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subject of: OpenTimestamps Proof of Existence
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album: Classical Concertos: Mozart, Violin Concertos 3 and 4
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album: Brandenburg Concerto
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  track: Brandenburg Concerto, No. 2, in F Major, Andante
  track: Brandenburg Concerto, No. 2, in F Major, Allegro Assai
  track: Brandenburg Concerto, No. 1, in F Major, Allegro
  track: Brandenburg Concerto, No. 1, in F Major, Adagio
  track: Brandenburg Concerto, No. 1, in F Major, Menuetto
  track: Brandenburg Concerto, No. 2, in F Major, Allegro
  track: Brandenburg Concerto, No. 3, in G Major, Allegro - Adagio
  track: Brandenburg Concerto, No. 3, in G Major, Allegro

Brandenburg Concerto, No. 1, in F Major, Allegro, Pt. 2
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by artist: Helmut Winschermann
by artist: The German Bach Soloists
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popularity: 2
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genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Brandenburg Concerto, No. 1, in F Major, Allegro, Pt. 2
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Brandenburg Concerto, No. 2, in F Major, Andante
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by artist: Helmut Winschermann
by artist: The German Bach Soloists
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Brandenburg Concerto, No. 2, in F Major, Andante
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Brandenburg Concerto, No. 2, in F Major, Allegro Assai
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by artist: Helmut Winschermann
by artist: The German Bach Soloists
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Brandenburg Concerto, No. 2, in F Major, Allegro Assai
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Brandenburg Concerto, No. 1, in F Major, Allegro
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duration: PT4M2S
duration ms: 242066
explicit: false
by artist: Johann Sebastian Bach
by artist: Helmut Winschermann
by artist: The German Bach Soloists
in album: Brandenburg Concerto
  type: MusicAlbum
  date published: 2020-04-16
popularity: 3
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:36:16Z
audio: Brandenburg Concerto, No. 1, in F Major, Allegro
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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

Brandenburg Concerto, No. 1, in F Major, Adagio
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by artist: The German Bach Soloists
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popularity: 3
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T10:42:33Z
audio: Brandenburg Concerto, No. 1, in F Major, Adagio
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additional property: OTSVerifyInstructions
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Brandenburg Concerto, No. 1, in F Major, Menuetto
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by artist: The German Bach Soloists
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genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Brandenburg Concerto, No. 1, in F Major, Menuetto
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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

Brandenburg Concerto, No. 2, in F Major, Allegro
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duration: PT4M45S
duration ms: 285066
explicit: false
by artist: Johann Sebastian Bach
by artist: Helmut Winschermann
by artist: The German Bach Soloists
in album: Brandenburg Concerto
  type: MusicAlbum
  date published: 2020-04-16
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9377b3cfdce8a0e597fd521a47d0cad644f449c97fee0748a305042f3b58ab6e. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBBXS1166159.
  date published: 2026-07-31T04:14:58Z
audio: Brandenburg Concerto, No. 2, in F Major, Allegro
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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isrc code: GBBXS1166159
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
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Brandenburg Concerto, No. 3, in G Major, Allegro - Adagio
type: MusicRecording
duration: PT6M2S
duration ms: 362933
explicit: false
by artist: Johann Sebastian Bach
by artist: Helmut Winschermann
by artist: The German Bach Soloists
in album: Brandenburg Concerto
  type: MusicAlbum
  date published: 2020-04-16
popularity: 2
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a5f7b9f3ae61651536cd04bbd5388cbb811fe1e83918e1107d80c4a20c4ae4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBXS1166162.
  date published: 2026-07-31T12:24:41Z
audio: Brandenburg Concerto, No. 3, in G Major, Allegro - Adagio
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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Brandenburg Concerto, No. 3, in G Major, Allegro
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duration: PT2M58S
duration ms: 178733
explicit: false
by artist: Johann Sebastian Bach
by artist: Helmut Winschermann
by artist: The German Bach Soloists
in album: Brandenburg Concerto
  type: MusicAlbum
  date published: 2020-04-16
popularity: 1
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe186200a89cd0ae3718f94f34849e77a68eb08877233a63a25a0f53725bc4f2e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBXS1166163.
  date published: 2026-07-31T12:24:41Z
audio: Brandenburg Concerto, No. 3, in G Major, Allegro
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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