Jack McDuff
type: MusicGroup
genre: acid jazz
genre: hard bop
genre: jazz
genre: jazz funk
genre: soul jazz
description: Eugene McDuffy (September 17, 1926 – January 23, 2001), known professionally as "Brother" Jack McDuff or "Captain" Jack McDuff, was an American jazz organist and organ trio bandleader. He was most pro
popularity: 32
followers: 26754
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e99fbd3d6f208fea5ff7ca8bfbde1807f1d569fc7350bb91996560dfe1abc0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0cc409fb-ea32-412c-89db-4697d44822a6.json and https://artists.proofprofile.net/proofs/artist/0cc409fb-ea32-412c-89db-4697d44822a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Tough 'Duff
  type: MusicAlbum
  date published: 1960
album: Tough 'Duff
  type: MusicAlbum
  date published: 1960-07-12
album: The Honeydripper
  type: MusicAlbum
  date published: 1961
album: Brother Jack Meets The Boss
  type: MusicAlbum
  date published: 1962-01-01
album: A Change Is Gonna Come
  type: MusicAlbum
  date published: 1966-01-01
album: Do It Now
  type: MusicAlbum
  date published: 1967-01-01
album: Tobacco Road
  type: MusicAlbum
  date published: 1967-01-01
  track: Teardrops from My Eyes
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    by artist: Jack McDuff
    in album: Tobacco Road
      type: MusicAlbum
      date published: 1967-01-01
    genre: acid jazz
    genre: hard bop
    genre: jazz
    genre: jazz funk
    genre: soul jazz
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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
    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-06T01:25:57Z
    audio: Teardrops from My Eyes
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  track: Tobacco Road
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    by artist: Jack McDuff
    in album: Tobacco Road
      type: MusicAlbum
      date published: 1967-01-01
    genre: acid jazz
    genre: hard bop
    genre: jazz
    genre: jazz funk
    genre: soul jazz
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43122aac46de49f498d5832750ce95a22804f8674885f9fb34ec3b98cdc001f4. 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/USAT20109486.
      date published: 2026-07-05T19:27:56Z
    audio: Tobacco Road
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  track: Can't Get Satisfied
  track: Wade in the Water
album: Double Barrelled Soul
album: Moon Rappin'
album: Gin And Orange
album: Who Knows What Tomorrow's Gonna Bring?
album: Sophisticated Funk
album: Live It Up
album: The Re-Entry
album: Another Real Good'Un
album: Crash!
album: It's About Time
album: Screamin'
album: Down Home Style
album: Bringin' It Home
album: Legends Of Acid Jazz: Brother Jack
album: Live At Newark
album: The Prestige Years (Remastered)
album: The Prestige Years
album: The Honeydripper (Rudy Van Gelder Remaster)
album: Somethin' Slick!
album: Rhino Hi-Five: Brother Jack McDuff
album: Jazz at Midnight
album: Jack-Pot
album: Brother Jack + Tough 'Duff
album: The Very Best of Jack McDuff
album: The Very Best Of Jack McDuff
album: Grease & Groove
album: Brother Jack Meets The Boss / Screamin'
album: Brother Jack Meets the Boss
album: Goodnight, It's Time to Go
album: Glide On
album: Brother Jack
album: Twisting the Jug
album: Soulful Drums
album: Drowsy
album: The Last Goodun'
album: Scream Out Loud
album: Anthology
album: Opulent Event
album: After Hours
album: Noon Train
album: Sweet Valentine's Jazz
album: Blues and Tonic
album: Mr. Wonderful
album: Greatest Hits
album: In Jazz We Trust (Digitally Remastered)
album: A Life In Jazz - Jack McDuff
album: Lifeworks - Jack McDuff (The Platinum Edition)
album: The JAZZ Masters - Jack McDuff
track: Moon Rappin'
track: Butter (For Yo' Popcorn)
track: Hunk O' Funk
track: Going to Chicago Blues

