Ma Rainey
type: MusicGroup
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
description: Gertrude "Ma" Rainey ( Pridgett; April 26, 1886 – December 22, 1939) was an American blues singer and influential early-blues recording artist. Dubbed the "Mother of the Blues", she bridged earlier va
popularity: 27
followers: 55489
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdaa30a5055cea164711cfb2fa6c29f908146d9d2c9ab815aca79dbb36a424d47
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdaa30a5055cea164711cfb2fa6c29f908146d9d2c9ab815aca79dbb36a424d47","name":"Ma Rainey","registered_at":"2026-06-11T21:37:08Z","symbol":"NIM0119229","token_address":"0xe4dfc8c7cabf441429e803ad0173e7194ea9cefc","type":"artist","uuid":"5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa30a5055cea164711cfb2fa6c29f908146d9d2c9ab815aca79dbb36a424d47. 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/5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d.json and https://artists.proofprofile.net/proofs/artist/5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xdaa30a5055cea164711cfb2fa6c29f908146d9d2c9ab815aca79dbb36a424d47","name":"Ma Rainey","registered_at":"2026-06-11T21:37:08Z","symbol":"NIM0119229","token_address":"0xe4dfc8c7cabf441429e803ad0173e7194ea9cefc","type":"artist","uuid":"5c2c03dd-9c2b-4d88-8f29-7f7ac4d3129d"}
album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
  track: Booze and Blues
    type: MusicRecording
    duration: PT3M11S
    duration ms: 191613
    explicit: false
    by artist: Ma Rainey
    in album: Gone Daddy Blues
      type: MusicAlbum
      date published: 1923-12-23
    genre: blues
    genre: classic blues
    genre: country blues
    genre: ragtime
    isrc code: DEXO52476582
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T06:17:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x962524e146d21e092e6528cea865472cf1fcd6a302ecb13f64fa8e40b19f6d68
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476582
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x962524e146d21e092e6528cea865472cf1fcd6a302ecb13f64fa8e40b19f6d68. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXO52476582.
      date published: 2026-07-02T16:51:38Z
    audio: Booze and Blues
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.464
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.64
      additional property: Energy
        type: PropertyValue
        value: 0.251
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.995
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.362
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.658
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.255
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: "Ma" Rainey's Black Bottom
    type: MusicRecording
    duration: PT3M11S
    duration ms: 191493
    explicit: false
    by artist: Ma Rainey
    in album: Gone Daddy Blues
      type: MusicAlbum
      date published: 1923-12-23
    genre: blues
    genre: classic blues
    genre: country blues
    genre: ragtime
    isrc code: DEXO52476583
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T06:15:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2667a6daeade52a763e92e5d65df88643212d2558de236f7ccef73e22194ca4b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476583
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x2667a6daeade52a763e92e5d65df88643212d2558de236f7ccef73e22194ca4b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXO52476583.
      date published: 2026-07-02T16:51:38Z
    audio: "Ma" Rainey's Black Bottom
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.571
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.678
      additional property: Energy
        type: PropertyValue
        value: 0.36
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Dead Drunk Blues
  track: Prove It On Me Blues
  track: See See Rider Blues
  track: Shaveem Dry Blues
  track: Prove It On Me Blues - Alternate Take
  track: Stack O'Lee Blues - Alternate Take
album: Presenting Ma Rainey
album: First of the Great Blues Singers
album: Ma Rainey's Black Bottom
album: Ma Rainey
album: Ma Rainey (1928)
album: Ma Rainey Vol. 4 (1926-1927)
album: Ma Rainey Vol. 1 (1923-1924)
album: Ma Rainey Vol. 3 (1925-1926)
album: Ma Rainey Vol. 2 (1924-1925)
album: 1923-1928
album: Ma Rainey Vol. 2
album: Ma Rainey, Vol. 3
album: Queen Of The Blues, Vol. 3
album: Ma Rainey Vol. 1
album: Jealous Hearted Blues
album: Jazz Figures / Ma Rainey (1924-1925)
album: Ma Rainey Selected Favorites
album: Ma Rainey's Wringin' and Twistin' Blues
album: An Introduction To Ma Rainey
album: Mother Of The Blues, CD B
album: Mother Of The Blues, CD D
album: Mother Of The Blues, CD E
album: Mother Of The Blues, CD A
album: Mother Of The Blues, CD C
album: Classic Years of Ma Rainey
album: Night Time Blues
album: See See Rider Blues (The Best Of)
album: Blues Masters Vol. 17 (Ma Rainey)
album: The Very Best Of
album: Blues Greats
album: The Great Ma Rainey
album: Blues Experience, Vol. 17
album: Queen Of The Blues Volume 3
album: Shave 'Em Dry Blues
album: Southern Blues - Remastered
album: Ma Rainey Is Singing The Blues
album: Blues Pack - Ma Rainey
album: Presenting… Ma Rainey
album: Blues Legends pres. Ma Rainey
album: Absolutely The Best Of Ma Rainey
album: Those Dogs of Mine
album: Blues Masters-Ma Rainey-Vol. 6
album: Beyond Patina Jazz Masters: Ma Rainey
album: Supreme Female Jazz: Ma Rainey
album: Blues Legends: Ma Rainey
album: For All the Blues
album: See See Rider Blues (Classic Mood Experience)
album: Just Ma Rainey
album: The Great
album: Blues Sensation
album: Nobody Rocks Me Like My Baby Do
album: Mother Of The Blues
album: Blues Will Never Die (Remastered)
album: Don't Fish in My Sea
album: Unforgettable Sentimental Songs
album: Explaining the Blues
album: I Found My Love Outside
album: The Groovin' Atmosphere
album: Memories Suite

