Kurt Calleja
type: MusicGroup
description: Kurt Calleja (born 5 May 1989) is a Maltese singer. He represented Malta in the Eurovision Song Contest 2012 in Baku, Azerbaijan with the song "This Is the Night". The song qualified from the second s
popularity: 18
followers: 3392
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-06-15T01:43:13Z
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album: This Is The Night
  type: MusicAlbum
  date published: 2012-05-08
album: Boomerang
  type: MusicAlbum
  date published: 2012-09-24
album: Sweet Chilli
  type: MusicAlbum
  date published: 2019-06-28
album: Bla Tarf
  type: MusicAlbum
  date published: 2022-05-06
album: Bla Tarf
  type: MusicAlbum
  date published: 2022-05-13
album: Bla Tarf (Orchestral Version)
  type: MusicAlbum
  date published: 2022-08-01
  track: Bla Tarf - Orchestral Version
  track: Bla Tarf
album: X'Għamilt B'Idejja
  type: MusicAlbum
  date published: 2023-06-08
album: Għal Kulħadd
  type: MusicAlbum
  date published: 2024-10-24
album: Għal Kulħadd (Dal-Milied)
  type: MusicAlbum
  date published: 2024-12-13
album: AZIZ/A
  type: MusicAlbum
  date published: 2025-01-10
track: Bla Tarf
track: This Is The Night - ESC 2012

Bla Tarf - Orchestral Version
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by artist: Kurt Calleja
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Bla Tarf - Orchestral Version
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Bla Tarf
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by artist: Kurt Calleja
in album: Bla Tarf (Orchestral Version)
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  date published: 2022-08-01
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  date published: 2026-07-31T02:19:15Z
audio: Bla Tarf
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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

Bla Tarf
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duration: PT3M33S
duration ms: 213000
explicit: false
by artist: Kurt Calleja
in album: Maltese Hits (Vol. II)
  type: MusicAlbum
  date published: 2022-07-15
popularity: 1
isrc code: DEZ072200790
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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  date published: 2026-07-08T03:22:41Z
audio: Bla Tarf
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This Is The Night - ESC 2012
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duration: PT3M2S
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explicit: false
by artist: Kurt Calleja
in album: Malta’s Eurovision Hits
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  date published: 2014-03-18
isrc code: DEZ071401094
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  date published: 2026-06-13T17:25:41Z
audio: This Is The Night - ESC 2012
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