レトロ猫
type: MusicGroup
genre: kayokyoku
popularity: 2
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3fc99f3a88be251666f2153d2d570385dc0c9d2bfe804099a92881a91486179
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/ba178253-2774-4491-a6ab-0450dd0e949f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ba178253-2774-4491-a6ab-0450dd0e949f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ba178253-2774-4491-a6ab-0450dd0e949f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3fc99f3a88be251666f2153d2d570385dc0c9d2bfe804099a92881a91486179","name":"レトロ猫","registered_at":"2026-06-20T16:12:19Z","symbol":"NIM1654229","token_address":"0x446ea7d3313751e7c50a7de28325876f479a09aa","type":"artist","uuid":"ba178253-2774-4491-a6ab-0450dd0e949f"}
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 0xc3fc99f3a88be251666f2153d2d570385dc0c9d2bfe804099a92881a91486179. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba178253-2774-4491-a6ab-0450dd0e949f.json and https://artists.proofprofile.net/proofs/artist/ba178253-2774-4491-a6ab-0450dd0e949f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0xc3fc99f3a88be251666f2153d2d570385dc0c9d2bfe804099a92881a91486179","name":"レトロ猫","registered_at":"2026-06-20T16:12:19Z","symbol":"NIM1654229","token_address":"0x446ea7d3313751e7c50a7de28325876f479a09aa","type":"artist","uuid":"ba178253-2774-4491-a6ab-0450dd0e949f"}
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  type: MusicAlbum
  date published: 2025-10-18
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  type: MusicAlbum
  date published: 2025-10-20
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  type: MusicAlbum
  date published: 2025-10-20
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  type: MusicAlbum
  date published: 2025-10-20
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-11-09