Acousticness
type: PropertyValue
value: 0.993

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.456

Valence (Positivity)
type: PropertyValue
value: 0.73

Loudness (dB)
type: PropertyValue
value: -6.414

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Minor

Dead Drunk Blues
type: MusicRecording
duration: PT2M52S
duration ms: 172973
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476584
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-05T00:19:02+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65066b188e15f4b8d40528ee1b02f94a1cd7a91c59b9465a7e582867d36a31e1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956725
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956725
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476584
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-05T01:12:41Z
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 0x65066b188e15f4b8d40528ee1b02f94a1cd7a91c59b9465a7e582867d36a31e1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO52476584.
  date published: 2026-07-05T01:12:41Z
audio: Dead Drunk Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.163
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.612
  additional property: Energy
    type: PropertyValue
    value: 0.104
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.429
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.549
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Prove It On Me Blues
type: MusicRecording
duration: PT2M45S
duration ms: 165093
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476585
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T13:00:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2aa2d569230208f51dc0b4b013ff5dc54ac32a6000dd4be99f9cc6454d5e88b3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958552
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958552
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476585
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T13:15:29Z
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 0x2aa2d569230208f51dc0b4b013ff5dc54ac32a6000dd4be99f9cc6454d5e88b3. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEXO52476585.
  date published: 2026-07-18T13:15:29Z
audio: Prove It On Me Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.08
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.624
  additional property: Energy
    type: PropertyValue
    value: 0.286
  additional property: Speechiness
    type: PropertyValue
    value: 0.1
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.552
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.083
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

