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genre: opera
genre: schlager
description: thumb|300px|Stamp commemorating the birth of Joseph Schmidt (Deutsche Post 2004). The musical score shows the title of his 1933 film Ein Lied geht um die Welt (A song goes round the world) right|thumb
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subject of: OpenTimestamps Proof of Existence
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album: Le postillon de Lonjumeau: Freunde, vernehmet die Geschichte (Live)
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album: The Art Of Joseph Schmidt
  type: MusicAlbum
  date published: 2000-01-01
album: Schmidt - A Song Goes Round The World
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  date published: 2004-01-01
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    subject of: OpenTimestamps Proof of Existence
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  track: L'elisir d'amore: Act II: Una furtiva lagrima
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    subject of: OpenTimestamps Proof of Existence
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  track: Der Favorit, Op. 122: Du sollst der Kaiser meiner Seele sein
album: Joseph Schmidt: Complete Studio Recordings (Remastered 2022)
album: Five Tenors
album: The Unforgettable Joseph Schmidt
album: Joseph Schmidt: The Complete Recordings, Vol. 2 (Recorded 1930-1932) [Remastered 2014]
album: Joseph Schmidt: Ein Lied geht um die Welt (Inspiration)
album: Wenn nicht die Hoffnung war (Remastered 2022)
album: Tenor Greats
album: Songs and Arias from Smetana, Mascagni, Niederberger, Lehar, and others
album: In America
album: Funiculi, Funicula : Joseph Schmidt, The German Caruso
album: Dein Ist Mein Ganzes Herz
album: Joseph Schmidt: The Complete Recordings, Vol. 4 (Recorded 1933-1934) [Remastered 2014]
album: Joseph Schmidt: The Complete Recordings, Vol. 3 (Recorded 1932-1933) [Remastered 2014]
album: Joseph Schmidt: The Complete Recordings, Vol. 1 (Recorded 1929-1930) [Remastered 2014]
album: Joseph Schmidt : The Complete Recordings, Vol. 5 (Recorded 1934-1937) [Remastered 2014]
album: The Original Recordings 1930-1932
album: Das waren Zeiten: Joseph Schmidt
album: Joseph Schmidt Vol. I
album: History Records - Classical Edition 97 - Joseph Schmidt II (Original Recordings - Remastered)
album: History Records - Classical Edition 96 - Joseph Schmidt I (Original Recordings - Remastered)
album: Great Recordings
album: Seine gröĂźten Erfolge
album: The German Song: The Voice of Joseph Schmidt
album: Timeless Voices: Joseph Schmidt Vol 3
album: Timeless Voices: Joseph Schmidt Vol 2
album: Timeless Voices: Joseph Schmidt Vol 1
album: Schmidt, Joseph: Arias and Songs (1929-36)
album: Joseph Schmidt singt Canzonen und Unterhaltungslieder
album: Joseph Schmidt singt Arien
album: The Great Joseph Schmidt
album: Joseph Schmidt - The Complete EMI Recordings Vol. 2
album: Joseph Schmidt - Complete EMI Recordings Vol. 1 (1929-1937)
album: The Unforgettable Voice Of Joseph Schmidt
album: Récital de chant (Mono Version)
album: A Star Falls from Heaven
album: Meister Tenöre
album: Jahrhundertstimmen - Unvergessen Vol. 1
album: The Original Recordings 1929-1930

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Der Favorit, Op. 122: Du sollst der Kaiser meiner Seele sein
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  date published: 2004-01-01
genre: polka
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:45:34Z
audio: Der Favorit, Op. 122: Du sollst der Kaiser meiner Seele sein
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Joseph Schmidt: Complete Studio Recordings (Remastered 2022)
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Five Tenors
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The Unforgettable Joseph Schmidt
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track: Heut' ist der schönste Tag in meinem Leben
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T15:20:15Z
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Joseph Schmidt: The Complete Recordings, Vol. 2 (Recorded 1930-1932) [Remastered 2014]
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track: Schön sind die sterne (From "Der Liebesexpress")
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    date published: 2026-07-08T03:20:19Z
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.515
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.111
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major

