Kall
type: MusicGroup
popularity: 2
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78fd808a18fb8b15aa6488bb322a4b2bac1a61507420f9afd4b9c3cfcf3a21df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953996
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953996
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ffd42c6-29e4-43e9-85ee-95c35764a020.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2ffd42c6-29e4-43e9-85ee-95c35764a020.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2ffd42c6-29e4-43e9-85ee-95c35764a020
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:04:35Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd808a18fb8b15aa6488bb322a4b2bac1a61507420f9afd4b9c3cfcf3a21df. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ffd42c6-29e4-43e9-85ee-95c35764a020.json and https://artists.proofprofile.net/proofs/artist/2ffd42c6-29e4-43e9-85ee-95c35764a020.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
album: Ksafnika
  type: MusicAlbum
  date published: 2025-07-04
  track: Ksafnika
    type: MusicRecording
    duration: PT3M42S
    duration ms: 222500
    explicit: false
    by artist: Kall
    in album: Ksafnika
      type: MusicAlbum
      date published: 2025-07-04
    isrc code: QZTBA2540519
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T20:22:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe313a0b0ca161e7866b231df3bebb34159f67f5c55054d55e2fb54ec646e6a40
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2540519
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xe313a0b0ca161e7866b231df3bebb34159f67f5c55054d55e2fb54ec646e6a40. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBA2540519.
      date published: 2026-07-05T01:12:41Z
    audio: Ksafnika
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.01
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.704
      additional property: Energy
        type: PropertyValue
        value: 0.728
      additional property: Speechiness
        type: PropertyValue
        value: 0.158
      additional property: Acousticness
        type: PropertyValue
        value: 0.422
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.144
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.569
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.54
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Alcal
  type: MusicAlbum
  date published: 2025-10-10