Yumena Yanai
type: MusicGroup
description: , is a Japanese actress and model. She is signed under the talent agency Irving. Biography Yanai was born on June 21, 2000, in Kōriyama City, Fukushima Prefecture. She is the eldest of four siblin
popularity: 2
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ccf569019dd3b139b9776be92c201ff0ea4296e20b28ed3300ab016bfa64b07
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7ccf569019dd3b139b9776be92c201ff0ea4296e20b28ed3300ab016bfa64b07","name":"Yumena Yanai","registered_at":"2026-06-17T11:12:09Z","symbol":"NIM1377383","token_address":"0x9413a2e4fd480b86454622f98c7dfc31ca48afdf","type":"artist","uuid":"82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67"}
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 0x7ccf569019dd3b139b9776be92c201ff0ea4296e20b28ed3300ab016bfa64b07. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67.json and https://artists.proofprofile.net/proofs/artist/82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x7ccf569019dd3b139b9776be92c201ff0ea4296e20b28ed3300ab016bfa64b07","name":"Yumena Yanai","registered_at":"2026-06-17T11:12:09Z","symbol":"NIM1377383","token_address":"0x9413a2e4fd480b86454622f98c7dfc31ca48afdf","type":"artist","uuid":"82d5a2c4-cdd7-49b2-b898-2b4cd1cc5b67"}
album: つないで
  type: MusicAlbum
  date published: 2025-06-04
album: tsunaide
  type: MusicAlbum
  date published: 2025-06-04