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type: MusicGroup
genre: classical
genre: classical piano
popularity: 22
followers: 542
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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 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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a6ada3978cb86c68a8ad9decac7a0244c6f64428de12c0428d24d2cfa51fe5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72d55367-c306-4cb3-af90-9044ec9ae299.json and https://artists.proofprofile.net/proofs/artist/72d55367-c306-4cb3-af90-9044ec9ae299.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
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album: D. Scarlatti: 12 Keyboard Sonatas
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  date published: 2023-09-22
  track: Keyboard Sonata in D Minor, Kk. 213
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    duration: PT8M50S
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    by artist: Domenico Scarlatti
    by artist: Giovanni Mazzocchin
    in album: D. Scarlatti: 12 Keyboard Sonatas
      type: MusicAlbum
      date published: 2023-09-22
    genre: classical
    genre: early-music
    genre: baroque
    genre: italian-baroque
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    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSVerificationAPI
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      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82300514
    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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003c91639cefef25cbc678ed9bffcc3fb91120d33f46921ee1d76bc027189f80. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82300514 — a six-check JSON result.
      date published: 2026-07-08T03:22:41Z
    audio: Keyboard Sonata in D Minor, Kk. 213
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album: D. Scarlatti: Keyboard Sonatas, Vol. 1
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  date published: 2023-05-12
album: D. Scarlatti: Keyboard Sonatas, Vol. 2
  type: MusicAlbum
  date published: 2021-11-05
album: D. Scarlatti: 55 Keyboard Sonatas, Vol. 2
  type: MusicAlbum
  date published: 2023-11-05
album: J.S. Bach: Goldberg Variations, BWV 988 (Live)
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  date published: 2022-08-19
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    explicit: false
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    by artist: Giovanni Mazzocchin
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      date published: 2022-08-19
    genre: classical
    genre: classical-piano
    genre: early-music
    genre: baroque
    genre: chamber-music
    genre: concerto
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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
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
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      date published: 2026-06-13T13:32:09Z
    audio: Goldberg Variations, BWV 988: Var. 4 (2) [Live]
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      additional property: Tempo (BPM)
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      additional property: Mode (Major/Minor)
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      additional property: Time Signature
      additional property: Danceability
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      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
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  track: Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (1) [Live]
  track: Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (2) [Live]
  track: Goldberg Variations, BWV 988: Var. 19 (1) [Live]
album: J.S. Bach: The Well-Tempered Clavier, Book 1
album: J.S. Bach: Goldberg Variations, BWV 988
album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
album: J.S. Bach: Italian Concerto, BWV 971 & Other Works
album: Beethoven: Piano Sonatas Nos. 28-32
album: Scarlatti: Keyboard Sonatas
album: Handel: Miscellaneous Keyboard Works
album: Haydn: Late Piano Sonatas, Nos. 59-62
album: Beethoven: Diabelli Variations, Op. 120 & 6 Bagatelles, Op. 126
album: Beethoven: Late Sonatas
album: Beethoven: Late Sonatas, Opp. 101 & 106 "Hammerklavier"
album: Beethoven: Late Piano Sonatas, Opp. 109-111
album: J.S. Bach: Notebook for Anna Magdalena Bach (1722)
album: Beethoven: Piano Favourites
album: D. Scarlatti: 55 Keyboard Sonatas, Vol. 1
album: Beethoven: Miscellaneous Music, Vol. 2
album: Beethoven: Miscellaneous Music, Vol. 1

Time Signature
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Danceability
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Energy
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Speechiness
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Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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value: 0.919

Loudness (dB)
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value: -24.212

