Alexander Spendiarov
type: MusicGroup
popularity: 5
followers: 153
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xc99e905e404ee0ff2ab3309fa84bea3093687eceb5f18bbcbf5c4a1f3a131934
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954125
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954125
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c043f3a-6a5f-4210-8dd0-363f7cd131a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7c043f3a-6a5f-4210-8dd0-363f7cd131a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7c043f3a-6a5f-4210-8dd0-363f7cd131a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T18:27:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc99e905e404ee0ff2ab3309fa84bea3093687eceb5f18bbcbf5c4a1f3a131934","name":"Alexander Spendiarov","registered_at":"2026-06-17T08:48:54Z","symbol":"NIM1343223","token_address":"0x538423631813c4f0e6635efb8af811b41b39dbb2","type":"artist","uuid":"7c043f3a-6a5f-4210-8dd0-363f7cd131a8"}
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 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 0xc99e905e404ee0ff2ab3309fa84bea3093687eceb5f18bbcbf5c4a1f3a131934. Chain 2 (Bitcoin): anchored in block 954125 (2026-06-17T18:27:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c043f3a-6a5f-4210-8dd0-363f7cd131a8.json and https://artists.proofprofile.net/proofs/artist/7c043f3a-6a5f-4210-8dd0-363f7cd131a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T18:27:28Z
  text: {"copyright_id":"0xc99e905e404ee0ff2ab3309fa84bea3093687eceb5f18bbcbf5c4a1f3a131934","name":"Alexander Spendiarov","registered_at":"2026-06-17T08:48:54Z","symbol":"NIM1343223","token_address":"0x538423631813c4f0e6635efb8af811b41b39dbb2","type":"artist","uuid":"7c043f3a-6a5f-4210-8dd0-363f7cd131a8"}
album: Alexander Spendiarov: Crimean Sketches, Op. 9
  type: MusicAlbum
  date published: 2014-04-02
album: Spendiarov: Three Palms, Symphonic Poem, Op. 10 (Digitally Remastered)
  type: MusicAlbum
  date published: 2014-06-29
album: Alexander Spendiarov: Crimean Sketches, Op. 9
  type: MusicAlbum
  date published: 2020-11-02
album: Spendiarov: Complete Piano Works & Chamber Works with Piano
  type: MusicAlbum
  date published: 2021-01-15
  track: Berceuse, Op. 3 No. 2 (Version for Piano)
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196613
    explicit: false
    by artist: Alexander Spendiarov
    in album: Spendiarov: Complete Piano Works & Chamber Works with Piano
      type: MusicAlbum
      date published: 2021-01-15
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956302
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI192035113
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:30:09Z
    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 0x2013ac18a60aeb9632f66f5230b42fca9ad47ea4c4fff53da108921dbd3db57c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI192035113.
      date published: 2026-07-02T03:30:09Z
    audio: Berceuse, Op. 3 No. 2 (Version for Piano)
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      additional property: Tempo (BPM)
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        value: 137.402
      additional property: Musical Key
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      additional property: Mode (Major/Minor)
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        value: 1
      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
        type: PropertyValue
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      additional property: Acousticness
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      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
        type: PropertyValue
        value: -33.024
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Spendiarov: Complete Piano Works & Chamber Works with Piano
  type: MusicAlbum
  date published: 2021-01-15