Maria Bierbaumer
type: MusicGroup
popularity: 4
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x523c30e650dfd6cae7ae5cd4bae628e7b8b8972f8c86b8d6f869d42ce74a1a3b
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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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: OTSTimestamp
  type: PropertyValue
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523c30e650dfd6cae7ae5cd4bae628e7b8b8972f8c86b8d6f869d42ce74a1a3b. Chain 2 (Bitcoin): anchored in block 954019 (2026-06-16T23:44:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35b0f64b-9c29-4c67-ba88-31c69592670a.json and https://artists.proofprofile.net/proofs/artist/35b0f64b-9c29-4c67-ba88-31c69592670a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:44:13Z
  text: {"copyright_id":"0x523c30e650dfd6cae7ae5cd4bae628e7b8b8972f8c86b8d6f869d42ce74a1a3b","name":"Maria Bierbaumer","registered_at":"2026-06-16T08:35:11Z","symbol":"NIM0996414","token_address":"0x11a7c5d8f8b78ef5676b03bd278a78fa69fbbf9b","type":"artist","uuid":"35b0f64b-9c29-4c67-ba88-31c69592670a"}
track: Mozart: Le nozze di Figaro, K. 492, Act 3: Recitativo. "Andiam, andiam, bel paggio" (Barbarina, Cherubino)

Mozart: Le nozze di Figaro, K. 492, Act 3: Recitativo. "Andiam, andiam, bel paggio" (Barbarina, Cherubino)
type: MusicRecording
duration: PT0M42S
duration ms: 42866
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Riccardo Muti
by artist: Ann Murray
by artist: Maria Bierbaumer
by artist: Wiener Philharmoniker
in album: Mozart: Le nozze di Figaro
  type: MusicAlbum
  date published: 1987-01-01
genre: classical
genre: classical-era
isrc code: GBAYC8600672
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC8600672
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+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: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa286381478e38ed91cc32352fe487f944d1fc287abfdf8e010c5a9edae93bb6c. 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/GBAYC8600672.
  date published: 2026-07-08T03:22:41Z
audio: Mozart: Le nozze di Figaro, K. 492, Act 3: Recitativo. "Andiam, andiam, bel paggio" (Barbarina, Cherubino)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.049
  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
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    value: 0.293
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.033
  additional property: Key Name
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    value: C
  additional property: Mode Name
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    value: Minor