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
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Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (1) [Live]
type: MusicRecording
duration: PT0M34S
duration ms: 34630
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Goldberg Variations, BWV 988 (Live)
  type: MusicAlbum
  date published: 2022-08-19
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82200917
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
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:51:49Z
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 0x3b7e1db1f6c3f1bd208c82fe5ff3932b78815d70e7b42f91a8a5b83774b5048a. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/ITBZ82200917 — a six-check JSON result.
  date published: 2026-07-29T21:51:49Z
audio: Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (1) [Live]
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  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
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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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Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (2) [Live]
type: MusicRecording
duration: PT0M37S
duration ms: 37230
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Goldberg Variations, BWV 988 (Live)
  type: MusicAlbum
  date published: 2022-08-19
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82200949
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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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2509784bf24438b9677f251fe9f20f2eccf74e2e06acbfc0a54febe6c4c999bd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITBZ82200949 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Goldberg Variations, BWV 988: Var. 6, Canone alla seconda (2) [Live]
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  additional property: Musical Key
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Goldberg Variations, BWV 988: Var. 19 (1) [Live]
type: MusicRecording
duration: PT0M38S
duration ms: 38560
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Goldberg Variations, BWV 988 (Live)
  type: MusicAlbum
  date published: 2022-08-19
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82200930
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: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82200930
additional property: OTSTimestamp
  type: PropertyValue
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26de28b21e7959dc8d13f7902eb8a2e343af6641964c7210ca61ed0b40c345ca. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82200930 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Goldberg Variations, BWV 988: Var. 19 (1) [Live]
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J.S. Bach: The Well-Tempered Clavier, Book 1
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date published: 2022-03-18
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  by artist: Giovanni Mazzocchin
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T07:48:45Z
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  by artist: Giovanni Mazzocchin
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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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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317aabaf89cd2447c96c7de767afbc376f5b674d0494f579c65b18056ae10f20. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82200444 — a six-check JSON result.
    date published: 2026-07-31T16:33:26Z
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J.S. Bach: Goldberg Variations, BWV 988
type: MusicAlbum
date published: 2021-10-22

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date published: 2021-10-08
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 3, Menuet in F Major, BWV Anh. 113
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  by artist: Giovanni Mazzocchin
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  genre: classical
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  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
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  additional property: OTSVerificationAPI
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174f650bfe07cc3dff7bd561fc83df74fa80ba17c79df384daf42868b3b51347. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100818 — a six-check JSON result.
    date published: 2026-07-29T19:35:34Z
  audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 3, Menuet in F Major, BWV Anh. 113
    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: Acousticness
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    additional property: Liveness
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track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 12, Gib dich zufrieden und sei stille, BWV 510 [Arr. for Piano]
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  by artist: Giovanni Mazzocchin
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  genre: classical
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T01:32:48Z
  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 0xc7b3f4cf1431b92cbe39049bfa801bfefc9a9e5c7513abd15d42a6d4b08e7f80. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ITBZ82100819 — a six-check JSON result.
    date published: 2026-07-30T01:32:48Z
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    additional property: Danceability
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track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 4, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 114]
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  additional property: OTSVerificationAPI
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  subject of: OpenTimestamps Proof of Existence
  audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 4, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 114]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 13, Gib dich zufrieden und sei stille, BWV 511 [Arr. for Piano]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 5, Menuet in G Minor [Attrib. J.S. Bach's BWV Anh. 115]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 7, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 116]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 6, Rondeau in B-Flat Major [Attrib. J.S. Bach's BWV Anh. 183]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 25, Bist du bei mir, BWV 508 [After Stölzel] [Arr. for Piano]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8a, Polonaise in F Major, BWV Anh. 117a
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8b, Polonaise in F Major, BWV Anh. 117b
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 9, Menuet in B-Flat Major, BWV Anh. 118
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 10, Polonaise in G Minor, BWV Anh. 119
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 11, Wer nur den lieben Gott lässt walten, BWV 691
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 14, Menuet in A Minor, BWV Anh. 120
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 15, Menuet in C Minor, BWV Anh. 121
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 16, Marche in D Major, H. 1 No. 1 [Attrib. J.S. Bach's BWV Anh. 122]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 17, Polonaise in G Minor, H. 1 No. 2 [Attrib. J.S. Bach's BWV Anh. 123]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 18, Marche in G Major, H. 1 No. 3 [Attrib. J.S. Bach's BWV Anh. 124]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 19, Polonaise in G Minor, H. 1 No. 4 [Attrib. J.S. Bach's BWV Anh. 125]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 20a, So oft ich meine Tobackspfeife, BWV 515 [Arr. for Piano]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 21, Menuet in G Major "Fait par Mons. Böhm"
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 22, Musette in D Major, BWV Anh. 126
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 35, Schaff's mit mir, Gott, nach deinem Willen, BWV 514 [Arr. for Piano]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 23, Marche in E-Flat Major, BWV Anh. 127
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 42, O Ewigkeit, du Donnerwort, BWV 513 [Arr. for Piano]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 24, Polonaise in D Minor, BWV Anh. 128
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 27, Sonata in E-Flat Major, Wq. 65 No. 7 [Attrib. J.S. Bach's BWV Anh. 129]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 28, Polonaise in G Major, BWV Anh. 130
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 32, Untitled Piece in F Major, W. A22 [Attrib. J.S. Bach's BWV Anh. 131]
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 36, Menuet in D Minor, BWV Anh. 132
track: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 39, Dir, dir, Jehova, will ich singen, BWV 299 [Arr. for Piano]

