Irving Kaufman
type: MusicGroup
genre: ragtime
description: Irving Robert Kaufman (June 24, 1910 – February 1, 1992) was a United States federal judge, first on the U.S. District Court for the Southern District of New York, and then on the U.S. Court of Appeal
popularity: 12
followers: 616
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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 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: 2026-06-15T02:33:01Z
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album: Are You from Dixie?
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  date published: 1913-12-25
  track: Masculine Women! Feminine Men!
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      type: MusicAlbum
      date published: 1913-12-25
    genre: ragtime
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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: 2026-07-03T10:47:44Z
    audio: Masculine Women! Feminine Men!
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album: Presenting Irving Kaufman
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  date published: 1914-06-03
  track: Masculine Women! Feminine Men!
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    genre: ragtime
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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: 2026-07-02T16:51:38Z
    audio: Masculine Women! Feminine Men!
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album: Hail! Hail! The Gang’s All Here
album: Don't Cry Little Girl, Don't Cry
album: Ten Little Fingers and Ten Little Toes (Down in Tennessee)
album: Little Rover
album: So I Took The $50000
album: If I Knew You Then As I Know You Now
album: (You're in Kentucky) Sure As You're Born
album: Just a Girl that Men Forget
album: Bring Back Those Rock-a-Bye Baby Days
album: Collection Vol. 2
album: Bygones
album: Collection
album: Tonight You Belong to Me
album: Always
album: At Sundown
album: Lonesome and Sorry
album: Dusky Stevedore
album: The Song is Ended
album: Greatest Hits
album: Chong (He Come from Hong Kong)
track: Masculine Women! Feminine Men!
track: Kiss and Make Up
track: Nagasaki
track: Lucky Lindy
track: A Precious Little Thing Called Love

Liveness
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value: 0.469

Valence (Positivity)
type: PropertyValue
value: 0.909

Loudness (dB)
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value: -9.988

Key Name
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value: D

Mode Name
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value: Major

Hail! Hail! The Gang’s All Here
type: MusicAlbum
date published: 1917-04-16

Don't Cry Little Girl, Don't Cry
type: MusicAlbum
date published: 1919-09-17

Ten Little Fingers and Ten Little Toes (Down in Tennessee)
type: MusicAlbum
date published: 1921-01-18

Little Rover
type: MusicAlbum
date published: 1923-04-30

So I Took The $50000
type: MusicAlbum
date published: 1923-09-03

If I Knew You Then As I Know You Now
type: MusicAlbum
date published: 1923-09-19

(You're in Kentucky) Sure As You're Born
type: MusicAlbum
date published: 1923-10-17

Just a Girl that Men Forget
type: MusicAlbum
date published: 1923-10-17

Bring Back Those Rock-a-Bye Baby Days
type: MusicAlbum
date published: 1924-04-30

Collection Vol. 2
type: MusicAlbum
date published: 1924-06-26

Bygones
type: MusicAlbum
date published: 1925-03-24

Collection
type: MusicAlbum
date published: 1926

Tonight You Belong to Me
type: MusicAlbum
date published: 1926-01-18

Tonight You Belong to Me
type: MusicAlbum
date published: 1926-04-28

Always
type: MusicAlbum
date published: 1926-06-24

At Sundown
type: MusicAlbum
date published: 1927

Collection
type: MusicAlbum
date published: 1927

Lonesome and Sorry
type: MusicAlbum
date published: 1927

Dusky Stevedore
type: MusicAlbum
date published: 1928

The Song is Ended
type: MusicAlbum
date published: 1928-01-18

Greatest Hits
type: MusicAlbum
date published: 2016-07-18

Chong (He Come from Hong Kong)
type: MusicAlbum
date published: 2021-06-14

Masculine Women! Feminine Men!
type: MusicRecording
duration: PT2M59S
duration ms: 179573
explicit: false
by artist: Irving Kaufman
in album: Wonderful Nonsense: Fun Songs of the Roaring Twenties
  type: MusicAlbum
  date published: 2018-01-19
isrc code: TCADL1870125
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1ae4327dd10628c7075ee862551614221ddc6c27e44d37de076077baae2d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADL1870125.
  date published: 2026-07-02T03:55:08Z
audio: Masculine Women! Feminine Men!
  type: AudioObject
  additional property: Tempo (BPM)
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Kiss and Make Up
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duration: PT2M50S
duration ms: 170493
explicit: false
by artist: Vincent Lopez and his Orchestra
by artist: Irving Kaufman
in album: The Naughty 1920s: Red Hot & Risque Songs of the Jazz Age, Vol. 2
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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: Kiss and Make Up
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Nagasaki
type: MusicRecording
duration: PT3M1S
duration ms: 181160
explicit: false
by artist: Ipana Troubadours
by artist: Sam Lanin
by artist: Irving Kaufman
in album: The Big Broadcast, Vol. 10: Jazz and Popular Music of the 1920s and 1930s
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  date published: 2015-04-21
genre: vintage-jazz
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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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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 0xb4c38807bdd290f8e39d2d72ed345b12cd889427242350c36c15e5c5e62b8754. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM4TW1514096.
  date published: 2026-07-31T15:20:15Z
audio: Nagasaki
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Lucky Lindy
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  value: 960500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960500
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXTG1100818
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:13:03Z
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 0x2c617659e083ee920ecac29934f4a96a9b27eda494d74ad9c59bdc215858fc56. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USXTG1100818.
  date published: 2026-08-01T03:13:03Z
audio: Lucky Lindy
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.39
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.766
  additional property: Energy
    type: PropertyValue
    value: 0.416
  additional property: Speechiness
    type: PropertyValue
    value: 0.133
  additional property: Acousticness
    type: PropertyValue
    value: 0.938
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.424
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.689
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.58
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

A Precious Little Thing Called Love
type: MusicRecording
duration: PT2M55S
duration ms: 175844
explicit: false
by artist: Irving Kaufman
in album: Echoes from the 1920s
  type: MusicAlbum
  date published: 2011-06-25
isrc code: USXTG1100827
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T13:28:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ba64cfcbc284ffc9e88db85c70b94299ce2885016034d3424e026ad8ac83620
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960410
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960410
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXTG1100827
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:50:38Z
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 0x1ba64cfcbc284ffc9e88db85c70b94299ce2885016034d3424e026ad8ac83620. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USXTG1100827.
  date published: 2026-07-31T13:50:38Z
audio: A Precious Little Thing Called Love
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 132.375
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.468
  additional property: Energy
    type: PropertyValue
    value: 0.147
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.953
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.314
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.671
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.03
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major