Νίκος Τζούμας
type: MusicGroup
genre: laïko
popularity: 3
followers: 455
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4432568c29d56ccd02d2bb0e585442056954751fc3e64e2305076467aa1ea6d0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa6e47f7-3e86-47c1-8b72-4f82aae82b75.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa6e47f7-3e86-47c1-8b72-4f82aae82b75.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aa6e47f7-3e86-47c1-8b72-4f82aae82b75
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4432568c29d56ccd02d2bb0e585442056954751fc3e64e2305076467aa1ea6d0","name":"Νίκος Τζούμας","registered_at":"2026-06-20T09:23:21Z","symbol":"NIM1577627","token_address":"0xdc4cd2a9c58b2d1d9cc2633ad4967c4785392e28","type":"artist","uuid":"aa6e47f7-3e86-47c1-8b72-4f82aae82b75"}
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 0x4432568c29d56ccd02d2bb0e585442056954751fc3e64e2305076467aa1ea6d0. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa6e47f7-3e86-47c1-8b72-4f82aae82b75.json and https://artists.proofprofile.net/proofs/artist/aa6e47f7-3e86-47c1-8b72-4f82aae82b75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x4432568c29d56ccd02d2bb0e585442056954751fc3e64e2305076467aa1ea6d0","name":"Νίκος Τζούμας","registered_at":"2026-06-20T09:23:21Z","symbol":"NIM1577627","token_address":"0xdc4cd2a9c58b2d1d9cc2633ad4967c4785392e28","type":"artist","uuid":"aa6e47f7-3e86-47c1-8b72-4f82aae82b75"}
album: Είσαι ένας κύκλος (Live)
  type: MusicAlbum
  date published: 2015-09-25