ホッコータルマエ (CV. 菊池紗矢香)
type: MusicGroup
popularity: 4
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb93d3992cf6dc92f4d6b6a8da7b54922b5adadb20c1134fbc8e49944522c07ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb492d9c-a4c8-485b-b59e-b5bc6b50c900.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb492d9c-a4c8-485b-b59e-b5bc6b50c900.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb492d9c-a4c8-485b-b59e-b5bc6b50c900
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb93d3992cf6dc92f4d6b6a8da7b54922b5adadb20c1134fbc8e49944522c07ad","name":"ホッコータルマエ (CV. 菊池紗矢香)","registered_at":"2026-06-20T16:58:43Z","symbol":"NIM1660409","token_address":"0x95622e257d453c3fd016e04fa0c5878c07a9e69c","type":"artist","uuid":"bb492d9c-a4c8-485b-b59e-b5bc6b50c900"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93d3992cf6dc92f4d6b6a8da7b54922b5adadb20c1134fbc8e49944522c07ad. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb492d9c-a4c8-485b-b59e-b5bc6b50c900.json and https://artists.proofprofile.net/proofs/artist/bb492d9c-a4c8-485b-b59e-b5bc6b50c900.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0xb93d3992cf6dc92f4d6b6a8da7b54922b5adadb20c1134fbc8e49944522c07ad","name":"ホッコータルマエ (CV. 菊池紗矢香)","registered_at":"2026-06-20T16:58:43Z","symbol":"NIM1660409","token_address":"0x95622e257d453c3fd016e04fa0c5878c07a9e69c","type":"artist","uuid":"bb492d9c-a4c8-485b-b59e-b5bc6b50c900"}