Jack T. Kline
type: MusicGroup
popularity: 4
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x39bbef5a6355fac93e5913c5a21dff4611dc888552e102a9ffd11ba03b954227
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bbef5a6355fac93e5913c5a21dff4611dc888552e102a9ffd11ba03b954227. 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/b050474a-a3c1-4eb6-9da8-1b4a178ac358.json and https://artists.proofprofile.net/proofs/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x39bbef5a6355fac93e5913c5a21dff4611dc888552e102a9ffd11ba03b954227","name":"Jack T. Kline","registered_at":"2026-06-20T11:32:10Z","symbol":"NIM1605621","token_address":"0x8bdc60becf2aa05c934b68868c72989e3bdc7e86","type":"artist","uuid":"b050474a-a3c1-4eb6-9da8-1b4a178ac358"}
album: Great Orchestral Transcriptions for Band
  type: MusicAlbum
  date published: 2013-08-06
  track: Carnival, Op. 92, B. 169 (arr. H. Clarke for wind ensemble)
    type: MusicRecording
    duration: PT9M30S
    duration ms: 570093
    explicit: false
    by artist: Herbert Clarke
    by artist: Antonín Dvořák
    by artist: United States Navy Band
    by artist: Ralph M. Gambone
    in album: Great Orchestral Transcriptions for Band
      type: MusicAlbum
      date published: 2013-08-06
    isrc code: USA5R1398506
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1398506
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xe2d2f05127c4a8b2337904323a9999c0c93498bff757ca6dc1199005e6567377. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1398506.
      date published: 2026-07-08T03:20:19Z
    audio: Carnival, Op. 92, B. 169 (arr. H. Clarke for wind ensemble)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.235
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
        value: 0.184
      additional property: Speechiness
        type: PropertyValue
        value: 0.04
      additional property: Acousticness
        type: PropertyValue
        value: 0.943
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.58
      additional property: Liveness
        type: PropertyValue
        value: 0.205
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.072
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.353
      additional property: Key Name
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album: Bicentennial Collection
  type: MusicAlbum
  date published: 2008-09-02
album: 25 Orchestral Masterworks for Band
  type: MusicAlbum
  date published: 2014-07-08
  track: La forza del destino (arr. M.L. Lake for wind ensemble)
    type: MusicRecording
    duration: PT7M34S
    duration ms: 454746
    explicit: false
    by artist: Giuseppe Verdi
    by artist: M. L. Lake
    by artist: United States Navy Band
    in album: 25 Orchestral Masterworks for Band
      type: MusicAlbum
      date published: 2014-07-08
    genre: classical
    genre: opera
    isrc code: USA5R1430307
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T03:44:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xce3926522db16e3a6b02eef78dec290c550eed6dbcb6220214f029f7d23946da
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1430307
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0xce3926522db16e3a6b02eef78dec290c550eed6dbcb6220214f029f7d23946da. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1430307.
      date published: 2026-07-08T03:20:19Z
    audio: La forza del destino (arr. M.L. Lake for wind ensemble)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.332
      additional property: Musical Key
        type: PropertyValue
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      additional property: Mode (Major/Minor)
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        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
        value: 0.112
      additional property: Speechiness
        type: PropertyValue
        value: 0.052
      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
  track: Candide: Overture (arr. C. Grundman for wind ensemble)
album: 25 Famous Marches, Vol. 3
album: American Classics for Veterans Day
album: American Classics for President's Day
album: More Famous Marches
album: Sousa: Deep Cuts, Vol. 3
album: Sousa: Deep Cuts, Vol. 2
album: The Heritage of John Philip Sousa, Vol. 9
album: The Heritage of John Philip Sousa, Vol. 8
album: The Heritage of John Philip Sousa, Vol. 7
album: The Heritage of John Philip Sousa, Vol. 6
album: The Heritage of John Philip Sousa, Vol. 5
album: The Heritage of John Philip Sousa, Vol. 4
album: The Heritage of John Philip Sousa, Vol. 3
album: The Heritage of John Philip Sousa, Vol. 2
album: The Heritage of John Philip Sousa, Vol. 1
album: A Lincoln Celebration
album: The Bicentennial Collection, Vol. 6: Jack T. Kline and John R. Bourgeois

Acousticness
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value: 0.958

Instrumentalness
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value: 0.811

