Cheryl Seltzer
type: MusicGroup
genre: avant-garde
genre: chamber music
popularity: 7
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x54b1235accd4bbb2554f88a07583b943947c24a95e71f17501ea5d0e51d707e4
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/949c9327-a64f-425b-a559-f6fd96882749.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/949c9327-a64f-425b-a559-f6fd96882749.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/949c9327-a64f-425b-a559-f6fd96882749
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x54b1235accd4bbb2554f88a07583b943947c24a95e71f17501ea5d0e51d707e4","name":"Cheryl Seltzer","registered_at":"2026-06-17T17:34:12Z","symbol":"NIM1468485","token_address":"0x8f2b0e24bd374e61d0700c09f38d4444d59bf5cc","type":"artist","uuid":"949c9327-a64f-425b-a559-f6fd96882749"}
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 0x54b1235accd4bbb2554f88a07583b943947c24a95e71f17501ea5d0e51d707e4. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/949c9327-a64f-425b-a559-f6fd96882749.json and https://artists.proofprofile.net/proofs/artist/949c9327-a64f-425b-a559-f6fd96882749.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x54b1235accd4bbb2554f88a07583b943947c24a95e71f17501ea5d0e51d707e4","name":"Cheryl Seltzer","registered_at":"2026-06-17T17:34:12Z","symbol":"NIM1468485","token_address":"0x8f2b0e24bd374e61d0700c09f38d4444d59bf5cc","type":"artist","uuid":"949c9327-a64f-425b-a559-f6fd96882749"}
track: Homage to Iran: I. Andante rubato
  type: MusicRecording
  duration: PT6M46S
  duration ms: 406440
  explicit: false
  by artist: Henry Cowell
  by artist: Mark Steinberg
  by artist: Joel Sachs
  by artist: Cheryl Seltzer
  by artist: Continuum
  in album: Cowell: Homage To Iran / Piano Pieces / Set of Five / Six Casual Developments / Two Songs
    type: MusicAlbum
    date published: 2005-02-01
  isrc code: HKI190351901
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T10:47:48+00:00
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    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x207c560956d49a41a3402cd3c1f1f18b36237de5fbc4e84174b5dd99013520dd
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 957118
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    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190351901
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x207c560956d49a41a3402cd3c1f1f18b36237de5fbc4e84174b5dd99013520dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190351901 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Homage to Iran: I. Andante rubato
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.493
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.347
    additional property: Energy
      type: PropertyValue
      value: 0.046
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.914
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.608
    additional property: Liveness
      type: PropertyValue
      value: 0.083
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.081
    additional property: Loudness (dB)
      type: PropertyValue
      value: -33.262
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: The Banshee
  type: MusicRecording
  duration: PT2M7S
  duration ms: 127826
  explicit: false
  by artist: Henry Cowell
  by artist: Cheryl Seltzer
  by artist: Continuum
  in album: Cowell: Homage To Iran / Piano Pieces / Set of Five / Six Casual Developments / Two Songs
    type: MusicAlbum
    date published: 2005-02-01
  isrc code: HKI190351910
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-23T10:09:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x434caad46836a09920df9eaab2d661929fac5285ceae5f6f17361f66618ebbb4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190351910
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x434caad46836a09920df9eaab2d661929fac5285ceae5f6f17361f66618ebbb4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190351910 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: The Banshee
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 168.406
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 6
    additional property: Danceability
      type: PropertyValue
      value: 0.166
    additional property: Energy
      type: PropertyValue
      value: 0.014
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.224
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.138
    additional property: Liveness
      type: PropertyValue
      value: 0.143
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.078

Loudness (dB)
type: PropertyValue
value: -37.53

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major