Joseph Schmidt: Ein Lied geht um die Welt (Inspiration)
type: MusicAlbum
date published: 1992
track: May: "Heut' ist der schönste Tag in meinem Leben" (Lied aus dem Film "Heut' ist der schönste Tag in meinem Leben")
  type: MusicRecording
  duration: PT3M16S
  duration ms: 196933
  explicit: false
  by artist: Hans May
  by artist: Joseph Schmidt
  by artist: Felix Gunther
  by artist: Parlophon Orchester
  in album: Joseph Schmidt: Ein Lied geht um die Welt (Inspiration)
    type: MusicAlbum
    date published: 1992
  isrc code: DEA340702953
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T12:23:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6769e8b786128015aef820b4b58c3d5dbf8e9c6a1dee8a8503d887a4e3fc7202
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960258
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960258
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340702953
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T12:45:34Z
  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 0x6769e8b786128015aef820b4b58c3d5dbf8e9c6a1dee8a8503d887a4e3fc7202. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEA340702953.
    date published: 2026-07-30T12:45:34Z
  audio: May: "Heut' ist der schönste Tag in meinem Leben" (Lied aus dem Film "Heut' ist der schönste Tag in meinem Leben")
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 190.972
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.586
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.632
    additional property: Key Name
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      value: Bb
    additional property: Mode Name
      type: PropertyValue
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Wenn nicht die Hoffnung war (Remastered 2022)
type: MusicAlbum
date published: 2022-11-11
track: Der Favorit: Du sollst der Kaiser meiner Seele sein - Remastered 2022
  type: MusicRecording
  duration: PT2M48S
  duration ms: 168548
  explicit: false
  by artist: Joseph Schmidt
  by artist: Selmar Meyrowitz
  by artist: Staatskapelle Berlin
  in album: Wenn nicht die Hoffnung war (Remastered 2022)
    type: MusicAlbum
    date published: 2022-11-11
  genre: opera
  genre: schlager
  isrc code: DEL112201394
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T22:19:59+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2a00354b201c61130df9a65e56ab3b4d2d61ea9498919d1124e58ccf53a93567
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960327
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEL112201394
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:26:26Z
  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 0x2a00354b201c61130df9a65e56ab3b4d2d61ea9498919d1124e58ccf53a93567. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEL112201394.
    date published: 2026-07-31T00:26:26Z
  audio: Der Favorit: Du sollst der Kaiser meiner Seele sein - Remastered 2022
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 166.097
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.228
    additional property: Energy
      type: PropertyValue
      value: 0.258
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.988
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.1
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.254
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.654
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Tenor Greats
type: MusicAlbum
date published: 2019-07-16
track: Santa Lucia
  type: MusicRecording
  duration: PT3M29S
  duration ms: 209146
  explicit: false
  by artist: Joseph Schmidt
  in album: Tenor Greats
    type: MusicAlbum
    date published: 2019-07-16
  genre: opera
  genre: schlager
  isrc code: GB8XC1910688
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T09:54:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa8c1b192c112a4f6946b2682b045e4fecbe16db4e9eb40aba137ebb782eb2e06
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960387
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960387
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1910688
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T10:06:30Z
  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 0xa8c1b192c112a4f6946b2682b045e4fecbe16db4e9eb40aba137ebb782eb2e06. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GB8XC1910688.
    date published: 2026-07-31T10:06:30Z
  audio: Santa Lucia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 103.126
    additional property: Musical Key
      type: PropertyValue
      value: 3
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.287
    additional property: Energy
      type: PropertyValue
      value: 0.248
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.974
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.019
    additional property: Liveness
      type: PropertyValue
      value: 0.234
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.384
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.703
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: La Paloma
  type: MusicRecording
  duration: PT3M3S
  duration ms: 183106
  explicit: false
  by artist: Joseph Schmidt
  in album: Tenor Greats
    type: MusicAlbum
    date published: 2019-07-16
  genre: opera
  genre: schlager
  isrc code: GB8XC1910701
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T18:25:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x22610d07eb72cac5e4e7288ed8617877bbbb0b7aa75b3b5ffe76e8b5c885dab8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1910701
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x22610d07eb72cac5e4e7288ed8617877bbbb0b7aa75b3b5ffe76e8b5c885dab8. 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/GB8XC1910701.
    date published: 2026-07-08T03:20:19Z
  audio: La Paloma
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.073
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.384
    additional property: Energy
      type: PropertyValue
      value: 0.142
    additional property: Speechiness
      type: PropertyValue
      value: 0.051
    additional property: Acousticness
      type: PropertyValue
      value: 0.985
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.136
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.352
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.891
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Ein Stern Fallt Vom Himmel
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185080
  explicit: false
  by artist: Joseph Schmidt
  in album: Tenor Greats
    type: MusicAlbum
    date published: 2019-07-16
  genre: opera
  genre: schlager
  isrc code: GB8XC1910702
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x144a5eeb0fbee84ea0fe0bc4ed5764605b4326af46833493edfe48eb677bcca4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960209
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Ein Stern Fallt Vom Himmel
track: Heutist Der SchonstemTag in Meinem Leben
track: Ik Hou Van Holland
track: Tiritomba

