Anna Hlavenkova
type: MusicGroup
popularity: 5
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9dd4852386179c28346585b67d9ccedbc87063250f49e0bbf6fbd6983f2798cb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41e5605a-50d9-4068-be82-c8b958489f7a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/41e5605a-50d9-4068-be82-c8b958489f7a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/41e5605a-50d9-4068-be82-c8b958489f7a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x9dd4852386179c28346585b67d9ccedbc87063250f49e0bbf6fbd6983f2798cb. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41e5605a-50d9-4068-be82-c8b958489f7a.json and https://artists.proofprofile.net/proofs/artist/41e5605a-50d9-4068-be82-c8b958489f7a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
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album: Johann Joseph Rösler: Lieder
  type: MusicAlbum
  date published: 2024-03-01
album: Zelenka: Melodrama de Sancto Wenceslao. Music from 18th Century Prague
  type: MusicAlbum
  date published: 2012-09-07
  track: Sub olea pacis, ZWV 175: Symphonia. Allegro. assai
    type: MusicRecording
    duration: PT5M55S
    duration ms: 355133
    explicit: false
    by artist: Jan Dismas Zelenka
    by artist: Ensemble PhilidOr
    by artist: Musica Florea
    by artist: Musica Aeterna
    by artist: Marek Stryncl
    in album: Zelenka: Melodrama de Sancto Wenceslao. Music from 18th Century Prague
      type: MusicAlbum
      date published: 2012-09-07
    popularity: 3
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T22:55:32+00:00
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      type: PropertyValue
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      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/CZA160101013
    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 0xafe606018002999b917985d1491f2f5c264b9a46fe3836028c3e5f0cc72c38b1. 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/CZA160101013.
      date published: 2026-07-08T03:20:19Z
    audio: Sub olea pacis, ZWV 175: Symphonia. Allegro. assai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.466
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.416
      additional property: Energy
        type: PropertyValue
        value: 0.234
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.925
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.864
      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
        type: PropertyValue
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      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
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  track: Sub olea pacis, Act II, ZWV 175: Aria. Allegro. Angelicae mentes
    type: MusicRecording
    duration: PT4M54S
    duration ms: 294786
    explicit: false
    by artist: Jan Dismas Zelenka
    by artist: Adam Zdunikowski
    by artist: Ensemble PhilidOr
    by artist: Musica Florea
    by artist: Musica Aeterna
    by artist: Marek Stryncl
    in album: Zelenka: Melodrama de Sancto Wenceslao. Music from 18th Century Prague
      type: MusicAlbum
      date published: 2012-09-07
    popularity: 0
    isrc code: CZA160120013
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T14:31:05+00:00
    additional property: CopyrightChainExplorerURL
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    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960418
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA160120013
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T15:20:15Z
    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 0x6f57bb0e4c3168a41263bd60b151af4c9f3600f2064c4f06554e95907389aa1d. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZA160120013.
      date published: 2026-07-31T15:20:15Z
    audio: Sub olea pacis, Act II, ZWV 175: Aria. Allegro. Angelicae mentes
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 122.434
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.59
      additional property: Energy
        type: PropertyValue
        value: 0.162
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
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album: Dukát: Cithara nova 1707
album: Zelenka: Sub olea pacis et palma virtutis
album: Fischer: Sacred Music
album: Ryba: Česká mše vánoční
album: A. V. Michna z Otradovic: Vánoční hudba - výběr z kancionálů
album: Dell' Amore e Dela Morte / O lásce a smrti
album: Czech Folk Songs
album: Zelenka: Requiem and Miserere (Ensemble Baroque 1994)
album: Moravské Dvojzpěvy (Moravian Duets)
album: A. V. Michna Z Otradovic: Christmas Music

