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type: MusicGroup
genre: opera
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followers: 4
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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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  date published: 2026-06-17T00:32:47Z
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track: Die Zauberflöte, K. 620: Act I: Arie: Der Vogelfanger bin ich ja (Papageno)
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  by artist: Wolfgang Amadeus Mozart
  by artist: Hermann Thimig
  by artist: Kurt Lieck
  by artist: Josef Greindl
  by artist: Rudolf Schock
  by artist: Hans Hotter
  by artist: Peter Esser
  by artist: Horst Otto Rainer
  by artist: Kathe Moller-Siepermann
  by artist: Wilma Lipp
  by artist: Teresa Stich-Randall
  by artist: Annelies Kupper
  by artist: Elisabeth Lindermeier
  by artist: Hanna Ludwig
  by artist: Hilla Oppel
  by artist: Gisela Litz
  by artist: Kristina Sert
  by artist: Erich Kunz
  by artist: Kurt Marschner
  by artist: Wilhelm Lückert
  by artist: Walter Kreppel
  by artist: Cologne Radio Chorus
  by artist: Cologne Radio Symphony Orchestra
  by artist: Joseph Keilberth
  in album: Mozart, W.A.: Magic Flute (The) [Opera]
    type: MusicAlbum
    date published: 2005-01-01
  popularity: 4
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T09:37:10Z
  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
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    date published: 2026-07-30T09:37:10Z
  audio: Die Zauberflöte, K. 620: Act I: Arie: Der Vogelfanger bin ich ja (Papageno)
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track: Die Zauberflöte, K. 620: Ouverture
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  by artist: Wolfgang Amadeus Mozart
  by artist: Hermann Thimig
  by artist: Kurt Lieck
  by artist: Josef Greindl
  by artist: Rudolf Schock
  by artist: Hans Hotter
  by artist: Peter Esser
  by artist: Horst Otto Rainer
  by artist: Kathe Moller-Siepermann
  by artist: Wilma Lipp
  by artist: Teresa Stich-Randall
  by artist: Annelies Kupper
  by artist: Elisabeth Lindermeier
  by artist: Hanna Ludwig
  by artist: Hilla Oppel
  by artist: Gisela Litz
  by artist: Kristina Sert
  by artist: Erich Kunz
  by artist: Kurt Marschner
  by artist: Wilhelm Lückert
  by artist: Walter Kreppel
  by artist: Cologne Radio Chorus
  by artist: Cologne Radio Symphony Orchestra
  by artist: Joseph Keilberth
  in album: Mozart, W.A.: Magic Flute (The) [Opera]
    type: MusicAlbum
    date published: 2005-01-01
  popularity: 3
  genre: classical
  genre: classical-era
  genre: classical-piano
  genre: opera
  genre: chamber-music
  genre: concerto
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Die Zauberflöte, K. 620: Ouverture
track: Die Zauberflöte, K. 620: Act II: Terzett: Seid uns zum zweiten Mal willkommen (Drei Knaben)
track: Die Zauberflöte, K. 620: Act II: Finale: Bald prangt, den Morgen zu verkunden - Der, welcher wandert - Papagena! Papagena! Papagena! - Nur stille! Stille! Stille Stille!

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79dd0d3a21ef6c892451608f9ba14cb5a88cf3df73c4c90b5f0b4c9de7effd3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2TL0945001.
date published: 2026-07-08T03:53:27Z

Die Zauberflöte, K. 620: Ouverture
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additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Danceability
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Die Zauberflöte, K. 620: Act II: Terzett: Seid uns zum zweiten Mal willkommen (Drei Knaben)
type: MusicRecording
duration: PT1M34S
duration ms: 94733
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hermann Thimig
by artist: Kurt Lieck
by artist: Josef Greindl
by artist: Rudolf Schock
by artist: Hans Hotter
by artist: Peter Esser
by artist: Horst Otto Rainer
by artist: Kathe Moller-Siepermann
by artist: Wilma Lipp
by artist: Teresa Stich-Randall
by artist: Annelies Kupper
by artist: Elisabeth Lindermeier
by artist: Hanna Ludwig
by artist: Hilla Oppel
by artist: Gisela Litz
by artist: Kristina Sert
by artist: Erich Kunz
by artist: Kurt Marschner
by artist: Wilhelm Lückert
by artist: Walter Kreppel
by artist: Cologne Radio Chorus
by artist: Cologne Radio Symphony Orchestra
by artist: Joseph Keilberth
in album: Mozart, W.A.: Magic Flute (The) [Opera]
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
isrc code: US2TL0945033
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-31T16:33:26Z
audio: Die Zauberflöte, K. 620: Act II: Terzett: Seid uns zum zweiten Mal willkommen (Drei Knaben)
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Die Zauberflöte, K. 620: Act II: Finale: Bald prangt, den Morgen zu verkunden - Der, welcher wandert - Papagena! Papagena! Papagena! - Nur stille! Stille! Stille Stille!
type: MusicRecording
duration: PT31M22S
duration ms: 1882106
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Hermann Thimig
by artist: Kurt Lieck
by artist: Josef Greindl
by artist: Rudolf Schock
by artist: Hans Hotter
by artist: Peter Esser
by artist: Horst Otto Rainer
by artist: Kathe Moller-Siepermann
by artist: Wilma Lipp
by artist: Teresa Stich-Randall
by artist: Annelies Kupper
by artist: Elisabeth Lindermeier
by artist: Hanna Ludwig
by artist: Hilla Oppel
by artist: Gisela Litz
by artist: Kristina Sert
by artist: Erich Kunz
by artist: Kurt Marschner
by artist: Wilhelm Lückert
by artist: Walter Kreppel
by artist: Cologne Radio Chorus
by artist: Cologne Radio Symphony Orchestra
by artist: Joseph Keilberth
in album: Mozart, W.A.: Magic Flute (The) [Opera]
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: classical-era
genre: classical-piano
genre: opera
genre: chamber-music
genre: concerto
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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
  type: DigitalDocument
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  date published: 2026-07-31T13:04:34Z
audio: Die Zauberflöte, K. 620: Act II: Finale: Bald prangt, den Morgen zu verkunden - Der, welcher wandert - Papagena! Papagena! Papagena! - Nur stille! Stille! Stille Stille!
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