CopyrightRegisteredAt
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CopyrightChainExplorerURL
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OTSHash
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OTSBitcoinBlock
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value: 956889

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/956889

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100820

OTSTimestamp
type: PropertyValue
value: 2026-07-06T06:56:49Z

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 0x9c6e1ba8e9acc920e941393eb05ae8aa8433ed595c5913ab1edd7e5de72dc5b9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITBZ82100820 — a six-check JSON result.
date published: 2026-07-06T06:56:49Z

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 4, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 114]
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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
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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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  value: 0.666
additional property: Loudness (dB)
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additional property: Mode Name
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 13, Gib dich zufrieden und sei stille, BWV 511 [Arr. for Piano]
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duration: PT1M11S
duration ms: 71746
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by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
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  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100821
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additional property: CopyrightStatus
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb22bba0ebbd03da7cfb1482156f107d68ec30a529cb14584f8372790a121be6f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100821
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
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 0xb22bba0ebbd03da7cfb1482156f107d68ec30a529cb14584f8372790a121be6f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ITBZ82100821 — a six-check JSON result.
  date published: 2026-07-29T21:09:47Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 13, Gib dich zufrieden und sei stille, BWV 511 [Arr. for Piano]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.539
  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: 0.426
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.868
  additional property: Liveness
    type: PropertyValue
    value: 0.158
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.52
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.681
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 5, Menuet in G Minor [Attrib. J.S. Bach's BWV Anh. 115]
type: MusicRecording
duration: PT1M19S
duration ms: 79906
explicit: false
by artist: Christian Petzold
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100822
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T17:41:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x543b4fda0d9941f30d4677ce5dcd34e17df476e35c339044eb41889395477dcc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959159
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959159
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100822
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T17:48:40Z
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 0x543b4fda0d9941f30d4677ce5dcd34e17df476e35c339044eb41889395477dcc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITBZ82100822 — a six-check JSON result.
  date published: 2026-07-22T17:48:40Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 5, Menuet in G Minor [Attrib. J.S. Bach's BWV Anh. 115]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 100.461
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.368
  additional property: Energy
    type: PropertyValue
    value: 0.047
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.875
  additional property: Liveness
    type: PropertyValue
    value: 0.138
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.6
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.351
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 7, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 116]
type: MusicRecording
duration: PT1M33S
duration ms: 93733
explicit: false
by artist: Christian Petzold
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100823
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T06:34:23+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcffdbeb885cc7077c9e05a009726aa4e7d93cd0ef178fa8fc6e8b663b32409c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100823
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0xcffdbeb885cc7077c9e05a009726aa4e7d93cd0ef178fa8fc6e8b663b32409c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITBZ82100823 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 7, Menuet in G Major [Attrib. J.S. Bach's BWV Anh. 116]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.59
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.317
  additional property: Energy
    type: PropertyValue
    value: 0.104
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.881
  additional property: Liveness
    type: PropertyValue
    value: 0.158
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.9
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.872
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 6, Rondeau in B-Flat Major [Attrib. J.S. Bach's BWV Anh. 183]
type: MusicRecording
duration: PT2M47S
duration ms: 167706
explicit: false
by artist: François Couperin
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-era
genre: early-music
genre: baroque
genre: french-baroque
isrc code: ITBZ82100824
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:44:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa27f8bf9aeb7646703d024f6241f774ceca89b7e1a4e5f1a27d1edef43125126
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100824
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0xa27f8bf9aeb7646703d024f6241f774ceca89b7e1a4e5f1a27d1edef43125126. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITBZ82100824 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 6, Rondeau in B-Flat Major [Attrib. J.S. Bach's BWV Anh. 183]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 151.57
  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: 0.323
  additional property: Energy
    type: PropertyValue
    value: 0.059
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.888
  additional property: Liveness
    type: PropertyValue
    value: 0.121
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.334
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.876
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 25, Bist du bei mir, BWV 508 [After Stölzel] [Arr. for Piano]
type: MusicRecording
duration: PT2M2S
duration ms: 122880
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100825
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:16:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc03ebd446923d5071804043f124253927419b77fb39c7a971b783fa4a0582e76
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/ITBZ82100825
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 0xc03ebd446923d5071804043f124253927419b77fb39c7a971b783fa4a0582e76. 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/ITBZ82100825 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 25, Bist du bei mir, BWV 508 [After Stölzel] [Arr. for Piano]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.834
  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: 0.351
  additional property: Energy
