Drew Hemenger
type: MusicGroup
popularity: 5
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9acc561301a866003712e6a17e401eb2f208045d9013e37cfcd2f7930a64ce2d
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/fba724cf-564d-4672-a211-88e53dafa796.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fba724cf-564d-4672-a211-88e53dafa796.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fba724cf-564d-4672-a211-88e53dafa796
additional property: OTSTimestamp
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  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acc561301a866003712e6a17e401eb2f208045d9013e37cfcd2f7930a64ce2d. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fba724cf-564d-4672-a211-88e53dafa796.json and https://artists.proofprofile.net/proofs/artist/fba724cf-564d-4672-a211-88e53dafa796.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0x9acc561301a866003712e6a17e401eb2f208045d9013e37cfcd2f7930a64ce2d","name":"Drew Hemenger","registered_at":"2026-06-21T17:17:26Z","symbol":"NIM1984180","token_address":"0x00e74f083c059ea280948070e1a24d2d1cb7574d","type":"artist","uuid":"fba724cf-564d-4672-a211-88e53dafa796"}
album: Four Places In New York: A Suite for Solo Piano
  type: MusicAlbum
  date published: 2007
album: The Weary Blues: Drew Hemenger Songs
  type: MusicAlbum
  date published: 2023-08-12
  track: The Weary Blues
    type: MusicRecording
    duration: PT6M50S
    duration ms: 410965
    explicit: false
    by artist: Drew Hemenger
    in album: The Weary Blues: Drew Hemenger Songs
      type: MusicAlbum
      date published: 2023-08-12
    isrc code: ES17B2300641
    additional property: CopyrightID
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    additional property: OTSBitcoinBlock
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    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/ES17B2300641
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef664c0709cac2da2e3fd0819016cce814df6be4bd6e3564e6432f8e8da2f0c2. 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/ES17B2300641.
      date published: 2026-07-02T16:51:38Z
    audio: The Weary Blues
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.22
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
        value: 0.037
      additional property: Speechiness
        type: PropertyValue
        value: 0.045
      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.087
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.104
      additional property: Loudness (dB)
        type: PropertyValue
        value: -23.927
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor