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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
subject of: OpenTimestamps Proof of Existence
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album: Verhulst: Mass, Op. 20
  type: MusicAlbum
  date published: 2003-02-01
album: Wie Is Bang Voor Nederlandse Muziek
  type: MusicAlbum
  date published: 2005-06-21
album: Oboe passion - Arias & concertos by J.S. Bach & sons
  type: MusicAlbum
  date published: 2011-09-27
  track: Liebster Jesu, mein Verlangen BWV 32: Liebster Jesu, mein Verlangen
  track: Wer nur den lieben Gott läßt walten BWV 93: Ich will auf den Herren schaun
  track: Ich bin vergnügt mit meinem Glücke BWV 84: Ich bin vergnügt mit meinem Glücke
  track: Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not
  track: Wer mich liebet, der wird mein Wort halten BWV 74: Komm, komm, mein Herze steht dir offen
album: Arias for Soprano and Oboe from Cantatas by J.S. Bach
  type: MusicAlbum
  date published: 1998-01-01
album: Ladies Only
  type: MusicAlbum
  date published: 2016-09-15
  track: Ellen’s Dritter Gesang (Ave Maria), D.837
album: L'Hiver a cessé
  type: MusicAlbum
  date published: 2015-12-21
album: Jeff Hamburg: Looking East
  type: MusicAlbum
  date published: 2005-02-01
album: Samama: En Hollande
  type: MusicAlbum
  date published: 2001-07-01
album: Markevitch: Orchestral Music, Vol. 6 - Piano Concerto / Cantate / Icare
  type: MusicAlbum
  date published: 2003-11-24

Liebster Jesu, mein Verlangen BWV 32: Liebster Jesu, mein Verlangen
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by artist: Nienke Oostenrijk
by artist: Pauline Oostenrijk
by artist: Lucia Swarts
by artist: Wim Ten Have
by artist: Robert Franenberg
by artist: Rémy Baudet
by artist: Margriet Stok
by artist: Franc Polman
by artist: Siebe Henstra
by artist: Jaap Ter Linden
by artist: Amsterdam Sinfonietta
in album: Oboe passion - Arias & concertos by J.S. Bach & sons
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  date published: 2011-09-27
popularity: 1
genre: classical
genre: classical-piano
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  date published: 2026-07-08T03:22:41Z
audio: Liebster Jesu, mein Verlangen BWV 32: Liebster Jesu, mein Verlangen
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Wer nur den lieben Gott läßt walten BWV 93: Ich will auf den Herren schaun
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by artist: Margriet Stok
by artist: Lucia Swarts
by artist: Rémy Baudet
by artist: Franc Polman
by artist: Wim Ten Have
by artist: Robert Franenberg
by artist: Jaap Ter Linden
by artist: Amsterdam Sinfonietta
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Wer nur den lieben Gott läßt walten BWV 93: Ich will auf den Herren schaun
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Ich bin vergnügt mit meinem Glücke BWV 84: Ich bin vergnügt mit meinem Glücke
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by artist: Nienke Oostenrijk
by artist: Pauline Oostenrijk
by artist: Robert Franenberg
by artist: Franc Polman
by artist: Siebe Henstra
by artist: Rémy Baudet
by artist: Margriet Stok
by artist: Wim Ten Have
by artist: Lucia Swarts
by artist: Jaap Ter Linden
by artist: Amsterdam Sinfonietta
in album: Oboe passion - Arias & concertos by J.S. Bach & sons
  type: MusicAlbum
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popularity: 1
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T06:42:11Z
audio: Ich bin vergnügt mit meinem Glücke BWV 84: Ich bin vergnügt mit meinem Glücke
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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

Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not
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by artist: Rémy Baudet
by artist: Robert Franenberg
by artist: Lucia Swarts
by artist: Franc Polman
by artist: Wim Ten Have
by artist: Jaap Ter Linden
by artist: Amsterdam Sinfonietta
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popularity: 1
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T12:06:10Z
audio: Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not
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Wer mich liebet, der wird mein Wort halten BWV 74: Komm, komm, mein Herze steht dir offen
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genre: classical
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  date published: 2026-07-31T12:24:41Z
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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

Ellen’s Dritter Gesang (Ave Maria), D.837
type: MusicRecording
duration: PT6M21S
duration ms: 381546
explicit: false
by artist: Franz Schubert
by artist: Nienke Oostenrijk
by artist: Marianne Boer
in album: Ladies Only
  type: MusicAlbum
  date published: 2016-09-15
genre: classical
genre: classical-piano
genre: chamber-music
isrc code: NLP731652012
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:59:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb904b2eb206877279fca41e95057d5032bf63950c43b20d8d6962497b81a59e5
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/NLP731652012
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb904b2eb206877279fca41e95057d5032bf63950c43b20d8d6962497b81a59e5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLP731652012.
  date published: 2026-07-08T08:56:20Z
audio: Ellen’s Dritter Gesang (Ave Maria), D.837
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.933
  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: 0.193
  additional property: Energy
    type: PropertyValue
    value: 0.035
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.122
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.061
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.795
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major