HGCProd
type: MusicGroup
genre: dark ambient
popularity: 2
followers: 79
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x61d09b9d4bf2d8a3b1277d7d62dbdd7f5f1a1ed7531dfb483b304ebeb1763b9b
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/72945d36-b96a-4ac6-83f5-77468129e0c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72945d36-b96a-4ac6-83f5-77468129e0c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/72945d36-b96a-4ac6-83f5-77468129e0c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x61d09b9d4bf2d8a3b1277d7d62dbdd7f5f1a1ed7531dfb483b304ebeb1763b9b. 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/72945d36-b96a-4ac6-83f5-77468129e0c4.json and https://artists.proofprofile.net/proofs/artist/72945d36-b96a-4ac6-83f5-77468129e0c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Blank Slate
  type: MusicAlbum
  date published: 2022-04-25
album: explorations
  type: MusicAlbum
  date published: 2022-07-29
album: Inverted Sunshine
  type: MusicAlbum
  date published: 2023-02-10
album: glass half empty
  type: MusicAlbum
  date published: 2023-04-26
album: Glass Half Empty
  type: MusicAlbum
  date published: 2023-04-26
album: daylight savings
  type: MusicAlbum
  date published: 2023-12-22
album: skyline
  type: MusicAlbum
  date published: 2024-01-12
album: brunch
  type: MusicAlbum
  date published: 2024-02-02
album: stepping stones
  type: MusicAlbum
  date published: 2024-05-30
album: can you feel the breeze?
  type: MusicAlbum
  date published: 2024-06-07
album: low power mode
  type: MusicAlbum
  date published: 2024-06-10
album: wake up
  type: MusicAlbum
  date published: 2024-06-28
  track: wake up
    type: MusicRecording
    duration: PT1M35S
    duration ms: 95094
    explicit: false
    by artist: HGCProd
    in album: wake up
      type: MusicAlbum
      date published: 2024-06-28
    genre: dark ambient
    isrc code: QZNWX2416697
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T00:06:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x49e5b16865e1b213d4bd0cd92d4a3d00a6d4e1d925c8f135c72db311906e4929
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958943
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958943
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2416697
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T00:27:37Z
    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 0x49e5b16865e1b213d4bd0cd92d4a3d00a6d4e1d925c8f135c72db311906e4929. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNWX2416697.
      date published: 2026-07-21T00:27:37Z
    audio: wake up
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.008
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.578
      additional property: Energy
        type: PropertyValue
        value: 0.076
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.971
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.931
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.056
      additional property: Loudness (dB)
        type: PropertyValue
        value: -24.998
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: see you again
  type: MusicAlbum
  date published: 2024-07-05
album: stargazing
  type: MusicAlbum
  date published: 2024-07-12
album: moonlight
  type: MusicAlbum
  date published: 2024-07-19
album: empty
  type: MusicAlbum
  date published: 2024-07-26
album: lost
  type: MusicAlbum
  date published: 2024-08-02
album: endless
  type: MusicAlbum
  date published: 2024-08-23