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960209

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1910702

OTSTimestamp
type: PropertyValue
value: 2026-07-30T05:15:54Z

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 0x144a5eeb0fbee84ea0fe0bc4ed5764605b4326af46833493edfe48eb677bcca4. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GB8XC1910702.
date published: 2026-07-30T05:15:54Z

Ein Stern Fallt Vom Himmel
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 110.568
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.345
additional property: Energy
  type: PropertyValue
  value: 0.199
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.989
additional property: Instrumentalness
  type: PropertyValue
  value: 0.002
additional property: Liveness
  type: PropertyValue
  value: 0.146
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.413
additional property: Loudness (dB)
  type: PropertyValue
  value: -19.304
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Heutist Der SchonstemTag in Meinem Leben
type: MusicRecording
duration: PT3M19S
duration ms: 199040
explicit: false
by artist: Joseph Schmidt
in album: Tenor Greats
  type: MusicAlbum
  date published: 2019-07-16
genre: opera
genre: schlager
isrc code: GB8XC1910703
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T00:49:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x47d1484e447bfb09a9f141e00d28d98929832f5c93dc42429d279324bc380c17
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960183
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1910703
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T01:10:20Z
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 0x47d1484e447bfb09a9f141e00d28d98929832f5c93dc42429d279324bc380c17. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GB8XC1910703.
  date published: 2026-07-30T01:10:20Z
audio: Heutist Der SchonstemTag in Meinem Leben
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.514
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.579
  additional property: Energy
    type: PropertyValue
    value: 0.31
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.388
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.615
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.433
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ik Hou Van Holland
type: MusicRecording
duration: PT3M31S
duration ms: 211413
explicit: false
by artist: Joseph Schmidt
in album: Tenor Greats
  type: MusicAlbum
  date published: 2019-07-16
genre: opera
genre: schlager
isrc code: GB8XC1910706
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T07:04:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1315d937eaa6946e159ac0c9c5e801d61b8a21d65719ba1c59244d0c96c58e58
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960220
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960220
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB8XC1910706
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T07:28:30Z
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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audio: Ik Hou Van Holland
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Tiritomba
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subject of: OpenTimestamps Proof of Existence
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Songs and Arias from Smetana, Mascagni, Niederberger, Lehar, and others
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In America
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date published: 2016-10-11

