Felix Slováček
type: MusicGroup
description: Felix Slováček (born 23 May 1943) is a Czech clarinetist, conductor, film composer, and saxophonist. He is married to the actress Dagmar Patrasová. Life In his youth he studied Piano and Violin, bu
popularity: 16
followers: 835
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x01bca3cfc5bb8ca14060ff395f663732cf727d3305e0cbf9ff4b3f616b7cc98e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953710
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953710
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f8b0acc-e292-4fcd-8b05-8ae5248ff64e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f8b0acc-e292-4fcd-8b05-8ae5248ff64e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f8b0acc-e292-4fcd-8b05-8ae5248ff64e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T23:32:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x01bca3cfc5bb8ca14060ff395f663732cf727d3305e0cbf9ff4b3f616b7cc98e","name":"Felix Slováček","registered_at":"2026-06-14T17:53:59Z","symbol":"NIM0530667","token_address":"0xad99bfe5c2fa843b8243d0ca069ed118f40d821c","type":"artist","uuid":"7f8b0acc-e292-4fcd-8b05-8ae5248ff64e"}
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 0x01bca3cfc5bb8ca14060ff395f663732cf727d3305e0cbf9ff4b3f616b7cc98e. Chain 2 (Bitcoin): anchored in block 953710 (2026-06-14T23:32:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f8b0acc-e292-4fcd-8b05-8ae5248ff64e.json and https://artists.proofprofile.net/proofs/artist/7f8b0acc-e292-4fcd-8b05-8ae5248ff64e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T23:32:42Z
  text: {"copyright_id":"0x01bca3cfc5bb8ca14060ff395f663732cf727d3305e0cbf9ff4b3f616b7cc98e","name":"Felix Slováček","registered_at":"2026-06-14T17:53:59Z","symbol":"NIM0530667","token_address":"0xad99bfe5c2fa843b8243d0ca069ed118f40d821c","type":"artist","uuid":"7f8b0acc-e292-4fcd-8b05-8ae5248ff64e"}
album: Felix Slováček
  type: MusicAlbum
  date published: 1974
album: České Filmové Melodie
  type: MusicAlbum
  date published: 1975
  track: Kdepak, Ty Ptáčku, Hnízdo Máš?
    type: MusicRecording
    duration: PT2M55S
    duration ms: 175413
    explicit: false
    by artist: Felix Slováček
    in album: České Filmové Melodie
      type: MusicAlbum
      date published: 1975
    isrc code: CZA167500064
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T11:41:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2d681dbaa503e4e3e777c6ef17fe656f1f277f7eac995639fb4c65117a3cdbfc
    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/CZA167500064
    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 0x2d681dbaa503e4e3e777c6ef17fe656f1f277f7eac995639fb4c65117a3cdbfc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167500064.
      date published: 2026-07-05T01:12:41Z
    audio: Kdepak, Ty Ptáčku, Hnízdo Máš?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 131.683
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.34
      additional property: Energy
        type: PropertyValue
        value: 0.333
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.858
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.866
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.448
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.842
      additional property: Key Name
        type: PropertyValue
        value: Eb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Felix Slováček III.
  type: MusicAlbum
  date published: 1976
  track: Tornero
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187933
    explicit: false
    by artist: Felix Slováček
    in album: Felix Slováček III.
      type: MusicAlbum
      date published: 1976
    isrc code: CZA167600193
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T18:44:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x95bc5d90865d27e714c3fc10d1aad161025df8786e2dcc9a81b4a9a325581fd5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959047
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959047
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167600193
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T19:17:28Z
    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 0x95bc5d90865d27e714c3fc10d1aad161025df8786e2dcc9a81b4a9a325581fd5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/CZA167600193.
      date published: 2026-07-21T19:17:28Z
    audio: Tornero
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.924
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.363
      additional property: Energy
        type: PropertyValue
        value: 0.597
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.344
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.906
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Felix Slováček IV.
album: Felix Slováček 5
album: Trochu Klidu
album: The Velvet Sound Of Felix Slováček
album: Fascinující Rytmus
album: Nekonečná láska
album: Tancuj, Tancuj
album: For Lovers...
album: 20× A Dvě Navíc
album: Made In Czecho Slováček
album: The Velvet Sound of Felix Slováček
album: Trochu klidu
album: Nádherná láska
album: Beethoven, Škroup: Trios for Piano, Clarinet and Cello
track: Vorařská - My Pluli Dál
track: Včelka Mája

Liveness
type: PropertyValue
value: 0.21

Valence (Positivity)
type: PropertyValue
value: 0.206

Loudness (dB)
type: PropertyValue
value: -6.064

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Felix Slováček IV.
type: MusicAlbum
date published: 1978

