Hirune
type: MusicGroup
popularity: 4
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd81a91995ff5c5cc4feea58e0df56513679f5bd7962463ded8eb42cb99760b14
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b5fc05e-c756-40f9-9f1e-2469f8c39e9d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b5fc05e-c756-40f9-9f1e-2469f8c39e9d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3b5fc05e-c756-40f9-9f1e-2469f8c39e9d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
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 0xd81a91995ff5c5cc4feea58e0df56513679f5bd7962463ded8eb42cb99760b14. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b5fc05e-c756-40f9-9f1e-2469f8c39e9d.json and https://artists.proofprofile.net/proofs/artist/3b5fc05e-c756-40f9-9f1e-2469f8c39e9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
album: It was when
  type: MusicAlbum
  date published: 2024-09-10
album: Tenebris
  type: MusicAlbum
  date published: 2025-06-09
  track: Velox
    type: MusicRecording
    duration: PT1M5S
    duration ms: 65217
    explicit: false
    by artist: Hirune
    in album: Tenebris
      type: MusicAlbum
      date published: 2025-06-09
    isrc code: CAGOO2558899
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T13:06:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8f78c9b4852acde1c757ff06c673496188347e7da19662cc3ff619913777d9f4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958303
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958303
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAGOO2558899
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:39:24Z
    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 0x8f78c9b4852acde1c757ff06c673496188347e7da19662cc3ff619913777d9f4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CAGOO2558899.
      date published: 2026-07-16T16:39:24Z
    audio: Velox
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 91.977
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.575
      additional property: Energy
        type: PropertyValue
        value: 0.699
      additional property: Speechiness
        type: PropertyValue
        value: 0.08
      additional property: Acousticness
        type: PropertyValue
        value: 0.06
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.908
      additional property: Liveness
        type: PropertyValue
        value: 0.215
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.879
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.235
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major