Mate Valtr
type: MusicGroup
popularity: 5
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x122c5bc3c2493bbc68edb52552cfa4b28dca1029e39773fdca4974d4c75f9258
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e837b8d0-5e9a-473e-90b2-2b9507f6f65a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e837b8d0-5e9a-473e-90b2-2b9507f6f65a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e837b8d0-5e9a-473e-90b2-2b9507f6f65a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x122c5bc3c2493bbc68edb52552cfa4b28dca1029e39773fdca4974d4c75f9258","name":"Mate Valtr","registered_at":"2026-06-21T09:10:54Z","symbol":"NIM1884835","token_address":"0x8b8ca74647b1994b813644fc688b3ed3c3579ed9","type":"artist","uuid":"e837b8d0-5e9a-473e-90b2-2b9507f6f65a"}
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 0x122c5bc3c2493bbc68edb52552cfa4b28dca1029e39773fdca4974d4c75f9258. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e837b8d0-5e9a-473e-90b2-2b9507f6f65a.json and https://artists.proofprofile.net/proofs/artist/e837b8d0-5e9a-473e-90b2-2b9507f6f65a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x122c5bc3c2493bbc68edb52552cfa4b28dca1029e39773fdca4974d4c75f9258","name":"Mate Valtr","registered_at":"2026-06-21T09:10:54Z","symbol":"NIM1884835","token_address":"0x8b8ca74647b1994b813644fc688b3ed3c3579ed9","type":"artist","uuid":"e837b8d0-5e9a-473e-90b2-2b9507f6f65a"}
album: Spirit Away
  type: MusicAlbum
  date published: 2015-02-20
  track: Riverside
    type: MusicRecording
    duration: PT10M0S
    duration ms: 600002
    explicit: false
    by artist: Mate Valtr
    in album: Spirit Away
      type: MusicAlbum
      date published: 2015-02-20
    isrc code: UST8K1532432
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T21:42:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x262514a3a7b0e97cec755a871c7ad14d0443158a2c51b9c20e60f6c51286bbb3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958331
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958331
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UST8K1532432
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:44:49Z
    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 0x262514a3a7b0e97cec755a871c7ad14d0443158a2c51b9c20e60f6c51286bbb3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:49Z), 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/UST8K1532432.
      date published: 2026-07-17T00:44:49Z
    audio: Riverside
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.455
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.155
      additional property: Energy
        type: PropertyValue
        value: 0.729
      additional property: Speechiness
        type: PropertyValue
        value: 0.162
      additional property: Acousticness
        type: PropertyValue
        value: 0.987
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.598
      additional property: Liveness
        type: PropertyValue
        value: 0.378
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.024
      additional property: Loudness (dB)
        type: PropertyValue
        value: -22.173
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major