皆川純子 (ミケル)
type: MusicGroup
genre: anime
popularity: 3
followers: 99
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e07fe37d919a7cc516d1e8d42f13a38d9c52acc4c335b499bf12aa5599be858
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c577b59-95dc-43c0-8cba-a87642a389e5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9c577b59-95dc-43c0-8cba-a87642a389e5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9c577b59-95dc-43c0-8cba-a87642a389e5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4e07fe37d919a7cc516d1e8d42f13a38d9c52acc4c335b499bf12aa5599be858","name":"皆川純子 (ミケル)","registered_at":"2026-06-20T04:08:51Z","symbol":"NIM1506856","token_address":"0x13b2845f16d41931c406ba5afac3e2bc48cf83fb","type":"artist","uuid":"9c577b59-95dc-43c0-8cba-a87642a389e5"}
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 0x4e07fe37d919a7cc516d1e8d42f13a38d9c52acc4c335b499bf12aa5599be858. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c577b59-95dc-43c0-8cba-a87642a389e5.json and https://artists.proofprofile.net/proofs/artist/9c577b59-95dc-43c0-8cba-a87642a389e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T05:07:36Z
  text: {"copyright_id":"0x4e07fe37d919a7cc516d1e8d42f13a38d9c52acc4c335b499bf12aa5599be858","name":"皆川純子 (ミケル)","registered_at":"2026-06-20T04:08:51Z","symbol":"NIM1506856","token_address":"0x13b2845f16d41931c406ba5afac3e2bc48cf83fb","type":"artist","uuid":"9c577b59-95dc-43c0-8cba-a87642a389e5"}