Robert Sprague
type: MusicGroup
description: Robert Cole Sprague (born April 18, 1973) is an American politician serving as the 49th Ohio treasurer of state since 2019. Prior to his election as treasurer, he represented the 83rd district in the
popularity: 8
followers: 43
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-17T08:10:43Z
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa333285798985b9244fd1f5cc504d006411eb5c16210b8c844df9885a79a2dd0. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39eb3bed-f287-466b-ad39-03d71e3276f0.json and https://artists.proofprofile.net/proofs/artist/39eb3bed-f287-466b-ad39-03d71e3276f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xa333285798985b9244fd1f5cc504d006411eb5c16210b8c844df9885a79a2dd0","name":"Robert Sprague","registered_at":"2026-06-16T09:45:03Z","symbol":"NIM1013082","token_address":"0x63306fc05db2d0a966a1fba62833ccceb607d40d","type":"artist","uuid":"39eb3bed-f287-466b-ad39-03d71e3276f0"}
album: Indecent Proposal
  type: MusicAlbum
  date published: 2023-06-24
album: Parisian Groove
  type: MusicAlbum
  date published: 2023-07-01
album: Friends
  type: MusicAlbum
  date published: 2023-07-24
album: Solar Radiance
  type: MusicAlbum
  date published: 2023-07-28
album: Funny Moments
  type: MusicAlbum
  date published: 2023-08-09
  track: Funny Moments
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    by artist: Robert Sprague
    in album: Funny Moments
      type: MusicAlbum
      date published: 2023-08-09
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab93028c6fc8a93347fbdc6f9a23a0aeb8df95c297da33caae0d9791ff54f69. 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/BGA472320847.
      date published: 2026-07-05T01:12:41Z
    audio: Funny Moments
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      additional property: Time Signature
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      additional property: Danceability
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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: Key Name
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      additional property: Mode Name
        type: PropertyValue
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album: White Weekend
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  date published: 2023-08-11
  track: White Weekend
    type: MusicRecording
    duration: PT2M41S
    duration ms: 161556
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    by artist: Robert Sprague
    in album: White Weekend
      type: MusicAlbum
      date published: 2023-08-11
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
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      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdce5d6c429a16e1da7daf15ae88e511cf7d70807f20003ef6675554bb3f643f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BGA472313455.
      date published: 2026-07-16T03:46:09Z
    audio: White Weekend
      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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        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
      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
album: Infinity Loops
album: Angel of Heaven
album: Orbiting Love
album: Carrusel
album: Stars Simphony

Speechiness
type: PropertyValue
value: 0.065

Acousticness
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value: 0.029

Instrumentalness
type: PropertyValue
value: 0.814

Liveness
type: PropertyValue
value: 0.079

Valence (Positivity)
type: PropertyValue
value: 0.531

Loudness (dB)
type: PropertyValue
value: -9.684

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

Infinity Loops
type: MusicAlbum
date published: 2023-10-16

Angel of Heaven
type: MusicAlbum
date published: 2023-10-18

Orbiting Love
type: MusicAlbum
date published: 2023-10-25

Carrusel
type: MusicAlbum
date published: 2023-10-27

Stars Simphony
type: MusicAlbum
date published: 2023-11-01