カンナ(CV:松岡美里)
type: MusicGroup
popularity: 13
followers: 126
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf2399722c6bc443c957ae2e47c5afb19122a02180aa71595830cb0c81d8f1433
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953730
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953730
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94e350a1-ca0a-428e-a683-894605a6ff90.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/94e350a1-ca0a-428e-a683-894605a6ff90.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/94e350a1-ca0a-428e-a683-894605a6ff90
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:47:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf2399722c6bc443c957ae2e47c5afb19122a02180aa71595830cb0c81d8f1433","name":"カンナ(CV:松岡美里)","registered_at":"2026-06-14T20:09:58Z","symbol":"NIM0563075","token_address":"0x680b6365cc4751b555030d59b4382d101bcb331c","type":"artist","uuid":"94e350a1-ca0a-428e-a683-894605a6ff90"}
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 0xf2399722c6bc443c957ae2e47c5afb19122a02180aa71595830cb0c81d8f1433. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94e350a1-ca0a-428e-a683-894605a6ff90.json and https://artists.proofprofile.net/proofs/artist/94e350a1-ca0a-428e-a683-894605a6ff90.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T02:47:28Z
  text: {"copyright_id":"0xf2399722c6bc443c957ae2e47c5afb19122a02180aa71595830cb0c81d8f1433","name":"カンナ(CV:松岡美里)","registered_at":"2026-06-14T20:09:58Z","symbol":"NIM0563075","token_address":"0x680b6365cc4751b555030d59b4382d101bcb331c","type":"artist","uuid":"94e350a1-ca0a-428e-a683-894605a6ff90"}
album: ブルーアーカイブ 絆ダイアローグ (Vol.9 「カンナ」)
  type: MusicAlbum
  date published: 2025-01-19