See See Rider Blues
type: MusicRecording
duration: PT3M15S
duration ms: 195493
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476586
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-13T15:01:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5aed0d91b439de1c2416aabdde8f990e2d8de99122c99cac996fe7b89f9fc423
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957872
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957872
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476586
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T15:39:45Z
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 0x5aed0d91b439de1c2416aabdde8f990e2d8de99122c99cac996fe7b89f9fc423. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEXO52476586.
  date published: 2026-07-13T15:39:45Z
audio: See See Rider Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 70.226
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.506
  additional property: Energy
    type: PropertyValue
    value: 0.178
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.192
  additional property: Liveness
    type: PropertyValue
    value: 0.503
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.32
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.233
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Shaveem Dry Blues
type: MusicRecording
duration: PT2M37S
duration ms: 157960
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476652
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-18T21:39:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x982fe5cdea72b0a9edb8ae071b676daa750a7602c29c4e2510d1a3a5f29e5e87
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958617
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958617
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476652
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T22:07:13Z
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 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 0x982fe5cdea72b0a9edb8ae071b676daa750a7602c29c4e2510d1a3a5f29e5e87. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DEXO52476652.
  date published: 2026-07-18T22:07:13Z
audio: Shaveem Dry Blues
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.372
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.492
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.077
  additional property: Liveness
    type: PropertyValue
    value: 0.326
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.687
  additional property: Loudness (dB)
    type: PropertyValue
    value: -7.101
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Prove It On Me Blues - Alternate Take
type: MusicRecording
duration: PT2M41S
duration ms: 161373
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476669
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-17T11:20:18+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x585e38f4d8e2723156c745f913717a5e922a824230fc7dd67762dc7ce3b263c0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 958404
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958404
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476669
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-17T11:34:58Z
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 0x585e38f4d8e2723156c745f913717a5e922a824230fc7dd67762dc7ce3b263c0. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEXO52476669.
  date published: 2026-07-17T11:34:58Z
audio: Prove It On Me Blues - Alternate Take
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.947
  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: 0.699
  additional property: Energy
    type: PropertyValue
    value: 0.325
  additional property: Speechiness
    type: PropertyValue
    value: 0.151
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.066
  additional property: Liveness
    type: PropertyValue
    value: 0.159
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.627
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.633
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Stack O'Lee Blues - Alternate Take
type: MusicRecording
duration: PT2M55S
duration ms: 175733
explicit: false
by artist: Ma Rainey
in album: Gone Daddy Blues
  type: MusicAlbum
  date published: 1923-12-23
genre: blues
genre: classic blues
genre: country blues
genre: ragtime
isrc code: DEXO52476680
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-21T19:58:43+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2d10ac531c95f78c007da4db1b571198f625ffeaa537c1f093f2a1f0f7214592
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959054
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959054
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52476680
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T20:19:31Z
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 0x2d10ac531c95f78c007da4db1b571198f625ffeaa537c1f093f2a1f0f7214592. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/DEXO52476680.
  date published: 2026-07-21T20:19:31Z
audio: Stack O'Lee Blues - Alternate Take
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 89.87
  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: 0.531
  additional property: Energy
    type: PropertyValue
    value: 0.172
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.039
  additional property: Liveness
    type: PropertyValue
    value: 0.363
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.593
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.762
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Presenting Ma Rainey
type: MusicAlbum
date published: 1924-06-03
track: ma Rainey's Black Bottom
  type: MusicRecording
  duration: PT3M11S
  duration ms: 191493
  explicit: false
  by artist: Ma Rainey
  in album: Presenting Ma Rainey
    type: MusicAlbum
    date published: 1924-06-03
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: DEXO32237362
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T09:15:03+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x43e29a578ac3da884e4b40f8891923424e3fc7efe54e0acd14cd8ba54b8c5526
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958711
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958711
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO32237362
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T09:26:32Z
  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 0x43e29a578ac3da884e4b40f8891923424e3fc7efe54e0acd14cd8ba54b8c5526. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEXO32237362.
    date published: 2026-07-19T09:26:32Z
  audio: ma Rainey's Black Bottom
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 99.571
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.678
    additional property: Energy
      type: PropertyValue
      value: 0.36
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.993
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.456
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.73
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.414
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

