Marina Costa
type: MusicGroup
popularity: 22
followers: 1574
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7182eb4966cf24d2009926e00d8c729e72f7cc71f52bb03ebf86f4f004b86f4b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7182eb4966cf24d2009926e00d8c729e72f7cc71f52bb03ebf86f4f004b86f4b","name":"Marina Costa","registered_at":"2026-06-11T12:12:13Z","symbol":"NIM0024519","token_address":"0x60a366261b076ecc559ca723870a2a2ba766b7c9","type":"artist","uuid":"12099deb-75d6-47d0-a98d-ac3be4a935a4"}
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 0x7182eb4966cf24d2009926e00d8c729e72f7cc71f52bb03ebf86f4f004b86f4b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4.json and https://artists.proofprofile.net/proofs/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x7182eb4966cf24d2009926e00d8c729e72f7cc71f52bb03ebf86f4f004b86f4b","name":"Marina Costa","registered_at":"2026-06-11T12:12:13Z","symbol":"NIM0024519","token_address":"0x60a366261b076ecc559ca723870a2a2ba766b7c9","type":"artist","uuid":"12099deb-75d6-47d0-a98d-ac3be4a935a4"}
album: Music for Flute and Guitar
  type: MusicAlbum
  date published: 2020-12-14
album: Celtic Melodies for Guitar
  type: MusicAlbum
  date published: 2021-01-10
album: Brahms Lullaby for Guitar
  type: MusicAlbum
  date published: 2021-01-23
  track: Brahms Waltz No.15
    type: MusicRecording
    duration: PT1M56S
    duration ms: 116668
    explicit: false
    by artist: Marina Costa
    in album: Brahms Lullaby for Guitar
      type: MusicAlbum
      date published: 2021-01-23
    isrc code: QZFZ22193081
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T17:14:55+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb8e8fcb0bc23191f090b4d4f9111db1d20e02eced0dfd32cea200a9d66a5c42a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956826
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956826
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22193081
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T19:27:56Z
    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 0xb8e8fcb0bc23191f090b4d4f9111db1d20e02eced0dfd32cea200a9d66a5c42a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22193081 — a six-check JSON result.
      date published: 2026-07-05T19:27:56Z
    audio: Brahms Waltz No.15
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.976
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.563
      additional property: Energy
        type: PropertyValue
        value: 0.096
      additional property: Speechiness
        type: PropertyValue
        value: 0.073
      additional property: Acousticness
        type: PropertyValue
        value: 0.978
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.951
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.338
      additional property: Loudness (dB)
        type: PropertyValue
        value: -21.272
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Star Trek: Voyager Main Theme for Guitar (Television Series Soundtrack)
  type: MusicAlbum
  date published: 2021-02-08
album: Ave Maria for Guitar
  type: MusicAlbum
  date published: 2021-05-08
album: Auld Lang Syne
  type: MusicAlbum
  date published: 2021-07-14
album: Christmas Guitar
  type: MusicAlbum
  date published: 2021-11-14
album: In Dreams (from "The Lord of the Rings: The Fellowship of the Ring)
  type: MusicAlbum
  date published: 2022-02-26
  track: In Dreams (from "The Lord of the Rings: The Fellowship of the Ring)
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134559
    explicit: false
    by artist: Marina Costa
    in album: In Dreams (from "The Lord of the Rings: The Fellowship of the Ring)
      type: MusicAlbum
      date published: 2022-02-26
    isrc code: QZDA72259373
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T03:44:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7bd513d0829bbef6dc308a476b62e76c7f4a208f6b61e5455466ccfa2d5a84f0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72259373
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x7bd513d0829bbef6dc308a476b62e76c7f4a208f6b61e5455466ccfa2d5a84f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72259373 — a six-check JSON result.
      date published: 2026-07-06T06:56:49Z
    audio: In Dreams (from "The Lord of the Rings: The Fellowship of the Ring)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 75.929
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.795
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Air on the G String
album: Pachelbel´s Canon
album: Humoresque No. 7
album: Nothing Else Matters
album: Jingle Bells
album: Siciliano
album: Mad World (Instrumental Guitar)
album: Supermarket Flowers (Instrumental Guitar)
album: Skye Boat Song (Instrumental Guitar)
album: Reverie (Instrumental Guitar)
album: What Was I Made For? (From The Motion Picture "Barbie" Soundtrack) [Instrumental Guitar]
album: Greensleeves (Instrumental Guitar)
album: Inspector Morse Theme (Television Series Soundtrack) [For Guitar]
album: Gymnopédie No.1
album: Christmas
album: Dance of the Blessed Spirits (Acoustic Guitar)
album: Shallow (Instrumental Guitar)
album: Bourrée [From Suite BWV 996 ) (For Acoustic Guitar]
album: Valses Poeticos No.1 `Melodico` (Instrumental Guitar)
album: Cavatina (Theme from "The Deer Hunter")
album: Enter Sandman (Acoustic Guitar)
album: Acoustic Christmas (Acoustic Guitar)
album: Gloomy Morning
album: The Four Seasons, "Winter": 2.Largo (Acoustic Guitar)
album: Winter in the Glen (Acoustic Guitar)
album: What Child Is This
album: Fauré Pavane (Acoustic Guitar)
album: When Two Hearts Align (Acoustic Guitar)
album: Stronger Together (Acoustic Guitar)
album: The Things I Never Said (Acoustic Guitar)
album: Salut d'Amour, Op.12 (Acoustic Guitar)
album: Sonata in F Major RV52: I. Andante (Acoustic Guitar)
album: Mozart: Andante, K.545 (Acoustic Guitar)
album: Strings Of Christmas
album: Sweet Song

