Head West
type: MusicGroup
description: Head West is a self-titled album released in 1970 by the American band Head West, who were based in Paris, France. The band are best known today for their vocalist/guitarist Bob Welch, who went on to
popularity: 5
followers: 397
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x9acd57c85343afac25ee88c7b23eda35c0b240a441803c183502c812f0ec1dce
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/2378125f-b3b7-44de-b854-e477df07de15.json
additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
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  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acd57c85343afac25ee88c7b23eda35c0b240a441803c183502c812f0ec1dce. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2378125f-b3b7-44de-b854-e477df07de15.json and https://artists.proofprofile.net/proofs/artist/2378125f-b3b7-44de-b854-e477df07de15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x9acd57c85343afac25ee88c7b23eda35c0b240a441803c183502c812f0ec1dce","name":"Head West","registered_at":"2026-06-16T01:57:20Z","symbol":"NIM0901400","token_address":"0x1729b4e7abe88068912882137568f19e21a0a571","type":"artist","uuid":"2378125f-b3b7-44de-b854-e477df07de15"}
album: Head West
  type: MusicAlbum
  date published: 2021-06-15
  track: Attention
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200280
    explicit: false
    by artist: Head West
    in album: Head West
      type: MusicAlbum
      date published: 2021-06-15
    isrc code: FR9W17000023
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
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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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5cf2cf880227e742b30bfbe1a9242412abee260f31864de548aeb45e92b8700. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR9W17000023.
      date published: 2026-07-04T11:19:20Z
    audio: Attention
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.89
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.487
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major