Ahilleas Halkias
type: MusicGroup
genre: laïko
popularity: 11
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e77e75db377ad03f804c045254d6cc6384f4b9a6535618f99d17fb2c16061e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953625
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953625
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/274e2e15-5c09-443e-8175-83fbeb33a9ec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/274e2e15-5c09-443e-8175-83fbeb33a9ec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/274e2e15-5c09-443e-8175-83fbeb33a9ec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T11:37:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e77e75db377ad03f804c045254d6cc6384f4b9a6535618f99d17fb2c16061e3","name":"Ahilleas Halkias","registered_at":"2026-06-14T08:30:30Z","symbol":"NIM0396262","token_address":"0x4fc7cc36009f98de7e72fdeb887115288488866f","type":"artist","uuid":"274e2e15-5c09-443e-8175-83fbeb33a9ec"}
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 0x8e77e75db377ad03f804c045254d6cc6384f4b9a6535618f99d17fb2c16061e3. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/274e2e15-5c09-443e-8175-83fbeb33a9ec.json and https://artists.proofprofile.net/proofs/artist/274e2e15-5c09-443e-8175-83fbeb33a9ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
  text: {"copyright_id":"0x8e77e75db377ad03f804c045254d6cc6384f4b9a6535618f99d17fb2c16061e3","name":"Ahilleas Halkias","registered_at":"2026-06-14T08:30:30Z","symbol":"NIM0396262","token_address":"0x4fc7cc36009f98de7e72fdeb887115288488866f","type":"artist","uuid":"274e2e15-5c09-443e-8175-83fbeb33a9ec"}