Concerto Armonico Budapest
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additional property: OTSVerifyInstructions
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09da2a26629ec7897c718bde920c034afa0d2aeda8619aa9ae7ea2fcd59b3463. 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/a044cb5b-4751-4a5a-8e60-1bafc393cd85.json and https://artists.proofprofile.net/proofs/artist/a044cb5b-4751-4a5a-8e60-1bafc393cd85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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track: Symphony in G Major, Op. 6, No. 1, W. C7: I. Allegro con brio

Symphony in G Major, Op. 6, No. 1, W. C7: I. Allegro con brio
type: MusicRecording
duration: PT8M53S
duration ms: 533693
explicit: false
by artist: Johann Christian Bach
by artist: Miklós Spányi
by artist: Concerto Armonico Budapest
by artist: Péter Szűts
in album: Johann Christian Bach: Symphonies
  type: MusicAlbum
  date published: 2015-01-01
genre: classical
isrc code: HUA253144801
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525189153570e227254973d2f36652ef0334c0706825e0af3af882b063b8fcad. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA253144801.
  date published: 2026-07-08T03:20:19Z
audio: Symphony in G Major, Op. 6, No. 1, W. C7: I. Allegro con brio
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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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