オバチャーン
type: MusicGroup
popularity: 2
followers: 37
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe98d3031b3c967e743de7a27b766b1eb1e4fc41ca11b8c85c3074116f8c9fdbe
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03ebbce8-b668-4ccb-8d59-67677f05517f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/03ebbce8-b668-4ccb-8d59-67677f05517f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/03ebbce8-b668-4ccb-8d59-67677f05517f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe98d3031b3c967e743de7a27b766b1eb1e4fc41ca11b8c85c3074116f8c9fdbe","name":"オバチャーン","registered_at":"2026-06-15T14:57:36Z","symbol":"NIM0743955","token_address":"0x3e1c6c7986bf8a25b9e3c8526c78c40514679106","type":"artist","uuid":"03ebbce8-b668-4ccb-8d59-67677f05517f"}
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 0xe98d3031b3c967e743de7a27b766b1eb1e4fc41ca11b8c85c3074116f8c9fdbe. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03ebbce8-b668-4ccb-8d59-67677f05517f.json and https://artists.proofprofile.net/proofs/artist/03ebbce8-b668-4ccb-8d59-67677f05517f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0xe98d3031b3c967e743de7a27b766b1eb1e4fc41ca11b8c85c3074116f8c9fdbe","name":"オバチャーン","registered_at":"2026-06-15T14:57:36Z","symbol":"NIM0743955","token_address":"0x3e1c6c7986bf8a25b9e3c8526c78c40514679106","type":"artist","uuid":"03ebbce8-b668-4ccb-8d59-67677f05517f"}
album: OVERPOWER
  type: MusicAlbum
  date published: 2025-03-19
album: オバザベスト〜そして伝説へ・・・〜
  type: MusicAlbum
  date published: 2025-05-01