桜花
type: MusicGroup
popularity: 3
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcab8d3d64e8be68e357e5ba72d986e3b3eeb73e59c5ab18820acfd5018e8f1ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1eee093-08da-4ae1-a3d5-358bec55ef08.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b1eee093-08da-4ae1-a3d5-358bec55ef08.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b1eee093-08da-4ae1-a3d5-358bec55ef08
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcab8d3d64e8be68e357e5ba72d986e3b3eeb73e59c5ab18820acfd5018e8f1ff","name":"桜花","registered_at":"2026-06-20T12:44:42Z","symbol":"NIM1615532","token_address":"0x9fec6d0efbdead2a1918bd0292954458b1dc9d21","type":"artist","uuid":"b1eee093-08da-4ae1-a3d5-358bec55ef08"}
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 0xcab8d3d64e8be68e357e5ba72d986e3b3eeb73e59c5ab18820acfd5018e8f1ff. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1eee093-08da-4ae1-a3d5-358bec55ef08.json and https://artists.proofprofile.net/proofs/artist/b1eee093-08da-4ae1-a3d5-358bec55ef08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xcab8d3d64e8be68e357e5ba72d986e3b3eeb73e59c5ab18820acfd5018e8f1ff","name":"桜花","registered_at":"2026-06-20T12:44:42Z","symbol":"NIM1615532","token_address":"0x9fec6d0efbdead2a1918bd0292954458b1dc9d21","type":"artist","uuid":"b1eee093-08da-4ae1-a3d5-358bec55ef08"}
album: 花筐 (はなかご)
  type: MusicAlbum
  date published: 2024-06-28
album: 地震封じの呪文
  type: MusicAlbum
  date published: 2025-02-19