Nikos Kostagios
type: MusicGroup
genre: laïko
popularity: 2
followers: 88
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86e111b5c1db9a78a2a71e7365636e3c502e893e3c41664c760a76549d9f5a18
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cae303a7-45e7-4a34-8c64-df376e673875.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cae303a7-45e7-4a34-8c64-df376e673875.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cae303a7-45e7-4a34-8c64-df376e673875
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86e111b5c1db9a78a2a71e7365636e3c502e893e3c41664c760a76549d9f5a18","name":"Nikos Kostagios","registered_at":"2026-06-20T22:56:28Z","symbol":"NIM1739669","token_address":"0xd0ae6a9c4bc44d76190f92da0699db13d417e402","type":"artist","uuid":"cae303a7-45e7-4a34-8c64-df376e673875"}
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 0x86e111b5c1db9a78a2a71e7365636e3c502e893e3c41664c760a76549d9f5a18. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cae303a7-45e7-4a34-8c64-df376e673875.json and https://artists.proofprofile.net/proofs/artist/cae303a7-45e7-4a34-8c64-df376e673875.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x86e111b5c1db9a78a2a71e7365636e3c502e893e3c41664c760a76549d9f5a18","name":"Nikos Kostagios","registered_at":"2026-06-20T22:56:28Z","symbol":"NIM1739669","token_address":"0xd0ae6a9c4bc44d76190f92da0699db13d417e402","type":"artist","uuid":"cae303a7-45e7-4a34-8c64-df376e673875"}
album: Kalnterimia
  type: MusicAlbum
  date published: 2021-05-26
album: Zilevo
  type: MusicAlbum
  date published: 2022-07-05
album: MARGARITARI
  type: MusicAlbum
  date published: 2024-06-06