Saint Petersburg Orchestra Opera
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea79e30d96e152ab8efdc3389ea4e75fa76a05dab2bb971425066d0c976e40c. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/353b2685-4d02-4db1-9fd1-8ea8951cbc6f.json and https://artists.proofprofile.net/proofs/artist/353b2685-4d02-4db1-9fd1-8ea8951cbc6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:27:01Z
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album: Bach, Boccherini & Haydn
  type: MusicAlbum
  date published: 2015-11-13
album: Classical Impressions
  type: MusicAlbum
  date published: 2016-02-17
album: Bach: Brandenburg Concerto 4 & 5
  type: MusicAlbum
  date published: 2022-10-21
track: Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio

Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
type: MusicRecording
duration: PT2M43S
duration ms: 163933
explicit: false
by artist: Saint Petersburg Orchestra Opera
by artist: Alexander Titov
in album: Classical Choice: Famous Overtures and Adagios
  type: MusicAlbum
  date published: 2022-10-14
popularity: 9
isrc code: DEKB72072240
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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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1f504ba52c456bd4db8336ce790abff57a8b4cc74ec0a312ede5eb7667da4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEKB72072240.
  date published: 2026-07-08T03:22:41Z
audio: Brandenburg Concerto No. 1 in F Major, BWV 1046: II. Adagio
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