Acousticness
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value: 0.895

Instrumentalness
type: PropertyValue
value: 0.001

Liveness
type: PropertyValue
value: 0.158

Valence (Positivity)
type: PropertyValue
value: 0.426

Loudness (dB)
type: PropertyValue
value: -22.896

Key Name
type: PropertyValue
value: C#

Mode Name
type: PropertyValue
value: Major

Dukát: Cithara nova 1707
type: MusicAlbum
date published: 2000-06-20

Zelenka: Sub olea pacis et palma virtutis
type: MusicAlbum
date published: 2001-05-28
track: Sub olea pacis et palma virtutis conspicua orbi regia Bohemiae Corona, ZWV 175: No. 1, Symphonia. Allegro assai
  type: MusicRecording
  duration: PT5M55S
  duration ms: 355133
  explicit: false
  by artist: Jan Dismas Zelenka
  by artist: Ensemble PhilidOr
  by artist: Musica Florea
  by artist: musicAeterna
  by artist: Marek Stryncl
  in album: Zelenka: Sub olea pacis et palma virtutis
    type: MusicAlbum
    date published: 2001-05-28
  isrc code: CZA160101013
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:55:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xafe606018002999b917985d1491f2f5c264b9a46fe3836028c3e5f0cc72c38b1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  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/CZA160101013
  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 0xafe606018002999b917985d1491f2f5c264b9a46fe3836028c3e5f0cc72c38b1. 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/CZA160101013.
    date published: 2026-07-08T03:20:19Z
  audio: Sub olea pacis et palma virtutis conspicua orbi regia Bohemiae Corona, ZWV 175: No. 1, Symphonia. Allegro assai
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 139.466
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.416
    additional property: Energy
      type: PropertyValue
      value: 0.234
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.925
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.864
    additional property: Liveness
      type: PropertyValue
      value: 0.071
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.381
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.192
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

Fischer: Sacred Music
type: MusicAlbum
date published: 2001-09-20

Ryba: Česká mše vánoční
type: MusicAlbum
date published: 2012-09-01

A. V. Michna z Otradovic: Vánoční hudba - výběr z kancionálů
type: MusicAlbum
date published: 2014-01-01
track: Vánoční hospoda (Z kancionálu Česká mariánská muzika)
  type: MusicRecording
  duration: PT1M52S
  duration ms: 112938
  explicit: false
  by artist: Adam Václav Michna z Otradovic
  by artist: Jihočeská Filharmonie
  by artist: Anna Hlavenkova
  by artist: Edita Adlerová
  by artist: Karel Jakubů
  in album: A. V. Michna z Otradovic: Vánoční hudba - výběr z kancionálů
    type: MusicAlbum
    date published: 2014-01-01
  genre: bohemian-baroque
  isrc code: CZD941865456
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T19:01:55+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3469f65a48f1eb9e012d79849312982967ce9d22224fa0d88bef5e5436f47918
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960455
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960455
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD941865456
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T19:53:13Z
  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 0x3469f65a48f1eb9e012d79849312982967ce9d22224fa0d88bef5e5436f47918. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CZD941865456.
    date published: 2026-07-31T19:53:13Z
  audio: Vánoční hospoda (Z kancionálu Česká mariánská muzika)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 113.645
    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: 0.173
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.974
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.747
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.267
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.706
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Vánoční roztomilost (Z kancionálu Česká mariánská muzika)
  type: MusicRecording
  duration: PT1M21S
  duration ms: 81212
  explicit: false
  by artist: Adam Václav Michna z Otradovic
  by artist: Jihočeská Filharmonie
  by artist: Anna Hlavenkova
  by artist: Edita Adlerová
  by artist: Karel Jakubů
  in album: A. V. Michna z Otradovic: Vánoční hudba - výběr z kancionálů
    type: MusicAlbum
    date published: 2014-01-01
  genre: bohemian-baroque
  isrc code: CZD941865459
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T13:40:33+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xce9e730c7dc463c268baca85b51b223d5ee7a494649c15e720f7b519ad9c058a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960418
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960418
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZD941865459
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:20:15Z
  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 0xce9e730c7dc463c268baca85b51b223d5ee7a494649c15e720f7b519ad9c058a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CZD941865459.
    date published: 2026-07-31T15:20:15Z
  audio: Vánoční roztomilost (Z kancionálu Česká mariánská muzika)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 154.495
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.278
    additional property: Energy
      type: PropertyValue
      value: 0.029
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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Dell' Amore e Dela Morte / O lásce a smrti
type: MusicAlbum
date published: 2007-01-01

