Charlotta Doubravova
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ca8c8b6d68b19a2c662c6887507ed689fdb5a4c0d4b0e9d8d546bec69be8ee6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953949
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953949
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d4301b9-7be4-4756-b9cb-16121a1db1e8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1d4301b9-7be4-4756-b9cb-16121a1db1e8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1d4301b9-7be4-4756-b9cb-16121a1db1e8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:28:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6ca8c8b6d68b19a2c662c6887507ed689fdb5a4c0d4b0e9d8d546bec69be8ee6","name":"Charlotta Doubravova","registered_at":"2026-06-15T23:48:02Z","symbol":"NIM0870517","token_address":"0xc32287537bd711693b50d72b6100bf5adb52a323","type":"artist","uuid":"1d4301b9-7be4-4756-b9cb-16121a1db1e8"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca8c8b6d68b19a2c662c6887507ed689fdb5a4c0d4b0e9d8d546bec69be8ee6. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d4301b9-7be4-4756-b9cb-16121a1db1e8.json and https://artists.proofprofile.net/proofs/artist/1d4301b9-7be4-4756-b9cb-16121a1db1e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0x6ca8c8b6d68b19a2c662c6887507ed689fdb5a4c0d4b0e9d8d546bec69be8ee6","name":"Charlotta Doubravova","registered_at":"2026-06-15T23:48:02Z","symbol":"NIM0870517","token_address":"0xc32287537bd711693b50d72b6100bf5adb52a323","type":"artist","uuid":"1d4301b9-7be4-4756-b9cb-16121a1db1e8"}
track: Sestry
  type: MusicRecording
  duration: PT2M39S
  duration ms: 159528
  explicit: false
  by artist: Kateřina Bohatová
  by artist: Charlotta Doubravova
  by artist: Katerina Bohatova
  in album: Krysar 1996 - 2018
    type: MusicAlbum
    date published: 2018-03-30
  isrc code: CZA231800110
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T01:33:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x01e68e7dc9bd1a543f695e8bb40410c5198f4bf64bee275dc30c6507c820e4f3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA231800110
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 0x01e68e7dc9bd1a543f695e8bb40410c5198f4bf64bee275dc30c6507c820e4f3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CZA231800110.
    date published: 2026-07-02T03:55:08Z
  audio: Sestry
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 114.357
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.574
    additional property: Energy
      type: PropertyValue
      value: 0.256
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.082
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.041
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.427
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major