ツチヤチカら
type: MusicGroup
genre: city pop
popularity: 2
followers: 804
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4a6ff7c0f4b931bbfb3bbfb84ab6dd77c7707d8a9c63f6f088e6fb425bd3add
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e493b864-15f5-47d3-ba93-36889ea95d4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e493b864-15f5-47d3-ba93-36889ea95d4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e493b864-15f5-47d3-ba93-36889ea95d4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe4a6ff7c0f4b931bbfb3bbfb84ab6dd77c7707d8a9c63f6f088e6fb425bd3add","name":"ツチヤチカら","registered_at":"2026-06-21T07:42:33Z","symbol":"NIM1865848","token_address":"0x2d710e859eba108b885b5832e65003efaa639361","type":"artist","uuid":"e493b864-15f5-47d3-ba93-36889ea95d4c"}
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 0xe4a6ff7c0f4b931bbfb3bbfb84ab6dd77c7707d8a9c63f6f088e6fb425bd3add. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e493b864-15f5-47d3-ba93-36889ea95d4c.json and https://artists.proofprofile.net/proofs/artist/e493b864-15f5-47d3-ba93-36889ea95d4c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xe4a6ff7c0f4b931bbfb3bbfb84ab6dd77c7707d8a9c63f6f088e6fb425bd3add","name":"ツチヤチカら","registered_at":"2026-06-21T07:42:33Z","symbol":"NIM1865848","token_address":"0x2d710e859eba108b885b5832e65003efaa639361","type":"artist","uuid":"e493b864-15f5-47d3-ba93-36889ea95d4c"}
album: モナリザ
  type: MusicAlbum
  date published: 2019-07-20
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  type: MusicAlbum
  date published: 2019-10-30
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  type: MusicAlbum
  date published: 2020-06-20
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  type: MusicAlbum
  date published: 2020-12-25
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  type: MusicAlbum
  date published: 2021-08-20
album: ガイダンス
  type: MusicAlbum
  date published: 2022-10-20