Yuri Dazai
type: MusicGroup
popularity: 7
followers: 88
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffeb9c9684eb588898fa061535bcaa5fa5f3c7f1ea2e8c4a1159dfcc74bb37a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b7aeabc-257f-4427-90f7-49a7f6545d57.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5b7aeabc-257f-4427-90f7-49a7f6545d57.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5b7aeabc-257f-4427-90f7-49a7f6545d57
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xffeb9c9684eb588898fa061535bcaa5fa5f3c7f1ea2e8c4a1159dfcc74bb37a6","name":"Yuri Dazai","registered_at":"2026-06-16T21:48:21Z","symbol":"NIM1185665","token_address":"0x2baae788d8a1afb49ae0c4f7d2d5f8dc0547189d","type":"artist","uuid":"5b7aeabc-257f-4427-90f7-49a7f6545d57"}
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 0xffeb9c9684eb588898fa061535bcaa5fa5f3c7f1ea2e8c4a1159dfcc74bb37a6. 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/5b7aeabc-257f-4427-90f7-49a7f6545d57.json and https://artists.proofprofile.net/proofs/artist/5b7aeabc-257f-4427-90f7-49a7f6545d57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xffeb9c9684eb588898fa061535bcaa5fa5f3c7f1ea2e8c4a1159dfcc74bb37a6","name":"Yuri Dazai","registered_at":"2026-06-16T21:48:21Z","symbol":"NIM1185665","token_address":"0x2baae788d8a1afb49ae0c4f7d2d5f8dc0547189d","type":"artist","uuid":"5b7aeabc-257f-4427-90f7-49a7f6545d57"}
album: 楽園
  type: MusicAlbum
  date published: 2015-07-30
album: tamayura
  type: MusicAlbum
  date published: 2021-03-10
album: tamayura
  type: MusicAlbum
  date published: 2021-03-10
  track: Yesterday Once More
    type: MusicRecording
    duration: PT5M44S
    duration ms: 344800
    explicit: false
    by artist: Yuri Dazai
    in album: tamayura
      type: MusicAlbum
      date published: 2021-03-10
    isrc code: JPZ922106841
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T19:33:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x4a927a95f8844250feeb2ab82b156aebfec9d952129b7ddcdca6565cdb030859
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958196
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958196
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922106841
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T22:34:32Z
    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 0x4a927a95f8844250feeb2ab82b156aebfec9d952129b7ddcdca6565cdb030859. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:34:32Z), 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/JPZ922106841.
      date published: 2026-07-15T22:34:32Z
    audio: Yesterday Once More
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.929
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.595
      additional property: Energy
        type: PropertyValue
        value: 0.176
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.967
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.014
      additional property: Liveness
        type: PropertyValue
        value: 0.184
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.228
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.116
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: wonderful world
  type: MusicAlbum
  date published: 2021-05-22
album: wonderful world
  type: MusicAlbum
  date published: 2021-05-22
  track: Close to you
    type: MusicRecording
    duration: PT6M56S
    duration ms: 416853
    explicit: false
    by artist: Yuri Dazai
    in album: wonderful world
      type: MusicAlbum
      date published: 2021-05-22
    isrc code: JPZ922106872
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T05:08:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8617490dd438adc6e5c4b17b2574f30d1d59d425eda60a5346677d979f53a6a4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958246
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958246
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922106872
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T08:06:09Z
    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 0x8617490dd438adc6e5c4b17b2574f30d1d59d425eda60a5346677d979f53a6a4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:09Z), 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/JPZ922106872.
      date published: 2026-07-16T08:06:09Z
    audio: Close to you
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.874
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.368
      additional property: Energy
        type: PropertyValue
        value: 0.24
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.953
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: HABANA
album: Paradise
album: Chahaya

Instrumentalness
type: PropertyValue
value: 0.028

Liveness
type: PropertyValue
value: 0.073

Valence (Positivity)
type: PropertyValue
value: 0.141

Loudness (dB)
type: PropertyValue
value: -12.705

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

HABANA
type: MusicAlbum
date published: 2021-07-25

HABANA
type: MusicAlbum
date published: 2021-07-25

Paradise
type: MusicAlbum
date published: 2021-08-10

Chahaya
type: MusicAlbum
date published: 2021-10-23

Chahaya
type: MusicAlbum
date published: 2021-10-23