Calliope Tsoupaki
type: MusicGroup
description: Calliope Tsoupaki (; born 27 May 1963) is a Greek pianist and composer. Biography Calliope Tsoupaki was born in Piraeus, Greece. She studied piano and music theory at the Hellinicon Conservatory in A
popularity: 2
followers: 473
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/60ed6b2b-8b1a-44f0-8f94-da43d179faa7.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/60ed6b2b-8b1a-44f0-8f94-da43d179faa7
additional property: OTSTimestamp
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  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fbc692c5261ddd71fd320bef943636599b87d238a84c3efea349041bce9d3d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60ed6b2b-8b1a-44f0-8f94-da43d179faa7.json and https://artists.proofprofile.net/proofs/artist/60ed6b2b-8b1a-44f0-8f94-da43d179faa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Tsoupaki: St. Luke's Passion
  type: MusicAlbum
  date published: 2010-01-01
album: Calliope Tsoupaki: Triptychon
  type: MusicAlbum
  date published: 2016-01-01
album: Paraklitikon (Live)
  type: MusicAlbum
  date published: 2020-12-01
album: Skia (Live)
  type: MusicAlbum
  date published: 2020-12-01
album: The First Lament of Ekavi (Live)
  type: MusicAlbum
  date published: 2020-12-07
album: Thin Air - Recorder
  type: MusicAlbum
  date published: 2021-06-30
album: Meeting Point
  type: MusicAlbum
  date published: 2022-02-04
album: Fos Anesperon
  type: MusicAlbum
  date published: 2022-04-22
album: Thin Air
  type: MusicAlbum
  date published: 2022-12-26
album: Liknon
  type: MusicAlbum
  date published: 2023-10-09