František Hrom
type: MusicGroup
popularity: 3
followers: 51
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f2e9bd6c058ac753f1e19b3644754779ec5f9b6acfaed7add905ce9b7d61a6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4d37142-7bc9-4a81-a5b3-bd9ac13707ef.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d4d37142-7bc9-4a81-a5b3-bd9ac13707ef.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d4d37142-7bc9-4a81-a5b3-bd9ac13707ef
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f2e9bd6c058ac753f1e19b3644754779ec5f9b6acfaed7add905ce9b7d61a6e","name":"František Hrom","registered_at":"2026-06-21T02:40:42Z","symbol":"NIM1794370","token_address":"0x562d03d59fa653c4d7508594a596f022bca7bbbe","type":"artist","uuid":"d4d37142-7bc9-4a81-a5b3-bd9ac13707ef"}
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 0x3f2e9bd6c058ac753f1e19b3644754779ec5f9b6acfaed7add905ce9b7d61a6e. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4d37142-7bc9-4a81-a5b3-bd9ac13707ef.json and https://artists.proofprofile.net/proofs/artist/d4d37142-7bc9-4a81-a5b3-bd9ac13707ef.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x3f2e9bd6c058ac753f1e19b3644754779ec5f9b6acfaed7add905ce9b7d61a6e","name":"František Hrom","registered_at":"2026-06-21T02:40:42Z","symbol":"NIM1794370","token_address":"0x562d03d59fa653c4d7508594a596f022bca7bbbe","type":"artist","uuid":"d4d37142-7bc9-4a81-a5b3-bd9ac13707ef"}
album: SVALNATEJ
  type: MusicAlbum
  date published: 2024-07-01
  track: SVALNATEJ
    type: MusicRecording
    duration: PT2M16S
    duration ms: 136533
    explicit: false
    by artist: František Hrom
    in album: SVALNATEJ
      type: MusicAlbum
      date published: 2024-07-01
    isrc code: QZTB32429643
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T12:20:04+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x10690583e4313a21f4f1a9269d2a6e651186f0bb849ee72d73fec8a55f291f4e
    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/QZTB32429643
    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 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 0x10690583e4313a21f4f1a9269d2a6e651186f0bb849ee72d73fec8a55f291f4e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32429643 — a six-check JSON result.
      date published: 2026-07-05T01:12:41Z
    audio: SVALNATEJ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.845
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.658
      additional property: Energy
        type: PropertyValue
        value: 0.855
      additional property: Speechiness
        type: PropertyValue
        value: 0.299
      additional property: Acousticness
        type: PropertyValue
        value: 0.049
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.324
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.564
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.199
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Vánoční čas
  type: MusicAlbum
  date published: 2024-12-20