    type: PropertyValue
    value: 0.005
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.848
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.469
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.966
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8a, Polonaise in F Major, BWV Anh. 117a
type: MusicRecording
duration: PT1M11S
duration ms: 71680
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100826
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:44:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x896b96bc37ac13d2c8d5774de292b3896a8d53eac48093a716effc2fe8e55ed7
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/ITBZ82100826
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 0x896b96bc37ac13d2c8d5774de292b3896a8d53eac48093a716effc2fe8e55ed7. 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/ITBZ82100826 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8a, Polonaise in F Major, BWV Anh. 117a
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.128
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.368
  additional property: Energy
    type: PropertyValue
    value: 0.123
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.953
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.649
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.16
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8b, Polonaise in F Major, BWV Anh. 117b
type: MusicRecording
duration: PT1M10S
duration ms: 70933
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100827
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:55:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6c2bddab938626fbcfd5c5950f959ac196d3ad8b3e9fb2e7689e6d522537658a
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/ITBZ82100827
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 0x6c2bddab938626fbcfd5c5950f959ac196d3ad8b3e9fb2e7689e6d522537658a. 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/ITBZ82100827 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 8b, Polonaise in F Major, BWV Anh. 117b
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  additional property: Tempo (BPM)
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    value: 110.911
  additional property: Musical Key
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    type: PropertyValue
    value: 5
  additional property: Danceability
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    value: 0.422
  additional property: Energy
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    value: 0.071
  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.903
  additional property: Liveness
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    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.763
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.277
  additional property: Key Name
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    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 9, Menuet in B-Flat Major, BWV Anh. 118
type: MusicRecording
duration: PT1M12S
duration ms: 72653
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100828
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T12:16:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5b1a3f8e56d51b5dab4bd6cef15b17194784ee6e0cd7638bf0e655f5b6ff8636
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/ITBZ82100828
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 0x5b1a3f8e56d51b5dab4bd6cef15b17194784ee6e0cd7638bf0e655f5b6ff8636. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100828 — a six-check JSON result.
  date published: 2026-07-30T12:45:34Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 9, Menuet in B-Flat Major, BWV Anh. 118
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.98
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.358
  additional property: Energy
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    value: 0.04
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.911
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.683
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.123
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 10, Polonaise in G Minor, BWV Anh. 119
type: MusicRecording
duration: PT1M11S
duration ms: 71573
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100829
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T22:59:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x624ea9047c9e9eacb5eaacf059642c82937f3075c790516075f8feaea902e68a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960163
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960163
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100829
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T23:20:38Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624ea9047c9e9eacb5eaacf059642c82937f3075c790516075f8feaea902e68a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ITBZ82100829 — a six-check JSON result.
  date published: 2026-07-29T23:20:38Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 10, Polonaise in G Minor, BWV Anh. 119
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 127.95
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.379
  additional property: Energy
    type: PropertyValue
    value: 0.1
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.868
  additional property: Liveness
    type: PropertyValue
    value: 0.172
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.806
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.394
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 11, Wer nur den lieben Gott lässt walten, BWV 691
type: MusicRecording
duration: PT2M7S
duration ms: 127626
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100830
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:14:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3ff3cec20c9911fc71213f2acdd5d1b5b11c9c79984d35b1b47bb276ccd28d63
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/ITBZ82100830
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 0x3ff3cec20c9911fc71213f2acdd5d1b5b11c9c79984d35b1b47bb276ccd28d63. 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/ITBZ82100830 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 11, Wer nur den lieben Gott lässt walten, BWV 691
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 174.01
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.22
  additional property: Energy
    type: PropertyValue
    value: 0.041
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.772
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.244
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.622
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 14, Menuet in A Minor, BWV Anh. 120
type: MusicRecording
duration: PT1M9S
duration ms: 69480
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100831
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:15:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7ae11f84a9f50372653d2ef02b236e5e6d0f4f58ffdd445aa7889f451e66b2a
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/ITBZ82100831
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 0xa7ae11f84a9f50372653d2ef02b236e5e6d0f4f58ffdd445aa7889f451e66b2a. 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/ITBZ82100831 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 14, Menuet in A Minor, BWV Anh. 120
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.469
  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: 0.413
  additional property: Energy
    type: PropertyValue
    value: 0.043
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.885
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.78
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.507
