赤坂達三（クラリネット）
type: MusicGroup
popularity: 2
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23d2ece7ec8ec66c61e6362b52ed29d93386fa3267a01f69d39167f4554a98b0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1855c9b6-214a-47a9-8ff4-4fd34d258e5b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1855c9b6-214a-47a9-8ff4-4fd34d258e5b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1855c9b6-214a-47a9-8ff4-4fd34d258e5b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x23d2ece7ec8ec66c61e6362b52ed29d93386fa3267a01f69d39167f4554a98b0","name":"赤坂達三（クラリネット）","registered_at":"2026-06-15T22:17:15Z","symbol":"NIM0848829","token_address":"0xcc2c61a892c59424000a0fb69c51d483e2bbc5f6","type":"artist","uuid":"1855c9b6-214a-47a9-8ff4-4fd34d258e5b"}
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 0x23d2ece7ec8ec66c61e6362b52ed29d93386fa3267a01f69d39167f4554a98b0. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1855c9b6-214a-47a9-8ff4-4fd34d258e5b.json and https://artists.proofprofile.net/proofs/artist/1855c9b6-214a-47a9-8ff4-4fd34d258e5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x23d2ece7ec8ec66c61e6362b52ed29d93386fa3267a01f69d39167f4554a98b0","name":"赤坂達三（クラリネット）","registered_at":"2026-06-15T22:17:15Z","symbol":"NIM0848829","token_address":"0xcc2c61a892c59424000a0fb69c51d483e2bbc5f6","type":"artist","uuid":"1855c9b6-214a-47a9-8ff4-4fd34d258e5b"}
album: Czardas
  type: MusicAlbum
  date published: 2017-07-25
album: チャールダーシュ
  type: MusicAlbum
  date published: 2017-07-25