Czech Folk Songs
type: MusicAlbum
date published: 2010-03-26
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track: Czech Folk Songs: Spring Is Arriving - Come, Boy /Songs of Youth and Virginity - Youth, Beauty, Joy/ (II., Page 83+319)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T17:41:38Z
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subject of: OpenTimestamps Proof of Existence
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CZA169501242
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T13:06:57Z
  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 0xdfa1c2b05f8663150814b13d13cec5d17adae9ba6e8e81be730723a672543a2a. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/CZA169501242.
    date published: 2026-07-31T13:06:57Z
  audio: Requiem in D Minor, ZWV 48: I. Introitus & II. Kyrie
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.567
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.127
    additional property: Energy
      type: PropertyValue
      value: 0.153
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.984
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.327
    additional property: Liveness
      type: PropertyValue
      value: 0.096
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.062
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.922
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Miserere in C Minor, ZWV 57 (Psalm 50)
  type: MusicRecording
  duration: PT13M23S
  duration ms: 803840
  explicit: false
  by artist: Jan Dismas Zelenka
  by artist: Ensemble Baroque 1994
  by artist: Czech Chamber Choir
  by artist: Roman Valek
  by artist: Anna Hlavenkova
  in album: Zelenka: Requiem and Miserere (Ensemble Baroque 1994)
    type: MusicAlbum
    date published: 1995-01-01
  isrc code: CZA169500243
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T03:19:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x54d4d295cc5295597fc8d890d606f8efafff46c0455054ea49f6890233531bf5
  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/CZA169500243
  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 0x54d4d295cc5295597fc8d890d606f8efafff46c0455054ea49f6890233531bf5. 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/CZA169500243.
    date published: 2026-07-08T03:20:19Z
  audio: Miserere in C Minor, ZWV 57 (Psalm 50)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 127.133
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.266
    additional property: Energy
      type: PropertyValue
      value: 0.156
    additional property: Speechiness
      type: PropertyValue
      value: 0.036
    additional property: Acousticness
      type: PropertyValue
      value: 0.98
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.311
    additional property: Liveness
      type: PropertyValue
      value: 0.127
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.145
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.611
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Major

