István Horváth
type: MusicGroup
description: István Horváth (1 September 1935, Paks) is a former Hungarian communist politician, who served as Interior Minister twice: between 1980–1985 and between 1987 and 1990. Horvath studied law at ELTE. He
popularity: 13
followers: 491
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5c65c6c7fbe3b29377628a85eb67acebcb82909d1426ecca9dc23c0a802fdec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953620
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953620
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ebef9d5-40f9-4755-84bc-21b47553978c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ebef9d5-40f9-4755-84bc-21b47553978c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1ebef9d5-40f9-4755-84bc-21b47553978c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:36:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5c65c6c7fbe3b29377628a85eb67acebcb82909d1426ecca9dc23c0a802fdec","name":"István Horváth","registered_at":"2026-06-14T07:38:41Z","symbol":"NIM0383904","token_address":"0xe340610db59055df68f8897dd8c312db250d28d0","type":"artist","uuid":"1ebef9d5-40f9-4755-84bc-21b47553978c"}
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 0xc5c65c6c7fbe3b29377628a85eb67acebcb82909d1426ecca9dc23c0a802fdec. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ebef9d5-40f9-4755-84bc-21b47553978c.json and https://artists.proofprofile.net/proofs/artist/1ebef9d5-40f9-4755-84bc-21b47553978c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T09:36:10Z
  text: {"copyright_id":"0xc5c65c6c7fbe3b29377628a85eb67acebcb82909d1426ecca9dc23c0a802fdec","name":"István Horváth","registered_at":"2026-06-14T07:38:41Z","symbol":"NIM0383904","token_address":"0xe340610db59055df68f8897dd8c312db250d28d0","type":"artist","uuid":"1ebef9d5-40f9-4755-84bc-21b47553978c"}
album: Hej, Rigo, Rigo
  type: MusicAlbum
  date published: 2015-07-01
album: Hej, Rigo, Rigo
  type: MusicAlbum
  date published: 2015-07-01
  track: Hej, Rigo, Rigo (Hey Rigo, Rigo)
    type: MusicRecording
    duration: PT2M15S
    duration ms: 135293
    explicit: false
    by artist: István Horváth
    in album: Hej, Rigo, Rigo
      type: MusicAlbum
      date published: 2015-07-01
    isrc code: HUA251030401
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T16:39:26+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xab27c74f896ddfdfd5eae5c294f61cd803a76e910a895af8b820778e193a8126
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 956560
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956560
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251030401
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T23:28:02Z
    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 0xab27c74f896ddfdfd5eae5c294f61cd803a76e910a895af8b820778e193a8126. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/HUA251030401.
      date published: 2026-07-03T23:28:02Z
    audio: Hej, Rigo, Rigo (Hey Rigo, Rigo)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 82.873
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.465
      additional property: Energy
        type: PropertyValue
        value: 0.745
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.776
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.47
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.76
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.256
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Cso, cso, cso, kukoricacso (Ear, Ear, Corn-Ear)
    type: MusicRecording
    duration: PT2M6S
    duration ms: 126306
    explicit: false
    by artist: István Horváth
    in album: Hej, Rigo, Rigo
      type: MusicAlbum
      date published: 2015-07-01
    isrc code: HUA251030422
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:14:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbdf8dd6f028b6ad1d211552a5d50c03321681001cbd91fcc5669606628a6142a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HUA251030422
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0xbdf8dd6f028b6ad1d211552a5d50c03321681001cbd91fcc5669606628a6142a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/HUA251030422.
      date published: 2026-07-04T14:03:39Z
    audio: Cso, cso, cso, kukoricacso (Ear, Ear, Corn-Ear)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.677
      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: 0.454
      additional property: Energy
        type: PropertyValue
        value: 0.525
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.585
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.024
      additional property: Liveness
        type: PropertyValue
        value: 0.836
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.934

Loudness (dB)
type: PropertyValue
value: -11.701

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Minor