Sakamata Chloe
type: MusicGroup
description: is a Japanese VTuber, singer, and songwriter. A member of HoloX, she was active with Cover Corporation's Hololive Production agency from 2021 until stopping her activities in 2025, though she remains
popularity: 6
followers: 189
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b9117601f5a261d074565caccb072f7df8627ead1d0c6d7ad737f06795ef087
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954025
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954025
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38c04e66-7b03-4769-b134-ebcf279c0170.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38c04e66-7b03-4769-b134-ebcf279c0170.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/38c04e66-7b03-4769-b134-ebcf279c0170
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:32:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9b9117601f5a261d074565caccb072f7df8627ead1d0c6d7ad737f06795ef087","name":"Sakamata Chloe","registered_at":"2026-06-16T09:19:08Z","symbol":"NIM1006894","token_address":"0x783da534f8fffc0516f2313ca3f1faad1ee2edb1","type":"artist","uuid":"38c04e66-7b03-4769-b134-ebcf279c0170"}
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 0x9b9117601f5a261d074565caccb072f7df8627ead1d0c6d7ad737f06795ef087. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38c04e66-7b03-4769-b134-ebcf279c0170.json and https://artists.proofprofile.net/proofs/artist/38c04e66-7b03-4769-b134-ebcf279c0170.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x9b9117601f5a261d074565caccb072f7df8627ead1d0c6d7ad737f06795ef087","name":"Sakamata Chloe","registered_at":"2026-06-16T09:19:08Z","symbol":"NIM1006894","token_address":"0x783da534f8fffc0516f2313ca3f1faad1ee2edb1","type":"artist","uuid":"38c04e66-7b03-4769-b134-ebcf279c0170"}