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type: MusicGroup
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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track: Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante
track: Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
track: Brandenburg Concerto No. 2 in F Major, BWV 1047: I. —
track: Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
track: Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
track: Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro

Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante
type: MusicRecording
duration: PT3M38S
duration ms: 218866
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Bettina Simon
by artist: Zsolt Kallo
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
  type: MusicAlbum
  date published: 2016-05-06
genre: classical
genre: classical-piano
isrc code: HUA253278702
additional property: CopyrightID
additional property: CopyrightStatus
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39610fe5959c5916630d6803f0585bb7adb7376a506f42b5b5a0fd646120a3fc. 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/HUA253278702.
  date published: 2026-07-08T03:22:41Z
audio: Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante
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Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
type: MusicRecording
duration: PT4M27S
duration ms: 267240
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Bettina Simon
by artist: Zsolt Kallo
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
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  date published: 2016-05-06
genre: classical
genre: classical-piano
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto
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Brandenburg Concerto No. 2 in F Major, BWV 1047: I. —
type: MusicRecording
duration: PT4M42S
duration ms: 282106
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Marek Niewiedzial
by artist: Zsolt Kallo
by artist: László Borsódy
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
  type: MusicAlbum
  date published: 2016-05-06
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ee394a379b7364ad61e04e959b25f40b5efc1c372c90b1c198f243e0404f46. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HUA253278605.
  date published: 2026-07-30T17:23:26Z
audio: Brandenburg Concerto No. 2 in F Major, BWV 1047: I. —
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isrc code: HUA253278605
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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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, BWV 1047: II. Andante
type: MusicRecording
duration: PT3M17S
duration ms: 197840
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Marek Niewiedzial
by artist: Zsolt Kallo
by artist: László Borsódy
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
  type: MusicAlbum
  date published: 2016-05-06
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
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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

Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
type: MusicRecording
duration: PT2M47S
duration ms: 167253
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Marek Niewiedzial
by artist: Zsolt Kallo
by artist: László Borsódy
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
  type: MusicAlbum
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genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T04:14:58Z
audio: Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
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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

Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
type: MusicRecording
duration: PT6M41S
duration ms: 401360
explicit: false
by artist: Johann Sebastian Bach
by artist: Gábor Prehoffer
by artist: Bettina Simon
by artist: Zsolt Kallo
by artist: Capella Savaria
in album: Bach: Brandenburg Concertos
  type: MusicAlbum
  date published: 2016-05-06
genre: classical
genre: classical-piano
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T01:44:32Z
audio: Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro
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  additional property: Acousticness
    type: PropertyValue
    value: 0.829
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.002
  additional property: Liveness
    type: PropertyValue
    value: 0.236
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.671
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.89
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HUA253278701
additional property: CopyrightID
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: 960494
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-08-01T01:44:32+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA253278701
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960494
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960494
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32+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 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