Kostas Kallergis
type: MusicGroup
popularity: 21
followers: 996
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbcc50f304f36ecab2d1514c3cbee825175192c12319ae1b308440686b60d660a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd3c1de8-6727-4d3b-a073-13dfabb3a85a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fd3c1de8-6727-4d3b-a073-13dfabb3a85a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fd3c1de8-6727-4d3b-a073-13dfabb3a85a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbcc50f304f36ecab2d1514c3cbee825175192c12319ae1b308440686b60d660a","name":"Kostas Kallergis","registered_at":"2026-06-12T14:31:46Z","symbol":"NIM0326317","token_address":"0x01efb05110ab98d6a6a69738ab7af7a9919beffb","type":"artist","uuid":"fd3c1de8-6727-4d3b-a073-13dfabb3a85a"}
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 0xbcc50f304f36ecab2d1514c3cbee825175192c12319ae1b308440686b60d660a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd3c1de8-6727-4d3b-a073-13dfabb3a85a.json and https://artists.proofprofile.net/proofs/artist/fd3c1de8-6727-4d3b-a073-13dfabb3a85a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbcc50f304f36ecab2d1514c3cbee825175192c12319ae1b308440686b60d660a","name":"Kostas Kallergis","registered_at":"2026-06-12T14:31:46Z","symbol":"NIM0326317","token_address":"0x01efb05110ab98d6a6a69738ab7af7a9919beffb","type":"artist","uuid":"fd3c1de8-6727-4d3b-a073-13dfabb3a85a"}