Ulf
type: MusicGroup
genre: indie punk
description: Ulf is a common first name in Europe, especially in Scandinavia. ULF can refer to: Ultra Large Format, used for cameras producing negatives larger than 8" x 10" Ultra Low Floor, is a type of tram
album: Es ist gut
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  date published: 2019-04-12
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    in album: Es ist gut
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      date published: 2019-04-12
    genre: german-punk-rock
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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
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      date published: 2026-07-31T20:22:46Z
    audio: Geister
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      additional property: Tempo (BPM)
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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: 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
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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  track: Graf Grauenstein
    type: MusicRecording
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    by artist: Ulf
    in album: Es ist gut
      type: MusicAlbum
      date published: 2019-04-12
    genre: german-punk-rock
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-08T03:53:27Z
    audio: Graf Grauenstein
      type: AudioObject
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      additional property: Danceability
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      additional property: Speechiness
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      additional property: Acousticness
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      additional property: Loudness (dB)
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        value: -9.093
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        value: A
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  track: Weil ich was will
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192973
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    by artist: Ulf
    in album: Es ist gut
      type: MusicAlbum
      date published: 2019-04-12
    genre: german-punk-rock
    isrc code: DEOV41900063
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    subject of: OpenTimestamps Proof of Existence
    audio: Weil ich was will
album: Du trägst keine Liebe in dir
album: Block 4
album: Diether Krebs
album: Bei den Alten
album: Graf Grauenstein
album: Vier gute Lieder
album: Heavy Dicka
album: OHM Series 012

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value: https://blockstream.info/api/block-height/960497

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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEOV41900063

OTSTimestamp
type: PropertyValue
value: 2026-08-01T02:22:04Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017db297d9ab4b796022a8c8a3905bf3295a139204913e8583579c9aeeaad80c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEOV41900063.
date published: 2026-08-01T02:22:04Z

Weil ich was will
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additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
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additional property: Danceability
  type: PropertyValue
  value: 0.358
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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  value: 0.1
additional property: Liveness
  type: PropertyValue
  value: 0.104
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.696
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.428
additional property: Key Name
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  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

Du trägst keine Liebe in dir
type: MusicAlbum
date published: 2021-07-16

Block 4
type: MusicAlbum
date published: 2020-01-24

Diether Krebs
type: MusicAlbum
date published: 2019-11-01

Bei den Alten
type: MusicAlbum
date published: 2019-04-02

Graf Grauenstein
type: MusicAlbum
date published: 2019-02-01

Vier gute Lieder
type: MusicAlbum
date published: 2016-11-25

Heavy Dicka
type: MusicAlbum
date published: 2020-02-22

OHM Series 012
type: MusicAlbum
date published: 2024-02-01