Kei
type: MusicGroup
description: Kei or KEI may refer to: People Kei (given name) Kei, Cantonese for Ji (姫) Kei, Cantonese for Qi (奇, 祁, 亓) Shō Kei (1700–1752), king of the Ryūkyū Kingdom Kei (singer) (born 1995), stage name of
popularity: 5
followers: 53
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a3df20a801033881f6d1ce0f3759ef9f9cfd0b22bbdd5ac4ebe2077c3683b30
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39935f9f-4ad2-4347-82ef-9cc1f48e2b4a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/39935f9f-4ad2-4347-82ef-9cc1f48e2b4a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/39935f9f-4ad2-4347-82ef-9cc1f48e2b4a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
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 0x7a3df20a801033881f6d1ce0f3759ef9f9cfd0b22bbdd5ac4ebe2077c3683b30. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39935f9f-4ad2-4347-82ef-9cc1f48e2b4a.json and https://artists.proofprofile.net/proofs/artist/39935f9f-4ad2-4347-82ef-9cc1f48e2b4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
album: Bumper
  type: MusicAlbum
  date published: 2023-03-09
album: Ball Of Sound
  type: MusicAlbum
  date published: 2023-03-31
album: Late on Time
  type: MusicAlbum
  date published: 2024-07-31
album: Backroom Values (Makeup Version)
  type: MusicAlbum
  date published: 2024-09-09