Energy
type: PropertyValue
value: 0.116

Speechiness
type: PropertyValue
value: 0.069

Acousticness
type: PropertyValue
value: 0.986

Instrumentalness
type: PropertyValue
value: 0.798

Liveness
type: PropertyValue
value: 0.096

Valence (Positivity)
type: PropertyValue
value: 0.357

Loudness (dB)
type: PropertyValue
value: -16.063

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Air on the G String
type: MusicAlbum
date published: 2022-05-16

Pachelbel´s Canon
type: MusicAlbum
date published: 2022-09-09
track: Pachelbel´s Canon
  type: MusicRecording
  duration: PT3M14S
  duration ms: 194304
  explicit: false
  by artist: Marina Costa
  in album: Pachelbel´s Canon
    type: MusicAlbum
    date published: 2022-09-09
  isrc code: QZNWV2222477
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T11:18:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xa74e28422e75d6280b3ae75ff23718b9b01c4686be133bdda0a1e835fdb039ad
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959128
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959128
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2222477
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T12:33:25Z
  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 0xa74e28422e75d6280b3ae75ff23718b9b01c4686be133bdda0a1e835fdb039ad. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2222477 — a six-check JSON result.
    date published: 2026-07-22T12:33:25Z
  audio: Pachelbel´s Canon
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 116.005
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.78
    additional property: Energy
      type: PropertyValue
      value: 0.128
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0.97
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.944
    additional property: Liveness
      type: PropertyValue
      value: 0.104
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.422
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.298
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major

Humoresque No. 7
type: MusicAlbum
date published: 2022-10-07

Nothing Else Matters
type: MusicAlbum
date published: 2022-10-28
track: Nothing Else Matters - Instrumental Guitar
  type: MusicRecording
  duration: PT4M21S
  duration ms: 261387
  explicit: false
  by artist: Marina Costa
  in album: Nothing Else Matters
    type: MusicAlbum
    date published: 2022-10-28
  isrc code: QZTAT2270220
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T15:39:40+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfd34b48e7ce11fe53801bfcf577f126aefda9a760343a706293c9fa67c1fe05b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958166
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958166
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2270220
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T15:55:19Z
  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 0xfd34b48e7ce11fe53801bfcf577f126aefda9a760343a706293c9fa67c1fe05b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2270220 — a six-check JSON result.
    date published: 2026-07-15T15:55:19Z
  audio: Nothing Else Matters - Instrumental Guitar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 129.021
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.543
    additional property: Energy
      type: PropertyValue
      value: 0.156
    additional property: Speechiness
      type: PropertyValue
      value: 0.059
    additional property: Acousticness
      type: PropertyValue
      value: 0.982
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.918
    additional property: Liveness
      type: PropertyValue
      value: 0.108
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.277
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.773
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Jingle Bells
type: MusicAlbum
date published: 2022-11-11

