Marion Harris
type: MusicGroup
genre: ragtime
genre: vocal jazz
description: Marion Harris (born Mary Ellen Harrison; March 25, 1897 – April 23, 1944) was an American popular singer who was most successful in the late 1910s and the 1920s. She was the first widely-known white s
popularity: 20
followers: 4912
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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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album: I Ain’t Got Nobody
  type: MusicAlbum
  date published: 1916-04-20
album: Marion Harris
  type: MusicAlbum
  date published: 1916-12-17
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      type: MusicAlbum
      date published: 1916-12-17
    genre: ragtime
    genre: vocal jazz
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    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2288dfab8ad0cd73a13370783c7695cda0a14cfb146c4dae548c468365dda2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZZ52172308.
      date published: 2026-07-16T16:14:30Z
    audio: After You've Gone
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  track: Nobody's Sweetheart
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      type: MusicAlbum
      date published: 1916-12-17
    genre: ragtime
    genre: vocal jazz
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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: 2026-07-19T22:26:17Z
    audio: Nobody's Sweetheart
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  track: Nobody's Using It Now
  track: I'm a Jazz Vampire
  track: I'm Nobody's Baby
  track: Charleston Crazy
  track: Tea for Two
album: Marion Harris, Tea for Two & St Louis Blues
album: After You’ve Gone
album: A Good Man is Hard to Find
album: Take Me to the Land of Jazz
album: Sweet Mama
album: I Told You So
album: I'm Gonna Do it if I Like it
album: Collection
album: Fickle Flo
album: Haunting Blues
album: Somebody Loves Me
album: Charleston Charlie
album: Go, Emmaline
album: Ladies Jazz
album: The Blues Have Got Me
album: Tea For Two
album: Malinda Brown
album: The Very Best Of
album: 1916-1919 Master Recordings
album: The Artistry of Marion Harris 1924 - 1934
album: For Johnny and Me
album: A Good Man Is Hard to Find
album: Yankee
album: Classic 1920's Music, Vol. 4
album: Look for the Silver Lining
album: Paradise
album: Who Cares
album: Marion Harris (Brunswick 1) [Recorded 1922-1923] [Early Blues & Jazz Vocals]
album: Hits of Marion Harris
album: Paradise Blues
album: Essential Hits
album: Brunswick 2 (1920's Blues & Jazz Vocals) [Recorded 1923-1925]
album: Brunswick 3 (1920's Blues & Jazz Vocals) [Recorded 1925-1934]
album: Columbia 1 (1920's Jazz Vocals) [Recorded 1920-1921]
album: Columbia 2 (1920's Jazz Vocals) [Recorded 1921-1922]
album: Classic 1920's Music, Vol. 4 (Special Edition)
album: At Her Best
album: Golden Selection (Remastered)
album: I'm Nobody's Baby - Winter Jazz Music from Marion Harris
album: A Hundred Years Ago...
album: Early Century Queen
album: Baby, I Am Jazz - a Magical Summer with Marion Harris
album: Essential Classics, Vol. 1069: Marion Harris
track: There`ll Be Some Changes Made
track: When Alexander Takes His Ragtime Band to France
track: He's My Secret Passion
track: Spring Is Here Again
track: St. Louis Blues: The "St. Louis" Blues (Arr. C. Norman)
track: St. Louis Blues

There`ll Be Some Changes Made
type: MusicRecording
duration: PT3M2S
duration ms: 182067
explicit: false
by artist: Marion Harris
in album: Echoes from the 1920s
  type: MusicAlbum
  date published: 2011-06-25
isrc code: USXTG1100802
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additional property: OTSTimestamp
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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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e51da9e5c858dff4f2eb4ad5ee8dbbbad68356534fd9189b59b021e2b0fbf8. 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/USXTG1100802.
  date published: 2026-07-02T03:55:08Z
audio: There`ll Be Some Changes Made
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When Alexander Takes His Ragtime Band to France
type: MusicRecording
duration: PT3M11S
duration ms: 191066
explicit: false
by artist: Marion Harris
in album: Songs of WW1
  type: MusicAlbum
  date published: 2018-01-19
popularity: 10
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-22T11:35:32Z
audio: When Alexander Takes His Ragtime Band to France
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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

There`ll Be Some Changes Made
type: MusicRecording
duration: PT3M2S
duration ms: 182067
explicit: false
by artist: Marion Harris
in album: 50 Roaring Songs of 1920s
  type: MusicAlbum
  date published: 2018-11-04
popularity: 2
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T03:35:13Z
audio: There`ll Be Some Changes Made
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additional property: OTSTimestamp
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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

He's My Secret Passion
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duration: PT3M11S
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by artist: Marion Harris
in album: The First Torch Singers, Vol. 2: 1930 - 1934
  type: MusicAlbum
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popularity: 2
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: He's My Secret Passion
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    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USXTG1100185
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: 960264
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T14:36:16+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USXTG1100185
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960264
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16+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

