Jazz Orchestra of the Concertgebouw
type: MusicGroup
genre: big band
popularity: 16
followers: 2338
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e774adf50c4fde1cd2c1f0732cbf248ace000ecdfe13b497ad2e12faf516128
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:49:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1e774adf50c4fde1cd2c1f0732cbf248ace000ecdfe13b497ad2e12faf516128","name":"Jazz Orchestra of the Concertgebouw","registered_at":"2026-06-14T13:40:52Z","symbol":"NIM0470298","token_address":"0x0f561e5495fc736534f8be4e0a11894a67e5afd0","type":"artist","uuid":"581e6680-d3fc-49f6-93a8-32d1b13bc5e4"}
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e774adf50c4fde1cd2c1f0732cbf248ace000ecdfe13b497ad2e12faf516128. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.json and https://artists.proofprofile.net/proofs/artist/581e6680-d3fc-49f6-93a8-32d1b13bc5e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0x1e774adf50c4fde1cd2c1f0732cbf248ace000ecdfe13b497ad2e12faf516128","name":"Jazz Orchestra of the Concertgebouw","registered_at":"2026-06-14T13:40:52Z","symbol":"NIM0470298","token_address":"0x0f561e5495fc736534f8be4e0a11894a67e5afd0","type":"artist","uuid":"581e6680-d3fc-49f6-93a8-32d1b13bc5e4"}
album: Riffs 'n Rhythms (Live at the Bimhuis)
  type: MusicAlbum
  date published: 2008-01-25
album: Silk Rush (Dutch Series, Vol.2: The Music of Jesse van Ruller)
  type: MusicAlbum
  date published: 2009-02-06
  track: The Secret Champ
    type: MusicRecording
    duration: PT10M5S
    duration ms: 605213
    explicit: false
    by artist: Jazz Orchestra of the Concertgebouw
    in album: Silk Rush (Dutch Series, Vol.2: The Music of Jesse van Ruller)
      type: MusicAlbum
      date published: 2009-02-06
    genre: big band
    isrc code: NLBW60800009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6b495065674d56e294752ac335b7f74b2e4fa2e70dc8957a47c2be85eafd8277
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958905
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958905
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLBW60800009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T19:03:30Z
    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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b495065674d56e294752ac335b7f74b2e4fa2e70dc8957a47c2be85eafd8277. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:03:30Z), 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/NLBW60800009.
      date published: 2026-07-20T19:03:30Z
    audio: The Secret Champ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.889
      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: 0.548
      additional property: Energy
        type: PropertyValue
        value: 0.607
      additional property: Speechiness
        type: PropertyValue
        value: 0.164
      additional property: Acousticness
        type: PropertyValue
        value: 0.759
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.703
      additional property: Liveness
        type: PropertyValue
        value: 0.803
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.619
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.604
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Blues for the Date
  type: MusicAlbum
  date published: 2010-03-29
  track: It's Happening
    type: MusicRecording
    duration: PT7M57S
    duration ms: 477933
    explicit: false
    by artist: Jazz Orchestra of the Concertgebouw
    in album: Blues for the Date
      type: MusicAlbum
      date published: 2010-03-29
    genre: big band
    isrc code: NLB151000091
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T22:55:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1c20f7d3a03692b9f811c7c8a0cc0b0f3b2c9fca03e15a13f221abd401b6e3bf
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 958622
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958622
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151000091
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T22:58:55Z
    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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c20f7d3a03692b9f811c7c8a0cc0b0f3b2c9fca03e15a13f221abd401b6e3bf. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/NLB151000091.
      date published: 2026-07-18T22:58:55Z
    audio: It's Happening
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.483
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.497
      additional property: Energy
        type: PropertyValue
        value: 0.668
      additional property: Speechiness
        type: PropertyValue
        value: 0.065
      additional property: Acousticness
        type: PropertyValue
        value: 0.758
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.257
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: First Song
album: Scribblin'
album: Riffs 'n Rhythms (Live at The Bimhuis)
album: Silk Rush
album: Crossroads
album: I Didn't Know What Time It Was
album: Giant
album: The Jazz Influencers
album: 30 Jaar Sesjun (Live)
album: Old School
album: Threnody: The Music of Jim McNeely
album: Threnody
album: Stolen Moments (The Dutch Heritage Series)
album: If I Were A Bell (The Dutch Heritage Series)

