Cousin
type: MusicGroup
genre: kayokyoku
description: A cousin is a relative who is the child of a parent's sibling; this is more specifically referred to as a first cousin. A parent of a first cousin is an aunt or uncle. More generally, in the kinship
popularity: 20
followers: 2108
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81758c8d9ff66b664f35687fd5194e9dc1423e03699a83353a12e34454bd0bba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953621
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953621
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2129d474-dc21-4881-8a79-c5540c924381.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2129d474-dc21-4881-8a79-c5540c924381.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2129d474-dc21-4881-8a79-c5540c924381
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:42:57Z
additional property: OTSCanonicalRecord
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81758c8d9ff66b664f35687fd5194e9dc1423e03699a83353a12e34454bd0bba. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2129d474-dc21-4881-8a79-c5540c924381.json and https://artists.proofprofile.net/proofs/artist/2129d474-dc21-4881-8a79-c5540c924381.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:42:57Z
album: 冬のファンタジー
  type: MusicAlbum
  date published: 1995
album: 彼と彼女の夏
  type: MusicAlbum
  date published: 1995
album: 彼と彼女の夏
  type: MusicAlbum
  date published: 1995-05-21
album: ラブ＆スマイル
  type: MusicAlbum
  date published: 1996
album: ラブ＆スマイル
  type: MusicAlbum
  date published: 1996-05-20
album: ふたりのSomeday
  type: MusicAlbum
  date published: 1997
album: ふたりのSomeday
  type: MusicAlbum
  date published: 1997-01-01
album: トマト ベイビー
  type: MusicAlbum
  date published: 1998
album: おかえりなさい
  type: MusicAlbum
  date published: 2004-01-15
album: 風の街
  type: MusicAlbum
  date published: 2004-07-07
album: 風の唄
  type: MusicAlbum
  date published: 2004-11-25
album: ten
  type: MusicAlbum
  date published: 2006-01-11
album: 僕が君から借りたもの
  type: MusicAlbum
  date published: 2006-08-06
album: Fantastic Christmas
  type: MusicAlbum
  date published: 2006-11-08
album: C1
  type: MusicAlbum
  date published: 2011-12-16
album: C2
  type: MusicAlbum
  date published: 2011-12-16
album: カズン 二重唱 〜 夢色ノート盤
  type: MusicAlbum
  date published: 2015-07-01
album: カズン 二重唱～虹色ノート盤
  type: MusicAlbum
  date published: 2016-02-10
album: 素敵なmusic
  type: MusicAlbum
  date published: 2019-12-01
album: 冬のファンタジー / サイレント ナイト BESTタッグ
  type: MusicAlbum
  date published: 2022-03-09
track: 冬のファンタジー
  type: MusicRecording
  duration: PT4M58S
  duration ms: 298506
  explicit: false
  by artist: Cousin
  in album: 雪のうた
    type: MusicAlbum
    date published: 2012-12-05
  popularity: 2
  isrc code: JPKS09500215
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:55:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7572faec47dcc8bc6ea059cec3dc85e826b96707699dd3183b72a32ec8170791
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPKS09500215
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7572faec47dcc8bc6ea059cec3dc85e826b96707699dd3183b72a32ec8170791. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPKS09500215.
    date published: 2026-07-08T03:20:19Z
  audio: 冬のファンタジー
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.957
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.506
    additional property: Energy
      type: PropertyValue
      value: 0.524
    additional property: Speechiness
      type: PropertyValue
      value: 0.024
    additional property: Acousticness
      type: PropertyValue
      value: 0.559
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.133
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.169
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.484
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major