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 15, Menuet in C Minor, BWV Anh. 121
type: MusicRecording
duration: PT0M54S
duration ms: 54280
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100832
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T16:32:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbe19f57b3ad0e17b9b47b1ded3c1ac9d7ad6e2f5799f74264314a6d1185c2a34
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960284
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960284
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100832
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26Z
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 0xbe19f57b3ad0e17b9b47b1ded3c1ac9d7ad6e2f5799f74264314a6d1185c2a34. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100832 — a six-check JSON result.
  date published: 2026-07-30T17:23:26Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 15, Menuet in C Minor, BWV Anh. 121
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 166.649
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.284
  additional property: Energy
    type: PropertyValue
    value: 0.051
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.682
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.012
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 16, Marche in D Major, H. 1 No. 1 [Attrib. J.S. Bach's BWV Anh. 122]
type: MusicRecording
duration: PT0M53S
duration ms: 53986
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100833
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T04:51:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43ae6a80e29309e54319094d10462b506d4ccbf82a8a9d5806383a5a57900d46
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960209
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960209
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100833
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T05:15:54Z
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 0x43ae6a80e29309e54319094d10462b506d4ccbf82a8a9d5806383a5a57900d46. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100833 — a six-check JSON result.
  date published: 2026-07-30T05:15:54Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 16, Marche in D Major, H. 1 No. 1 [Attrib. J.S. Bach's BWV Anh. 122]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.417
  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: 0.358
  additional property: Energy
    type: PropertyValue
    value: 0.192
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.916
  additional property: Liveness
    type: PropertyValue
    value: 0.205
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.897
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.338
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 17, Polonaise in G Minor, H. 1 No. 2 [Attrib. J.S. Bach's BWV Anh. 123]
type: MusicRecording
duration: PT1M6S
duration ms: 66853
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100834
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-10T16:38:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd46975dfaa5682dea590cc6246caafe02c90f93ea58f62aca110e1b04b0740ef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100834
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46975dfaa5682dea590cc6246caafe02c90f93ea58f62aca110e1b04b0740ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITBZ82100834 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 17, Polonaise in G Minor, H. 1 No. 2 [Attrib. J.S. Bach's BWV Anh. 123]
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  additional property: Tempo (BPM)
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    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
    value: 0.535
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 18, Marche in G Major, H. 1 No. 3 [Attrib. J.S. Bach's BWV Anh. 124]
type: MusicRecording
duration: PT1M4S
duration ms: 64266
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100835
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T14:52:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf7339802da313b1aa49d9e184ce9dcee75339cb17f2db46e32db84b3b8f19285
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100835
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7339802da313b1aa49d9e184ce9dcee75339cb17f2db46e32db84b3b8f19285. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITBZ82100835 — a six-check JSON result.
  date published: 2026-07-02T03:30:09Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 18, Marche in G Major, H. 1 No. 3 [Attrib. J.S. Bach's BWV Anh. 124]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.012
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.333
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.946
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.734
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 19, Polonaise in G Minor, H. 1 No. 4 [Attrib. J.S. Bach's BWV Anh. 125]
type: MusicRecording
duration: PT1M34S
duration ms: 94586
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100836
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T13:05:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5543b14dd32af0b9cc0096769cadf74c8345ef8a3b797317c7b6519a36e2f336
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960264
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100836
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:36:16Z
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 0x5543b14dd32af0b9cc0096769cadf74c8345ef8a3b797317c7b6519a36e2f336. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITBZ82100836 — a six-check JSON result.
  date published: 2026-07-30T14:36:16Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 19, Polonaise in G Minor, H. 1 No. 4 [Attrib. J.S. Bach's BWV Anh. 125]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.196
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.424
  additional property: Energy
    type: PropertyValue
    value: 0.082
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.898
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 20a, So oft ich meine Tobackspfeife, BWV 515 [Arr. for Piano]
type: MusicRecording
duration: PT0M46S
duration ms: 46866
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100837
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T01:14:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0b7a49dd28272436d791c4675a4b265d4aa3ba0580c5c69eb83b806cff6da772
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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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/ITBZ82100837
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 0x0b7a49dd28272436d791c4675a4b265d4aa3ba0580c5c69eb83b806cff6da772. 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/ITBZ82100837 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 20a, So oft ich meine Tobackspfeife, BWV 515 [Arr. for Piano]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 136.824
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.468
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.778
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.486
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.61
  additional property: Key Name
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  additional property: Mode Name
    type: PropertyValue
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 21, Menuet in G Major "Fait par Mons. Böhm"
type: MusicRecording
duration: PT1M5S
duration ms: 65653
explicit: false
by artist: Georg Böhm
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100838
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T21:54:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca7bc5ba5b43f6597fe6d5055c62e3c1c672dddab5cdbde24017dda5aff1ce8d
