Hoelderlin
type: MusicGroup
genre: krautrock
genre: progressive rock
genre: space rock
genre: symphonic rock
description: Hoelderlin were a German progressive rock band that was formed in 1970 as Hölderlin by brothers Joachim and Christian von Grumbkow with Nanny de Ruig, whom Christian was married to. They were influenc
popularity: 9
followers: 5845
additional property: CopyrightID
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  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70ca0f5faf4b859d65bcc799850378ecaefe420d910a7aec8f42f8465940d74. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eab109c7-903f-4140-9af2-a0e14812edd2.json and https://artists.proofprofile.net/proofs/artist/eab109c7-903f-4140-9af2-a0e14812edd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: Hölderlins Traum
  type: MusicAlbum
  date published: 1972
album: Hölderlins Traum (Remastered)
  type: MusicAlbum
  date published: 1972
  track: Waren wir - Remastered
    type: MusicRecording
    duration: PT4M56S
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    explicit: false
    by artist: Hoelderlin
    in album: Hölderlins Traum (Remastered)
      type: MusicAlbum
      date published: 1972
    genre: krautrock
    genre: progressive rock
    genre: space rock
    genre: symphonic rock
    isrc code: DEC371300229
    additional property: CopyrightID
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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 0xc10e8752ef402727319deebcb37733b650f5188ca5827a09315333b27293e2b4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEC371300229.
      date published: 2026-07-06T01:26:17Z
    audio: Waren wir - Remastered
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.048
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.214
      additional property: Energy
        type: PropertyValue
        value: 0.786
      additional property: Speechiness
        type: PropertyValue
        value: 0.094
      additional property: Acousticness
        type: PropertyValue
        value: 0.066
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.033
      additional property: Liveness
        type: PropertyValue
        value: 0.306
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.17
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.717
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
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  track: Peter - Remastered
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179666
    explicit: false
    by artist: Hoelderlin
    in album: Hölderlins Traum (Remastered)
      type: MusicAlbum
      date published: 1972
    genre: krautrock
    genre: progressive rock
    genre: space rock
    genre: symphonic rock
    isrc code: DEC371300230
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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 0xcd495d02fe9e92c20316e38fe63d71cc7631e426ee7f450d8c7d946cd0f48165. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEC371300230.
      date published: 2026-07-05T10:01:46Z
    audio: Peter - Remastered
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.149
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.521
      additional property: Energy
        type: PropertyValue
        value: 0.262
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      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
album: Hoelderlin
album: Live at Rockpalast (Live, Bonn, 2005)
album: Fata Morgana
album: 8
album: New Faces
album: Rare Birds
album: Clowns And Clouds
album: Traumstadt Live From Wuppertal Operahouse,Germany/1977

Acousticness
type: PropertyValue
value: 0.77

Instrumentalness
type: PropertyValue
value: 0.001

Liveness
type: PropertyValue
value: 0.111

Valence (Positivity)
type: PropertyValue
value: 0.417

Loudness (dB)
type: PropertyValue
value: -14.269

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Hölderlins Traum
type: MusicAlbum
date published: 1972

Hoelderlin
type: MusicAlbum
date published: 1975

Live at Rockpalast (Live, Bonn, 2005)
type: MusicAlbum
date published: 2005

Fata Morgana
type: MusicAlbum
date published: 2007-01-01

8
type: MusicAlbum
date published: 2007-01-01

New Faces
type: MusicAlbum
date published: 2007-01-01

Rare Birds
type: MusicAlbum
date published: 2007-01-01

Clowns And Clouds
type: MusicAlbum
date published: 2007-01-01

Traumstadt Live From Wuppertal Operahouse,Germany/1977
type: MusicAlbum
date published: 2007-01-01