First of the Great Blues Singers
type: MusicAlbum
date published: 1940-07-17

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 1990

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 1990-01-01
track: Oh Papa Blues
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172066
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey's Black Bottom
    type: MusicAlbum
    date published: 1990-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USA370640447
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T07:00:42+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x475526d2b8ff7f3c5d7d82b906a6b86c29bd5c1153eac2a05ff12f8b826482e5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958980
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958980
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370640447
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T07:04:12Z
  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 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 0x475526d2b8ff7f3c5d7d82b906a6b86c29bd5c1153eac2a05ff12f8b826482e5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USA370640447.
    date published: 2026-07-21T07:04:12Z
  audio: Oh Papa Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 109.106
    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: 0.675
    additional property: Energy
      type: PropertyValue
      value: 0.278
    additional property: Speechiness
      type: PropertyValue
      value: 0.065
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.614
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.231
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Ma Rainey
type: MusicAlbum
date published: 1992-01-01

Ma Rainey
type: MusicAlbum
date published: 1992-01-01
track: Jealous Hearted Blues
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190200
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey
    type: MusicAlbum
    date published: 1992-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USFI82400001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T08:47:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xee69a02b8383c754e84cf00a089a2413f1670c650cfdac219cbc7c939d1e3daa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956772
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI82400001
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  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 0xee69a02b8383c754e84cf00a089a2413f1670c650cfdac219cbc7c939d1e3daa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USFI82400001.
    date published: 2026-07-05T10:01:46Z
  audio: Jealous Hearted Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 80.933
    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: 0.607
    additional property: Energy
      type: PropertyValue
      value: 0.095
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.996
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.21
    additional property: Liveness
      type: PropertyValue
      value: 0.406
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.581
    additional property: Loudness (dB)
      type: PropertyValue
      value: -16.031
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Chain Gang Blues
  type: MusicRecording
  duration: PT3M4S
  duration ms: 184800
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey
    type: MusicAlbum
    date published: 1992-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USFI82600002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T08:39:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xaf10efdb6ccf79d6c215042e6445088949919eaed8d5e23e1b98c106fa8966aa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958706
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958706
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI82600002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T08:50:34Z
  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 0xaf10efdb6ccf79d6c215042e6445088949919eaed8d5e23e1b98c106fa8966aa. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USFI82600002.
    date published: 2026-07-19T08:50:34Z
  audio: Chain Gang Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.656
    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: 0.578
    additional property: Energy
      type: PropertyValue
      value: 0.071
    additional property: Speechiness
      type: PropertyValue
      value: 0.047
    additional property: Acousticness
      type: PropertyValue
      value: 0.996
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.585
    additional property: Liveness
      type: PropertyValue
      value: 0.326
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.594
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.031
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Sweet Rough Man
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185733
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey
    type: MusicAlbum
    date published: 1992-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USFI82800010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-17T01:11:59+00:00
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Sweet Rough Man

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xbdc6c80e4a03f7a09e640832d694764843f55627a8e055c0fcdbbd7de0917224

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958346

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958346

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI82800010

OTSTimestamp
type: PropertyValue
value: 2026-07-17T01:47:42Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc6c80e4a03f7a09e640832d694764843f55627a8e055c0fcdbbd7de0917224. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USFI82800010.
date published: 2026-07-17T01:47:42Z

Sweet Rough Man
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 167.481
additional property: Musical Key
  type: PropertyValue
  value: 8
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.631
additional property: Energy
  type: PropertyValue
  value: 0.11
additional property: Speechiness
  type: PropertyValue
  value: 0.053
additional property: Acousticness
  type: PropertyValue
  value: 0.995
additional property: Instrumentalness
  type: PropertyValue
  value: 0.004
additional property: Liveness
  type: PropertyValue
  value: 0.104
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.59
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.189
additional property: Key Name
  type: PropertyValue
  value: Ab
additional property: Mode Name
  type: PropertyValue
  value: Major

