ハカネ
type: MusicGroup
popularity: 10
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x07af126987dbeec041e43d8e75af510dca722b935643cb3d51ba2b2344468cfc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x07af126987dbeec041e43d8e75af510dca722b935643cb3d51ba2b2344468cfc","name":"ハカネ","registered_at":"2026-06-20T17:52:00Z","symbol":"NIM1672603","token_address":"0x77f2bb502f07413cf4b3e7ce03b157cb99177890","type":"artist","uuid":"bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af126987dbeec041e43d8e75af510dca722b935643cb3d51ba2b2344468cfc. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33.json and https://artists.proofprofile.net/proofs/artist/bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0x07af126987dbeec041e43d8e75af510dca722b935643cb3d51ba2b2344468cfc","name":"ハカネ","registered_at":"2026-06-20T17:52:00Z","symbol":"NIM1672603","token_address":"0x77f2bb502f07413cf4b3e7ce03b157cb99177890","type":"artist","uuid":"bddb0aca-4fa5-42f8-9e6f-8be1dcfe4e33"}
album: esorauta
  type: MusicAlbum
  date published: 2024-11-27
album: 絵空唄
  type: MusicAlbum
  date published: 2024-11-27
album: さよならまたね
  type: MusicAlbum
  date published: 2025-01-29
album: sayonara matane
  type: MusicAlbum
  date published: 2025-01-29
album: mikansei fantasia
  type: MusicAlbum
  date published: 2025-02-26
album: 未完成ファンタジア
  type: MusicAlbum
  date published: 2025-02-26
album: mirage
  type: MusicAlbum
  date published: 2025-04-02
  track: mirage
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217599
    explicit: false
    by artist: ハカネ
    in album: mirage
      type: MusicAlbum
      date published: 2025-04-02
    isrc code: JPVI02500704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T16:57:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe32d539e994f5bcddda367fd7224bf5cc4ce920d9aee1167e31250c75db6cc74
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVI02500704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d539e994f5bcddda367fd7224bf5cc4ce920d9aee1167e31250c75db6cc74. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPVI02500704.
      date published: 2026-07-03T19:59:51Z
    audio: mirage
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.02
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.766
      additional property: Energy
        type: PropertyValue
        value: 0.61
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.679
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.705
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.655
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 蜃気楼
  type: MusicAlbum
  date published: 2025-04-02
album: mu aijou
  type: MusicAlbum
  date published: 2025-07-23
album: 無愛情
  type: MusicAlbum
  date published: 2025-07-23