Nikos Oikonomidis
type: MusicGroup
genre: laïko
genre: traditional music
popularity: 3
followers: 329
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e1737b0c904ac1a2dd37b8e09b72e8466e3c1a119e05498db383b9637b618b6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/faabb88a-01c5-4fc2-96ed-2eb3275f8eeb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/faabb88a-01c5-4fc2-96ed-2eb3275f8eeb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/faabb88a-01c5-4fc2-96ed-2eb3275f8eeb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1e1737b0c904ac1a2dd37b8e09b72e8466e3c1a119e05498db383b9637b618b6","name":"Nikos Oikonomidis","registered_at":"2026-06-21T16:50:56Z","symbol":"NIM1977844","token_address":"0x43a1b4fb1bf0bf96038f89a1d1ee383f17d7c43a","type":"artist","uuid":"faabb88a-01c5-4fc2-96ed-2eb3275f8eeb"}
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 0x1e1737b0c904ac1a2dd37b8e09b72e8466e3c1a119e05498db383b9637b618b6. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/faabb88a-01c5-4fc2-96ed-2eb3275f8eeb.json and https://artists.proofprofile.net/proofs/artist/faabb88a-01c5-4fc2-96ed-2eb3275f8eeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0x1e1737b0c904ac1a2dd37b8e09b72e8466e3c1a119e05498db383b9637b618b6","name":"Nikos Oikonomidis","registered_at":"2026-06-21T16:50:56Z","symbol":"NIM1977844","token_address":"0x43a1b4fb1bf0bf96038f89a1d1ee383f17d7c43a","type":"artist","uuid":"faabb88a-01c5-4fc2-96ed-2eb3275f8eeb"}
album: Perasma Sta Kythira
  type: MusicAlbum
  date published: 1991-04-01