Moravské Dvojzpěvy (Moravian Duets)
type: MusicAlbum
date published: 2017-01-01
track: Moravske Dvojzpevy, Op. 32: No. 1, A Já Ti Uplynu
  type: MusicRecording
  duration: PT2M30S
  duration ms: 150946
  explicit: false
  by artist: Anna Hlavenkova
  by artist: Edita Adlerová
  by artist: Jihočeská Filharmonie
  by artist: Jaroslav Krcek
  in album: Moravské Dvojzpěvy (Moravian Duets)
    type: MusicAlbum
    date published: 2017-01-01
  isrc code: USCGJ1787656
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T21:34:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe43ea7930f9059d9cca6ee5ebbb7d3c6b7c9dd5fec3a03164398d9fb65322ca5
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960473
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960473
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1787656
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T22:27:44Z
  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 0xe43ea7930f9059d9cca6ee5ebbb7d3c6b7c9dd5fec3a03164398d9fb65322ca5. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USCGJ1787656.
    date published: 2026-07-31T22:27:44Z
  audio: Moravske Dvojzpevy, Op. 32: No. 1, A Já Ti Uplynu
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 115.485
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.358
    additional property: Energy
      type: PropertyValue
      value: 0.07
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.966
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.073
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.286
    additional property: Loudness (dB)
      type: PropertyValue
      value: -23.215
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Moravske Dvojzpevy, Op. 32: No. 3, Dyby Byla Kosa Nabróšená
  type: MusicRecording
  duration: PT1M12S
  duration ms: 72200
  explicit: false
  by artist: Anna Hlavenkova
  by artist: Edita Adlerová
  by artist: Jihočeská Filharmonie
  by artist: Jaroslav Krcek
  in album: Moravské Dvojzpěvy (Moravian Duets)
    type: MusicAlbum
    date published: 2017-01-01
  isrc code: USCGJ1787658
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T07:40:32+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe8124520b5af66073955413c0a39ff8aba4f610f706541f9d44edcf87bd2a962
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960368
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960368
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1787658
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T08:26:41Z
  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 0xe8124520b5af66073955413c0a39ff8aba4f610f706541f9d44edcf87bd2a962. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1787658.
    date published: 2026-07-31T08:26:41Z
  audio: Moravske Dvojzpevy, Op. 32: No. 3, Dyby Byla Kosa Nabróšená
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.053
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.499
    additional property: Energy
      type: PropertyValue
      value: 0.049
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.974
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.083
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.277
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.898
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Moravske Dvojzpevy, Op. 32: No. 4, V Dobrým Sme Se Sešli
  type: MusicRecording
  duration: PT1M7S
  duration ms: 67453
  explicit: false
  by artist: Anna Hlavenkova
  by artist: Edita Adlerová
  by artist: Jihočeská Filharmonie
  by artist: Jaroslav Krcek
  in album: Moravské Dvojzpěvy (Moravian Duets)
    type: MusicAlbum
    date published: 2017-01-01
  isrc code: USCGJ1787659
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T08:45:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9238d329b4ff95d9ff0bd8adae64e7b6780baedf704750f63957b7e17cb2baaa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Moravske Dvojzpevy, Op. 32: No. 4, V Dobrým Sme Se Sešli
track: Moravske Dvojzpevy, Op. 32: No. 5, Slavíkovský Polečko Malý
track: Moravske Dvojzpevy, Op. 32: No. 6, Holub Na Javoře
track: Moravske Dvojzpevy, Op. 32: No. 8, Skromná
track: Moravske Dvojzpevy, Op. 32: No. 11, Zajatá
track: Moravske Dvojzpevy, Op. 32: No. 13, Šípek

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960379

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960379

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1787659

OTSTimestamp
type: PropertyValue
value: 2026-07-31T09:25:34Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9238d329b4ff95d9ff0bd8adae64e7b6780baedf704750f63957b7e17cb2baaa. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USCGJ1787659.
date published: 2026-07-31T09:25:34Z

Moravske Dvojzpevy, Op. 32: No. 4, V Dobrým Sme Se Sešli
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 104.616
additional property: Musical Key
  type: PropertyValue
  value: 3
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.32
additional property: Energy
  type: PropertyValue
  value: 0.077
additional property: Speechiness
  type: PropertyValue
  value: 0.051
additional property: Acousticness
  type: PropertyValue
  value: 0.939
additional property: Instrumentalness
  type: PropertyValue
  value: 0.001
additional property: Liveness
  type: PropertyValue
  value: 0.104
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.265
additional property: Loudness (dB)
  type: PropertyValue
  value: -23.934
additional property: Key Name
  type: PropertyValue
  value: Eb
additional property: Mode Name
  type: PropertyValue
  value: Major

