ちはや(Chihaya)
type: MusicGroup
popularity: 4
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc3426ee30ff5faf015c4674597327a26d530f9bcb9f49b7b13fff44a3627e7e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953922
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953922
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b64ea60-4340-43df-80d5-451e5cd7ecea.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b64ea60-4340-43df-80d5-451e5cd7ecea.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b64ea60-4340-43df-80d5-451e5cd7ecea
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:36:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc3426ee30ff5faf015c4674597327a26d530f9bcb9f49b7b13fff44a3627e7e4","name":"ちはや(Chihaya)","registered_at":"2026-06-15T23:20:54Z","symbol":"NIM0864033","token_address":"0xf94133f64d99b1435adda338504899572399a154","type":"artist","uuid":"1b64ea60-4340-43df-80d5-451e5cd7ecea"}
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 0xc3426ee30ff5faf015c4674597327a26d530f9bcb9f49b7b13fff44a3627e7e4. Chain 2 (Bitcoin): anchored in block 953922 (2026-06-16T09:36:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b64ea60-4340-43df-80d5-451e5cd7ecea.json and https://artists.proofprofile.net/proofs/artist/1b64ea60-4340-43df-80d5-451e5cd7ecea.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T09:36:34Z
  text: {"copyright_id":"0xc3426ee30ff5faf015c4674597327a26d530f9bcb9f49b7b13fff44a3627e7e4","name":"ちはや(Chihaya)","registered_at":"2026-06-15T23:20:54Z","symbol":"NIM0864033","token_address":"0xf94133f64d99b1435adda338504899572399a154","type":"artist","uuid":"1b64ea60-4340-43df-80d5-451e5cd7ecea"}
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