Clara Smith
type: MusicGroup
genre: blues
genre: classic blues
genre: ragtime
description: Clara Smith (March 13, 1894 – February 2, 1935) was an American classic female blues singer, billed as the "Queen of the Moaners", although she had a lighter and sweeter voice than many of her contemp
popularity: 10
followers: 3409
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416bd7b6f9060fe0e06620efd6b3331cf7d509faa2761f00b77662dc5d2ddaf. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b304469d-fd9d-4db6-9ac4-73c959045391.json and https://artists.proofprofile.net/proofs/artist/b304469d-fd9d-4db6-9ac4-73c959045391.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
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album: Woman To Woman
  type: MusicAlbum
  date published: 1922-12-27
album: Presenting Clara Smith
  type: MusicAlbum
  date published: 1923-05-27
album: Vintage Recordings
  type: MusicAlbum
  date published: 1924-08-05
album: Broken Busted Blues
  type: MusicAlbum
  date published: 1925-01-07
album: Steel Drivin' Sam
  type: MusicAlbum
  date published: 1925-07-23
album: Clara Smith Vol. 3 (1925)
  type: MusicAlbum
  date published: 1995
album: Clara Smith Vol. 5 (1927-1929)
  type: MusicAlbum
  date published: 1995
  track: Where Is My Man?
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188656
    explicit: false
    by artist: Clara Smith
    in album: Clara Smith Vol. 5 (1927-1929)
      type: MusicAlbum
      date published: 1995
    genre: blues
    genre: classic blues
    genre: ragtime
    isrc code: USA560565606
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560565606
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T11:41:42Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0f98444098213c921083d8b2e8ea560e1c884031c08865e30a597d990e05d7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USA560565606.
      date published: 2026-07-21T11:41:42Z
    audio: Where Is My Man?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.63
      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: 0.649
      additional property: Energy
        type: PropertyValue
        value: 0.254
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.971
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.534
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.374
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Clara Smith Vol. 4 (1926-1927)
  type: MusicAlbum
  date published: 1995
album: Clara Smith Vol. 1 (1923-1924)
  type: MusicAlbum
  date published: 1995
album: Clara Smith Vol. 6 (1930-1932)
  type: MusicAlbum
  date published: 1995
album: Clara Smith Vol. 2 (1924)
  type: MusicAlbum
  date published: 1995
album: Best Of The Blues
  type: MusicAlbum
  date published: 2010-05-01
album: All Night Blues
  type: MusicAlbum
  date published: 2010-05-31
album: Gin Mill Blues
  type: MusicAlbum
  date published: 2010-06-30
album: Queen of the Moaners
  type: MusicAlbum
  date published: 2015-04-09
album: Milestones of Legends - Female Blues, Vol. 2
  type: MusicAlbum
  date published: 2018-03-18
album: Milestones of Legends - Female Blues, Vol. 2
  type: MusicAlbum
  date published: 2018-03-18
album: Court House Blues
  type: MusicAlbum
  date published: 2019-04-23
album: Deep Blue Sea Blues (Remaster)
  type: MusicAlbum
  date published: 2019-12-09
album: The Speakeasy Lady
  type: MusicAlbum
  date published: 2021-02-26
album: All Night Blues
  type: MusicAlbum
  date published: 2021-09-03
album: Top 103 Classics - The Very Best of Clara Smith
  type: MusicAlbum
  date published: 2021-10-22
track: For Sale (Hannah Johnsons Big Jack Ass)
  type: MusicRecording
  duration: PT3M1S
  duration ms: 181000
  explicit: false
  by artist: Clara Smith
  in album: Those Dirty Blues, Vol. 2
  isrc code: USM2U0802808
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: For Sale (Hannah Johnsons Big Jack Ass)

Clara Smith
type: MusicGroup

Those Dirty Blues, Vol. 2
type: MusicAlbum
date published: 2010-11-25

CopyrightID
type: PropertyValue

CopyrightStatus
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value: registered

CopyrightRegisteredAt
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value: 2026-07-31T22:56:08+00:00

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x26c459b123085c8bf50bb2d40293ce43d0a70e34ebfd96fb3b83410dd520fa13

OTSHash
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OTSBitcoinBlock
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value: 960478

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960478

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USM2U0802808

OTSTimestamp
type: PropertyValue
value: 2026-07-31T23:30:38Z

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 0x26c459b123085c8bf50bb2d40293ce43d0a70e34ebfd96fb3b83410dd520fa13. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USM2U0802808.
date published: 2026-07-31T23:30:38Z

For Sale (Hannah Johnsons Big Jack Ass)
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
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additional property: Danceability
  type: PropertyValue
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Mode Name
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