Spring Is Here Again
type: MusicRecording
duration: PT3M9S
duration ms: 189146
explicit: false
by artist: Marion Harris
in album: The Big Broadcast, Volume 6: Jazz and Popular Music of the 1920s and 1930s
  type: MusicAlbum
  date published: 2011-05-17
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66273af243900a8fd461cc4273c707e0c9260afd214f9f221e56ebb0032564e5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USV351316620.
  date published: 2026-07-30T17:23:26Z
audio: Spring Is Here Again
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.155
  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: 0.556
  additional property: Energy
    type: PropertyValue
    value: 0.124
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.156
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.318
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.404
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USV351316620
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: 960284
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T17:23:26+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV351316620
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960284
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960284
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26+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

St. Louis Blues: The "St. Louis" Blues (Arr. C. Norman)
type: MusicRecording
duration: PT3M4S
duration ms: 184866
explicit: false
by artist: W.C. Handy
by artist: Marion Harris
by artist: Charles A. Prince Orchestra
in album: Hits Of The 1920S, Vol. 1 (1920): Whispering
  type: MusicAlbum
  date published: 2002-09-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdedd01e9e2c3cfba36d164d91e560d3e460b829693c4898b0ed91d7d862264. 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/HKI190216109.
  date published: 2026-07-31T15:20:15Z
audio: St. Louis Blues: The "St. Louis" Blues (Arr. C. Norman)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.035
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.351
  additional property: Energy
    type: PropertyValue
    value: 0.238
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.363
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.196
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HKI190216109
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: 960418
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T15:20:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190216109
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15+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

St. Louis Blues
type: MusicRecording
duration: PT3M4S
duration ms: 184360
explicit: false
by artist: Marion Harris
in album: Top Hits Of The Roaring '20s
  type: MusicAlbum
  date published: 2008-06-01
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b1612db12ff856c6256fb778cbfe367009dedc75d40394cd775755500af8d8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USA560804968.
  date published: 2026-07-31T08:26:41Z
audio: St. Louis Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.819
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.492
  additional property: Energy
    type: PropertyValue
    value: 0.034
  additional property: Speechiness
    type: PropertyValue
    value: 0.087
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.467
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.185
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USA560804968
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: 960368
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T08:26:41+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560804968
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960368
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41+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

Instrumentalness
type: PropertyValue
value: 0.205

Liveness
type: PropertyValue
value: 0.187

Valence (Positivity)
type: PropertyValue
value: 0.299

Loudness (dB)
type: PropertyValue
value: -11.849

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

Nobody's Using It Now
type: MusicRecording
duration: PT2M50S
duration ms: 170520
explicit: false
by artist: Marion Harris
in album: Marion Harris
  type: MusicAlbum
  date published: 1916-12-17
genre: ragtime
genre: vocal jazz
isrc code: DEZZ52172311
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T22:15:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6053cfe71375749af88fd572d3526e011fb89c05a79b3b05d8912441d5b2dfbd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958943
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958943
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ52172311
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T00:27:37Z
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 0x6053cfe71375749af88fd572d3526e011fb89c05a79b3b05d8912441d5b2dfbd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZZ52172311.
  date published: 2026-07-21T00:27:37Z
audio: Nobody's Using It Now
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 79.104
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.38
  additional property: Energy
    type: PropertyValue
    value: 0.178
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.857
  additional property: Liveness
    type: PropertyValue
    value: 0.117
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.341
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.913
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

I'm a Jazz Vampire
type: MusicRecording
duration: PT3M8S
duration ms: 188560
explicit: false
by artist: Marion Harris
in album: Marion Harris
  type: MusicAlbum
  date published: 1916-12-17
genre: ragtime
genre: vocal jazz
isrc code: DEZZ52172312
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-20T22:35:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcb6172da648dbcddf0e8af51db60e8cc57f6d48ec81cf5ab9130f1eec1a6a8f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958942
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958942
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ52172312
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T01:37:23Z
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 0xcb6172da648dbcddf0e8af51db60e8cc57f6d48ec81cf5ab9130f1eec1a6a8f6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:37:23Z), 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/DEZZ52172312.
  date published: 2026-07-21T01:37:23Z
audio: I'm a Jazz Vampire
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 76.25
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.681
  additional property: Energy
    type: PropertyValue
    value: 0.08
  additional property: Speechiness
    type: PropertyValue
    value: 0.133
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.051
  additional property: Liveness
    type: PropertyValue
    value: 0.375
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.632
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.423
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

