ケイタク
type: MusicGroup
popularity: 4
followers: 132
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaba76a3f09f9276bab1fe27f664448a823ab190c65bb598f57c4a08f73cc29d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954580
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954580
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b6b49e65-390e-4597-902c-d6d675194d18.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b6b49e65-390e-4597-902c-d6d675194d18.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b6b49e65-390e-4597-902c-d6d675194d18
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T17:48:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaba76a3f09f9276bab1fe27f664448a823ab190c65bb598f57c4a08f73cc29d2","name":"ケイタク","registered_at":"2026-06-20T15:14:47Z","symbol":"NIM1639452","token_address":"0x6a79dc6255162968f0d68e2cf3f5830b28b186a1","type":"artist","uuid":"b6b49e65-390e-4597-902c-d6d675194d18"}
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 0xaba76a3f09f9276bab1fe27f664448a823ab190c65bb598f57c4a08f73cc29d2. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6b49e65-390e-4597-902c-d6d675194d18.json and https://artists.proofprofile.net/proofs/artist/b6b49e65-390e-4597-902c-d6d675194d18.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T17:48:00Z
  text: {"copyright_id":"0xaba76a3f09f9276bab1fe27f664448a823ab190c65bb598f57c4a08f73cc29d2","name":"ケイタク","registered_at":"2026-06-20T15:14:47Z","symbol":"NIM1639452","token_address":"0x6a79dc6255162968f0d68e2cf3f5830b28b186a1","type":"artist","uuid":"b6b49e65-390e-4597-902c-d6d675194d18"}
album: ケイタク三昧
  type: MusicAlbum
  date published: 2004-04-07
album: 泣き方、笑い方…。
  type: MusicAlbum
  date published: 2004-11-24
album: GIFT
  type: MusicAlbum
  date published: 2005-01-26
album: 冒険者/最果て
  type: MusicAlbum
  date published: 2007-12-05
album: self
  type: MusicAlbum
  date published: 2008-01-23
album: Hello!
  type: MusicAlbum
  date published: 2011-05-31
album: What’s up?
  type: MusicAlbum
  date published: 2011-11-06
album: Fine thank you!
  type: MusicAlbum
  date published: 2012-05-26
album: Hajimari no uta
  type: MusicAlbum
  date published: 2012-09-01
album: By the way
  type: MusicAlbum
  date published: 2013-01-26
album: GOOD MUSIC
  type: MusicAlbum
  date published: 2014-02-05
album: BECAUSE
  type: MusicAlbum
  date published: 2014-09-27
album: マスター
  type: MusicAlbum
  date published: 2015-05-31
album: VARIETY SOUND
  type: MusicAlbum
  date published: 2015-11-15
album: ハイライト
  type: MusicAlbum
  date published: 2016-07-15
album: 空と風と僕
  type: MusicAlbum
  date published: 2017-11-09
album: take a BREATH
  type: MusicAlbum
  date published: 2019-04-30
album: 明日の行方
  type: MusicAlbum
  date published: 2023-04-15