Marty Holoubek
type: MusicGroup
popularity: 19
followers: 1439
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xff36c42bdc5384983003e9626f2260c032264f058be8c3c08a45de4e5daa8aef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953721
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953721
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a90e8ae-3e34-4b17-9107-a70d637a17a2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8a90e8ae-3e34-4b17-9107-a70d637a17a2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8a90e8ae-3e34-4b17-9107-a70d637a17a2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:12:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xff36c42bdc5384983003e9626f2260c032264f058be8c3c08a45de4e5daa8aef","name":"Marty Holoubek","registered_at":"2026-06-14T19:05:15Z","symbol":"NIM0547664","token_address":"0xe79d3bf23f65cf7192e1c87b3c179d0ede9dab00","type":"artist","uuid":"8a90e8ae-3e34-4b17-9107-a70d637a17a2"}
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 0xff36c42bdc5384983003e9626f2260c032264f058be8c3c08a45de4e5daa8aef. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a90e8ae-3e34-4b17-9107-a70d637a17a2.json and https://artists.proofprofile.net/proofs/artist/8a90e8ae-3e34-4b17-9107-a70d637a17a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:12:01Z
  text: {"copyright_id":"0xff36c42bdc5384983003e9626f2260c032264f058be8c3c08a45de4e5daa8aef","name":"Marty Holoubek","registered_at":"2026-06-14T19:05:15Z","symbol":"NIM0547664","token_address":"0xe79d3bf23f65cf7192e1c87b3c179d0ede9dab00","type":"artist","uuid":"8a90e8ae-3e34-4b17-9107-a70d637a17a2"}
album: Songbook6
  type: MusicAlbum
  date published: 2023-03-08
  track: あちらの空は晴れ
    type: MusicRecording
    duration: PT5M9S
    duration ms: 309967
    explicit: false
    by artist: Shun Ishiwaka
    by artist: 角銅真実
    by artist: 西田修大
    by artist: Marty Holoubek
    in album: Songbook6
      type: MusicAlbum
      date published: 2023-03-08
    isrc code: JPS801962704
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-25T08:51:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x70582c860e8be059cf3a1d422fa1b7fc048fc10e8a77c856f1f15f762cdeb9e2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801962704
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x70582c860e8be059cf3a1d422fa1b7fc048fc10e8a77c856f1f15f762cdeb9e2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPS801962704.
      date published: 2026-07-02T03:55:08Z
    audio: あちらの空は晴れ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 140.453
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.716
      additional property: Energy
        type: PropertyValue
        value: 0.603
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.695
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.635
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.648
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.684
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Natsu Wa Mijikai
    type: MusicRecording
    duration: PT3M25S
    duration ms: 205650
    explicit: false
    by artist: Shun Ishiwaka
    by artist: 角銅真実
    by artist: 市野元彦
    by artist: 西田修大
    by artist: Marty Holoubek
    in album: Songbook6
      type: MusicAlbum
      date published: 2023-03-08
    isrc code: JPS801962706
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-25T08:51:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x8fd7d736e25ec1da2bf13b1e95e35af6a3491a2609b6869170277da91f25ff57
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801962706
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x8fd7d736e25ec1da2bf13b1e95e35af6a3491a2609b6869170277da91f25ff57. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPS801962706.
      date published: 2026-07-02T03:55:08Z
    audio: Natsu Wa Mijikai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.83
      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: 0.688
      additional property: Energy
        type: PropertyValue
        value: 0.504
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.788
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.462
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: Pentatonic 物語
  track: 空に逢う、朝を待つ
album: Trio II: 2
album: Campfire
album: Uncle Izu
album: Song for the Sun
album: Trio III (Radio Edits)
album: Trio Ⅱ
album: Trio I
album: Shizuru
album: Trio III
album: Songbook5
album: My Trio Album
album: You
album: Natsu Wa Mijikai
album: The First Proxy
album: A Farewell to Nostalgia
album: Live at Uptown
album: Quatre saisons
album: Today Will Be Another Day
album: Monash Sessions: Kenny Werner
album: The Tokyo Sessions Volume 2: Twist
album: Spirit of "Days of Delight" vol.3

