piano by C Project Classic)
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  duration: PT1M20S
  duration ms: 80181
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: C Project Classic
  in album: 클래식피아노 입문자들을 위한 명곡집 Top 80
    type: MusicAlbum
    date published: 2016-07-19
  genre: classical
  genre: classical-piano
  isrc code: QZEKE1804478
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZEKE1804478
  additional property: OTSTimestamp
    type: PropertyValue
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0cc6ce4635e6fa07eb50ff4e0113c566a8cbd02b42daf9781b95400780406. 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/QZEKE1804478.
    date published: 2026-07-08T03:22:41Z
  audio: Bach : Lovers Concerto(Arr. for piano by C Project Classic)
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    additional property: Tempo (BPM)
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Piano - Classics Life
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角聖子のすっぴんライフ～ロマンティック・ピアノ
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Classical Music For Sleeping 7
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Classical music for Refresh oneself 16
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Piano Music Box
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Calm Music To Help Your Baby Sleep Well 2
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태교음악 Afternoon 1
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21 Piano Miniatures
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행복한 태교음악
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Popular pieces for piano
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Classical Music Best For Teens 6
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Classical music for Sweet and Soft 2
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Classic Music For Fresh Morning 4
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Piano Romantics, Classical Solo Piano
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Instrumental Collection Of Nice Classical Music As Soothing Babies’ Lullabies
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Klavier Gala
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Classical music for Relaxing Piano Music 14
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Classical music for feel better music 2
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Musica Classica: Pastoral & Romance
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Can't sleep the night of All you need classical music 11
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Classical music for Light and Easy 13
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Classical Music For Every Day 16
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Classical music for Listen to your Favorite music 15
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date published: 2014-06-12

The Classic Like a Gift That is Pleasing Mind 4
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피아노의 테라스 Vol5 - 강아지의 귀여운 아침을 부탁해!
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date published: 2024-06-27

Classical music for Listen to your Favorite music 6
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I'd like To Take The Next Day We Broke Up Classical Music 18
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Classical Music For Healing 17
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