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/ITBZ82100838
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 0xca7bc5ba5b43f6597fe6d5055c62e3c1c672dddab5cdbde24017dda5aff1ce8d. 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/ITBZ82100838 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 21, Menuet in G Major "Fait par Mons. Böhm"
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.374
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.396
  additional property: Energy
    type: PropertyValue
    value: 0.03
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 22, Musette in D Major, BWV Anh. 126
type: MusicRecording
duration: PT0M53S
duration ms: 53413
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100839
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T16:46:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa8d6862fd661d3ba553be03cf7805b409161c68b4195cc1131b37536d19072f8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100839
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d6862fd661d3ba553be03cf7805b409161c68b4195cc1131b37536d19072f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITBZ82100839 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 22, Musette in D Major, BWV Anh. 126
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.198
  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: 0.705
  additional property: Energy
    type: PropertyValue
    value: 0.084
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.936
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.928
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 35, Schaff's mit mir, Gott, nach deinem Willen, BWV 514 [Arr. for Piano]
type: MusicRecording
duration: PT0M43S
duration ms: 43186
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100840
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T07:04:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1cc75ab5cb0d0ef8ca88c64832b1b97033a68be17f7542f790aeee0c69387c2c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100840
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc75ab5cb0d0ef8ca88c64832b1b97033a68be17f7542f790aeee0c69387c2c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITBZ82100840 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 35, Schaff's mit mir, Gott, nach deinem Willen, BWV 514 [Arr. for Piano]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.914
  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: 0.442
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.632
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.752
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 23, Marche in E-Flat Major, BWV Anh. 127
type: MusicRecording
duration: PT1M29S
duration ms: 89040
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100841
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T00:17:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf1054a286b7944db8ab5708e919d79e5009da366b21d27eadbe66f53a3e6bad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960179
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960179
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100841
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T00:39:11Z
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 0xcf1054a286b7944db8ab5708e919d79e5009da366b21d27eadbe66f53a3e6bad. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ITBZ82100841 — a six-check JSON result.
  date published: 2026-07-30T00:39:11Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 23, Marche in E-Flat Major, BWV Anh. 127
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.352
  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: 0.338
  additional property: Energy
    type: PropertyValue
    value: 0.158
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.888
  additional property: Liveness
    type: PropertyValue
    value: 0.222
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.895
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.792
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 42, O Ewigkeit, du Donnerwort, BWV 513 [Arr. for Piano]
type: MusicRecording
duration: PT1M19S
duration ms: 79146
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100842
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T23:21:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c1d3891e3daa317cade3c197234917714ab7d01e6d62040b66927e227e1b5ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960327
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/ITBZ82100842
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 0x0c1d3891e3daa317cade3c197234917714ab7d01e6d62040b66927e227e1b5ed. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100842 — a six-check JSON result.
  date published: 2026-07-31T00:26:26Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 42, O Ewigkeit, du Donnerwort, BWV 513 [Arr. for Piano]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.443
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.501
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.141
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.935
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.729
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.199
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 24, Polonaise in D Minor, BWV Anh. 128
type: MusicRecording
duration: PT1M16S
duration ms: 76413
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100843
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:01:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a48c7d56b10127c0030c2b59ce213b4131d675d490ce19f186c3374ead3cc2f
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/ITBZ82100843
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 0x7a48c7d56b10127c0030c2b59ce213b4131d675d490ce19f186c3374ead3cc2f. 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/ITBZ82100843 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 24, Polonaise in D Minor, BWV Anh. 128
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.453
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.413
  additional property: Energy
    type: PropertyValue
    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.911
  additional property: Liveness
    type: PropertyValue
    value: 0.079
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.484
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.788
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 27, Sonata in E-Flat Major, Wq. 65 No. 7 [Attrib. J.S. Bach's BWV Anh. 129]
type: MusicRecording
duration: PT2M45S
duration ms: 165733
explicit: false
by artist: Carl Philipp Emanuel Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
isrc code: ITBZ82100844
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:15:34+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8abe75d0ded72c3727785965e581140cbd35dd4b910227f7820539b74259bd8a
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/ITBZ82100844
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 0x8abe75d0ded72c3727785965e581140cbd35dd4b910227f7820539b74259bd8a. 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/ITBZ82100844 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 27, Sonata in E-Flat Major, Wq. 65 No. 7 [Attrib. J.S. Bach's BWV Anh. 129]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.496
  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: 0.323
  additional property: Energy
    type: PropertyValue
    value: 0.149
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.826
  additional property: Liveness
    type: PropertyValue
    value: 0.258
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.861
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.202
