Ioannis Arvanitis
type: MusicGroup
genre: gregorian chant
genre: medieval
popularity: 13
followers: 176
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc2726e67f584c3245d9c9258b0e03292aefe1798835104f3825589fecfa02a35
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953660
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953660
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52ce2589-6f60-48a4-9815-19f9dd625380.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/52ce2589-6f60-48a4-9815-19f9dd625380.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/52ce2589-6f60-48a4-9815-19f9dd625380
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:20:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc2726e67f584c3245d9c9258b0e03292aefe1798835104f3825589fecfa02a35","name":"Ioannis Arvanitis","registered_at":"2026-06-14T13:07:24Z","symbol":"NIM0462317","token_address":"0x6ceae03e990a05f081a87e922cf99d3e1baf49b5","type":"artist","uuid":"52ce2589-6f60-48a4-9815-19f9dd625380"}
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 0xc2726e67f584c3245d9c9258b0e03292aefe1798835104f3825589fecfa02a35. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52ce2589-6f60-48a4-9815-19f9dd625380.json and https://artists.proofprofile.net/proofs/artist/52ce2589-6f60-48a4-9815-19f9dd625380.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:20:01Z
  text: {"copyright_id":"0xc2726e67f584c3245d9c9258b0e03292aefe1798835104f3825589fecfa02a35","name":"Ioannis Arvanitis","registered_at":"2026-06-14T13:07:24Z","symbol":"NIM0462317","token_address":"0x6ceae03e990a05f081a87e922cf99d3e1baf49b5","type":"artist","uuid":"52ce2589-6f60-48a4-9815-19f9dd625380"}