Helicopter Secondhand
type: MusicGroup
popularity: 3
followers: 186
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc712fa5e16d94da071a46ebeefcde151e1034341e7f637e0ebba99c3d4643f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8552ea9c-4efb-4835-a412-3b762f2bfb4e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8552ea9c-4efb-4835-a412-3b762f2bfb4e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8552ea9c-4efb-4835-a412-3b762f2bfb4e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc712fa5e16d94da071a46ebeefcde151e1034341e7f637e0ebba99c3d4643f2","name":"Helicopter Secondhand","registered_at":"2026-06-17T11:56:53Z","symbol":"NIM1388054","token_address":"0x2187dc1776f4f6dbd72ac9cdd8a35c18b73c6d27","type":"artist","uuid":"8552ea9c-4efb-4835-a412-3b762f2bfb4e"}
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 0xfc712fa5e16d94da071a46ebeefcde151e1034341e7f637e0ebba99c3d4643f2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8552ea9c-4efb-4835-a412-3b762f2bfb4e.json and https://artists.proofprofile.net/proofs/artist/8552ea9c-4efb-4835-a412-3b762f2bfb4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xfc712fa5e16d94da071a46ebeefcde151e1034341e7f637e0ebba99c3d4643f2","name":"Helicopter Secondhand","registered_at":"2026-06-17T11:56:53Z","symbol":"NIM1388054","token_address":"0x2187dc1776f4f6dbd72ac9cdd8a35c18b73c6d27","type":"artist","uuid":"8552ea9c-4efb-4835-a412-3b762f2bfb4e"}
album: Suriya Andaman Mandalay
  type: MusicAlbum
  date published: 2023-09-29
album: Nobi Kun
  type: MusicAlbum
  date published: 2023-10-06
album: มอมแมม
  type: MusicAlbum
  date published: 2025-05-16
  track: มอมแมม
    type: MusicRecording
    duration: PT3M46S
    duration ms: 226285
    explicit: false
    by artist: Helicopter Secondhand
    in album: มอมแมม
      type: MusicAlbum
      date published: 2025-05-16
    isrc code: QM6P42575674
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T02:47:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbb7332c4ac87114fc89aff8386ce515b19854872bd2cada367980636b5711ffb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958650
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958650
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6P42575674
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T03:36:41Z
    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 0xbb7332c4ac87114fc89aff8386ce515b19854872bd2cada367980636b5711ffb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6P42575674.
      date published: 2026-07-19T03:36:41Z
    audio: มอมแมม
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.991
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.812
      additional property: Energy
        type: PropertyValue
        value: 0.529
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.194
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.009
      additional property: Liveness
        type: PropertyValue
        value: 0.092
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.793
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.497
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Helicopter Secondhand (Live in Chiang Mai Countdown 2025)
  type: MusicAlbum
  date published: 2025-08-29