ASUKA
type: MusicGroup
popularity: 7
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd2c7330d7499b9709c4e808d5de342fdac22c48f143967799fa40e085780943e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6b440dc-e923-427b-b7cb-7cf71e35f45b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6b440dc-e923-427b-b7cb-7cf71e35f45b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c6b440dc-e923-427b-b7cb-7cf71e35f45b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
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 0xd2c7330d7499b9709c4e808d5de342fdac22c48f143967799fa40e085780943e. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6b440dc-e923-427b-b7cb-7cf71e35f45b.json and https://artists.proofprofile.net/proofs/artist/c6b440dc-e923-427b-b7cb-7cf71e35f45b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T22:44:50Z
album: Drop It
  type: MusicAlbum
  date published: 2018-10-12
album: 君の側に
  type: MusicAlbum
  date published: 2020-08-21
album: Still Alive
  type: MusicAlbum
  date published: 2021-07-09
album: Go! Freshman
  type: MusicAlbum
  date published: 2021-08-03
album: The Storm
  type: MusicAlbum
  date published: 2021-09-28
album: Gray Sky
  type: MusicAlbum
  date published: 2021-12-16
album: 3years old (Piano ver.)
  type: MusicAlbum
  date published: 2022-01-05
album: A$uka Sound
  type: MusicAlbum
  date published: 2022-01-29
album: Pure Love
  type: MusicAlbum
  date published: 2022-08-09
album: Hapjeong Dong Intersection
  type: MusicAlbum
  date published: 2022-10-19
album: Life is
  type: MusicAlbum
  date published: 2023-04-07
album: The Corn
  type: MusicAlbum
  date published: 2024-10-02