Anna Kolchina
type: MusicGroup
genre: vocal jazz
popularity: 5
followers: 838
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc61bb18fd601452db437d1626c835f21649552f58c96215bf514461418b889e6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf664910-0225-4883-ab15-13084ff3c4bc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf664910-0225-4883-ab15-13084ff3c4bc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf664910-0225-4883-ab15-13084ff3c4bc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc61bb18fd601452db437d1626c835f21649552f58c96215bf514461418b889e6","name":"Anna Kolchina","registered_at":"2026-06-21T00:22:40Z","symbol":"NIM1761185","token_address":"0x85755313f29163b75ea7fd7a258dc34d218ab33b","type":"artist","uuid":"cf664910-0225-4883-ab15-13084ff3c4bc"}
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 0xc61bb18fd601452db437d1626c835f21649552f58c96215bf514461418b889e6. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf664910-0225-4883-ab15-13084ff3c4bc.json and https://artists.proofprofile.net/proofs/artist/cf664910-0225-4883-ab15-13084ff3c4bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0xc61bb18fd601452db437d1626c835f21649552f58c96215bf514461418b889e6","name":"Anna Kolchina","registered_at":"2026-06-21T00:22:40Z","symbol":"NIM1761185","token_address":"0x85755313f29163b75ea7fd7a258dc34d218ab33b","type":"artist","uuid":"cf664910-0225-4883-ab15-13084ff3c4bc"}
album: Street Of Dreams
  type: MusicAlbum
  date published: 2015-05-13
album: Street of Dreams
  type: MusicAlbum
  date published: 2015-05-13
album: Street Of Dreams
  type: MusicAlbum
  date published: 2015-05-13
album: Street Of Dreams
  type: MusicAlbum
  date published: 2015-05-13
album: Dark Eyes
  type: MusicAlbum
  date published: 2016-09-07
album: Dark Eyes
  type: MusicAlbum
  date published: 2016-09-07
album: Dark Eyes
  type: MusicAlbum
  date published: 2016-09-07
album: Dark Eyes
  type: MusicAlbum
  date published: 2016-09-07
album: Wild Is The Wind
  type: MusicAlbum
  date published: 2017-12-20
album: Wild Is The Wind
  type: MusicAlbum
  date published: 2017-12-20
  track: Wild Is The Wind
    type: MusicRecording
    duration: PT4M50S
    duration ms: 290053
    explicit: false
    by artist: Anna Kolchina
    in album: Wild Is The Wind
      type: MusicAlbum
      date published: 2017-12-20
    genre: vocal jazz
    isrc code: JPI291722801
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T09:04:12+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xdc40c4144afb03a62db3f49f336f44a182698c2c5b32ec93af87a875fe610213
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958711
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958711
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI291722801
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T09:26:32Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc40c4144afb03a62db3f49f336f44a182698c2c5b32ec93af87a875fe610213. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPI291722801.
      date published: 2026-07-19T09:26:32Z
    audio: Wild Is The Wind
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 98.662
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.369
      additional property: Energy
        type: PropertyValue
        value: 0.171
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.926
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.09
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.099
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.094
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Wild Is The Wind
  type: MusicAlbum
  date published: 2018-07-18