Zero City
type: MusicGroup
genre: noise rock
popularity: 2
followers: 230
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb76b3b5c7158e38251f935780c1b79a1a236efeab220df8b02bfa5648ea74200
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/e4883455-c562-43da-a9c6-eb1ba190bfde.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e4883455-c562-43da-a9c6-eb1ba190bfde.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e4883455-c562-43da-a9c6-eb1ba190bfde
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb76b3b5c7158e38251f935780c1b79a1a236efeab220df8b02bfa5648ea74200","name":"Zero City","registered_at":"2026-06-21T07:58:31Z","symbol":"NIM1869026","token_address":"0x63bb46f130ebbdf3f2c7ea524bb718e57488a34d","type":"artist","uuid":"e4883455-c562-43da-a9c6-eb1ba190bfde"}
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 0xb76b3b5c7158e38251f935780c1b79a1a236efeab220df8b02bfa5648ea74200. 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/e4883455-c562-43da-a9c6-eb1ba190bfde.json and https://artists.proofprofile.net/proofs/artist/e4883455-c562-43da-a9c6-eb1ba190bfde.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xb76b3b5c7158e38251f935780c1b79a1a236efeab220df8b02bfa5648ea74200","name":"Zero City","registered_at":"2026-06-21T07:58:31Z","symbol":"NIM1869026","token_address":"0x63bb46f130ebbdf3f2c7ea524bb718e57488a34d","type":"artist","uuid":"e4883455-c562-43da-a9c6-eb1ba190bfde"}
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  type: MusicAlbum
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