Sebastian Holecek
type: MusicGroup
genre: opera
description: Sebastian Holecek (born 27 March 1964) is an Austrian operatic baritone. He has been part of the ensemble of the Vienna Volksoper since 2006. Leben und Werk Born in Vienna, Holecek is the son of th
popularity: 9
followers: 11
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subject of: OpenTimestamps Proof of Existence
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track: Die Fledermaus: Act III: Hi, hi … da bin ich ja eh richtig … Mein Kopf! (Frank)
track: Die Fledermaus: Act III: Spiel' ich die Unschuld vom Lande (Adele, Ida, Frank)
track: Die Fledermaus: Act II: Finale: Herr Chevalier, ich grusse Sie (Eisenstein, Frank)
track: Die Fledermaus: Act I: Finale: Trinke, Liebchen, trinke schnell (Rosalinde, Alfred, Frank)
track: Die Fledermaus: Act II: Finale: Genug damit, genug! (Orlofsky, Eisenstein, Adele, Rosalinde, Frank, Falke, Chorus)

Die Fledermaus: Act III: Hi, hi … da bin ich ja eh richtig … Mein Kopf! (Frank)
type: MusicRecording
duration: PT4M23S
duration ms: 263653
explicit: false
by artist: Johann Strauss II
by artist: Sebastian Holecek
by artist: Cologne West German Radio Orchestra
by artist: Friedrich Haider
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 2014-02-04
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additional property: OTSTimestamp
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Die Fledermaus: Act III: Hi, hi … da bin ich ja eh richtig … Mein Kopf! (Frank)
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Die Fledermaus: Act III: Spiel' ich die Unschuld vom Lande (Adele, Ida, Frank)
type: MusicRecording
duration: PT4M29S
duration ms: 269066
explicit: false
by artist: Johann Strauss II
by artist: Chen Reiss
by artist: Sabine Kallhammer
by artist: Sebastian Holecek
by artist: Cologne West German Radio Orchestra
by artist: Friedrich Haider
in album: Strauss: Die Fledermaus
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  date published: 2014-02-04
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Die Fledermaus: Act III: Spiel' ich die Unschuld vom Lande (Adele, Ida, Frank)
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Die Fledermaus: Act II: Finale: Herr Chevalier, ich grusse Sie (Eisenstein, Frank)
type: MusicRecording
duration: PT1M36S
duration ms: 96293
explicit: false
by artist: Johann Strauss II
by artist: Paul Armin Edelmann
by artist: Sebastian Holecek
by artist: Cologne West German Radio Orchestra
by artist: Friedrich Haider
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 2014-02-04
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5654ad78ab6c174601fb61da71c6076b2dbacb735ca0c5745faa2505e003e68. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:43:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB261300084.
  date published: 2026-07-22T16:43:06Z
audio: Die Fledermaus: Act II: Finale: Herr Chevalier, ich grusse Sie (Eisenstein, Frank)
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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

Die Fledermaus: Act I: Finale: Trinke, Liebchen, trinke schnell (Rosalinde, Alfred, Frank)
type: MusicRecording
duration: PT11M8S
duration ms: 668226
explicit: false
by artist: Johann Strauss II
by artist: Paul Armin Edelmann
by artist: Rainer Trost
by artist: Sebastian Holecek
by artist: Cologne West German Radio Orchestra
by artist: Friedrich Haider
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 2014-02-04
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee3695f74cecb69f9908047e9e14572ddf1c2ec8d8a8740851a21424ddfa5db. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB261300077.
  date published: 2026-07-29T19:35:34Z
audio: Die Fledermaus: Act I: Finale: Trinke, Liebchen, trinke schnell (Rosalinde, Alfred, Frank)
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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

Die Fledermaus: Act II: Finale: Genug damit, genug! (Orlofsky, Eisenstein, Adele, Rosalinde, Frank, Falke, Chorus)
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duration: PT4M27S
duration ms: 267120
explicit: false
by artist: Johann Strauss II
by artist: Natascha Petrinsky
by artist: Paul Armin Edelmann
by artist: Chen Reiss
by artist: Aga Mikolaj
by artist: Sebastian Holecek
by artist: Miljenko Turk
by artist: Cologne West German Radio Chorus
by artist: Cologne West German Radio Orchestra
by artist: Friedrich Haider
in album: Strauss: Die Fledermaus
  type: MusicAlbum
  date published: 2014-02-04
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T01:34:28Z
audio: Die Fledermaus: Act II: Finale: Genug damit, genug! (Orlofsky, Eisenstein, Adele, Rosalinde, Frank, Falke, Chorus)
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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