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 28, Polonaise in G Major, BWV Anh. 130
type: MusicRecording
duration: PT1M47S
duration ms: 107226
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100845
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:07:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x81854345f8a9301311fe6dedd20def9d35cc8d4c14b7f1aa4a0b4fd0166cf6e2
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/ITBZ82100845
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 0x81854345f8a9301311fe6dedd20def9d35cc8d4c14b7f1aa4a0b4fd0166cf6e2. 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/ITBZ82100845 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 28, Polonaise in G Major, BWV Anh. 130
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 165.926
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.267
  additional property: Energy
    type: PropertyValue
    value: 0.048
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.921
  additional property: Liveness
    type: PropertyValue
    value: 0.223
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.745
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.273
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 32, Untitled Piece in F Major, W. A22 [Attrib. J.S. Bach's BWV Anh. 131]
type: MusicRecording
duration: PT0M56S
duration ms: 56853
explicit: false
by artist: Johann Christian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
isrc code: ITBZ82100846
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:08:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x72b6d76f520c9897c1f143b11e8f4349abbde4e354256d11c38d4aa3a4dd26ad
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/ITBZ82100846
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 0x72b6d76f520c9897c1f143b11e8f4349abbde4e354256d11c38d4aa3a4dd26ad. 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/ITBZ82100846 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 32, Untitled Piece in F Major, W. A22 [Attrib. J.S. Bach's BWV Anh. 131]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.027
  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
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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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  additional property: Loudness (dB)
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  additional property: Key Name
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 36, Menuet in D Minor, BWV Anh. 132
type: MusicRecording
duration: PT0M42S
duration ms: 42573
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100847
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/960191
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100847
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T01:51:26Z
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 0xc88ab3e3f0e18bbda38d8473a33f337ae216f86559a7f696271ae6ea9ef05a15. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100847 — a six-check JSON result.
  date published: 2026-07-30T01:51:26Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 36, Menuet in D Minor, BWV Anh. 132
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Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 39, Dir, dir, Jehova, will ich singen, BWV 299 [Arr. for Piano]
type: MusicRecording
duration: PT1M13S
duration ms: 73079
explicit: false
by artist: Johann Sebastian Bach
by artist: Giovanni Mazzocchin
in album: J.S. Bach: Notebook for Anna Magdalena Bach (1725)
  type: MusicAlbum
  date published: 2021-10-08
genre: classical
genre: classical-piano
genre: early-music
genre: baroque
genre: chamber-music
genre: concerto
isrc code: ITBZ82100848
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x599481fe3701544294e76d22a7684506bc849fe3113a099d2a596a4cee5c667f
additional property: OTSHash
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/ITBZ82100848
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 0x599481fe3701544294e76d22a7684506bc849fe3113a099d2a596a4cee5c667f. 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/ITBZ82100848 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Notebook for Anna Magdalena Bach (1725) [Excerpts]: No. 39, Dir, dir, Jehova, will ich singen, BWV 299 [Arr. for Piano]
  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: 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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J.S. Bach: Italian Concerto, BWV 971 & Other Works
type: MusicAlbum
date published: 2021-06-04
track: Italian Concerto, BWV 971: I. Allegro
  type: MusicRecording
  duration: PT3M53S
  duration ms: 233106
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Giovanni Mazzocchin
  in album: J.S. Bach: Italian Concerto, BWV 971 & Other Works
    type: MusicAlbum
    date published: 2021-06-04
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: ITBZ82100468
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T09:58:30+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xb9e44808a94bcbfd9801dc61a0c2e19582bf1dc74f97de3af8085f81a5d503a2
  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/ITBZ82100468
  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 0xb9e44808a94bcbfd9801dc61a0c2e19582bf1dc74f97de3af8085f81a5d503a2. 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/ITBZ82100468 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Italian Concerto, BWV 971: I. Allegro
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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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
      type: PropertyValue
      value: 0.882
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.452
    additional property: Key Name
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      value: F
    additional property: Mode Name
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      value: Major
track: Praeludium et partita dei tuono terzo, BWV 833: II. Allemande
  type: MusicRecording
  duration: PT2M16S
  duration ms: 136586
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Giovanni Mazzocchin
  in album: J.S. Bach: Italian Concerto, BWV 971 & Other Works
    type: MusicAlbum
    date published: 2021-06-04
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: ITBZ82100482
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:38:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc374cd9778406c7db82073622bea3e7146b91cc8c02c1845fc2476521a5baa9c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100482
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0xc374cd9778406c7db82073622bea3e7146b91cc8c02c1845fc2476521a5baa9c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100482 — a six-check JSON result.
    date published: 2026-07-08T08:56:20Z
  audio: Praeludium et partita dei tuono terzo, BWV 833: II. Allemande
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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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)
      type: PropertyValue
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    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Praeludium et partita dei tuono terzo, BWV 833: III. Courante
  type: MusicRecording
  duration: PT1M28S
  duration ms: 88973
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Giovanni Mazzocchin
  in album: J.S. Bach: Italian Concerto, BWV 971 & Other Works
    type: MusicAlbum
    date published: 2021-06-04
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: ITBZ82100483
  additional property: CopyrightID
  additional property: CopyrightStatus
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Praeludium et partita dei tuono terzo, BWV 833: III. Courante

