Erich Appel
type: MusicGroup
genre: classical
popularity: 8
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b756ef9-c8c6-4f24-baeb-5e954eaadb95.ots
additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/5b756ef9-c8c6-4f24-baeb-5e954eaadb95.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b756ef9-c8c6-4f24-baeb-5e954eaadb95
additional property: OTSTimestamp
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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 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbd7c663469440a25cfe7cd9f9244ef898838a0562391c174cacf17e34e785f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b756ef9-c8c6-4f24-baeb-5e954eaadb95.json and https://artists.proofprofile.net/proofs/artist/5b756ef9-c8c6-4f24-baeb-5e954eaadb95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Beethoven & Brahms: Kreutzer-Sonate - A-Dur-Sonate
  type: MusicAlbum
  date published: 1997-03-27
album: Beethoven & Franck: Frühlingssonate - Sonate in A-Dur
  type: MusicAlbum
  date published: 2002-03-27
album: Reger & Hindemith: Orgelsuite, Op. 16 - Symphonie "Mathis der Maler"
  type: MusicAlbum
  date published: 2006-03-15
album: Bartók: Romanian Folk Dance for Violin & Piano (Digitally Remastered)
  type: MusicAlbum
  date published: 2013-02-13
track: Chaconne in G Minor
  type: MusicRecording
  duration: PT9M16S
  duration ms: 556306
  explicit: false
  by artist: Tomaso Antonio Vitali
  by artist: Oliver Colbentson
  by artist: Erich Appel
  in album: Oliver Colbentson
    type: MusicAlbum
    date published: 2008-12-01
  isrc code: DEQ100840008
  additional property: CopyrightID
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    type: PropertyValue
    value: registered
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    value: 2026-07-31T19:18:36+00:00
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    value: https://explorer.copyrightchains.com/tx/0x7665af50db50eeb055829c921bcb0b86087dbb80475fb20233fbd1bebca32e85
  additional property: OTSHash
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    value: 960455
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    value: https://blockstream.info/api/block-height/960455
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ100840008
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T19:53:13Z
  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 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7665af50db50eeb055829c921bcb0b86087dbb80475fb20233fbd1bebca32e85. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEQ100840008.
    date published: 2026-07-31T19:53:13Z
  audio: Chaconne in G Minor
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 103.294
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.262
    additional property: Energy
      type: PropertyValue
      value: 0.228
    additional property: Speechiness
      type: PropertyValue
      value: 0.059
    additional property: Acousticness
      type: PropertyValue
      value: 0.957
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.144
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.172
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.193
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Scherzo fantastique, Op. 25 - La Ronde des Lutins
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307840
  explicit: false
  by artist: Antonio Bazzini
  by artist: Oliver Colbentson
  by artist: Erich Appel
  by artist: Nuremberg Symphony Orchestra
  by artist: Werner Andreas Albert
  in album: Oliver Colbentson
    type: MusicAlbum
    date published: 2008-12-01
  isrc code: DEQ100840012
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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    type: PropertyValue
    value: 2026-07-30T05:28:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3f49f9eee9ae7831bdcf88f63a19423314374fc45ebae39027aa7fb28e6427e0
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960212
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ100840012
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T05:43:45Z
  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 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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f49f9eee9ae7831bdcf88f63a19423314374fc45ebae39027aa7fb28e6427e0. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEQ100840012.
    date published: 2026-07-30T05:43:45Z
  audio: Scherzo fantastique, Op. 25 - La Ronde des Lutins
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 114.68
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
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      value: 5
    additional property: Danceability
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      value: 0.676
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Speechiness
type: PropertyValue
value: 0.08

Acousticness
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value: 0.964

Instrumentalness
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value: 0.346

Liveness
type: PropertyValue
value: 0.068

Valence (Positivity)
type: PropertyValue
value: 0.724

Loudness (dB)
type: PropertyValue
value: -17.228

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor