宗谷いちか
type: MusicGroup
popularity: 9
followers: 996
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e77c4f9b23316ee25892f82555aafa287d9f45a406217d6f3d78addc6693c27
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e45eda11-00b6-41d5-b128-f2f1d71fb0d5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e45eda11-00b6-41d5-b128-f2f1d71fb0d5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e45eda11-00b6-41d5-b128-f2f1d71fb0d5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9e77c4f9b23316ee25892f82555aafa287d9f45a406217d6f3d78addc6693c27","name":"宗谷いちか","registered_at":"2026-06-21T08:07:59Z","symbol":"NIM1866726","token_address":"0x9bfc3e8694a9699ba116d33713550b6df3963899","type":"artist","uuid":"e45eda11-00b6-41d5-b128-f2f1d71fb0d5"}
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 0x9e77c4f9b23316ee25892f82555aafa287d9f45a406217d6f3d78addc6693c27. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e45eda11-00b6-41d5-b128-f2f1d71fb0d5.json and https://artists.proofprofile.net/proofs/artist/e45eda11-00b6-41d5-b128-f2f1d71fb0d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x9e77c4f9b23316ee25892f82555aafa287d9f45a406217d6f3d78addc6693c27","name":"宗谷いちか","registered_at":"2026-06-21T08:07:59Z","symbol":"NIM1866726","token_address":"0x9bfc3e8694a9699ba116d33713550b6df3963899","type":"artist","uuid":"e45eda11-00b6-41d5-b128-f2f1d71fb0d5"}
album: 君と未来
  type: MusicAlbum
  date published: 2019-11-01
album: アオイロテイル
  type: MusicAlbum
  date published: 2023-11-02
  track: アオイロテイル
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221666
    explicit: false
    by artist: 宗谷いちか
    in album: アオイロテイル
      type: MusicAlbum
      date published: 2023-11-02
    isrc code: TCJPX2384159
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T10:05:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x97b140a5bb67d73c889833c770316681c133a8ec87b40fc423fc464e81c8ad5b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958867
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958867
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2384159
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T13:04:34Z
    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 0x97b140a5bb67d73c889833c770316681c133a8ec87b40fc423fc464e81c8ad5b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:04:34Z), 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/TCJPX2384159.
      date published: 2026-07-20T13:04:34Z
    audio: アオイロテイル
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.999
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.656
      additional property: Energy
        type: PropertyValue
        value: 0.709
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.123
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.218
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.85
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.952
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: バタフライエフェクト
  type: MusicAlbum
  date published: 2024-01-11
album: 泡影
  type: MusicAlbum
  date published: 2024-06-10
album: DULLY
  type: MusicAlbum
  date published: 2024-07-15
album: ニュー・シネマ
  type: MusicAlbum
  date published: 2024-08-17
album: 青は藍より出でて藍より青し
  type: MusicAlbum
  date published: 2024-09-25
album: 空白
  type: MusicAlbum
  date published: 2024-10-20
  track: 空白
    type: MusicRecording
    duration: PT3M28S
    duration ms: 208750
    explicit: false
    by artist: 宗谷いちか
    in album: 空白
      type: MusicAlbum
      date published: 2024-10-20
    isrc code: TCJPC2428191
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0b568589e4b779f6b81dd7b5611bf8ba91bb91e434595359f4811de899e83d95
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959128
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959128
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPC2428191
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T14:44:21Z
    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 0x0b568589e4b779f6b81dd7b5611bf8ba91bb91e434595359f4811de899e83d95. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:44:21Z), 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/TCJPC2428191.
      date published: 2026-07-22T14:44:21Z
    audio: 空白
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 134.952
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.656
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: 羊のような雲はどこまで

Energy
type: PropertyValue
value: 0.788

Speechiness
type: PropertyValue
value: 0.058

Acousticness
type: PropertyValue
value: 0.155

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.123

Valence (Positivity)
type: PropertyValue
value: 0.821

Loudness (dB)
type: PropertyValue
value: -2.479

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

羊のような雲はどこまで
type: MusicAlbum
date published: 2024-11-03