Walter Hargreaves
type: MusicGroup
popularity: 2
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdf627aace41be20907b449b68072bbb59afac40e3d807266c60fa26b1c04b553
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2c42e3e-d914-4641-b815-f83fa230bef7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b2c42e3e-d914-4641-b815-f83fa230bef7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b2c42e3e-d914-4641-b815-f83fa230bef7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdf627aace41be20907b449b68072bbb59afac40e3d807266c60fa26b1c04b553","name":"Walter Hargreaves","registered_at":"2026-06-20T13:06:59Z","symbol":"NIM1619218","token_address":"0xb8c657781dab587c4080349fb6f2d9804ff48920","type":"artist","uuid":"b2c42e3e-d914-4641-b815-f83fa230bef7"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf627aace41be20907b449b68072bbb59afac40e3d807266c60fa26b1c04b553. 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/b2c42e3e-d914-4641-b815-f83fa230bef7.json and https://artists.proofprofile.net/proofs/artist/b2c42e3e-d914-4641-b815-f83fa230bef7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0xdf627aace41be20907b449b68072bbb59afac40e3d807266c60fa26b1c04b553","name":"Walter Hargreaves","registered_at":"2026-06-20T13:06:59Z","symbol":"NIM1619218","token_address":"0xb8c657781dab587c4080349fb6f2d9804ff48920","type":"artist","uuid":"b2c42e3e-d914-4641-b815-f83fa230bef7"}
track: Radetzky Marsch, Op. 228
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132386
  explicit: false
  by artist: Walter Hargreaves
  by artist: Johann Strauss I
  by artist: Black Dyke Band & James Watson
  by artist: James Watson
  in album: Strauss Festival
    type: MusicAlbum
    date published: 1996
  isrc code: CH6540839479
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T08:12:48+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd04d1c97aeb338c791b1880edf371f588ce7031d32b0b8f9fb4a6ed3a8f4653b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957073
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957073
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540839479
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-07T18:39:05Z
  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 0xd04d1c97aeb338c791b1880edf371f588ce7031d32b0b8f9fb4a6ed3a8f4653b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6540839479.
    date published: 2026-07-07T18:39:05Z
  audio: Radetzky Marsch, Op. 228
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.718
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.555
    additional property: Energy
      type: PropertyValue
      value: 0.308
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.96
    additional property: Liveness
      type: PropertyValue
      value: 0.281
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.877
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.815
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major