koma'n
type: MusicGroup
genre: vocaloid
popularity: 8
followers: 612
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fe90879a8852811b71bcc7590d35f7f520c1c9571a803dec8e5e87cacd8269a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7067b66a-ec26-4b3f-bdbd-199818de7613.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7067b66a-ec26-4b3f-bdbd-199818de7613.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7067b66a-ec26-4b3f-bdbd-199818de7613
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe90879a8852811b71bcc7590d35f7f520c1c9571a803dec8e5e87cacd8269a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7067b66a-ec26-4b3f-bdbd-199818de7613.json and https://artists.proofprofile.net/proofs/artist/7067b66a-ec26-4b3f-bdbd-199818de7613.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Pastel Penguin
  type: MusicAlbum
  date published: 2014-04-02
album: Pastel Penguin
  type: MusicAlbum
  date published: 2014-04-30
album: 次、渋谷
  type: MusicAlbum
  date published: 2014-08-27
album: 次、渋谷
  type: MusicAlbum
  date published: 2014-08-27
album: So-You-Mon
  type: MusicAlbum
  date published: 2015-03-18
album: So-You-Mon
  type: MusicAlbum
  date published: 2015-03-18
album: 今日を取り戻せ!
  type: MusicAlbum
  date published: 2016-01-06
album: 今日を取り戻せ！
  type: MusicAlbum
  date published: 2016-01-20
album: セヴンティーン・オクロック
  type: MusicAlbum
  date published: 2016-11-23
album: セヴンティーン・オクロック
  type: MusicAlbum
  date published: 2016-11-23