Kostas Kampantais
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa69153698197f3c505de06e183c752af0169ed7de0e044c2500cd4fe0097c86d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fedb1dc0-8a3b-4d79-87a6-b9e01d439cca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fedb1dc0-8a3b-4d79-87a6-b9e01d439cca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fedb1dc0-8a3b-4d79-87a6-b9e01d439cca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa69153698197f3c505de06e183c752af0169ed7de0e044c2500cd4fe0097c86d","name":"Kostas Kampantais","registered_at":"2026-06-21T18:08:39Z","symbol":"NIM1996645","token_address":"0x3d175462dee2dc7cd2d0f128021287b31c35a943","type":"artist","uuid":"fedb1dc0-8a3b-4d79-87a6-b9e01d439cca"}
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 0xa69153698197f3c505de06e183c752af0169ed7de0e044c2500cd4fe0097c86d. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fedb1dc0-8a3b-4d79-87a6-b9e01d439cca.json and https://artists.proofprofile.net/proofs/artist/fedb1dc0-8a3b-4d79-87a6-b9e01d439cca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0xa69153698197f3c505de06e183c752af0169ed7de0e044c2500cd4fe0097c86d","name":"Kostas Kampantais","registered_at":"2026-06-21T18:08:39Z","symbol":"NIM1996645","token_address":"0x3d175462dee2dc7cd2d0f128021287b31c35a943","type":"artist","uuid":"fedb1dc0-8a3b-4d79-87a6-b9e01d439cca"}