世良譲
type: MusicGroup
genre: shibuya-kei
popularity: 10
followers: 468
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xed3813e70aa328fca939309e13b85e53234c4583c447979ac2b6fa7108e671f2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953982
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953982
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ba7b191-0f76-4067-9e49-541d07faf27f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ba7b191-0f76-4067-9e49-541d07faf27f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2ba7b191-0f76-4067-9e49-541d07faf27f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:42:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xed3813e70aa328fca939309e13b85e53234c4583c447979ac2b6fa7108e671f2","name":"世良譲","registered_at":"2026-06-16T05:03:02Z","symbol":"NIM0945737","token_address":"0x402ca285376a24b1ff52655f3ba8d7d0ce5ff13a","type":"artist","uuid":"2ba7b191-0f76-4067-9e49-541d07faf27f"}
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 0xed3813e70aa328fca939309e13b85e53234c4583c447979ac2b6fa7108e671f2. Chain 2 (Bitcoin): anchored in block 953982 (2026-06-16T17:42:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ba7b191-0f76-4067-9e49-541d07faf27f.json and https://artists.proofprofile.net/proofs/artist/2ba7b191-0f76-4067-9e49-541d07faf27f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T17:42:23Z
  text: {"copyright_id":"0xed3813e70aa328fca939309e13b85e53234c4583c447979ac2b6fa7108e671f2","name":"世良譲","registered_at":"2026-06-16T05:03:02Z","symbol":"NIM0945737","token_address":"0x402ca285376a24b1ff52655f3ba8d7d0ce5ff13a","type":"artist","uuid":"2ba7b191-0f76-4067-9e49-541d07faf27f"}
album: 世良 譲 リサイタル 〜酒と女の日々〜
  type: MusicAlbum
  date published: 1991-09-21
album: Smoke Rings
  type: MusicAlbum
  date published: 2008-03-26
  track: Under the Blanket of Blue
    type: MusicRecording
    duration: PT3M35S
    duration ms: 215180
    explicit: false
    by artist: 世良譲
    in album: Smoke Rings
      type: MusicAlbum
      date published: 2008-03-26
    genre: shibuya-kei
    isrc code: JPG920700866
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T00:59:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x725cd5c9870e30b080c53be4770a56fb4df8551ba50346a51953d809e763c4df
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956440
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956440
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG920700866
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T04:03:57Z
    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 0x725cd5c9870e30b080c53be4770a56fb4df8551ba50346a51953d809e763c4df. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPG920700866.
      date published: 2026-07-03T04:03:57Z
    audio: Under the Blanket of Blue
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 78.656
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.568
      additional property: Energy
        type: PropertyValue
        value: 0.058
      additional property: Speechiness
        type: PropertyValue
        value: 0.051
      additional property: Acousticness
        type: PropertyValue
        value: 0.985
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.898
      additional property: Liveness
        type: PropertyValue
        value: 0.104
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.412
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.601
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: That Old Feeling
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177053
    explicit: false
    by artist: 世良譲
    in album: Smoke Rings
      type: MusicAlbum
      date published: 2008-03-26
    genre: shibuya-kei
    isrc code: JPG920700869
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T19:28:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x27bf42d8a06326927b2eaa364d219fea8f891cec7b31621f7cd483b948ba6d66
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958448
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958448
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPG920700869
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:49:21Z
    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 0x27bf42d8a06326927b2eaa364d219fea8f891cec7b31621f7cd483b948ba6d66. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPG920700869.
      date published: 2026-07-17T19:49:21Z
    audio: That Old Feeling
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.136
      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: 0.627
      additional property: Energy
        type: PropertyValue
        value: 0.123
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.934
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.162
      additional property: Liveness
        type: PropertyValue
        value: 0.103
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: バッカス・グルーヴ

Valence (Positivity)
type: PropertyValue
value: 0.552

Loudness (dB)
type: PropertyValue
value: -20.409

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Major

バッカス・グルーヴ
type: MusicAlbum
date published: 2008-05-21