Karl Terkal
type: MusicGroup
description: Karl Terkal (7 October 1919 - 12 August 1996) was an Austrian operatic tenor, particularly associated with lyric roles of the German repertory, both opera and operetta. Born in Vienna, Terkal was wor
popularity: 3
followers: 1
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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 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
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track: Paganini: Gern hab' ich die Frau'n geküsst
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  by artist: Franz Lehár
  by artist: Vienna State Opera Orchestra
  by artist: Vienna State Opera Chorus
  by artist: Franz Bauer-Theussl
  by artist: Karl Terkal
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    date published: 2010-09-01
  genre: opera
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T12:45:34Z
  audio: Paganini: Gern hab' ich die Frau'n geküsst
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track: Die Czardasfüsrstin, Act I: "Die Mädis vom Chantant"
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  by artist: Vienna State Opera Orchestra
  by artist: Vienna State Opera Chorus
  by artist: Franz Bauer-Theussl
  by artist: Karl Terkal
  in album: Beliebte Operettenmelodien
    type: MusicAlbum
    date published: 2010-09-01
  genre: fado
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T15:42:38Z
  audio: Die Czardasfüsrstin, Act I: "Die Mädis vom Chantant"
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track: Im weissen Rössl, Akt I: "Es muss was Wunderbares sein"
track: Im weissen Rössl, Akt III: "Mein Liebeslied muss ein Walzer sein"
track: Die lustige Witwe: Wie die Blumen im Lenze erblüh'n/Ballsirenenwalzer
track: Gräfin Mariza: Ich warte auf das große Wunder/Machen wir's den Schwalben nach
track: Der Graf von Luxemburg, Act I: "Mein Ahnherr war der Graf von Luxemburg"
track: Der Graf von Luxemburg, Act I: "Bist Du's, lachendes Glück"

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Im weissen Rössl, Akt I: "Es muss was Wunderbares sein"
type: MusicRecording
duration: PT3M9S
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explicit: false
by artist: Ralph Benatzky
by artist: Vienna State Opera Orchestra
by artist: Lotte Rysanek
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
  type: MusicAlbum
  date published: 2010-09-01
isrc code: CAM460870122
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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 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
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  date published: 2026-07-30T08:04:30Z
audio: Im weissen Rössl, Akt I: "Es muss was Wunderbares sein"
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Im weissen Rössl, Akt III: "Mein Liebeslied muss ein Walzer sein"
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duration: PT3M14S
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explicit: false
by artist: Ralph Benatzky
by artist: Vienna State Opera Orchestra
by artist: Lotte Rysanek
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
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  date published: 2010-09-01
isrc code: CAM460870123
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Im weissen Rössl, Akt III: "Mein Liebeslied muss ein Walzer sein"
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Die lustige Witwe: Wie die Blumen im Lenze erblüh'n/Ballsirenenwalzer
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by artist: Franz Lehár
by artist: Vienna State Opera Orchestra
by artist: Lotte Rysanek
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
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genre: opera
isrc code: CAM460870145
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b5410ca55f570f58126e295ccfa73c4ac04413ef725bcdcfa5b192bc8d0ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAM460870145.
  date published: 2026-07-08T03:20:19Z
audio: Die lustige Witwe: Wie die Blumen im Lenze erblüh'n/Ballsirenenwalzer
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Gräfin Mariza: Ich warte auf das große Wunder/Machen wir's den Schwalben nach
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by artist: Vienna State Opera Orchestra
by artist: Lotte Rysanek
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
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  date published: 2010-09-01
genre: fado
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Gräfin Mariza: Ich warte auf das große Wunder/Machen wir's den Schwalben nach
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Der Graf von Luxemburg, Act I: "Mein Ahnherr war der Graf von Luxemburg"
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duration: PT2M49S
duration ms: 169920
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by artist: Vienna State Opera Orchestra
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
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  date published: 2010-09-01
genre: opera
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3446f7e1c1aa26ee500472b728bd6a9906e78279e0a4484843940d34adf2fec. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAM460870150.
  date published: 2026-07-31T12:24:41Z
audio: Der Graf von Luxemburg, Act I: "Mein Ahnherr war der Graf von Luxemburg"
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Der Graf von Luxemburg, Act I: "Bist Du's, lachendes Glück"
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duration: PT2M53S
duration ms: 173146
explicit: false
by artist: Franz Lehár
by artist: Vienna State Opera Orchestra
by artist: Lotte Rysanek
by artist: Vienna State Opera Chorus
by artist: Franz Bauer-Theussl
by artist: Karl Terkal
in album: Beliebte Operettenmelodien
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genre: opera
isrc code: CAM460870151
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64191ae219c53011499899c8ec4e6f818deddebe30c4e83b3b8b04dc48cb741b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CAM460870151.
  date published: 2026-07-30T21:35:24Z
audio: Der Graf von Luxemburg, Act I: "Bist Du's, lachendes Glück"
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