さよならグラビティ
type: MusicGroup
popularity: 22
followers: 1175
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4978eeaf50cce764fc61bedbe426de3ed7f08db64645b02b639acf9deec02fd1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bece3a6-4cc8-4813-bb09-b0def04d5bc1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bece3a6-4cc8-4813-bb09-b0def04d5bc1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3bece3a6-4cc8-4813-bb09-b0def04d5bc1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4978eeaf50cce764fc61bedbe426de3ed7f08db64645b02b639acf9deec02fd1","name":"さよならグラビティ","registered_at":"2026-06-11T17:08:58Z","symbol":"NIM0077579","token_address":"0xd81d213079ede33be9f7bbea853d0be06bbec12b","type":"artist","uuid":"3bece3a6-4cc8-4813-bb09-b0def04d5bc1"}
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 0x4978eeaf50cce764fc61bedbe426de3ed7f08db64645b02b639acf9deec02fd1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bece3a6-4cc8-4813-bb09-b0def04d5bc1.json and https://artists.proofprofile.net/proofs/artist/3bece3a6-4cc8-4813-bb09-b0def04d5bc1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x4978eeaf50cce764fc61bedbe426de3ed7f08db64645b02b639acf9deec02fd1","name":"さよならグラビティ","registered_at":"2026-06-11T17:08:58Z","symbol":"NIM0077579","token_address":"0xd81d213079ede33be9f7bbea853d0be06bbec12b","type":"artist","uuid":"3bece3a6-4cc8-4813-bb09-b0def04d5bc1"}
album: Supernova [モンソニ!]
  type: MusicAlbum
  date published: 2024-07-12
album: Supernova [MONSONI!]
  type: MusicAlbum
  date published: 2024-07-12
  track: Supernova
    type: MusicRecording
    duration: PT3M14S
    duration ms: 194700
    explicit: false
    by artist: さよならグラビティ
    in album: Supernova [MONSONI!]
      type: MusicAlbum
      date published: 2024-07-12
    isrc code: JPW372400099
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T08:23:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xcfed3ef50b53b23cbc5f5675c08a414cb07eff52fdbf8ee38bc93a9bf953767f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958268
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958268
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPW372400099
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T11:26:43Z
    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 0xcfed3ef50b53b23cbc5f5675c08a414cb07eff52fdbf8ee38bc93a9bf953767f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:26:43Z), 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/JPW372400099.
      date published: 2026-07-16T11:26:43Z
    audio: Supernova
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 162.099
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.569
      additional property: Energy
        type: PropertyValue
        value: 0.905
      additional property: Speechiness
        type: PropertyValue
        value: 0.061
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.35
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.652
      additional property: Loudness (dB)
        type: PropertyValue
        value: -3.863
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major