Pork Chops & Pasta
type: MusicRecording
duration: PT7M15S
duration ms: 435000
explicit: false
by artist: Jack McDuff
in album: It's About Time
  type: MusicAlbum
  date published: 1996-01-01
genre: acid jazz
genre: hard bop
genre: jazz
genre: jazz funk
genre: soul jazz
isrc code: USC4R0301876
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC4R0301876
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519c29cbeaa83f2ad5bd44a39af7abecd6ee229ce5bc448f5c0bea18c3bdf958. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USC4R0301876.
  date published: 2026-07-08T03:53:27Z
audio: Pork Chops & Pasta
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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
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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Rock Candy
type: MusicRecording
duration: PT9M16S
duration ms: 556240
explicit: false
by artist: Jack McDuff
in album: It's About Time
  type: MusicAlbum
  date published: 1996-01-01
genre: acid jazz
genre: hard bop
genre: jazz
genre: jazz funk
genre: soul jazz
isrc code: USC4R0301882
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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  value: 2026-07-06T22:42:28+00:00
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additional property: OTSHash
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  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35726da122c302b1e6b6fb782db510f4c0d87fadf2fd29fbbce43ec42c5a6783. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USC4R0301882.
  date published: 2026-07-08T03:53:27Z
audio: Rock Candy
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  additional property: Time Signature
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    value: 5
  additional property: Danceability
    type: PropertyValue
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    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Key Name
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Moon Rappin'
type: MusicRecording
duration: PT6M20S
duration ms: 380093
explicit: false
by artist: Jack McDuff
in album: Blue Break Beats Vol. 5
  type: MusicAlbum
  date published: 2018-03-09
popularity: 2
isrc code: USBN20200075
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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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/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN20200075
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ecabc611701c84e37291085347cc2f5d4288e3c87ba032c92b72fa70882117. 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/USBN20200075.
  date published: 2026-07-08T03:20:19Z
audio: Moon Rappin'
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  additional property: Key Name
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Butter (For Yo' Popcorn)
type: MusicRecording
duration: PT3M7S
duration ms: 187933
explicit: false
by artist: Jack McDuff
in album: Blue Note Trip 8: Swing Low/Fly High
  type: MusicAlbum
  date published: 2009-01-01
isrc code: USBN29701067
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac552769b25460d7b4d0de392b8a943560f9d11dc8063380bed0d97ccc1fff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBN29701067.
  date published: 2026-07-02T11:38:34Z
audio: Butter (For Yo' Popcorn)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.769
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.743
  additional property: Energy
    type: PropertyValue
    value: 0.67
  additional property: Speechiness
    type: PropertyValue
    value: 0.07
  additional property: Acousticness
    type: PropertyValue
    value: 0.004
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.907
  additional property: Liveness
    type: PropertyValue
    value: 0.046
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.824
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.541
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Hunk O' Funk
type: MusicRecording
duration: PT6M2S
duration ms: 362933
explicit: false
by artist: Jack McDuff
in album: Blue Funk (Remastered)
  type: MusicAlbum
  date published: 2001-01-01
isrc code: USBN29500442
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T18:13:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7cc78db7bc17c869cdf72f9675fb0d1faac3503fffb6037dbd2aa71181a64cd2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN29500442
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc78db7bc17c869cdf72f9675fb0d1faac3503fffb6037dbd2aa71181a64cd2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USBN29500442.
  date published: 2026-06-13T15:41:10Z
audio: Hunk O' Funk
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 167.959
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.471
  additional property: Energy
    type: PropertyValue
    value: 0.437
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.345
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.836
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.805
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.902
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Going to Chicago Blues
type: MusicRecording
duration: PT4M50S
duration ms: 290653
explicit: false
by artist: Joe Williams
by artist: James 'Red' Holloway
by artist: Phil Upchurch
by artist: Ray Brown
by artist: Jack McDuff
by artist: Gerryck King
in album: 40 Tracks for 40 Years: Delos' 40th Anniversary Celebration!
  type: MusicAlbum
  date published: 2013-04-02
popularity: 0
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba81136bb850c93ee414fcd82543d1a3230a645e10429b42576d4003e0acfa4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USASX1344023.
  date published: 2026-07-31T21:25:57Z
audio: Going to Chicago Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.612
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.572
  additional property: Energy
    type: PropertyValue
    value: 0.23
  additional property: Speechiness
    type: PropertyValue
    value: 0.087
  additional property: Acousticness
    type: PropertyValue
    value: 0.713
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.057
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.378
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.546
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: USASX1344023
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960468
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T21:25:57+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASX1344023
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57+00:00
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

