Helicopter Helicopter
type: MusicGroup
genre: midwest emo
popularity: 10
followers: 1204
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa9cdd31e6862b4cf36819205711078976bbb18fc5942b5a4f5aad53db45d5431
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7480527f-643f-431a-b07c-fd14b06c78b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7480527f-643f-431a-b07c-fd14b06c78b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7480527f-643f-431a-b07c-fd14b06c78b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa9cdd31e6862b4cf36819205711078976bbb18fc5942b5a4f5aad53db45d5431","name":"Helicopter Helicopter","registered_at":"2026-06-17T06:14:09Z","symbol":"NIM1306351","token_address":"0x0bc26dcc4a9c1f9de80da40563757f7089f27142","type":"artist","uuid":"7480527f-643f-431a-b07c-fd14b06c78b7"}
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 0xa9cdd31e6862b4cf36819205711078976bbb18fc5942b5a4f5aad53db45d5431. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7480527f-643f-431a-b07c-fd14b06c78b7.json and https://artists.proofprofile.net/proofs/artist/7480527f-643f-431a-b07c-fd14b06c78b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa9cdd31e6862b4cf36819205711078976bbb18fc5942b5a4f5aad53db45d5431","name":"Helicopter Helicopter","registered_at":"2026-06-17T06:14:09Z","symbol":"NIM1306351","token_address":"0x0bc26dcc4a9c1f9de80da40563757f7089f27142","type":"artist","uuid":"7480527f-643f-431a-b07c-fd14b06c78b7"}
album: Squids And Other Fishes
  type: MusicAlbum
  date published: 1998
album: Analog & Electrical Fields
  type: MusicAlbum
  date published: 1999
album: By Starlight
  type: MusicAlbum
  date published: 2001
  track: By Starlight
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226960
    explicit: false
    by artist: Helicopter Helicopter
    in album: By Starlight
      type: MusicAlbum
      date published: 2001
    genre: midwest emo
    isrc code: US4JE0103104
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T12:26:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb728ec2786047ec7d84ab5f9533db6de75253c8a5ee4025ba338b4f57b4644c7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4JE0103104
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:30:06Z
    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 0xb728ec2786047ec7d84ab5f9533db6de75253c8a5ee4025ba338b4f57b4644c7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:06Z), 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/US4JE0103104.
      date published: 2026-07-15T15:30:06Z
    audio: By Starlight
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.333
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.521
      additional property: Energy
        type: PropertyValue
        value: 0.775
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.091
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.001
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.281
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.914
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Great Big Meaningless
  type: MusicAlbum
  date published: 2002
album: Wild Dogs With X-Ray Eyes
  type: MusicAlbum
  date published: 2004-08-19
album: The Modern World
  type: MusicAlbum
  date published: 2021-07-16