I'm Nobody's Baby
type: MusicRecording
duration: PT3M16S
duration ms: 196586
explicit: false
by artist: Marion Harris
in album: Marion Harris
  type: MusicAlbum
  date published: 1916-12-17
genre: ragtime
genre: vocal jazz
isrc code: DEZZ52172316
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-19T07:25:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x011cbf3d664c099282ea34a787b9fc9638a39fc66f1f636e559da8c7c89759db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958695
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958695
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ52172316
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-19T07:37:00Z
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 0x011cbf3d664c099282ea34a787b9fc9638a39fc66f1f636e559da8c7c89759db. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DEZZ52172316.
  date published: 2026-07-19T07:37:00Z
audio: I'm Nobody's Baby
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.251
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.45
  additional property: Energy
    type: PropertyValue
    value: 0.32
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.782
  additional property: Liveness
    type: PropertyValue
    value: 0.6
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.585
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.371
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Charleston Crazy
type: MusicRecording
duration: PT2M43S
duration ms: 163533
explicit: false
by artist: Marion Harris
in album: Marion Harris
  type: MusicAlbum
  date published: 1916-12-17
genre: ragtime
genre: vocal jazz
isrc code: DEZZ52172323
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T00:39:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb7dee91a22dfac2c6577855795aa939864c17c8bf46e9a1420d98c982972a4f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958342
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ52172323
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T03:41:12Z
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 0xbb7dee91a22dfac2c6577855795aa939864c17c8bf46e9a1420d98c982972a4f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:41:12Z), 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/DEZZ52172323.
  date published: 2026-07-17T03:41:12Z
audio: Charleston Crazy
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  additional property: Tempo (BPM)
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Tea for Two
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genre: ragtime
genre: vocal jazz
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subject of: OpenTimestamps Proof of Existence
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audio: Tea for Two
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Marion Harris, Tea for Two & St Louis Blues
type: MusicAlbum
date published: 1918

Marion Harris, Tea for Two & St Louis Blues
type: MusicAlbum
date published: 1918-01-01

After You’ve Gone
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date published: 1918-06-03

A Good Man is Hard to Find
type: MusicAlbum
date published: 1919-11-17

Take Me to the Land of Jazz
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date published: 1919-11-25

Sweet Mama
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date published: 1920-02-11

I Told You So
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date published: 1920-02-18

I'm Gonna Do it if I Like it
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date published: 1921-04-06

Collection
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date published: 1921-04-08

Fickle Flo
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date published: 1922-03-15

Haunting Blues
type: MusicAlbum
date published: 1923-07-24

Somebody Loves Me
type: MusicAlbum
date published: 1924-03-04

Charleston Charlie
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date published: 1924-09-25

Go, Emmaline
type: MusicAlbum
date published: 1924-10-14

Ladies Jazz
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date published: 1924-10-31

The Blues Have Got Me
type: MusicAlbum
date published: 1924-11-20

Tea For Two
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date published: 1925-02-11

Malinda Brown
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date published: 1926-01-12

Collection
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date published: 1928-06-13

The Very Best Of
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1916-1919 Master Recordings
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The Artistry of Marion Harris 1924 - 1934
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For Johnny and Me
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A Good Man Is Hard to Find
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Yankee
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Classic 1920's Music, Vol. 4
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  subject of: OpenTimestamps Proof of Existence
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Look for the Silver Lining
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Paradise
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Who Cares
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Marion Harris (Brunswick 1) [Recorded 1922-1923] [Early Blues & Jazz Vocals]
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Hits of Marion Harris
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Paradise Blues
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Essential Hits
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Brunswick 2 (1920's Blues & Jazz Vocals) [Recorded 1923-1925]
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-05T22:14:35Z
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track: You May Be Fast, But You Won't Last (Recorded October 1923)
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-19T12:24:55Z
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Brunswick 3 (1920's Blues & Jazz Vocals) [Recorded 1925-1934]
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  subject of: OpenTimestamps Proof of Existence
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  audio: Nobody's Sweetheart (Recorded December 1929)
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Columbia 1 (1920's Jazz Vocals) [Recorded 1920-1921]
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Columbia 2 (1920's Jazz Vocals) [Recorded 1921-1922]
type: MusicAlbum
date published: 2014-12-19

Classic 1920's Music, Vol. 4 (Special Edition)
type: MusicAlbum
date published: 2015-04-14

Paradise Blues
type: MusicAlbum
date published: 2019-04-24

At Her Best
type: MusicAlbum
date published: 2019-05-02

Golden Selection (Remastered)
type: MusicAlbum
date published: 2020-10-03

I'm Nobody's Baby - Winter Jazz Music from Marion Harris
type: MusicAlbum
date published: 2023-02-03

A Hundred Years Ago...
type: MusicAlbum
date published: 2023-04-13

Early Century Queen
type: MusicAlbum
date published: 2023-11-17

Baby, I Am Jazz - a Magical Summer with Marion Harris
type: MusicAlbum
date published: 2024-07-19

Essential Classics, Vol. 1069: Marion Harris
type: MusicAlbum
date published: 2025-09-12