はるか
type: MusicGroup
description: REDIRECT Haruka
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe28d5870126d75411a04025a0231f1caa63ae6d10bb7044a4a40e8fa7f7f0c4c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/057dc851-cb9e-425a-99a7-d5cdee494990.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/057dc851-cb9e-425a-99a7-d5cdee494990.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/057dc851-cb9e-425a-99a7-d5cdee494990
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe28d5870126d75411a04025a0231f1caa63ae6d10bb7044a4a40e8fa7f7f0c4c","name":"はるか","registered_at":"2026-06-15T15:31:44Z","symbol":"NIM0752095","token_address":"0x4acf044452c76705f6d663997a2dc0676576cc5a","type":"artist","uuid":"057dc851-cb9e-425a-99a7-d5cdee494990"}
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 0xe28d5870126d75411a04025a0231f1caa63ae6d10bb7044a4a40e8fa7f7f0c4c. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/057dc851-cb9e-425a-99a7-d5cdee494990.json and https://artists.proofprofile.net/proofs/artist/057dc851-cb9e-425a-99a7-d5cdee494990.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xe28d5870126d75411a04025a0231f1caa63ae6d10bb7044a4a40e8fa7f7f0c4c","name":"はるか","registered_at":"2026-06-15T15:31:44Z","symbol":"NIM0752095","token_address":"0x4acf044452c76705f6d663997a2dc0676576cc5a","type":"artist","uuid":"057dc851-cb9e-425a-99a7-d5cdee494990"}