Berislav Klobucar
type: MusicGroup
genre: opera
popularity: 11
followers: 43
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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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 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 0xa195517054314d3940aebcfc75bff545cf22b92a526e18074a63719c51d057c5. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4193addf-97f6-47ab-ba50-6a680bf77534.json and https://artists.proofprofile.net/proofs/artist/4193addf-97f6-47ab-ba50-6a680bf77534.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T15:20:52Z
  text: {"copyright_id":"0xa195517054314d3940aebcfc75bff545cf22b92a526e18074a63719c51d057c5","name":"Berislav Klobucar","registered_at":"2026-06-14T11:20:31Z","symbol":"NIM0436811","token_address":"0xd3049862a72fa05e908d13424611424d4b45d7e6","type":"artist","uuid":"4193addf-97f6-47ab-ba50-6a680bf77534"}
album: Siv Wennberg: A Great Primadonna, Vol. 3
  type: MusicAlbum
  date published: 2014-01-01
album: Great Swedish Singers: Gunilla af Malmborg (1963-1985)
  type: MusicAlbum
  date published: 2012-04-01
album: Tchaikovsky: Eugene Onegin, Op. 24, TH 5 (Sung in German) [Live]
  type: MusicAlbum
  date published: 2015-03-03
track: Martha, Act III: "Ach, so fromm"
  type: MusicRecording
  duration: PT2M49S
  duration ms: 169986
  explicit: false
  by artist: Friedrich von Flotow
  by artist: Fritz Wunderlich
  by artist: Berislav Klobucar
  by artist: Berliner Symphoniker
  in album: Icon: Fritz Wunderlich
    type: MusicAlbum
    date published: 2010-08-09
  popularity: 1
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340000807
  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 0x46e7e9ef0508cd7aa9be297faaa0951453c97e0ec6a3e5d6c3d8292b69735f8a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA340000807.
    date published: 2026-07-30T12:45:34Z
  audio: Martha, Act III: "Ach, so fromm"
    type: AudioObject
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    additional property: Mode (Major/Minor)
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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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    additional property: Loudness (dB)
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      value: -17.464
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major