Funiculi, Funicula : Joseph Schmidt, The German Caruso
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Dein Ist Mein Ganzes Herz
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Joseph Schmidt: The Complete Recordings, Vol. 4 (Recorded 1933-1934) [Remastered 2014]
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Joseph Schmidt: The Complete Recordings, Vol. 3 (Recorded 1932-1933) [Remastered 2014]
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Joseph Schmidt: The Complete Recordings, Vol. 1 (Recorded 1929-1930) [Remastered 2014]
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date published: 2014-05-06

Joseph Schmidt : The Complete Recordings, Vol. 5 (Recorded 1934-1937) [Remastered 2014]
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date published: 2014-05-06

The Original Recordings 1930-1932
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Das waren Zeiten: Joseph Schmidt
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Joseph Schmidt Vol. I
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date published: 2013-07-19

History Records - Classical Edition 97 - Joseph Schmidt II (Original Recordings - Remastered)
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date published: 2012

History Records - Classical Edition 96 - Joseph Schmidt I (Original Recordings - Remastered)
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date published: 2012

Great Recordings
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track: Land so wunderbar (Arie des Vasco aus "Die Afrikanerin")
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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  audio: Heut' ist der schönste Tag in meinem Leben
track: Wenn du jung bist, gehört dir die Welt (aus dem gleichnamigen Film)
track: Ja, das alles auf Ehr'

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OpenTimestamps Proof of Existence
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Heut' ist der schönste Tag in meinem Leben
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Wenn du jung bist, gehört dir die Welt (aus dem gleichnamigen Film)
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Ja, das alles auf Ehr'
type: MusicRecording
duration: PT2M39S
duration ms: 159858
explicit: false
by artist: Joseph Schmidt
in album: Great Recordings
  type: MusicAlbum
  date published: 2011-11-18
genre: opera
genre: schlager
isrc code: DEHB51105894
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHB51105894
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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 0x049fef0e6d585f30cad523335bf3d7c8a2f5447c0ff8f6f3690152eb6b8f19be. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEHB51105894.
  date published: 2026-07-08T03:22:41Z
audio: Ja, das alles auf Ehr'
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Seine gröĂźten Erfolge
type: MusicAlbum
date published: 2011-04-22

The German Song: The Voice of Joseph Schmidt
type: MusicAlbum
date published: 2011-02-14
track: Ja du Allein
  type: MusicRecording
  duration: PT3M19S
  duration ms: 199973
  explicit: false
  by artist: Joseph Schmidt
  in album: The German Song: The Voice of Joseph Schmidt
    type: MusicAlbum
    date published: 2011-02-14
  genre: opera
  genre: schlager
  isrc code: GRHR11140102
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11140102
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T18:48:12Z
  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 0xf6dbcd336eff2897aa0342d406da49ee868637c94d82bd7d609123db8fd40c98. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GRHR11140102.
    date published: 2026-07-31T18:48:12Z
  audio: Ja du Allein
    type: AudioObject
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    additional property: Danceability
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track: Ein Lied Geht Um die Welt
  type: MusicRecording
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  explicit: false
  by artist: Joseph Schmidt
  in album: The German Song: The Voice of Joseph Schmidt
    type: MusicAlbum
    date published: 2011-02-14
  genre: opera
  genre: schlager
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  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRHR11140106
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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: 2026-07-02T03:30:09Z
  audio: Ein Lied Geht Um die Welt
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Mode Name
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Timeless Voices: Joseph Schmidt Vol 3
type: MusicAlbum
date published: 2010-03-02

Timeless Voices: Joseph Schmidt Vol 2
type: MusicAlbum
date published: 2010-03-02

Timeless Voices: Joseph Schmidt Vol 1
type: MusicAlbum
date published: 2010-03-02

