Maria Barakova
type: MusicGroup
popularity: 3
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: 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
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1885c18ad4b844f6b1cefe41315ec5545ffb5165ab771ff68b362658e2b9b6. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d2a8053-773b-4715-bb23-facdb2804fd0.json and https://artists.proofprofile.net/proofs/artist/7d2a8053-773b-4715-bb23-facdb2804fd0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-18T03:01:36Z
  text: {"copyright_id":"0xdb1885c18ad4b844f6b1cefe41315ec5545ffb5165ab771ff68b362658e2b9b6","name":"Maria Barakova","registered_at":"2026-06-17T09:13:20Z","symbol":"NIM1349048","token_address":"0x018c611dfd8d4d4071414aa6b9e715b17c6ff8a0","type":"artist","uuid":"7d2a8053-773b-4715-bb23-facdb2804fd0"}
track: Lady Macbeth of Mtsensk District, Op. 29, Act IV Scene 9: Vstaváy! Po mestám! Žívo!

Lady Macbeth of Mtsensk District, Op. 29, Act IV Scene 9: Vstaváy! Po mestám! Žívo!
type: MusicRecording
duration: PT8M2S
duration ms: 482040
explicit: false
by artist: Dmitri Shostakovich
by artist: Patrick Guetti
by artist: Dmitry Belosselskiy
by artist: Maria Barakova
by artist: Tanglewood Festival Chorus
by artist: Boston Symphony Orchestra
by artist: Andris Nelsons
in album: Shostakovich: Lady Macbeth of Mtsensk District, Op. 29
  type: MusicAlbum
  date published: 2025-03-27
isrc code: DEN962435528
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN962435528
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9822457de23f835e94f649fa2119615be176437344a3686137079b80a71df4ce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEN962435528.
  date published: 2026-07-02T05:09:12Z
audio: Lady Macbeth of Mtsensk District, Op. 29, Act IV Scene 9: Vstaváy! Po mestám! Žívo!
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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: 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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