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-08-01T02:01:09+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xcaea9a9e3eb000e777b20fcc867772e4731e4b1331df3fd9a4521cb5816f3c12

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960497

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960497

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITBZ82100483

OTSTimestamp
type: PropertyValue
value: 2026-08-01T02:22:04Z

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 0xcaea9a9e3eb000e777b20fcc867772e4731e4b1331df3fd9a4521cb5816f3c12. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ITBZ82100483 — a six-check JSON result.
date published: 2026-08-01T02:22:04Z

Praeludium et partita dei tuono terzo, BWV 833: III. Courante
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 104.694
additional property: Musical Key
  type: PropertyValue
  value: 5
additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.298
additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
  type: PropertyValue
  value: 0.991
additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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  value: 0.578
additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Beethoven: Piano Sonatas Nos. 28-32
type: MusicAlbum
date published: 2021-05-07

Scarlatti: Keyboard Sonatas
type: MusicAlbum
date published: 2021-03-05

Handel: Miscellaneous Keyboard Works
type: MusicAlbum
date published: 2021-01-22

Haydn: Late Piano Sonatas, Nos. 59-62
type: MusicAlbum
date published: 2018-06-01

Beethoven: Diabelli Variations, Op. 120 & 6 Bagatelles, Op. 126
type: MusicAlbum
date published: 2017-08-04

Beethoven: Late Sonatas
type: MusicAlbum
date published: 2016-08-19

Beethoven: Late Sonatas, Opp. 101 & 106 "Hammerklavier"
type: MusicAlbum
date published: 2016-08-05

Beethoven: Late Piano Sonatas, Opp. 109-111
type: MusicAlbum
date published: 2016-02-05

J.S. Bach: Notebook for Anna Magdalena Bach (1722)
type: MusicAlbum
date published: 2022-06-03
track: Notebook for Anna Magdalena Bach (1722) [Excerpts], Air with Variations in C Minor, BWV 991 [Completed by A. Simonetto]: No. 2, Variation I
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  duration: PT0M52S
  duration ms: 52133
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Giovanni Mazzocchin
  in album: J.S. Bach: Notebook for Anna Magdalena Bach (1722)
    type: MusicAlbum
    date published: 2022-06-03
  genre: classical
  genre: classical-piano
  genre: early-music
  genre: baroque
  genre: chamber-music
  genre: concerto
  isrc code: ITBZ82200610
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T19:49:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc9f82cfc67fb1345b4b31d721c80ab126895200ec593b05c45ab584c8aae7911
  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/ITBZ82200610
  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 0xc9f82cfc67fb1345b4b31d721c80ab126895200ec593b05c45ab584c8aae7911. 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/ITBZ82200610 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Notebook for Anna Magdalena Bach (1722) [Excerpts], Air with Variations in C Minor, BWV 991 [Completed by A. Simonetto]: No. 2, Variation I
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 134.436
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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Beethoven: Piano Favourites
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D. Scarlatti: 55 Keyboard Sonatas, Vol. 1
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date published: 2023-10-29

Beethoven: Miscellaneous Music, Vol. 2
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date published: 2023-10-28

Beethoven: Miscellaneous Music, Vol. 1
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date published: 2023-10-08

D. Scarlatti: Keyboard Sonatas, Vol. 2
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date published: 2023-05-26

J.S. Bach: Notebook for Anna Magdalena Bach (1725)
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date published: 2021-10-08

J.S. Bach: Italian Concerto, BWV 971 & Other Works
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date published: 2021-06-04

Beethoven: Piano Sonatas Nos. 28-32
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date published: 2021-05-07

Beethoven: Late Sonatas, Opp. 101 & 106 "Hammerklavier"
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date published: 2016-08-05