Nikos Kalamidas
type: MusicGroup
popularity: 2
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa466a35325ee50e72f88276c3618eca2ad0415cb6cda7daf13940f8d54cb2933
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/789f42f4-068e-43e5-8bcc-9b0c5706cffd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/789f42f4-068e-43e5-8bcc-9b0c5706cffd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/789f42f4-068e-43e5-8bcc-9b0c5706cffd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa466a35325ee50e72f88276c3618eca2ad0415cb6cda7daf13940f8d54cb2933","name":"Nikos Kalamidas","registered_at":"2026-06-17T07:41:44Z","symbol":"NIM1327214","token_address":"0x0ef67dfdcd2ce3fa04d6b88ae19b83c0dd7b548a","type":"artist","uuid":"789f42f4-068e-43e5-8bcc-9b0c5706cffd"}
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 0xa466a35325ee50e72f88276c3618eca2ad0415cb6cda7daf13940f8d54cb2933. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/789f42f4-068e-43e5-8bcc-9b0c5706cffd.json and https://artists.proofprofile.net/proofs/artist/789f42f4-068e-43e5-8bcc-9b0c5706cffd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0xa466a35325ee50e72f88276c3618eca2ad0415cb6cda7daf13940f8d54cb2933","name":"Nikos Kalamidas","registered_at":"2026-06-17T07:41:44Z","symbol":"NIM1327214","token_address":"0x0ef67dfdcd2ce3fa04d6b88ae19b83c0dd7b548a","type":"artist","uuid":"789f42f4-068e-43e5-8bcc-9b0c5706cffd"}
album: Sarakatsanikos Sevntas N 2
  type: MusicAlbum
  date published: 2018-07-09
album: Poias Manas Einai Ta Paidia
  type: MusicAlbum
  date published: 2021-04-26
album: Hrisi Militsa Eihaman
  type: MusicAlbum
  date published: 2021-05-10