カルテットスター(cv.日比優理香、鈴木杏奈、徳井青空、和多田美咲)
type: MusicGroup
popularity: 17
followers: 107
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x501994d4387861d329f47f0a45421b647fdf33d1bb2919d483e3c1cc29c9357c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953758
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953758
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1d529dd-2f62-4d5b-81b6-d968b5edf329.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1d529dd-2f62-4d5b-81b6-d968b5edf329.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b1d529dd-2f62-4d5b-81b6-d968b5edf329
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x501994d4387861d329f47f0a45421b647fdf33d1bb2919d483e3c1cc29c9357c","name":"カルテットスター(cv.日比優理香、鈴木杏奈、徳井青空、和多田美咲)","registered_at":"2026-06-14T23:08:30Z","symbol":"NIM0605683","token_address":"0x0cc8e8f95e5246f52ac2784ad385e314f702e025","type":"artist","uuid":"b1d529dd-2f62-4d5b-81b6-d968b5edf329"}
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 0x501994d4387861d329f47f0a45421b647fdf33d1bb2919d483e3c1cc29c9357c. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1d529dd-2f62-4d5b-81b6-d968b5edf329.json and https://artists.proofprofile.net/proofs/artist/b1d529dd-2f62-4d5b-81b6-d968b5edf329.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T07:48:25Z
  text: {"copyright_id":"0x501994d4387861d329f47f0a45421b647fdf33d1bb2919d483e3c1cc29c9357c","name":"カルテットスター(cv.日比優理香、鈴木杏奈、徳井青空、和多田美咲)","registered_at":"2026-06-14T23:08:30Z","symbol":"NIM0605683","token_address":"0x0cc8e8f95e5246f52ac2784ad385e314f702e025","type":"artist","uuid":"b1d529dd-2f62-4d5b-81b6-d968b5edf329"}