Siciliano
type: MusicAlbum
date published: 2023-02-17

Mad World (Instrumental Guitar)
type: MusicAlbum
date published: 2023-03-02
track: Mad World - Instrumental Guitar
  type: MusicRecording
  duration: PT3M30S
  duration ms: 210440
  explicit: false
  by artist: Marina Costa
  in album: Mad World (Instrumental Guitar)
    type: MusicAlbum
    date published: 2023-03-02
  isrc code: QZDA82348447
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T05:05:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x047057a7d44898489fbe5d94cf57fe6a7d1b6ac1954777548fe2a7f5bcf2f09e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958975
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958975
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82348447
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T06:12:52Z
  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 0x047057a7d44898489fbe5d94cf57fe6a7d1b6ac1954777548fe2a7f5bcf2f09e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82348447 — a six-check JSON result.
    date published: 2026-07-21T06:12:52Z
  audio: Mad World - Instrumental Guitar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 80.007
    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: 0.622
    additional property: Energy
      type: PropertyValue
      value: 0.116
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.927
    additional property: Liveness
      type: PropertyValue
      value: 0.11
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.205
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.668
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Supermarket Flowers (Instrumental Guitar)
type: MusicAlbum
date published: 2023-03-30

Skye Boat Song (Instrumental Guitar)
type: MusicAlbum
date published: 2023-04-18

Reverie (Instrumental Guitar)
type: MusicAlbum
date published: 2023-06-23

What Was I Made For? (From The Motion Picture "Barbie" Soundtrack) [Instrumental Guitar]
type: MusicAlbum
date published: 2023-09-05

Greensleeves (Instrumental Guitar)
type: MusicAlbum
date published: 2023-09-19

Inspector Morse Theme (Television Series Soundtrack) [For Guitar]
type: MusicAlbum
date published: 2023-10-06
track: Inspector Morse Theme (Television Series Soundtrack) - For Guitar
  type: MusicRecording
  duration: PT3M45S
  duration ms: 225349
  explicit: false
  by artist: Marina Costa
  in album: Inspector Morse Theme (Television Series Soundtrack) [For Guitar]
    type: MusicAlbum
    date published: 2023-10-06
  isrc code: QZTB32367032
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T03:50:13+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5f2b1c01b9d0c1aec610cfa7a8ca8842552d6902ff53c957f96465d9c0a879a0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959100
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959100
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32367032
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T05:29:55Z
  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 0x5f2b1c01b9d0c1aec610cfa7a8ca8842552d6902ff53c957f96465d9c0a879a0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32367032 — a six-check JSON result.
    date published: 2026-07-22T05:29:55Z
  audio: Inspector Morse Theme (Television Series Soundtrack) - For Guitar
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 120.041
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.853
    additional property: Energy
      type: PropertyValue
      value: 0.139
    additional property: Speechiness
      type: PropertyValue
      value: 0.058
    additional property: Acousticness
      type: PropertyValue
      value: 0.977
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.903
    additional property: Liveness
      type: PropertyValue
      value: 0.071
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.241
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.344
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
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      value: Minor

Gymnopédie No.1
type: MusicAlbum
date published: 2023-10-20

Christmas
type: MusicAlbum
date published: 2023-10-23

Dance of the Blessed Spirits (Acoustic Guitar)
type: MusicAlbum
date published: 2023-11-24

Shallow (Instrumental Guitar)
type: MusicAlbum
date published: 2024-02-24
track: Shallow - Instrumental Guitar
  type: MusicRecording
  duration: PT1M43S
  duration ms: 103070
  explicit: false
  by artist: Marina Costa
  in album: Shallow (Instrumental Guitar)
    type: MusicAlbum
    date published: 2024-02-24
  isrc code: QZDA82421986
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T02:02:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf5793d0640ec67fe1a54f50849d0bda920ef562a98eb34b836a41d215794253c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958224
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958224
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82421986
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T02:28:43Z
  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 0xf5793d0640ec67fe1a54f50849d0bda920ef562a98eb34b836a41d215794253c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82421986 — a six-check JSON result.
    date published: 2026-07-16T02:28:43Z
  audio: Shallow - Instrumental Guitar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 97.199
    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: 0.703
    additional property: Energy
      type: PropertyValue
      value: 0.204
    additional property: Speechiness
      type: PropertyValue
      value: 0.08
    additional property: Acousticness
      type: PropertyValue
      value: 0.979
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.943
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.383
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.537
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Bourrée [From Suite BWV 996 ) (For Acoustic Guitar]
type: MusicAlbum
date published: 2024-03-08

