鈴川絢子
type: MusicGroup
popularity: 30
followers: 924
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5df40a067a96d2393f9a87ddd4625aaf60ddcac811baf633a864fcc8f3d6d5db
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/3215d342-b08e-4554-bf00-4825ee6a00fa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3215d342-b08e-4554-bf00-4825ee6a00fa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3215d342-b08e-4554-bf00-4825ee6a00fa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5df40a067a96d2393f9a87ddd4625aaf60ddcac811baf633a864fcc8f3d6d5db","name":"鈴川絢子","registered_at":"2026-06-11T15:35:23Z","symbol":"NIM0065158","token_address":"0xaf778e9309ec027ff44d9231219b315b0dd30b51","type":"artist","uuid":"3215d342-b08e-4554-bf00-4825ee6a00fa"}
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 0x5df40a067a96d2393f9a87ddd4625aaf60ddcac811baf633a864fcc8f3d6d5db. 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/3215d342-b08e-4554-bf00-4825ee6a00fa.json and https://artists.proofprofile.net/proofs/artist/3215d342-b08e-4554-bf00-4825ee6a00fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x5df40a067a96d2393f9a87ddd4625aaf60ddcac811baf633a864fcc8f3d6d5db","name":"鈴川絢子","registered_at":"2026-06-11T15:35:23Z","symbol":"NIM0065158","token_address":"0xaf778e9309ec027ff44d9231219b315b0dd30b51","type":"artist","uuid":"3215d342-b08e-4554-bf00-4825ee6a00fa"}
album: ふみきりのうた
  type: MusicAlbum
  date published: 2018-06-27
album: ふみきりのうた
  type: MusicAlbum
  date published: 2018-06-27
album: ダブルデッカー
  type: MusicAlbum
  date published: 2020-12-23
album: ダブルデッカー
  type: MusicAlbum
  date published: 2020-12-23
album: GO!新幹線
  type: MusicAlbum
  date published: 2022-10-12
album: ふみきりのうた2
  type: MusicAlbum
  date published: 2023-06-23
album: 駅ナカで会いましょう。
  type: MusicAlbum
  date published: 2024-10-14
  track: 駅ナカで会いましょう。
    type: MusicRecording
    duration: PT5M20S
    duration ms: 320565
    explicit: false
    by artist: 鈴川絢子
    in album: 駅ナカで会いましょう。
      type: MusicAlbum
      date published: 2024-10-14
    isrc code: JPN002400340
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T10:23:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc505b5330177304bb0af00607653340e165f3f1ed50c1ed17595aa2a91f573ab
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958544
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958544
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPN002400340
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T12:14:37Z
    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 0xc505b5330177304bb0af00607653340e165f3f1ed50c1ed17595aa2a91f573ab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPN002400340.
      date published: 2026-07-18T12:14:37Z
    audio: 駅ナカで会いましょう。
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.959
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.645
      additional property: Energy
        type: PropertyValue
        value: 0.953
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.026
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.384
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.15
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 鉄道日本一のうた 2024
  type: MusicAlbum
  date published: 2024-12-25
album: 鉄道日本一のうた 2025
  type: MusicAlbum
  date published: 2025-04-01