Barbara Buchholz
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description: thumb|upright=1.0|Barbara Buchholz plays a TVox model by G. Pavlov. Barbara Buchholz (8 December 195910 April 2012Obituary in Jazz on Blog (German)) was a Berlin-based German musician and composer. S
popularity: 4
followers: 352
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  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 0x2fc76f8e134136962233b75af765365f9f644a409a5c22e636a1441b17ae9dbf. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0e9aa1e-e31f-495a-bf7f-c1e054d39672.json and https://artists.proofprofile.net/proofs/artist/b0e9aa1e-e31f-495a-bf7f-c1e054d39672.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T14:36:29Z
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album: Theremin Russia With Love
  type: MusicAlbum
  date published: 2004
album: Theremin: Russia With Love
  type: MusicAlbum
  date published: 2005-08-29
album: moonstruck
  type: MusicAlbum
  date published: 2008-06-06
album: touch! don touch! music for theremin
  type: MusicAlbum
  date published: 2008-11-28
  track: Caspar Johannes Walter: Vakuum- Halluzinationen
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    by artist: Barbara Buchholz
    in album: touch! don touch! music for theremin
      type: MusicAlbum
      date published: 2008-11-28
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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 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 0x2ecfad00a4484c942b34496113f1456fc5a210f0bae23a95ecebacfdd514257f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC440506242 — a six-check JSON result.
      date published: 2026-07-08T03:20:19Z
    audio: Caspar Johannes Walter: Vakuum- Halluzinationen
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  track: Moritz Eggert: The Son Of the Daughter Of Dracula Versus The Incredible Frankenstein Monster (From Outer Space)
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    by artist: Barbara Buchholz
    in album: touch! don touch! music for theremin
      type: MusicAlbum
      date published: 2008-11-28
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    additional property: OTSTimestamp
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      value: 2026-07-30T08:30:10Z
    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
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      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa507d6d8336b95b8b1f7ace79df17cce906d52c9980907ba23c79fbe572a081e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC440506247 — a six-check JSON result.
      date published: 2026-07-30T08:30:10Z
    audio: Moritz Eggert: The Son Of the Daughter Of Dracula Versus The Incredible Frankenstein Monster (From Outer Space)
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        value: 112.309
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        value: 1
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        value: 5
      additional property: Danceability
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        value: 0.22
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        value: 0.31
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      additional property: Acousticness
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      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
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  track: Iraida Yusupova: KITEJ–19

Instrumentalness
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value: 0.498

Liveness
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value: 0.241

Valence (Positivity)
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value: 0.067

Loudness (dB)
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value: -23.281

Key Name
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value: D

Mode Name
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value: Major

Iraida Yusupova: KITEJ–19
type: MusicRecording
duration: PT9M13S
duration ms: 553440
explicit: false
by artist: Barbara Buchholz
in album: touch! don touch! music for theremin
  type: MusicAlbum
  date published: 2008-11-28
isrc code: DEC440506248
additional property: CopyrightID
additional property: CopyrightStatus
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  value: 2026-07-30T12:11:55+00:00
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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 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 0xf5d7f4746db0ac8306c5a624b4f86d0f953c2d17d329c98c5b2121dfaeae6c55. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC440506248 — a six-check JSON result.
  date published: 2026-07-30T12:45:34Z
audio: Iraida Yusupova: KITEJ–19
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