ナト☆カン
type: MusicGroup
popularity: 2
followers: 269
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09c018acae8059f71607b3f55a4c4ff9033fcaf4c142797d607f0505529d29bd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ea6bf55-a24c-44ec-b08d-393e132983f0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ea6bf55-a24c-44ec-b08d-393e132983f0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ea6bf55-a24c-44ec-b08d-393e132983f0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09c018acae8059f71607b3f55a4c4ff9033fcaf4c142797d607f0505529d29bd","name":"ナト☆カン","registered_at":"2026-06-20T04:59:12Z","symbol":"NIM1519298","token_address":"0x7bf2c6e53ab020617b69c9558d671a39948e5aec","type":"artist","uuid":"9ea6bf55-a24c-44ec-b08d-393e132983f0"}
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 0x09c018acae8059f71607b3f55a4c4ff9033fcaf4c142797d607f0505529d29bd. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ea6bf55-a24c-44ec-b08d-393e132983f0.json and https://artists.proofprofile.net/proofs/artist/9ea6bf55-a24c-44ec-b08d-393e132983f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x09c018acae8059f71607b3f55a4c4ff9033fcaf4c142797d607f0505529d29bd","name":"ナト☆カン","registered_at":"2026-06-20T04:59:12Z","symbol":"NIM1519298","token_address":"0x7bf2c6e53ab020617b69c9558d671a39948e5aec","type":"artist","uuid":"9ea6bf55-a24c-44ec-b08d-393e132983f0"}
album: 一つ一つの絆
  type: MusicAlbum
  date published: 2017-04-26
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  type: MusicAlbum
  date published: 2018-01-31
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  type: MusicAlbum
  date published: 2021-01-27
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  type: MusicAlbum
  date published: 2023-07-07
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  type: MusicAlbum
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