Moravske Dvojzpevy, Op. 32: No. 5, Slavíkovský Polečko Malý
type: MusicRecording
duration: PT1M24S
duration ms: 84866
explicit: false
by artist: Anna Hlavenkova
by artist: Edita Adlerová
by artist: Jihočeská Filharmonie
by artist: Jaroslav Krcek
in album: Moravské Dvojzpěvy (Moravian Duets)
  type: MusicAlbum
  date published: 2017-01-01
isrc code: USCGJ1787660
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T00:00:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x14a120f33c332f355100d1ac9bcb5c827be3100e349f13b34eab6a617bdf50f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960327
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960327
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1787660
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T00:26:26Z
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 0x14a120f33c332f355100d1ac9bcb5c827be3100e349f13b34eab6a617bdf50f3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ1787660.
  date published: 2026-07-31T00:26:26Z
audio: Moravske Dvojzpevy, Op. 32: No. 5, Slavíkovský Polečko Malý
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.877
  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: 0.586
  additional property: Energy
    type: PropertyValue
    value: 0.112
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.933
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.281
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.402
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.741
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Moravske Dvojzpevy, Op. 32: No. 6, Holub Na Javoře
type: MusicRecording
duration: PT1M54S
duration ms: 114626
explicit: false
by artist: Anna Hlavenkova
by artist: Edita Adlerová
by artist: Jihočeská Filharmonie
by artist: Jaroslav Krcek
in album: Moravské Dvojzpěvy (Moravian Duets)
  type: MusicAlbum
  date published: 2017-01-01
isrc code: USCGJ1787661
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:36:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4e8e2a73464fcd944a48aed097685f0cf727081f6ded66ae40d2216306dde09a
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/USCGJ1787661
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 0x4e8e2a73464fcd944a48aed097685f0cf727081f6ded66ae40d2216306dde09a. 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/USCGJ1787661.
  date published: 2026-07-31T12:24:41Z
audio: Moravske Dvojzpevy, Op. 32: No. 6, Holub Na Javoře
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Moravske Dvojzpevy, Op. 32: No. 8, Skromná
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by artist: Edita Adlerová
by artist: Jihočeská Filharmonie
by artist: Jaroslav Krcek
in album: Moravské Dvojzpěvy (Moravian Duets)
  type: MusicAlbum
  date published: 2017-01-01
isrc code: USCGJ1787663
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ1787663
additional property: OTSTimestamp
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07c2f03b319211fa399160ae17c3ec4243dfc3ebe52f604e1a7cf150249635. 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/USCGJ1787663.
  date published: 2026-07-08T03:20:19Z
audio: Moravske Dvojzpevy, Op. 32: No. 8, Skromná
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Moravske Dvojzpevy, Op. 32: No. 11, Zajatá
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duration: PT2M54S
duration ms: 174573
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by artist: Anna Hlavenkova
by artist: Edita Adlerová
by artist: Jihočeská Filharmonie
by artist: Jaroslav Krcek
in album: Moravské Dvojzpěvy (Moravian Duets)
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  date published: 2017-01-01
isrc code: USCGJ1787666
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c31467a76ffef0e5d84baeef29d9eac97ecba850195a1109a713cec63591a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1787666.
  date published: 2026-07-31T08:26:41Z
audio: Moravske Dvojzpevy, Op. 32: No. 11, Zajatá
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  additional property: Tempo (BPM)
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Moravske Dvojzpevy, Op. 32: No. 13, Šípek
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duration: PT2M54S
duration ms: 174960
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by artist: Anna Hlavenkova
by artist: Edita Adlerová
by artist: Jihočeská Filharmonie
by artist: Jaroslav Krcek
in album: Moravské Dvojzpěvy (Moravian Duets)
  type: MusicAlbum
  date published: 2017-01-01
isrc code: USCGJ1787668
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 0x44435ea370f7d45723512a9a73fe1e3b4ef33d260eed6f450149cfc32283dd5a. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USCGJ1787668.
  date published: 2026-07-30T19:42:40Z
audio: Moravske Dvojzpevy, Op. 32: No. 13, Šípek
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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A. V. Michna Z Otradovic: Christmas Music
type: MusicAlbum
date published: 2014-01-01