五十川綾
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 4
followers: 36
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a2ad98cdf60cf9159e212e080b13f4a32bc0572040f22d5dddec0466052c170
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/574a81ec-16ac-4b09-ad2c-1757ce5a978c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/574a81ec-16ac-4b09-ad2c-1757ce5a978c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/574a81ec-16ac-4b09-ad2c-1757ce5a978c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5a2ad98cdf60cf9159e212e080b13f4a32bc0572040f22d5dddec0466052c170","name":"五十川綾","registered_at":"2026-06-16T19:59:23Z","symbol":"NIM1159655","token_address":"0x5866996a1e99daefdc4598dc22b92990c1a41af4","type":"artist","uuid":"574a81ec-16ac-4b09-ad2c-1757ce5a978c"}
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 0x5a2ad98cdf60cf9159e212e080b13f4a32bc0572040f22d5dddec0466052c170. 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/574a81ec-16ac-4b09-ad2c-1757ce5a978c.json and https://artists.proofprofile.net/proofs/artist/574a81ec-16ac-4b09-ad2c-1757ce5a978c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x5a2ad98cdf60cf9159e212e080b13f4a32bc0572040f22d5dddec0466052c170","name":"五十川綾","registered_at":"2026-06-16T19:59:23Z","symbol":"NIM1159655","token_address":"0x5866996a1e99daefdc4598dc22b92990c1a41af4","type":"artist","uuid":"574a81ec-16ac-4b09-ad2c-1757ce5a978c"}
album: ふたりのヨコハマものがたり
  type: MusicAlbum
  date published: 2023-11-15
album: ふたりの東京ものがたり
  type: MusicAlbum
  date published: 2025-04-02
  track: ふたりの東京ものがたり
    type: MusicRecording
    duration: PT4M36S
    duration ms: 276641
    explicit: false
    by artist: 五十川綾
    in album: ふたりの東京ものがたり
      type: MusicAlbum
      date published: 2025-04-02
    genre: enka
    genre: kayokyoku
    isrc code: JP92G2514020
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T12:30:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd10323a034eeb4610a9b6abb6824f05353ca69266a61ae73fe1ca73e650f33d8
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92G2514020
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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 0xd10323a034eeb4610a9b6abb6824f05353ca69266a61ae73fe1ca73e650f33d8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JP92G2514020.
      date published: 2026-07-16T16:14:30Z
    audio: ふたりの東京ものがたり
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.993
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.501
      additional property: Energy
        type: PropertyValue
        value: 0.416
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.442
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.073
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.256
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.231
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor