Classical Kids
type: MusicGroup
genre: classical
popularity: 18
followers: 2701
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953620
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953620
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f4a0d36-daad-4915-a6a4-82ffb4db4a24.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f4a0d36-daad-4915-a6a4-82ffb4db4a24.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f4a0d36-daad-4915-a6a4-82ffb4db4a24
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:36:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9392f364ea1193bca5f379e341507e94c75ad054047deb7124242aff6355efa. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f4a0d36-daad-4915-a6a4-82ffb4db4a24.json and https://artists.proofprofile.net/proofs/artist/1f4a0d36-daad-4915-a6a4-82ffb4db4a24.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:36:10Z
  text: {"copyright_id":"0xf9392f364ea1193bca5f379e341507e94c75ad054047deb7124242aff6355efa","name":"Classical Kids","registered_at":"2026-06-14T07:40:45Z","symbol":"NIM0384403","token_address":"0xae96d0a036b712c15770e8a9419e797184f0c28e","type":"artist","uuid":"1f4a0d36-daad-4915-a6a4-82ffb4db4a24"}
album: Beethoven Lives Upstairs
  type: MusicAlbum
  date published: 1989
album: Beethoven Lives Upstairs
  type: MusicAlbum
  date published: 1989
album: Beethoven Lives Upstairs
  type: MusicAlbum
  date published: 1989
album: Mr. Bach Comes To Call
  type: MusicAlbum
  date published: 1990
album: Mr. Bach Comes To Call
  type: MusicAlbum
  date published: 1990
album: Mr. Bach Comes To Call
  type: MusicAlbum
  date published: 1990
album: Mozart's Magic Fantasy
  type: MusicAlbum
  date published: 1991
album: Vivaldi's Ring Of Mystery
  type: MusicAlbum
  date published: 1991
album: Vivaldi's Ring Of Mystery
  type: MusicAlbum
  date published: 1991
album: Mozart's Magic Fantasy
  type: MusicAlbum
  date published: 1991
album: Vivaldi's Ring Of Mystery
  type: MusicAlbum
  date published: 1991
album: Mozart's Magic Fantasy
  type: MusicAlbum
  date published: 1991
album: Mozart's Magic Fantasy
  type: MusicAlbum
  date published: 1991
album: Vivaldi's Ring of Mystery
  type: MusicAlbum
  date published: 1991
album: Vivaldi La Clef Du Mystere
  type: MusicAlbum
  date published: 1991
album: Daydreams and Lullabies
  type: MusicAlbum
  date published: 1992
album: Daydreams And Lullabies
  type: MusicAlbum
  date published: 1992
album: Tchaikovsky Discovers America
  type: MusicAlbum
  date published: 1993
album: Tchaikovsky Discovers America
  type: MusicAlbum
  date published: 1993
album: Tchaikovsky Discovers America
  type: MusicAlbum
  date published: 1993
album: Tchaikovsky Discovers America
  type: MusicAlbum
  date published: 1993
album: Hallelujah Handel
  type: MusicAlbum
  date published: 1995
album: Hallelujah Handel
  type: MusicAlbum
  date published: 1995
album: Hallelujah Handel
  type: MusicAlbum
  date published: 1995
album: Mozart's Magnificent Voyage
  type: MusicAlbum
  date published: 1998
album: Mozart's Magnificent Voyage
  type: MusicAlbum
  date published: 1998
album: Mozart's Magnificent Voyage
  type: MusicAlbum
  date published: 1998
album: Mozart's Magnificent Voyage
  type: MusicAlbum
  date published: 1998
album: Song of the Unicorn
  type: MusicAlbum
  date published: 1999
album: Song of the Unicorn
  type: MusicAlbum
  date published: 1999
album: Song of the Unicorn
  type: MusicAlbum
  date published: 1999
album: Lo Mejor De Tchaikovsky
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Handel
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Vivaldi
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Mozart
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Tchaikovsky
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Handel
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Tchaikovsky
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Mozart
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Bach
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Tchaikovsky
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Handel
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Beethoven
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Bach
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Bach
  type: MusicAlbum
  date published: 2004
album: Lo Mejor De Beethoven
  type: MusicAlbum
  date published: 2004
album: Le Meilleur De Vivaldi
  type: MusicAlbum
  date published: 2004
  track: Les Quatre saisons, Rv 269: "Le Printemps" Allegro
    type: MusicRecording
    duration: PT2M53S
    duration ms: 173893
    explicit: false
    by artist: Classical Kids
    in album: Le Meilleur De Vivaldi
      type: MusicAlbum
      date published: 2004
    genre: classical
    isrc code: CAC110433282
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Les Quatre saisons, Rv 269: "Le Printemps" Allegro
album: The Best Of Beethoven
album: The Best Of Bach
album: A Classical Kids Christmas
album: The Best Of Mozart
album: The Best Of Tchaikovsky
album: The Best Of Handel
album: The Best Of Vivaldi
album: Gershwin's Magic Key

OTSBitcoinBlock
type: PropertyValue
value: 956790

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956790

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAC110433282

OTSTimestamp
type: PropertyValue
value: 2026-07-05T12:31:54Z

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 0x3ed924114de67686a823e6d5ce6cf9cb88ba268aa8489856b09df7ec81aa89e1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAC110433282.
date published: 2026-07-05T12:31:54Z

Les Quatre saisons, Rv 269: "Le Printemps" Allegro
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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  value: 4
additional property: Danceability
  type: PropertyValue
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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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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  value: 0.358
additional property: Loudness (dB)
  type: PropertyValue
  value: -17.375
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major

Le Meilleur De Bach
type: MusicAlbum
date published: 2004

The Best Of Beethoven
type: MusicAlbum
date published: 2007-05-31

The Best Of Bach
type: MusicAlbum
date published: 2007-05-31

The Best Of Bach
type: MusicAlbum
date published: 2007-05-31

The Best Of Beethoven
type: MusicAlbum
date published: 2007-05-31

A Classical Kids Christmas
type: MusicAlbum
date published: 2010-09-14

A Classical Kids Christmas
type: MusicAlbum
date published: 2010-09-14

The Best Of Mozart
type: MusicAlbum
date published: 2012-10-01

The Best Of Tchaikovsky
type: MusicAlbum
date published: 2012-10-01

The Best Of Mozart
type: MusicAlbum
date published: 2012-10-01

The Best Of Tchaikovsky
type: MusicAlbum
date published: 2012-10-01

The Best Of Handel
type: MusicAlbum
date published: 2012-10-01

The Best Of Vivaldi
type: MusicAlbum
date published: 2012-10-01

Gershwin's Magic Key
type: MusicAlbum
date published: 2021

Gershwin's Magic Key
type: MusicAlbum
date published: 2021-02-26

Gershwin's Magic Key
type: MusicAlbum
date published: 2021-02-26