オトクロ
type: MusicGroup
genre: city pop
genre: j-r&b
popularity: 2
followers: 89
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf43cb60cfc394921b90ef6041cf70a6d41d46a3a542d71ef37aaa07cf57ed399
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a038dca-3680-4781-8ac0-b4189a85e276.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a038dca-3680-4781-8ac0-b4189a85e276.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9a038dca-3680-4781-8ac0-b4189a85e276
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf43cb60cfc394921b90ef6041cf70a6d41d46a3a542d71ef37aaa07cf57ed399","name":"オトクロ","registered_at":"2026-06-17T19:22:32Z","symbol":"NIM1494344","token_address":"0x15dae29618d9a0495a1531f2566b611e5e415c3b","type":"artist","uuid":"9a038dca-3680-4781-8ac0-b4189a85e276"}
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 0xf43cb60cfc394921b90ef6041cf70a6d41d46a3a542d71ef37aaa07cf57ed399. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a038dca-3680-4781-8ac0-b4189a85e276.json and https://artists.proofprofile.net/proofs/artist/9a038dca-3680-4781-8ac0-b4189a85e276.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xf43cb60cfc394921b90ef6041cf70a6d41d46a3a542d71ef37aaa07cf57ed399","name":"オトクロ","registered_at":"2026-06-17T19:22:32Z","symbol":"NIM1494344","token_address":"0x15dae29618d9a0495a1531f2566b611e5e415c3b","type":"artist","uuid":"9a038dca-3680-4781-8ac0-b4189a85e276"}
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  type: MusicAlbum
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