Tempo (BPM)
type: PropertyValue
value: 104.384

Musical Key
type: PropertyValue
value: 5

Mode (Major/Minor)
type: PropertyValue
value: 0

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.684

Energy
type: PropertyValue
value: 0.168

Speechiness
type: PropertyValue
value: 0.09

Acousticness
type: PropertyValue
value: 0.084

Instrumentalness
type: PropertyValue
value: 0.802

Liveness
type: PropertyValue
value: 0.102

Valence (Positivity)
type: PropertyValue
value: 0.43

Loudness (dB)
type: PropertyValue
value: -16.484

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor

Can't Get Satisfied
type: MusicRecording
duration: PT5M9S
duration ms: 309466
explicit: false
by artist: Jack McDuff
in album: Tobacco Road
  type: MusicAlbum
  date published: 1967-01-01
genre: acid jazz
genre: hard bop
genre: jazz
genre: jazz funk
genre: soul jazz
isrc code: USAT20109488
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T22:34:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc31de1736c305e64337983c28e0aaec34c9e91c650cb9f46d115f168823ec55
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958690
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958690
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAT20109488
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:14:39Z
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 0xcc31de1736c305e64337983c28e0aaec34c9e91c650cb9f46d115f168823ec55. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USAT20109488.
  date published: 2026-07-19T07:14:39Z
audio: Can't Get Satisfied
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.264
  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: 0.803
  additional property: Energy
    type: PropertyValue
    value: 0.431
  additional property: Speechiness
    type: PropertyValue
    value: 0.116
  additional property: Acousticness
    type: PropertyValue
    value: 0.003
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.051
  additional property: Liveness
    type: PropertyValue
    value: 0.049
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.827
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.063
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Wade in the Water
type: MusicRecording
duration: PT4M33S
duration ms: 273946
explicit: false
by artist: Jack McDuff
in album: Tobacco Road
  type: MusicAlbum
  date published: 1967-01-01
genre: acid jazz
genre: hard bop
genre: jazz
genre: jazz funk
genre: soul jazz
isrc code: USAT20109493
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T02:37:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea00de6d10d6d9a5447e6987699ce01d19b5e0b2cbdeae7b28ad1b602aa96b5c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958808
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958808
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAT20109493
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-20T05:39:27Z
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 0xea00de6d10d6d9a5447e6987699ce01d19b5e0b2cbdeae7b28ad1b602aa96b5c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:27Z), 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/USAT20109493.
  date published: 2026-07-20T05:39:27Z
audio: Wade in the Water
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.121
  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: 0.607
  additional property: Energy
    type: PropertyValue
    value: 0.486
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.024
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.096
  additional property: Liveness
    type: PropertyValue
    value: 0.447
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.638
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.821
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Double Barrelled Soul
type: MusicAlbum
date published: 1968-01-01

Moon Rappin'
type: MusicAlbum
date published: 1969
track: Flat Backin'
  type: MusicRecording
  duration: PT10M23S
  duration ms: 623026
  explicit: false
  by artist: Jack McDuff
  in album: Moon Rappin'
    type: MusicAlbum
    date published: 1969
  genre: acid jazz
  genre: hard bop
  genre: jazz
  genre: jazz funk
  genre: soul jazz
  isrc code: USBN20200073
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T17:31:25+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe08aacbd481fe835f056c0a0adf934da69383f2cd182811fec037d69eb5678c0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958180
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958180
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN20200073
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T20:33:27Z
  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 0xe08aacbd481fe835f056c0a0adf934da69383f2cd182811fec037d69eb5678c0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:33:27Z), 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/USBN20200073.
    date published: 2026-07-15T20:33:27Z
  audio: Flat Backin'
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.415
    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: 0.511
    additional property: Energy
      type: PropertyValue
      value: 0.569
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.079
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.737
    additional property: Liveness
      type: PropertyValue
      value: 0.173
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.392
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.803
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Made In Sweden
  type: MusicRecording
  duration: PT7M37S
  duration ms: 457173
  explicit: false
  by artist: Jack McDuff
  in album: Moon Rappin'
    type: MusicAlbum
    date published: 1969
  genre: acid jazz
  genre: hard bop
  genre: jazz
  genre: jazz funk
  genre: soul jazz
  isrc code: USBN20200074
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T12:38:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x676839ec629ac53b0d2658b69c7350b8f2b7a390467729f89caa2807ba62d20d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958415
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958415
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN20200074
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-17T12:50:13Z
  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 0x676839ec629ac53b0d2658b69c7350b8f2b7a390467729f89caa2807ba62d20d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USBN20200074.
    date published: 2026-07-17T12:50:13Z
  audio: Made In Sweden
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 181.648
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.428
    additional property: Energy
      type: PropertyValue
      value: 0.703
    additional property: Speechiness
      type: PropertyValue
      value: 0.108
    additional property: Acousticness
      type: PropertyValue
      value: 0.002
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.793
    additional property: Liveness
      type: PropertyValue
      value: 0.084
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.509
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.127
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Loose Foot
  type: MusicRecording
  duration: PT5M3S
  duration ms: 303760
  explicit: false
  by artist: Jack McDuff
  in album: Moon Rappin'
    type: MusicAlbum
    date published: 1969
  genre: acid jazz
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OpenTimestamps Proof of Existence
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Gin And Orange
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Who Knows What Tomorrow's Gonna Bring?
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Who Knows What Tomorrow's Gonna Bring?
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OpenTimestamps Proof of Existence
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date published: 2026-07-05T19:27:56Z