Liveness
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value: 0.059

Valence (Positivity)
type: PropertyValue
value: 0.059

Loudness (dB)
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value: -22.25

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

Candide: Overture (arr. C. Grundman for wind ensemble)
type: MusicRecording
duration: PT4M22S
duration ms: 262293
explicit: false
by artist: Leonard Bernstein
by artist: Clare Grundman
by artist: United States Marine Band
in album: 25 Orchestral Masterworks for Band
  type: MusicAlbum
  date published: 2014-07-08
genre: classical
genre: orchestra
isrc code: USA5R1430322
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T13:01:26+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xe3b9a0be21d72d282ac22c6994670c5893d7429507bb75b5a0f5393fc928934a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1430322
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0xe3b9a0be21d72d282ac22c6994670c5893d7429507bb75b5a0f5393fc928934a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1430322.
  date published: 2026-07-08T03:20:19Z
audio: Candide: Overture (arr. C. Grundman for wind ensemble)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 149.965
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.365
  additional property: Energy
    type: PropertyValue
    value: 0.174
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.951
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.463
  additional property: Liveness
    type: PropertyValue
    value: 0.161
  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.994
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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25 Famous Marches, Vol. 3
type: MusicAlbum
date published: 2012-06-05

American Classics for Veterans Day
type: MusicAlbum
date published: 2014-10-14
track: Amazing Grace
  type: MusicRecording
  duration: PT4M4S
  duration ms: 244493
  explicit: false
  by artist: Traditional
  by artist: United States Air Force Reserve Pipe Band
  in album: American Classics for Veterans Day
    type: MusicAlbum
    date published: 2014-10-14
  genre: bhajan
  genre: gregorian-chant
  genre: medieval
  genre: traditional-music
  isrc code: USA5R1430845
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T17:38:45+00:00
  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959159
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1430845
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T17:48:40Z
  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 0x68ca92adbb2e342bfbda5ccd20921b766e76179e4129b71e3052f460b7c77330. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA5R1430845.
    date published: 2026-07-22T17:48:40Z
  audio: Amazing Grace
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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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: Key Name
      type: PropertyValue
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    additional property: Mode Name
      type: PropertyValue
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American Classics for President's Day
type: MusicAlbum
date published: 2015-02-10
track: God Bless America
  type: MusicRecording
  duration: PT2M4S
  duration ms: 124133
  explicit: false
  by artist: Irving Berlin
  by artist: United States Marine Band
  by artist: Timothy W. Foley
  in album: American Classics for President's Day
    type: MusicAlbum
    date published: 2015-02-10
  popularity: 3
  genre: tin-pan-alley
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T17:46:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x478e3443406d1df327f5e7f36eee962e608dd9e8f8042acfbe3a420f961a9fee
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960291
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA5R1530926
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T18:23:33Z
  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 0x478e3443406d1df327f5e7f36eee962e608dd9e8f8042acfbe3a420f961a9fee. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA5R1530926.
    date published: 2026-07-30T18:23:33Z
  audio: God Bless America
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.343
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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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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track: The Stars and Stripes Forever
  type: MusicRecording
  duration: PT3M17S
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  by artist: United States Marine Band
  by artist: Albert F. Schoepper
  in album: American Classics for President's Day
    type: MusicAlbum
    date published: 2015-02-10
  popularity: 1
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    date published: 2026-07-31T17:29:52Z
  audio: The Stars and Stripes Forever
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More Famous Marches
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date published: 2015-03-10

Sousa: Deep Cuts, Vol. 3
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Sousa: Deep Cuts, Vol. 2
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The Heritage of John Philip Sousa, Vol. 9
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date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 8
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date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 7
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date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 6
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date published: 2011-09-06
track: The Quilting Party
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  by artist: United States Marine Band
  by artist: Jack T. Kline
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    date published: 2026-07-30T21:35:24Z
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The Heritage of John Philip Sousa, Vol. 5
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date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 4
type: MusicAlbum
date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 3
type: MusicAlbum
date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 2
type: MusicAlbum
date published: 2011-09-06

The Heritage of John Philip Sousa, Vol. 1
type: MusicAlbum
date published: 2011-09-06

A Lincoln Celebration
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date published: 2015-04-14
track: Shenandoah (arr. J. Erb for choir)
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  by artist: James Erb
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  by artist: Lowell Graham
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    date published: 2015-04-14
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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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    date published: 2026-07-08T03:20:19Z
  audio: Shenandoah (arr. J. Erb for choir)
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track: Yankee Doodle
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790a301e78e50ca78636564ff622027b87b5dc520e59215295311234e844550. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA5R1550219.
    date published: 2026-07-02T03:30:09Z
  audio: Yankee Doodle
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The Bicentennial Collection, Vol. 6: Jack T. Kline and John R. Bourgeois
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