佳館杏ノ助
type: MusicGroup
genre: vocaloid
popularity: 4
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9295c74dba8b866232c9aeb421ecd53f3ac156a6f205fcefa2685c031c010a22
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953896
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953896
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/107e349a-02e3-40bb-a5c6-a80833017857.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/107e349a-02e3-40bb-a5c6-a80833017857.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/107e349a-02e3-40bb-a5c6-a80833017857
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:05:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9295c74dba8b866232c9aeb421ecd53f3ac156a6f205fcefa2685c031c010a22","name":"佳館杏ノ助","registered_at":"2026-06-15T19:21:37Z","symbol":"NIM0806963","token_address":"0xb528f64a68b750cc0e6f8e45c9181dfd90782dc1","type":"artist","uuid":"107e349a-02e3-40bb-a5c6-a80833017857"}
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 0x9295c74dba8b866232c9aeb421ecd53f3ac156a6f205fcefa2685c031c010a22. Chain 2 (Bitcoin): anchored in block 953896 (2026-06-16T06:05:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/107e349a-02e3-40bb-a5c6-a80833017857.json and https://artists.proofprofile.net/proofs/artist/107e349a-02e3-40bb-a5c6-a80833017857.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:05:56Z
  text: {"copyright_id":"0x9295c74dba8b866232c9aeb421ecd53f3ac156a6f205fcefa2685c031c010a22","name":"佳館杏ノ助","registered_at":"2026-06-15T19:21:37Z","symbol":"NIM0806963","token_address":"0xb528f64a68b750cc0e6f8e45c9181dfd90782dc1","type":"artist","uuid":"107e349a-02e3-40bb-a5c6-a80833017857"}