Helena Blehárová
type: MusicGroup
popularity: 10
followers: 462
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x12ddb75a36655e46efdc7b47373dafe57b4e3c69564c55ccaa1bad1fd3decdc2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4724b69f-4200-42a7-934a-e319adb3183c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4724b69f-4200-42a7-934a-e319adb3183c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4724b69f-4200-42a7-934a-e319adb3183c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x12ddb75a36655e46efdc7b47373dafe57b4e3c69564c55ccaa1bad1fd3decdc2","name":"Helena Blehárová","registered_at":"2026-06-16T14:21:23Z","symbol":"NIM1079006","token_address":"0x788d7df00f11daea6d90003019ca0a1b84ea51da","type":"artist","uuid":"4724b69f-4200-42a7-934a-e319adb3183c"}
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 0x12ddb75a36655e46efdc7b47373dafe57b4e3c69564c55ccaa1bad1fd3decdc2. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4724b69f-4200-42a7-934a-e319adb3183c.json and https://artists.proofprofile.net/proofs/artist/4724b69f-4200-42a7-934a-e319adb3183c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T07:39:10Z
  text: {"copyright_id":"0x12ddb75a36655e46efdc7b47373dafe57b4e3c69564c55ccaa1bad1fd3decdc2","name":"Helena Blehárová","registered_at":"2026-06-16T14:21:23Z","symbol":"NIM1079006","token_address":"0x788d7df00f11daea6d90003019ca0a1b84ea51da","type":"artist","uuid":"4724b69f-4200-42a7-934a-e319adb3183c"}
album: Š š š...
  type: MusicAlbum
  date published: 2007-10-31
album: Zmoklý sen (Nahrávky z let 1962-1968)
  type: MusicAlbum
  date published: 2012-05-31
album: Zmoklý Sen-Nahrávky Z Let 1962-1968
  type: MusicAlbum
  date published: 2012-05-31
album: Větrný Sen (Nahrávky Z Let 1969-1971)
  type: MusicAlbum
  date published: 2012-05-31
album: Nejvýznamnější skladatelé české populární hudby Bohuslav Ondráček 1 (1963 - 1968)
  type: MusicAlbum
  date published: 2012-06-27
album: Š Š Š...
  type: MusicAlbum
  date published: 2015-01-22
  track: Š - Š - Š
    type: MusicRecording
    duration: PT2M38S
    duration ms: 158600
    explicit: false
    by artist: Helena Blehárová
    in album: Š Š Š...
      type: MusicAlbum
      date published: 2015-01-22
    isrc code: CZA166700017
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-18T04:13:13+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x492c4e4aa8b2f8c6b8ec08b55a023373b54b0291512cd29a8e851cc04d22cfbd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956302
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956302
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166700017
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:30:09Z
    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 0x492c4e4aa8b2f8c6b8ec08b55a023373b54b0291512cd29a8e851cc04d22cfbd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CZA166700017.
      date published: 2026-07-02T03:30:09Z
    audio: Š - Š - Š
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.422
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.708
      additional property: Energy
        type: PropertyValue
        value: 0.368
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.781
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.141
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.599
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.223
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Tak Dávno
    type: MusicRecording
    duration: PT2M9S
    duration ms: 129759
    explicit: false
    by artist: Helena Blehárová
    in album: Š Š Š...
      type: MusicAlbum
      date published: 2015-01-22
    isrc code: CZA166800664
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T01:45:25+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x324102ece2e750c2bbc542f63348f4cd12ad0ebba1fe3227c79f71a6091ab618
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957118
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957118
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA166800664
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:20:19Z
    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 0x324102ece2e750c2bbc542f63348f4cd12ad0ebba1fe3227c79f71a6091ab618. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA166800664.
      date published: 2026-07-08T03:20:19Z
    audio: Tak Dávno
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.031
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.663
      additional property: Energy
        type: PropertyValue
        value: 0.321
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Večer Na Rejdě
album: Jazzové útesy

Acousticness
type: PropertyValue
value: 0.714

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.302

Valence (Positivity)
type: PropertyValue
value: 0.657

Loudness (dB)
type: PropertyValue
value: -13.01

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Večer Na Rejdě
type: MusicAlbum
date published: 2015-06-28

Jazzové útesy
type: MusicAlbum
date published: 2023-10-27