Ma Rainey (1928)
type: MusicAlbum
date published: 1993
track: Prove It On Me Blues
  type: MusicRecording
  duration: PT2M45S
  duration ms: 165094
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey (1928)
    type: MusicAlbum
    date published: 1993
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USA560530467
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T08:15:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdcd29a3540b72ccbd171b236ed3f4cb2b012db3018917166b7325ee501a214f5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958130
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958130
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560530467
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T08:37:45Z
  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 0xdcd29a3540b72ccbd171b236ed3f4cb2b012db3018917166b7325ee501a214f5. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/USA560530467.
    date published: 2026-07-15T08:37:45Z
  audio: Prove It On Me Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 105.085
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.623
    additional property: Energy
      type: PropertyValue
      value: 0.271
    additional property: Speechiness
      type: PropertyValue
      value: 0.1
    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.023
    additional property: Liveness
      type: PropertyValue
      value: 0.13
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.535
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.719
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Ma Rainey Vol. 4 (1926-1927)
type: MusicAlbum
date published: 1997

Ma Rainey Vol. 1 (1923-1924)
type: MusicAlbum
date published: 1997

Ma Rainey Vol. 3 (1925-1926)
type: MusicAlbum
date published: 1997
track: Stack O'Lee Blues
  type: MusicRecording
  duration: PT2M55S
  duration ms: 175726
  explicit: false
  by artist: Ma Rainey
  in album: Ma Rainey Vol. 3 (1925-1926)
    type: MusicAlbum
    date published: 1997
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USA560594628
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T17:39:27+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x74fa951c44ca88acd915000004e1a5b59b56e632bc2684d1cfe7de839c58652e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956826
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956826
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560594628
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T19:27:56Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x74fa951c44ca88acd915000004e1a5b59b56e632bc2684d1cfe7de839c58652e. 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/USA560594628.
    date published: 2026-07-05T19:27:56Z
  audio: Stack O'Lee Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 135.434
    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: 0.472
    additional property: Energy
      type: PropertyValue
      value: 0.155
    additional property: Speechiness
      type: PropertyValue
      value: 0.04
    additional property: Acousticness
      type: PropertyValue
      value: 0.996
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.052
    additional property: Liveness
      type: PropertyValue
      value: 0.393
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.638
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.859
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Ma Rainey Vol. 2 (1924-1925)
type: MusicAlbum
date published: 1997

1923-1928
type: MusicAlbum
date published: 1997-01-01
track: Stack O' Lee Blues
  type: MusicRecording
  duration: PT2M57S
  duration ms: 177400
  explicit: false
  by artist: Ma Rainey
  in album: 1923-1928
    type: MusicAlbum
    date published: 1997-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USCGJ0697988
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T08:17:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x832bf10d82d243974550e75560f63cad3106ed5f6c670708eb75eda9c43f5903
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958703
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958703
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ0697988
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T08:36:12Z
  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 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 0x832bf10d82d243974550e75560f63cad3106ed5f6c670708eb75eda9c43f5903. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USCGJ0697988.
    date published: 2026-07-19T08:36:12Z
  audio: Stack O' Lee Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 89.298
    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: 0.527
    additional property: Energy
      type: PropertyValue
      value: 0.247
    additional property: Speechiness
      type: PropertyValue
      value: 0.032
    additional property: Acousticness
      type: PropertyValue
      value: 0.996
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.033
    additional property: Liveness
      type: PropertyValue
      value: 0.488
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.611
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.373
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Ma Rainey Vol. 2
type: MusicAlbum
date published: 2000-01-01

Ma Rainey, Vol. 3
type: MusicAlbum
date published: 2000-01-01

Queen Of The Blues, Vol. 3
type: MusicAlbum
date published: 2000-01-01

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 2000-01-01

Ma Rainey Vol. 1
type: MusicAlbum
date published: 2000-01-01

Ma Rainey
type: MusicAlbum
date published: 2004

Jealous Hearted Blues
type: MusicAlbum
date published: 2005

Jazz Figures / Ma Rainey (1924-1925)
type: MusicAlbum
date published: 2006

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 2006-05-22

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 2006-05-22

Ma Rainey Selected Favorites
type: MusicAlbum
date published: 2006-06-20

Ma Rainey's Wringin' and Twistin' Blues
type: MusicAlbum
date published: 2006-06-25

