Borko
type: MusicGroup
genre: neoclassical
description: Björn Kristjánsson, known professionally as Borko, is an Icelandic musician. His debut album Celebrating Life was released in March 2008 on record labels Morr Music and Kimi Records.Kimi Records: Rele
popularity: 4
followers: 54
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x35e4346e16a7d17114b6d77c9773d56e89502ca7be565af4ddfd73a3f1f701eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f476722b-7ed7-4c79-b15a-db34a61690b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f476722b-7ed7-4c79-b15a-db34a61690b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f476722b-7ed7-4c79-b15a-db34a61690b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
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 0x35e4346e16a7d17114b6d77c9773d56e89502ca7be565af4ddfd73a3f1f701eb. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f476722b-7ed7-4c79-b15a-db34a61690b4.json and https://artists.proofprofile.net/proofs/artist/f476722b-7ed7-4c79-b15a-db34a61690b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
album: Fantasy
  type: MusicAlbum
  date published: 1992-06-16
album: Fantasy
  type: MusicAlbum
  date published: 2013-10-10
album: Fantasy
  type: MusicAlbum
  date published: 2013-10-10
  track: La campanella
    type: MusicRecording
    duration: PT2M54S
    duration ms: 174160
    explicit: false
    by artist: Borko
    in album: Fantasy
      type: MusicAlbum
      date published: 2013-10-10
    genre: neoclassical
    isrc code: RSA131364902
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T12:04:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xae109736fb3e4be77aa859ee9868bd9b066b1d8b23f63ed446b45f87e14f1359
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958410
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958410
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RSA131364902
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T12:18:07Z
    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 0xae109736fb3e4be77aa859ee9868bd9b066b1d8b23f63ed446b45f87e14f1359. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/RSA131364902.
      date published: 2026-07-17T12:18:07Z
    audio: La campanella
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.05
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.516
      additional property: Energy
        type: PropertyValue
        value: 0.59
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.114
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.775
      additional property: Liveness
        type: PropertyValue
        value: 0.217
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.777
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.25
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor