四つ墓
type: MusicGroup
genre: math rock
genre: shoegaze
popularity: 3
followers: 170
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaaa8dbec0763e29052d4718667b53264b012008246df2ce34ff2e3ec5a5b79a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc78a61c-7d47-4d20-994c-1bd8c0e5e042.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc78a61c-7d47-4d20-994c-1bd8c0e5e042.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc78a61c-7d47-4d20-994c-1bd8c0e5e042
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaaa8dbec0763e29052d4718667b53264b012008246df2ce34ff2e3ec5a5b79a9","name":"四つ墓","registered_at":"2026-06-21T17:47:37Z","symbol":"NIM1990298","token_address":"0x7331f73ad27a90aecb86345e2a0662902c8a0764","type":"artist","uuid":"fc78a61c-7d47-4d20-994c-1bd8c0e5e042"}
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 0xaaa8dbec0763e29052d4718667b53264b012008246df2ce34ff2e3ec5a5b79a9. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc78a61c-7d47-4d20-994c-1bd8c0e5e042.json and https://artists.proofprofile.net/proofs/artist/fc78a61c-7d47-4d20-994c-1bd8c0e5e042.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xaaa8dbec0763e29052d4718667b53264b012008246df2ce34ff2e3ec5a5b79a9","name":"四つ墓","registered_at":"2026-06-21T17:47:37Z","symbol":"NIM1990298","token_address":"0x7331f73ad27a90aecb86345e2a0662902c8a0764","type":"artist","uuid":"fc78a61c-7d47-4d20-994c-1bd8c0e5e042"}
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