Greek Popular Music Ensemble "Plaka"
type: MusicGroup
popularity: 9
followers: 1968
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7abf8819f17dd227f115f505899bcd91afc89599e186c343ff5aab85aad7839
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6f92b7e-e7b8-4c24-b31b-421fcfbaa275.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c6f92b7e-e7b8-4c24-b31b-421fcfbaa275.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c6f92b7e-e7b8-4c24-b31b-421fcfbaa275
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa7abf8819f17dd227f115f505899bcd91afc89599e186c343ff5aab85aad7839","name":"Greek Popular Music Ensemble \"Plaka\"","registered_at":"2026-06-20T21:31:50Z","symbol":"NIM1721504","token_address":"0x69cc964e7d7ab422c9f7012a410394ee60ab6e11","type":"artist","uuid":"c6f92b7e-e7b8-4c24-b31b-421fcfbaa275"}
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 0xa7abf8819f17dd227f115f505899bcd91afc89599e186c343ff5aab85aad7839. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6f92b7e-e7b8-4c24-b31b-421fcfbaa275.json and https://artists.proofprofile.net/proofs/artist/c6f92b7e-e7b8-4c24-b31b-421fcfbaa275.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xa7abf8819f17dd227f115f505899bcd91afc89599e186c343ff5aab85aad7839","name":"Greek Popular Music Ensemble \"Plaka\"","registered_at":"2026-06-20T21:31:50Z","symbol":"NIM1721504","token_address":"0x69cc964e7d7ab422c9f7012a410394ee60ab6e11","type":"artist","uuid":"c6f92b7e-e7b8-4c24-b31b-421fcfbaa275"}