Mannix Theme
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Live It Up
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The Re-Entry
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Another Real Good'Un
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Crash!
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Crash!
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The Honeydripper
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It's About Time
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It's About Time
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Screamin'
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Down Home Style
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Bringin' It Home
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Bringin' It Home
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Legends Of Acid Jazz: Brother Jack
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Live At Newark
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The Honeydripper
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The Prestige Years (Remastered)
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The Prestige Years
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Somethin' Slick!
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The Re-Entry
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Another Real Good'Un
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The Re-Entry
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Another Real Good'Un
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Jazz at Midnight
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Jack-Pot
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Brother Jack + Tough 'Duff
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The Very Best of Jack McDuff
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The Very Best Of Jack McDuff
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Grease & Groove
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Brother Jack Meets The Boss / Screamin'
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Brother Jack Meets the Boss
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The Honeydripper
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Goodnight, It's Time to Go
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Glide On
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Brother Jack
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Drowsy
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The Last Goodun'
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Anthology
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Opulent Event
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After Hours
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Noon Train
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Screamin'
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Soulful Drums
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Sweet Valentine's Jazz
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After Hours
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Blues and Tonic
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Mr. Wonderful
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Greatest Hits
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In Jazz We Trust (Digitally Remastered)
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The Very Best of Jack McDuff
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A Life In Jazz - Jack McDuff
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Lifeworks - Jack McDuff (The Platinum Edition)
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The JAZZ Masters - Jack McDuff
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Don't Worry Be Jazzy By Jack McDuff
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I Am Jack McDuff
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Jazz & Limousines by Jack McDuff
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JAZZY CITY - Club Session by Jack McDuff
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The Best Of Me - Jack McDuff
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Waterfront
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Last Christmas I Gave You My Heart (The Hit Collection)
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Merry Christmas with Jack McDuff [Remastered]
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Jack McDuff In Christmas Wonderland
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Holy Nights With Jack McDuff
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The Pink Panther
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The Soulful Drums of Joe Dukes
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A Kettle of Fish
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Mack N Duff
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Groovin'
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The Vinyl Masters: The Honeydripper
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At His Best
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Screaming
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Brother Jack Meets the Boss (Hd Remastered)
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Screamin'
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Soft Winds
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Soul Circle
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Tough ’Duff
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Brother Jack
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Together Again!
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Jack McDuff Meets Soul Tenors: Willis Jackson, Roland Kirk, Jimmy Forrest
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Jazz Ahead with Jack Mcduff
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Whap!
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After Hours in 1962 the Blues of Brother Jack McDuff
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The Classic Albums 1960-1963
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Music & Wine with Jack Mcduff
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Glamour Jazz Nights with Jack Mcduff
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Time to Go
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date published: 2021-06-11

Golden Hits (Remastered)
type: MusicAlbum
date published: 2021-07-30

Sanctified Samba (Live in New Jersey)
type: MusicAlbum
date published: 2021-07-30

Strollin'
type: MusicAlbum
date published: 2021-08-18

Giants of Jazz
type: MusicAlbum
date published: 2021-09-10

Feliz Navidad Y Próspero Año Nuevo De Jack Mcduff
type: MusicAlbum
date published: 2021-12-10

Walkin' The Dog / Untitled D Minor
type: MusicAlbum
date published: 2022-07-20

Blues in the Night / Another Real Goodun'
type: MusicAlbum
date published: 2022-08-10

Live at Parnell's
type: MusicAlbum
date published: 2022-09-02

Freres (Live)
type: MusicAlbum
date published: 2023-03-30

Blues 1 & 8
type: MusicAlbum
date published: 2024-04-19

Ain't No Sunshine (Live In Seattle)
type: MusicAlbum
date published: 2024-05-17

Silk and Soul
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