Liveness
type: PropertyValue
value: 0.211

Valence (Positivity)
type: PropertyValue
value: 0.445

Loudness (dB)
type: PropertyValue
value: -14.432

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Major

Pentatonic 物語
type: MusicRecording
duration: PT3M4S
duration ms: 184224
explicit: false
by artist: Shun Ishiwaka
by artist: 細井徳太郎
by artist: ermhoi
by artist: 高木大丈夫
by artist: Marty Holoubek
in album: Songbook6
  type: MusicAlbum
  date published: 2023-03-08
isrc code: JPS801962708
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T03:32:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8e429488127bd09606e0f1a23e24ac63f4373f362f93cfc1e51e8f73c587235
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801962708
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e429488127bd09606e0f1a23e24ac63f4373f362f93cfc1e51e8f73c587235. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801962708.
  date published: 2026-07-02T03:30:09Z
audio: Pentatonic 物語
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.812
  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: 0.617
  additional property: Energy
    type: PropertyValue
    value: 0.607
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.775
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.841
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.693
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.603
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

空に逢う、朝を待つ
type: MusicRecording
duration: PT3M16S
duration ms: 196363
explicit: false
by artist: Shun Ishiwaka
by artist: 櫻/Ying
by artist: 苗代尚寛
by artist: Marty Holoubek
in album: Songbook6
  type: MusicAlbum
  date published: 2023-03-08
isrc code: JPS801962709
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:17:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdb9edfdf4db4468da894014761e344d7733237386a88e81224ed32eb03b5efb6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957819
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957819
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801962709
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-13T07:53:33Z
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 0xdb9edfdf4db4468da894014761e344d7733237386a88e81224ed32eb03b5efb6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPS801962709.
  date published: 2026-07-13T07:53:33Z
audio: 空に逢う、朝を待つ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.964
  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: 0.525
  additional property: Energy
    type: PropertyValue
    value: 0.441
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.873
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.472
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.379
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.283
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Trio II: 2
type: MusicAlbum
date published: 2024-07-31

Campfire
type: MusicAlbum
date published: 2024-07-17

Uncle Izu
type: MusicAlbum
date published: 2024-06-26

Song for the Sun
type: MusicAlbum
date published: 2022-07-21

Trio III (Radio Edits)
type: MusicAlbum
date published: 2022-06-15

Trio Ⅱ
type: MusicAlbum
date published: 2022-04-06

Trio I
type: MusicAlbum
date published: 2020-03-13

Shizuru
type: MusicAlbum
date published: 2024-05-29

Trio III
type: MusicAlbum
date published: 2022-06-15

Songbook5
type: MusicAlbum
date published: 2020-10-21
track: Natsuyasumi
  type: MusicRecording
  duration: PT2M20S
  duration ms: 140426
  explicit: false
  by artist: Shun Ishiwaka
  by artist: 角銅真実
  by artist: 西田修大
  by artist: Marty Holoubek
  by artist: 佐藤芳恵
  in album: Songbook5
    type: MusicAlbum
    date published: 2020-10-21
  isrc code: JPS801945888
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T14:25:07+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x27b8d91b0f70dc529cd27e9ef8f761a232e4c70d5245fd202bae75f92e3af035
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959144
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959144
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801945888
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T17:26:42Z
  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 0x27b8d91b0f70dc529cd27e9ef8f761a232e4c70d5245fd202bae75f92e3af035. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:26:42Z), 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/JPS801945888.
    date published: 2026-07-22T17:26:42Z
  audio: Natsuyasumi
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.381
    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: 0.344
    additional property: Energy
      type: PropertyValue
      value: 0.686
    additional property: Speechiness
      type: PropertyValue
      value: 0.031
    additional property: Acousticness
      type: PropertyValue
      value: 0.761
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.392
    additional property: Liveness
      type: PropertyValue
      value: 0.14
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.573
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.531
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Messe Basse 1:B-dur
  type: MusicRecording
  duration: PT4M29S
  duration ms: 269533
  explicit: false
  by artist: Shun Ishiwaka
  by artist: 角銅真実
  by artist: 西田修大
  by artist: Marty Holoubek
  by artist: Niran Dasika
  by artist: 佐藤芳恵
  in album: Songbook5
    type: MusicAlbum
    date published: 2020-10-21
  isrc code: JPS801945889
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T15:16:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd43a1bc2ee34b3eac4def9b4ffb178ed4e5556738648bd3e24383ff329c6964a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959144
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959144
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPS801945889
  additional property: OTSTimestamp
    type: PropertyValue
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43a1bc2ee34b3eac4def9b4ffb178ed4e5556738648bd3e24383ff329c6964a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPS801945889.
    date published: 2026-07-22T15:38:35Z
  audio: Messe Basse 1:B-dur
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type: MusicAlbum
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type: MusicAlbum
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