Schmidt, Joseph: Arias and Songs (1929-36)
type: MusicAlbum
date published: 2007-12-11
track: La bohème, Act III: Kokett ist dieses Madchen (Mimi e una civetta)
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  duration: PT3M44S
  duration ms: 224493
  explicit: false
  by artist: Giacomo Puccini
  by artist: Joseph Schmidt
  by artist: Deutsches Symphonie-Orchester Berlin
  by artist: Frieder Weissmann
  in album: Schmidt, Joseph: Arias and Songs (1929-36)
    type: MusicAlbum
    date published: 2007-12-11
  isrc code: HKI190758813
  additional property: CopyrightID
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    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190758813
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T13:04:34Z
  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 0xc1031583a7bb7f6d8abe04fbf433ec6e0fc639bf917197bd539c3412e7d0fce5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/HKI190758813.
    date published: 2026-07-31T13:04:34Z
  audio: La bohème, Act III: Kokett ist dieses Madchen (Mimi e una civetta)
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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Joseph Schmidt singt Canzonen und Unterhaltungslieder
type: MusicAlbum
date published: 2006-08-16
track: O sole mio
  type: MusicRecording
  duration: PT3M3S
  duration ms: 183106
  explicit: false
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    type: MusicAlbum
    date published: 2006-08-16
  genre: opera
  genre: schlager
  isrc code: ATP130252721
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T00:26:26Z
  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 0x59d8e6e40183558845d5e818cce4b907bede1b96f7f7cc38058ad8be6c70397e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ATP130252721.
    date published: 2026-07-31T00:26:26Z
  audio: O sole mio
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.987
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: La Paloma
  type: MusicRecording
  duration: PT3M1S
  duration ms: 181333
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  by artist: Joseph Schmidt
  in album: Joseph Schmidt singt Canzonen und Unterhaltungslieder
    type: MusicAlbum
    date published: 2006-08-16
  genre: opera
  genre: schlager
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960448
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP130252722
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T18:48:12Z
  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 0x0bb40bbaa4e6a6b91effbce1352433f0d5e897df9c885dd5b3889a7202a568c1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ATP130252722.
    date published: 2026-07-31T18:48:12Z
  audio: La Paloma
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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track: Du bist die Welt für mich (Der singende Traum)
  type: MusicRecording
  duration: PT3M19S
  duration ms: 199933
  explicit: false
  by artist: Joseph Schmidt
  by artist: Richard Tauber
  in album: Joseph Schmidt singt Canzonen und Unterhaltungslieder
    type: MusicAlbum
    date published: 2006-08-16
  genre: opera
  genre: schlager
  isrc code: ATP130252735
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Du bist die Welt für mich (Der singende Traum)
track: Es wird im Leben dir mehr genommen als gegeben (Heut´ ist der schönste Tag in meinem Leben)
track: A Star Fell From Heaven (A Star Fell From Heaven)

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960334

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATP130252735

OTSTimestamp
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value: 2026-07-31T02:19:15Z

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
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date published: 2026-07-31T02:19:15Z

Du bist die Welt für mich (Der singende Traum)
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Es wird im Leben dir mehr genommen als gegeben (Heut´ ist der schönste Tag in meinem Leben)
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audio: Es wird im Leben dir mehr genommen als gegeben (Heut´ ist der schönste Tag in meinem Leben)
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A Star Fell From Heaven (A Star Fell From Heaven)
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audio: A Star Fell From Heaven (A Star Fell From Heaven)
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Joseph Schmidt singt Arien
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track: Nessun Dorma (Turandot)
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The Great Joseph Schmidt
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Joseph Schmidt - The Complete EMI Recordings Vol. 2
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track: O marenariello - Het vissersmeisje (Das Fischermädchen) - 1992 Remastered Version
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track: Ernst: "Liebe kleine Frau, ich muß dir was gesteh'n"
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  by artist: Fritz Lohner
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Joseph Schmidt - Complete EMI Recordings Vol. 1 (1929-1937)
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date published: 1992

The Unforgettable Voice Of Joseph Schmidt
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date published: 1969-12-01

Récital de chant (Mono Version)
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date published: 1961-01-01

A Star Falls from Heaven
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Meister Tenöre
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date published: 2017-01-02

Jahrhundertstimmen - Unvergessen Vol. 1
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date published: 2012-10-30

The Original Recordings 1929-1930
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date published: 2012-10-27