Valses Poeticos No.1 `Melodico` (Instrumental Guitar)
type: MusicAlbum
date published: 2024-03-28
track: Valses Poeticos No.1 `Melodico` - Instrumental Guitar
  type: MusicRecording
  duration: PT2M24S
  duration ms: 144192
  explicit: false
  by artist: Marina Costa
  in album: Valses Poeticos No.1 `Melodico` (Instrumental Guitar)
    type: MusicAlbum
    date published: 2024-03-28
  isrc code: QZHN92410667
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-14T23:20:35+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3f356efa45247bca1ce640a6339311c2b03d12845fffb884a98591aa8f445af8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958079
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958079
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92410667
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T00:21:05Z
  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 0x3f356efa45247bca1ce640a6339311c2b03d12845fffb884a98591aa8f445af8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92410667 — a six-check JSON result.
    date published: 2026-07-15T00:21:05Z
  audio: Valses Poeticos No.1 `Melodico` - Instrumental Guitar
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.567
    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
      value: 0.071
    additional property: Acousticness
      type: PropertyValue
      value: 0.959
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.986
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major

Cavatina (Theme from "The Deer Hunter")
type: MusicAlbum
date published: 2024-05-16

Enter Sandman (Acoustic Guitar)
type: MusicAlbum
date published: 2024-09-20
track: Enter Sandman - Acoustic Guitar
  type: MusicRecording
  duration: PT3M46S
  duration ms: 226975
  explicit: false
  by artist: Marina Costa
  in album: Enter Sandman (Acoustic Guitar)
    type: MusicAlbum
    date published: 2024-09-20
  isrc code: QZWFE2446937
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T09:05:45+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5769c26c684fae1ac0dc9f9fee4798faeb8f66063bd5a418e45f1a72026be256
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958271
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958271
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2446937
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T09:16:54Z
  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 0x5769c26c684fae1ac0dc9f9fee4798faeb8f66063bd5a418e45f1a72026be256. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2446937 — a six-check JSON result.
    date published: 2026-07-16T09:16:54Z
  audio: Enter Sandman - Acoustic Guitar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 108.389
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.584
    additional property: Energy
      type: PropertyValue
      value: 0.283
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.973
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.894
    additional property: Liveness
      type: PropertyValue
      value: 0.109
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.365
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.947
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Acoustic Christmas (Acoustic Guitar)
type: MusicAlbum
date published: 2024-10-11

Gloomy Morning
type: MusicAlbum
date published: 2024-10-18
track: Gloomy Morning
  type: MusicRecording
  duration: PT1M13S
  duration ms: 73603
  explicit: false
  by artist: Marina Costa
  in album: Gloomy Morning
    type: MusicAlbum
    date published: 2024-10-18
  isrc code: QZWFQ2424296
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x579591882301a88f6386163c375371529cf95d66548b7c3ba528f880aebbed0b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958607
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958607
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2424296
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-18T21:01:11Z
  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 0x579591882301a88f6386163c375371529cf95d66548b7c3ba528f880aebbed0b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2424296 — a six-check JSON result.
    date published: 2026-07-18T21:01:11Z
  audio: Gloomy Morning
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 183.823
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.414
    additional property: Energy
      type: PropertyValue
      value: 0.206
    additional property: Speechiness
      type: PropertyValue
      value: 0.047
    additional property: Acousticness
      type: PropertyValue
      value: 0.966
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.604
    additional property: Liveness
      type: PropertyValue
      value: 0.177
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.385
    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.23
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

The Four Seasons, "Winter": 2.Largo (Acoustic Guitar)
type: MusicAlbum
date published: 2024-11-06

