櫻井桃華 (CV: 照井春佳)
type: MusicGroup
popularity: 15
followers: 135
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd0e91cb992780bf802df3dad1abbc42cb95d00f54376a22d8be5801805a649a6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd18519e-6416-4e7f-b562-a4afcac7a527.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cd18519e-6416-4e7f-b562-a4afcac7a527.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cd18519e-6416-4e7f-b562-a4afcac7a527
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd0e91cb992780bf802df3dad1abbc42cb95d00f54376a22d8be5801805a649a6","name":"櫻井桃華 (CV: 照井春佳)","registered_at":"2026-06-15T02:04:46Z","symbol":"NIM0647818","token_address":"0xb451c40950d1909bea14f0e8490a1bef26ca81a7","type":"artist","uuid":"cd18519e-6416-4e7f-b562-a4afcac7a527"}
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 0xd0e91cb992780bf802df3dad1abbc42cb95d00f54376a22d8be5801805a649a6. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd18519e-6416-4e7f-b562-a4afcac7a527.json and https://artists.proofprofile.net/proofs/artist/cd18519e-6416-4e7f-b562-a4afcac7a527.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:52:51Z
  text: {"copyright_id":"0xd0e91cb992780bf802df3dad1abbc42cb95d00f54376a22d8be5801805a649a6","name":"櫻井桃華 (CV: 照井春佳)","registered_at":"2026-06-15T02:04:46Z","symbol":"NIM0647818","token_address":"0xb451c40950d1909bea14f0e8490a1bef26ca81a7","type":"artist","uuid":"cd18519e-6416-4e7f-b562-a4afcac7a527"}