Liveness
type: PropertyValue
value: 0.952

Valence (Positivity)
type: PropertyValue
value: 0.725

Loudness (dB)
type: PropertyValue
value: -12.221

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Minor

First Song
type: MusicRecording
duration: PT7M44S
duration ms: 464693
explicit: false
by artist: Jazz Orchestra of the Concertgebouw
in album: Blues for the Date
  type: MusicAlbum
  date published: 2010-03-29
genre: big band
isrc code: NLB151000093
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T00:33:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x279ac4620da62527fe0127ad127e2c2c1ca995ea706cfacaf04b70b5a0eec65f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958947
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLB151000093
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T03:35:25Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ac4620da62527fe0127ad127e2c2c1ca995ea706cfacaf04b70b5a0eec65f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:25Z), 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/NLB151000093.
  date published: 2026-07-21T03:35:25Z
audio: First Song
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.437
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.542
  additional property: Energy
    type: PropertyValue
    value: 0.601
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.735
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.19
  additional property: Liveness
    type: PropertyValue
    value: 0.887
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.468
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.402
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Scribblin'
type: MusicAlbum
date published: 2012-11-16
track: Black, Whiter & Brown
  type: MusicRecording
  duration: PT10M37S
  duration ms: 637053
  explicit: false
  by artist: Jazz Orchestra of the Concertgebouw
  in album: Scribblin'
    type: MusicAlbum
    date published: 2012-11-16
  genre: big band
  isrc code: NLKR91200001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T17:25:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe9811320f25aade9bdd7ef70a39059042c165e05a9e3e05fe7a17be7d8d53f30
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLKR91200001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9811320f25aade9bdd7ef70a39059042c165e05a9e3e05fe7a17be7d8d53f30. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLKR91200001.
    date published: 2026-07-05T19:27:56Z
  audio: Black, Whiter & Brown
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 127.592
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 1
    additional property: Danceability
      type: PropertyValue
      value: 0.514
    additional property: Energy
      type: PropertyValue
      value: 0.604
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.569
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.248
    additional property: Liveness
      type: PropertyValue
      value: 0.069
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.709
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.004
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: 1912 7th Avenue
  type: MusicRecording
  duration: PT9M2S
  duration ms: 542666
  explicit: false
  by artist: Jazz Orchestra of the Concertgebouw
  in album: Scribblin'
    type: MusicAlbum
    date published: 2012-11-16
  genre: big band
  isrc code: NLKR91200003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T06:47:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x78bd89c80c893c5c18bf51924daf68762e58605f72c764277a850700c25c8a4a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958544
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958544
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLKR91200003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T12:14:37Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bd89c80c893c5c18bf51924daf68762e58605f72c764277a850700c25c8a4a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NLKR91200003.
    date published: 2026-07-18T12:14:37Z
  audio: 1912 7th Avenue
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 89.911
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.589
    additional property: Energy
      type: PropertyValue
      value: 0.465
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.538
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.329
    additional property: Liveness
      type: PropertyValue
      value: 0.752
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.513
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.593
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Scribblin'
  type: MusicRecording
  duration: PT5M36S
  duration ms: 336613
  explicit: false
  by artist: Jazz Orchestra of the Concertgebouw
  in album: Scribblin'
    type: MusicAlbum
    date published: 2012-11-16
  genre: big band
  isrc code: NLKR91200006
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T14:33:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7b611e788af29b4bdb5d099e0cc17e2c47742bae846d7c7449d4673dd8a86f0a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Scribblin'
track: Baggydog

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLKR91200006

OTSTimestamp
type: PropertyValue
value: 2026-07-05T19:27:56Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b611e788af29b4bdb5d099e0cc17e2c47742bae846d7c7449d4673dd8a86f0a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLKR91200006.
date published: 2026-07-05T19:27:56Z

Scribblin'
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 105.223
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: 0.638
additional property: Energy
  type: PropertyValue
  value: 0.727
additional property: Speechiness
  type: PropertyValue
  value: 0.084
additional property: Acousticness
  type: PropertyValue
  value: 0.203
additional property: Instrumentalness
  type: PropertyValue
  value: 0.753
additional property: Liveness
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Riffs 'n Rhythms (Live at The Bimhuis)
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Silk Rush
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Crossroads
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I Didn't Know What Time It Was
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Crossroads
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Giant
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The Jazz Influencers
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The Jazz Influencers
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30 Jaar Sesjun (Live)
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Old School
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Threnody: The Music of Jim McNeely
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Threnody
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Stolen Moments (The Dutch Heritage Series)
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If I Were A Bell (The Dutch Heritage Series)
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