An Introduction To Ma Rainey
type: MusicAlbum
date published: 2006-08-18

Mother Of The Blues, CD B
type: MusicAlbum
date published: 2007-01-01

Mother Of The Blues, CD D
type: MusicAlbum
date published: 2007-01-01
track: Dead Drunk Blues
  type: MusicRecording
  duration: PT2M52S
  duration ms: 172987
  explicit: false
  by artist: Ma Rainey
  in album: Mother Of The Blues, CD D
    type: MusicAlbum
    date published: 2007-01-01
  genre: blues
  genre: classic blues
  genre: country blues
  genre: ragtime
  isrc code: USA560662189
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-18T12:28:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x71570ee2b81effbf35ec15e5298ad70cd5d80b0c3ac58e33655d185073916983
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958547
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958547
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560662189
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T12:44:05Z
  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 0x71570ee2b81effbf35ec15e5298ad70cd5d80b0c3ac58e33655d185073916983. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USA560662189.
    date published: 2026-07-18T12:44:05Z
  audio: Dead Drunk Blues
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 89.533
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.601
    additional property: Energy
      type: PropertyValue
      value: 0.087
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.438
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.572
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

Mother Of The Blues, CD E
type: MusicAlbum
date published: 2007-01-01

Mother Of The Blues, CD A
type: MusicAlbum
date published: 2007-01-01

Mother Of The Blues, CD C
type: MusicAlbum
date published: 2007-01-01

Classic Years of Ma Rainey
type: MusicAlbum
date published: 2007-10-01

Ma Rainey
type: MusicAlbum
date published: 2008

Ma Rainey Vol. 1
type: MusicAlbum
date published: 2008-10-01

Night Time Blues
type: MusicAlbum
date published: 2008-11-30

See See Rider Blues (The Best Of)
type: MusicAlbum
date published: 2009-01-01

Blues Masters Vol. 17 (Ma Rainey)
type: MusicAlbum
date published: 2009-01-01

The Very Best Of
type: MusicAlbum
date published: 2009-01-01

Blues Greats
type: MusicAlbum
date published: 2009-11-17

The Great Ma Rainey
type: MusicAlbum
date published: 2009-12-07

Blues Experience, Vol. 17
type: MusicAlbum
date published: 2010-01-01

Queen Of The Blues Volume 3
type: MusicAlbum
date published: 2010-05-01

Shave 'Em Dry Blues
type: MusicAlbum
date published: 2010-07-31

Shave 'Em Dry Blues
type: MusicAlbum
date published: 2010-08-01

Southern Blues - Remastered
type: MusicAlbum
date published: 2010-11-30

Ma Rainey Is Singing The Blues
type: MusicAlbum
date published: 2011-02-22

Blues Pack - Ma Rainey
type: MusicAlbum
date published: 2011-03-15

Ma Rainey Selected Favorites
type: MusicAlbum
date published: 2011-03-21

Presenting… Ma Rainey
type: MusicAlbum
date published: 2011-07-01

Blues Legends pres. Ma Rainey
type: MusicAlbum
date published: 2011-07-13

Absolutely The Best Of Ma Rainey
type: MusicAlbum
date published: 2011-08-22

Ma Rainey
type: MusicAlbum
date published: 2011-09-30

Those Dogs of Mine
type: MusicAlbum
date published: 2011-10-05

Blues Masters-Ma Rainey-Vol. 6
type: MusicAlbum
date published: 2011-11-24

Ma Rainey's Black Bottom
type: MusicAlbum
date published: 2012-02-01

Beyond Patina Jazz Masters: Ma Rainey
type: MusicAlbum
date published: 2012-03-30

Supreme Female Jazz: Ma Rainey
type: MusicAlbum
date published: 2012-05-25

Blues Legends: Ma Rainey
type: MusicAlbum
date published: 2012-07-03

For All the Blues
type: MusicAlbum
date published: 2012-12-07

See See Rider Blues (Classic Mood Experience)
type: MusicAlbum
date published: 2013-01-01