Winter in the Glen (Acoustic Guitar)
type: MusicAlbum
date published: 2024-12-02

What Child Is This
type: MusicAlbum
date published: 2024-12-15

Fauré Pavane (Acoustic Guitar)
type: MusicAlbum
date published: 2025-02-06
track: Fauré Pavane - Acoustic Guitar
  type: MusicRecording
  duration: PT5M16S
  duration ms: 316199
  explicit: false
  by artist: Marina Costa
  in album: Fauré Pavane (Acoustic Guitar)
    type: MusicAlbum
    date published: 2025-02-06
  isrc code: QZES52562712
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T11:11:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc24192899296358c69f853487238a2eea98ba99208ba519edd158eafe4bef508
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959123
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959123
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52562712
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T11:35:32Z
  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 0xc24192899296358c69f853487238a2eea98ba99208ba519edd158eafe4bef508. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52562712 — a six-check JSON result.
    date published: 2026-07-22T11:35:32Z
  audio: Fauré Pavane - Acoustic Guitar
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 79.888
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.719
    additional property: Energy
      type: PropertyValue
      value: 0.131
    additional property: Speechiness
      type: PropertyValue
      value: 0.057
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.882
    additional property: Liveness
      type: PropertyValue
      value: 0.099
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.498
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.56
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor

When Two Hearts Align (Acoustic Guitar)
type: MusicAlbum
date published: 2025-02-21
track: When Two Hearts Align - Acoustic Guitar
  type: MusicRecording
  duration: PT1M41S
  duration ms: 101776
  explicit: false
  by artist: Marina Costa
  in album: When Two Hearts Align (Acoustic Guitar)
    type: MusicAlbum
    date published: 2025-02-21
  isrc code: QZHN32548486
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T06:15:50+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3a8053cd12a09d642b7086a2ce1a72c0f8363e30c61f34fd0ca5fafa2c6cddb6
  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/QZHN32548486
  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    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 0x3a8053cd12a09d642b7086a2ce1a72c0f8363e30c61f34fd0ca5fafa2c6cddb6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32548486 — a six-check JSON result.
    date published: 2026-07-04T10:04:33Z
  audio: When Two Hearts Align - Acoustic Guitar
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    additional property: Time Signature
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      value: 4
    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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      value: 0.987
    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.554
    additional property: Loudness (dB)
      type: PropertyValue
      value: -13.136
    additional property: Key Name
      type: PropertyValue
      value: G
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      type: PropertyValue
      value: Major

Stronger Together (Acoustic Guitar)
type: MusicAlbum
date published: 2025-03-21
track: Stronger Together - Acoustic Guitar
  type: MusicRecording
  duration: PT2M22S
  duration ms: 142500
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    type: MusicAlbum
    date published: 2025-03-21
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  additional property: OTSTimestamp
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    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 0xedfd6241fbb20a1e602fbd2eb74ec21b1449bd6ef6770f41fe14daae5b922986. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2556435 — a six-check JSON result.
    date published: 2026-07-05T01:12:41Z
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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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      value: 1
    additional property: Time Signature
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      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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The Things I Never Said (Acoustic Guitar)
type: MusicAlbum
date published: 2025-03-31
track: The Things I Never Said - Acoustic Guitar
  type: MusicRecording
  duration: PT1M47S
  duration ms: 107941
  explicit: false
  by artist: Marina Costa
  in album: The Things I Never Said (Acoustic Guitar)
    type: MusicAlbum
    date published: 2025-03-31
  isrc code: QZK6J2571214
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x1377d06fd0db9360bb1859397ff8d3204730546cb0ff74dfcf51139af48e1354
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 956545
  additional property: OTSBitcoinBlockVerifyURL
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    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2571214
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x1377d06fd0db9360bb1859397ff8d3204730546cb0ff74dfcf51139af48e1354. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2571214 — a six-check JSON result.
    date published: 2026-07-03T19:59:51Z
  audio: The Things I Never Said - Acoustic Guitar
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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      value: 0.119
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.99
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.908
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.725
    additional property: Loudness (dB)
      type: PropertyValue
      value: -17.233
    additional property: Key Name
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      value: C
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Salut d'Amour, Op.12 (Acoustic Guitar)
type: MusicAlbum
date published: 2025-04-24

Sonata in F Major RV52: I. Andante (Acoustic Guitar)
type: MusicAlbum
date published: 2025-05-23

Mozart: Andante, K.545 (Acoustic Guitar)
type: MusicAlbum
date published: 2025-08-30

Strings Of Christmas
type: MusicAlbum
date published: 2025-09-22

Sweet Song
type: MusicAlbum
date published: 2025-10-25