Felix Slováček 5
type: MusicAlbum
date published: 1980

Trochu Klidu
type: MusicAlbum
date published: 1982

The Velvet Sound Of Felix Slováček
type: MusicAlbum
date published: 1982

Fascinující Rytmus
type: MusicAlbum
date published: 1984

Nekonečná láska
type: MusicAlbum
date published: 1985

Tancuj, Tancuj
type: MusicAlbum
date published: 1986

For Lovers...
type: MusicAlbum
date published: 1993-01-01
track: Tenkrát Na Západě
  type: MusicRecording
  duration: PT3M47S
  duration ms: 227173
  explicit: false
  by artist: Felix Slováček
  in album: For Lovers...
    type: MusicAlbum
    date published: 1993-01-01
  isrc code: CZD949300044
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T06:45:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7e710cb261a6b51981316a0dbf3013f683ba8e7bff627688e78d426645baa6d3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956634
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956634
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD949300044
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-04T10:04:33Z
  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 0x7e710cb261a6b51981316a0dbf3013f683ba8e7bff627688e78d426645baa6d3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CZD949300044.
    date published: 2026-07-04T10:04:33Z
  audio: Tenkrát Na Západě
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.478
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.233
    additional property: Energy
      type: PropertyValue
      value: 0.297
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.763
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.871
    additional property: Liveness
      type: PropertyValue
      value: 0.052
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.049
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.754
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

20× A Dvě Navíc
type: MusicAlbum
date published: 1997-01-01

Made In Czecho Slováček
type: MusicAlbum
date published: 2008-05-16

The Velvet Sound of Felix Slováček
type: MusicAlbum
date published: 2013-05-23

Trochu klidu
type: MusicAlbum
date published: 2014-07-15

Felix Slováček III.
type: MusicAlbum
date published: 2018-01-19

Nádherná láska
type: MusicAlbum
date published: 2021-02-15
track: Zdivočelá země
  type: MusicRecording
  duration: PT3M28S
  duration ms: 208613
  explicit: false
  by artist: Felix Slováček
  in album: Nádherná láska
    type: MusicAlbum
    date published: 2021-02-15
  isrc code: CZ1522200005
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T12:58:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf3adacf698c0ce076987742102ec3eb538d5a46e7fd746ef42289d61f8ca5ca7
  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/CZ1522200005
  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 0xf3adacf698c0ce076987742102ec3eb538d5a46e7fd746ef42289d61f8ca5ca7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZ1522200005.
    date published: 2026-07-05T01:12:41Z
  audio: Zdivočelá země
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 77.912
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.242
    additional property: Energy
      type: PropertyValue
      value: 0.329
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.732
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.78
    additional property: Liveness
      type: PropertyValue
      value: 0.322
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.073
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.497
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Major

Beethoven, Škroup: Trios for Piano, Clarinet and Cello
type: MusicAlbum
date published: 2024-12-27

Vorařská - My Pluli Dál
type: MusicRecording
duration: PT3M52S
duration ms: 232533
explicit: false
by artist: Felix Slováček
by artist: Ladislav Štaidl
by artist: Ladislav Štaidl se svým orchestrem
in album: Už Z Hor Zní Zvon
  type: MusicAlbum
  date published: 2006-11-10
popularity: 1
isrc code: CZA167400086
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T10:54:12+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3392a02d6a43ef5e8a9a935a35b431251dc543629fb81d4e098ffe67f79112e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA167400086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
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 0x3392a02d6a43ef5e8a9a935a35b431251dc543629fb81d4e098ffe67f79112e8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CZA167400086.
  date published: 2026-07-31T12:24:41Z
audio: Vorařská - My Pluli Dál
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.284
  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: 0.094
  additional property: Energy
    type: PropertyValue
    value: 0.385
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.675
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.873
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.272
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.667
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Včelka Mája
type: MusicRecording
duration: PT1M19S
duration ms: 79040
explicit: false
by artist: Felix Slováček
by artist: Felix Slovacek
in album: Nechte zvony znít
  type: MusicAlbum
  date published: 2012-12-07
isrc code: CZA239800961
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T06:08:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3aff2037cfb707fb14b86bca4ba77ee8018786a5297549f4a7bab7ba4d0fcca2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960216
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960216
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA239800961
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T06:39:12Z
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 0x3aff2037cfb707fb14b86bca4ba77ee8018786a5297549f4a7bab7ba4d0fcca2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CZA239800961.
  date published: 2026-07-30T06:39:12Z
audio: Včelka Mája
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.207
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.527
  additional property: Energy
    type: PropertyValue
    value: 0.604
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.296
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.009
  additional property: Liveness
    type: PropertyValue
    value: 0.211
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.74
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.628
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major