Just Ma Rainey
type: MusicAlbum
date published: 2013-07-23

The Great
type: MusicAlbum
date published: 2013-07-26

Blues Sensation
type: MusicAlbum
date published: 2013-08-20

Nobody Rocks Me Like My Baby Do
type: MusicAlbum
date published: 2013-09-18

Mother Of The Blues
type: MusicAlbum
date published: 2014-05-30

Blues Will Never Die (Remastered)
type: MusicAlbum
date published: 2014-11-02

Don't Fish in My Sea
type: MusicAlbum
date published: 2015-02-23

Unforgettable Sentimental Songs
type: MusicAlbum
date published: 2015-03-15

Explaining the Blues
type: MusicAlbum
date published: 2015-03-17

I Found My Love Outside
type: MusicAlbum
date published: 2015-06-08

The Groovin' Atmosphere
type: MusicAlbum
date published: 2015-08-07

Memories Suite
type: MusicAlbum
date published: 2015-09-11

Can Anyone See The Light
type: MusicAlbum
date published: 2015-11-06

Goodbye Daddy Blues
type: MusicAlbum
date published: 2016-08-25

Highlights of Ma Rainey
type: MusicAlbum
date published: 2017-03-20

Prove It On Me Blues : The First of the Great Blues Singers
type: MusicAlbum
date published: 2017-06-01

Booze And Blues
type: MusicAlbum
date published: 2017-06-18

Nobody Rocks Me Like My Baby Do
type: MusicAlbum
date published: 2017-11-14

For All the Blues
type: MusicAlbum
date published: 2017-11-14

See See Rider
type: MusicAlbum
date published: 2018-07-11

Stormy
type: MusicAlbum
date published: 2018-09-01

The Definitive Collection 1924-28
type: MusicAlbum
date published: 2019-01-18

Slave To The Blues
type: MusicAlbum
date published: 2019-05-27

The Classic Years, Vol. 2
type: MusicAlbum
date published: 2019-07-14

Blame It on the Blues
type: MusicAlbum
date published: 2019-07-24

The Ultimate Ma Rainey Collection
type: MusicAlbum
date published: 2021-01-31

One Hundred Years of Mother's Blues
type: MusicAlbum
date published: 2021-03-05

The Essential & Original Southern Blues Collection
type: MusicAlbum
date published: 2021-03-05

Booze and Blues
type: MusicAlbum
date published: 2021-09-10

Moonshine Blues
type: MusicAlbum
date published: 2021-10-14

The Best of Blues
type: MusicAlbum
date published: 2022-07-18

Black Eye Blues
type: MusicAlbum
date published: 2023-03-17

Midnight Moods September Blues - Ma Rainey's Timeless Tunes
type: MusicAlbum
date published: 2023-09-08

Down the Road
type: MusicAlbum
date published: 2024-08-23

Essential Classics, Vol. 687: Ma Rainey
type: MusicAlbum
date published: 2024-12-09

Essential Classics, Vol. 687: Ma Rainey
type: MusicAlbum
date published: 2025-09-12

CC Rider
type: MusicRecording
duration: PT5M36S
duration ms: 336266
explicit: false
by artist: Ma Rainey
by artist: Chuck Willis
by artist: Jesse Stone
by artist: Lina Nyberg
by artist: Jacob Karlzon
in album: Temper
  type: MusicAlbum
  date published: 2000-01-01
isrc code: SEBAA9709080
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T08:34:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32f15d5046d3e51c4e810f8a40998cb91cc0b0d1dcc87c688a2712aefffa526c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960370
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960370
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SEBAA9709080
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:38:45Z
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 0x32f15d5046d3e51c4e810f8a40998cb91cc0b0d1dcc87c688a2712aefffa526c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/SEBAA9709080.
  date published: 2026-07-31T08:38:45Z
audio: CC Rider
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.666
  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: 0.463
  additional property: Energy
    type: PropertyValue
    value: 0.177
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.974
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.001
  additional property: Liveness
    type: PropertyValue
    value: 0.22
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.301
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.145
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor