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track: Liebesliederwalzer, Op. 52: II. Am Gesteine rauscht die Flut
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    date published: 2026-07-07T18:39:05Z
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track: Liebesliederwalzer, Op. 52: VIII. Wenn so lind dein Auge mir
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    date published: 2026-07-29T19:35:34Z
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track: Liebesliederwalzer, Op. 52: XI. Nein, es ist nicht auszukommen
track: Liebesliederwalzer, Op. 52: III. O die Frauen
track: Liebesliederwalzer, Op. 52: V. Die grüne Hopfenranke
track: Liebesliederwalzer, Op. 52: IX. Am Donaustrande
track: Liebesliederwalzer, Op. 52: X. O wie sanft die Quelle sich
track: Liebesliederwalzer, Op. 52: XIII. Vögelein durchrauscht die Luft
track: Liebesliederwalzer, Op. 52: XIV. Sieh, wie ist die Welle klar
track: Liebesliederwalzer, Op. 52: XVI. Ein dunkeler Schacht ist Liebe
track: Liebesliederwalzer, Op. 52: XVII. Nicht wandle, mein Licht, dort außen
track: Drei Lieder, Op. 64: III. Fragen

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Liebesliederwalzer, Op. 52: XI. Nein, es ist nicht auszukommen
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T19:35:34Z
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Liebesliederwalzer, Op. 52: III. O die Frauen
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subject of: OpenTimestamps Proof of Existence
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Liebesliederwalzer, Op. 52: V. Die grüne Hopfenranke
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subject of: OpenTimestamps Proof of Existence
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Liebesliederwalzer, Op. 52: IX. Am Donaustrande
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duration: PT2M6S
duration ms: 126800
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Stella Doufexis
by artist: Werner Güra
by artist: Christoph Berner
by artist: Marlis Petersen
by artist: Konrad Jarnot
by artist: Camillo Radicke
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617090
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: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617090
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: 2026-07-07T13:25:45Z
audio: Liebesliederwalzer, Op. 52: IX. Am Donaustrande
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Liebesliederwalzer, Op. 52: X. O wie sanft die Quelle sich
type: MusicRecording
duration: PT0M58S
duration ms: 58533
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Werner Güra
by artist: Camillo Radicke
by artist: Stella Doufexis
by artist: Konrad Jarnot
by artist: Marlis Petersen
by artist: Christoph Berner
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617100
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additional property: CopyrightStatus
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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
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  date published: 2026-07-30T09:37:10Z
audio: Liebesliederwalzer, Op. 52: X. O wie sanft die Quelle sich
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Liebesliederwalzer, Op. 52: XIII. Vögelein durchrauscht die Luft
type: MusicRecording
duration: PT0M44S
duration ms: 44533
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Marlis Petersen
by artist: Christoph Berner
by artist: Camillo Radicke
by artist: Stella Doufexis
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617130
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: OTSBitcoinBlock
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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/FRZ140617130
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d18c921337321ec0b30772cc66308414ec4f8874dee0fa6b328cb97b81f9265. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617130 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Liebesliederwalzer, Op. 52: XIII. Vögelein durchrauscht die Luft
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Liebesliederwalzer, Op. 52: XIV. Sieh, wie ist die Welle klar
type: MusicRecording
duration: PT0M57S
duration ms: 57466
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Werner Güra
by artist: Christoph Berner
by artist: Camillo Radicke
by artist: Konrad Jarnot
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 3
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617140
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-30T15:05:34+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617140
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38Z
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 0xb9023f911c5f9ee1b633391466ee7175d22a543ce2a6e0b39d327bf7a4401ad0. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617140 — a six-check JSON result.
  date published: 2026-07-30T15:42:38Z
audio: Liebesliederwalzer, Op. 52: XIV. Sieh, wie ist die Welle klar
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Liebesliederwalzer, Op. 52: XVI. Ein dunkeler Schacht ist Liebe
type: MusicRecording
duration: PT1M15S
duration ms: 75066
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Christoph Berner
by artist: Stella Doufexis
by artist: Camillo Radicke
by artist: Konrad Jarnot
by artist: Marlis Petersen
by artist: Werner Güra
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617160
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T00:23:53+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xd5779614fa6dc49913b13d4b6fc967f0b0e0e2efe0e82d77a108211a912d188b
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/FRZ140617160
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 0xd5779614fa6dc49913b13d4b6fc967f0b0e0e2efe0e82d77a108211a912d188b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617160 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Liebesliederwalzer, Op. 52: XVI. Ein dunkeler Schacht ist Liebe
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Liebesliederwalzer, Op. 52: XVII. Nicht wandle, mein Licht, dort außen
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duration: PT2M1S
duration ms: 121066
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Christoph Berner
by artist: Werner Güra
by artist: Camillo Radicke
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 2
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617170
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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  value: 2026-07-07T04:19:18+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/FRZ140617170
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 0x3c251b7c169aea83e424f4dad087e3d6e914a8f7db6a496414f7c1fbae6732f5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617170 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Liebesliederwalzer, Op. 52: XVII. Nicht wandle, mein Licht, dort außen
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Drei Lieder, Op. 64: III. Fragen
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duration: PT3M2S
duration ms: 182133
explicit: false
by artist: Johannes Brahms
by artist: Georg Friedrich Daumer
by artist: Christoph Berner
by artist: Werner Güra
by artist: Stella Doufexis
by artist: Konrad Jarnot
by artist: Marlis Petersen
in album: Brahms: Liebesliederwalzer & Neue Liebeslieder
  type: MusicAlbum
  date published: 2007-08-28
popularity: 1
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: FRZ140617210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-31T15:04:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdc9e011a93ee642a93940618a320aa91203a15968cc78e4c4e672c82b9b14ee5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960418
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960418
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T15:20:15Z
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 0xdc9e011a93ee642a93940618a320aa91203a15968cc78e4c4e672c82b9b14ee5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ140617210 — a six-check JSON result.
  date published: 2026-07-31T15:20:15Z
audio: Drei Lieder, Op. 64: III. Fragen
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.329
  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: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.194
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.306
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.592
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major