Maria Papadopoulou
type: MusicGroup
genre: laïko
genre: traditional music
description: Maria Papadopoulou (; born September 8, 1980) is a Cypriot former swimmer who specialized in butterfly events. She set a Cypriot record of 1:01.67 to earn a bronze medal in the 100 m butterfly at the
popularity: 3
followers: 246
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfd43600885778342ba2a63d1dfd9f1ed299b7a0be09cb7c4d29064954982b395
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b684779-77f8-4363-808b-2104b8b35221.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b684779-77f8-4363-808b-2104b8b35221.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b684779-77f8-4363-808b-2104b8b35221
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfd43600885778342ba2a63d1dfd9f1ed299b7a0be09cb7c4d29064954982b395","name":"Maria Papadopoulou","registered_at":"2026-06-20T03:25:45Z","symbol":"NIM1500847","token_address":"0x99a06a79a991b640b0364482b48e80e3449c74d4","type":"artist","uuid":"9b684779-77f8-4363-808b-2104b8b35221"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd43600885778342ba2a63d1dfd9f1ed299b7a0be09cb7c4d29064954982b395. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b684779-77f8-4363-808b-2104b8b35221.json and https://artists.proofprofile.net/proofs/artist/9b684779-77f8-4363-808b-2104b8b35221.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0xfd43600885778342ba2a63d1dfd9f1ed299b7a0be09cb7c4d29064954982b395","name":"Maria Papadopoulou","registered_at":"2026-06-20T03:25:45Z","symbol":"NIM1500847","token_address":"0x99a06a79a991b640b0364482b48e80e3449c74d4","type":"artist","uuid":"9b684779-77f8-4363-808b-2104b8b35221"}
album: Maria Papadopoulou, Ta Moraitika
  type: MusicAlbum
  date published: 1960-01-01
album: Maria Papadopoulou, No. 2 Gkalmani
  type: MusicAlbum
  date published: 1960-01-01