Janos Tandari
type: MusicGroup
genre: opera
popularity: 13
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa890624c6f8e1162fa95209ec1f74b85e21405ebcfc36215280d809ef5d73dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f3d686c-c8f0-4f5b-8b13-57e43381e46b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5f3d686c-c8f0-4f5b-8b13-57e43381e46b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5f3d686c-c8f0-4f5b-8b13-57e43381e46b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfa890624c6f8e1162fa95209ec1f74b85e21405ebcfc36215280d809ef5d73dc","name":"Janos Tandari","registered_at":"2026-06-14T14:24:49Z","symbol":"NIM0480787","token_address":"0x403f34e2e9104c897088b726f839cd834696e42c","type":"artist","uuid":"5f3d686c-c8f0-4f5b-8b13-57e43381e46b"}
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 0xfa890624c6f8e1162fa95209ec1f74b85e21405ebcfc36215280d809ef5d73dc. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f3d686c-c8f0-4f5b-8b13-57e43381e46b.json and https://artists.proofprofile.net/proofs/artist/5f3d686c-c8f0-4f5b-8b13-57e43381e46b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T22:00:24Z
  text: {"copyright_id":"0xfa890624c6f8e1162fa95209ec1f74b85e21405ebcfc36215280d809ef5d73dc","name":"Janos Tandari","registered_at":"2026-06-14T14:24:49Z","symbol":"NIM0480787","token_address":"0x403f34e2e9104c897088b726f839cd834696e42c","type":"artist","uuid":"5f3d686c-c8f0-4f5b-8b13-57e43381e46b"}
track: Il trovatore: Act II: Vedi, le fosche notturne
  type: MusicRecording
  duration: PT2M49S
  duration ms: 169560
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Zsuzsa Csonka
  by artist: Franco de Grandis
  by artist: Maurizio Frusoni
  by artist: Daniela Longhi
  by artist: Jozsef Mukk
  by artist: Sandor Pasztor
  by artist: Roberto Servile
  by artist: Janos Tandari
  by artist: Irina Tchistjakova
  by artist: Budapest Festival Chorus
  by artist: Hungarian State Opera Orchestra
  by artist: Will Humburg
  in album: Verdi: Trovatore (Il)
    type: MusicAlbum
    date published: 1995-10-10
  popularity: 17
  genre: classical
  genre: opera
  isrc code: HKI199591111
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T18:51:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa8078c87e35a25fab720fbc90827228a7d4471832e80c824f694568b44e57d9c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953536
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953536
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199591111
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T17:25:41Z
  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 0xa8078c87e35a25fab720fbc90827228a7d4471832e80c824f694568b44e57d9c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199591111.
    date published: 2026-06-13T17:25:41Z
  audio: Il trovatore: Act II: Vedi, le fosche notturne
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.303
    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: 0.435
    additional property: Energy
      type: PropertyValue
      value: 0.218
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.913
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.004
    additional property: Liveness
      type: PropertyValue
      value: 0.659
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.272
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.418
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Il trovatore: Act I: Di tale amor che dirsi
track: Il trovatore: Act II: Vedi, le fosche notturne
  type: MusicRecording
  duration: PT2M49S
  duration ms: 169560
  explicit: false
  by artist: Giuseppe Verdi
  by artist: Zsuzsa Csonka
  by artist: Franco de Grandis
  by artist: Maurizio Frusoni
  by artist: Daniela Longhi
  by artist: Jozsef Mukk
  by artist: Sandor Pasztor
  by artist: Roberto Servile
  by artist: Janos Tandari
  by artist: Irina Tchistjakova
  by artist: Budapest Festival Chorus
  by artist: Hungarian State Opera Orchestra
  by artist: Will Humburg
  in album: Verdi: Trovatore (Il)
    type: MusicAlbum
    date published: 1995-10-10
  genre: classical
  genre: opera
  isrc code: HKI199591111
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-10T18:51:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa8078c87e35a25fab720fbc90827228a7d4471832e80c824f694568b44e57d9c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199591111
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0xa8078c87e35a25fab720fbc90827228a7d4471832e80c824f694568b44e57d9c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI199591111.
    date published: 2026-07-08T08:56:20Z
  audio: Il trovatore: Act II: Vedi, le fosche notturne
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.303
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
    additional property: Time Signature
    additional property: Danceability
    additional property: Energy
    additional property: Speechiness
    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

Il trovatore: Act I: Di tale amor che dirsi
type: MusicRecording
duration: PT2M26S
duration ms: 146520
explicit: false
by artist: Giuseppe Verdi
by artist: Zsuzsa Csonka
by artist: Franco de Grandis
by artist: Maurizio Frusoni
by artist: Daniela Longhi
by artist: Jozsef Mukk
by artist: Sandor Pasztor
by artist: Roberto Servile
by artist: Janos Tandari
by artist: Irina Tchistjakova
by artist: Budapest Festival Chorus
by artist: Hungarian State Opera Orchestra
by artist: Will Humburg
in album: Verdi: Trovatore (Il)
  type: MusicAlbum
  date published: 1995-10-10
genre: classical
genre: opera
isrc code: HKI199591106
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T07:52:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x68cddc7e51daf4d2d162b1673418a0b462d5fa3aa6da737640181e0181373903
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953528
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953528
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199591106
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T15:41:10Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953528
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T15:41:10+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cddc7e51daf4d2d162b1673418a0b462d5fa3aa6da737640181e0181373903. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI199591106.
  date published: 2026-06-13T15:41:10Z
audio: Il trovatore: Act I: Di tale amor che dirsi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.797
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.494
  additional property: Energy
    type: PropertyValue
    value: 0.217
  additional property: Speechiness
    type: PropertyValue
    value: 0.151
  additional property: Acousticness
    type: PropertyValue
    value: 0.939
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.01
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.293
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.518
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.435

Energy
type: PropertyValue
value: 0.218

Speechiness
type: PropertyValue
value: 0.05

Acousticness
type: PropertyValue
value: 0.913

Instrumentalness
type: PropertyValue
value: 0.004

Liveness
type: PropertyValue
value: 0.659

Valence (Positivity)
type: PropertyValue
value: 0.272

Loudness (dB)
type: PropertyValue
value: -19.418

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major