Eric Noltkamper
type: MusicGroup
genre: polka
popularity: 12
followers: 402
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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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 0x0bea99d98f98f0f9b5e081651f2c87dae87cc5cc52c97541bc55100870128f8a. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdcf00d2-deaa-4a86-9aa9-5eddd3c9a3e0.json and https://artists.proofprofile.net/proofs/artist/bdcf00d2-deaa-4a86-9aa9-5eddd3c9a3e0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:55:24Z
  text: {"copyright_id":"0x0bea99d98f98f0f9b5e081651f2c87dae87cc5cc52c97541bc55100870128f8a","name":"Eric Noltkamper","registered_at":"2026-06-15T00:27:52Z","symbol":"NIM0624639","token_address":"0x332de5755c64f043678ee7e7447a2635d26f4a28","type":"artist","uuid":"bdcf00d2-deaa-4a86-9aa9-5eddd3c9a3e0"}
album: Reflections of Cleveland
  type: MusicAlbum
  date published: 1994-01-01
  track: Buchan's Polka
    type: MusicRecording
    duration: PT2M2S
    duration ms: 122488
    explicit: false
    by artist: Eric Noltkamper
    in album: Reflections of Cleveland
      type: MusicAlbum
      date published: 1994-01-01
    genre: polka
    isrc code: USTC30787790
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: 2026-07-17T01:45:28+00:00
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      value: 958349
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC30787790
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T02:28:59Z
    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 0x8d9133699e0a39fee6031ab18ea9687cc6ff5ec460e6b2043462e9ff610df411. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USTC30787790.
      date published: 2026-07-17T02:28:59Z
    audio: Buchan's Polka
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.072
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.841
      additional property: Energy
        type: PropertyValue
        value: 0.451
      additional property: Speechiness
        type: PropertyValue
        value: 0.062
      additional property: Acousticness
        type: PropertyValue
        value: 0.157
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.255
      additional property: Liveness
        type: PropertyValue
        value: 0.07
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.965
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.301
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Waterloo Polka
    type: MusicRecording
    duration: PT2M46S
    duration ms: 166478
    explicit: false
    by artist: Eric Noltkamper
    in album: Reflections of Cleveland
      type: MusicAlbum
      date published: 1994-01-01
    genre: polka
    isrc code: USTC30787803
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
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      value: 2026-07-19T08:58:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3603389582c7362b70e2fac3f0295e46a857c2da8b00718344e334bb5928bf97
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958708
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC30787803
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T09:08:25Z
    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 0x3603389582c7362b70e2fac3f0295e46a857c2da8b00718344e334bb5928bf97. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USTC30787803.
      date published: 2026-07-19T09:08:25Z
    audio: Waterloo Polka
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.689
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.757
      additional property: Energy
        type: PropertyValue
        value: 0.493
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      additional property: Acousticness
        type: PropertyValue
        value: 0.057
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.629
      additional property: Liveness
        type: PropertyValue
        value: 0.057
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.836
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: The Sidemen-Busting Out
album: It's A Force of Habat with Eric Noltkamper
album: A Merry Christmas Wish!
album: I Don't Wanna Mambo!
album: The Eric Noltkamper Button Box Collection
album: Rosy Cheeks
album: Studio To Stage
album: Our Pope Polka - Single
album: Eric Noltkamper Plays Polkas & Waltzes for Ladies Only!
album: At the Hofbrauhaus
album: Pizza Night Music

Loudness (dB)
type: PropertyValue
value: -13.491

Key Name
type: PropertyValue
value: Bb

Mode Name
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value: Major

The Sidemen-Busting Out
type: MusicAlbum
date published: 1997-01-01

It's A Force of Habat with Eric Noltkamper
type: MusicAlbum
date published: 1999-11-01

A Merry Christmas Wish!
type: MusicAlbum
date published: 2001

I Don't Wanna Mambo!
type: MusicAlbum
date published: 2002

The Eric Noltkamper Button Box Collection
type: MusicAlbum
date published: 2002-01-01
track: Toy Soldier Polka
  type: MusicRecording
  duration: PT2M29S
  duration ms: 149185
  explicit: false
  by artist: Eric Noltkamper
  in album: The Eric Noltkamper Button Box Collection
    type: MusicAlbum
    date published: 2002-01-01
  genre: polka
  isrc code: USTC30777496
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-03T18:48:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x41394683a7ba3dc62c783d4764afe8e6883e1c80059ed04a99c83da16fc10ca8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTC30777496
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x41394683a7ba3dc62c783d4764afe8e6883e1c80059ed04a99c83da16fc10ca8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTC30777496.
    date published: 2026-07-03T19:59:51Z
  audio: Toy Soldier Polka
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.219
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.925
    additional property: Energy
      type: PropertyValue
      value: 0.295
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0.225
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.26
    additional property: Liveness
      type: PropertyValue
      value: 0.032
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.973
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.621
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Rosy Cheeks
type: MusicAlbum
date published: 2004-01-01

Studio To Stage
type: MusicAlbum
date published: 2007-10-02

Our Pope Polka - Single
type: MusicAlbum
date published: 2013-04-13

Eric Noltkamper Plays Polkas & Waltzes for Ladies Only!
type: MusicAlbum
date published: 2014-04-01

At the Hofbrauhaus
type: MusicAlbum
date published: 2019-07-01

Pizza Night Music
type: MusicAlbum
date published: 2020-05-23