Gregory Walker
type: MusicGroup
description: Gregory or Greg Walker may refer to: Greg Walker (academic), professor of rhetoric and English literature at the University of Edinburgh Greg Walker (baseball) (born 1959), former first baseman Gre
popularity: 2
followers: 75
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xe9e8311853df8dfbe90037c8aa2d26eada430290cf9a3442676e015958238163
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953939
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953939
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/20db6408-c901-4dc4-bef7-de9d9ef53b3e.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/20db6408-c901-4dc4-bef7-de9d9ef53b3e
additional property: OTSTimestamp
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  value: 2026-06-16T11:40:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe9e8311853df8dfbe90037c8aa2d26eada430290cf9a3442676e015958238163","name":"Gregory Walker","registered_at":"2026-06-16T01:00:28Z","symbol":"NIM0887807","token_address":"0x9b180edfabb156421b806111a9eeafd3ac7d0619","type":"artist","uuid":"20db6408-c901-4dc4-bef7-de9d9ef53b3e"}
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 0xe9e8311853df8dfbe90037c8aa2d26eada430290cf9a3442676e015958238163. Chain 2 (Bitcoin): anchored in block 953939 (2026-06-16T11:40:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20db6408-c901-4dc4-bef7-de9d9ef53b3e.json and https://artists.proofprofile.net/proofs/artist/20db6408-c901-4dc4-bef7-de9d9ef53b3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:40:13Z
  text: {"copyright_id":"0xe9e8311853df8dfbe90037c8aa2d26eada430290cf9a3442676e015958238163","name":"Gregory Walker","registered_at":"2026-06-16T01:00:28Z","symbol":"NIM0887807","token_address":"0x9b180edfabb156421b806111a9eeafd3ac7d0619","type":"artist","uuid":"20db6408-c901-4dc4-bef7-de9d9ef53b3e"}
album: Electric Vivaldi: Global Solstice
  type: MusicAlbum
  date published: 2013-09-03
album: George Walker: Composer and Performer
  type: MusicAlbum
  date published: 2014-03-01
track: Lyric for Strings
  type: MusicRecording
  duration: PT6M14S
  duration ms: 374973
  explicit: false
  by artist: George Walker
  by artist: Cleveland Chamber Symphony
  by artist: Gregory Walker
  by artist: Edwin London
  in album: Orchestral Works
    type: MusicAlbum
    date published: 1998-01-01
  genre: african-american-classical
  genre: american-modern-classical
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    value: https://blockstream.info/api/block-height/960095
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAB10617483
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T11:07:37Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x40e742e6ecfc9dc61e1471e561fa7cf340d7dd161a861efb6ce1da2969eda6dd. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAB10617483.
    date published: 2026-07-29T11:07:37Z
  audio: Lyric for Strings
    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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    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
      type: PropertyValue
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    additional property: Valence (Positivity)
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      value: 0.048
    additional property: Loudness (dB)
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      value: -26.384
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major