Masterwerk
type: MusicGroup
popularity: 6
followers: 344
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748ff3f753bf469105ab072dbaccac2a6080f2e96706b61ddce9ca75b0d62aa5. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51fad800-5401-413b-ac22-b70139251ab5.json and https://artists.proofprofile.net/proofs/artist/51fad800-5401-413b-ac22-b70139251ab5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: Waiting for the Sun
  type: MusicAlbum
  date published: 1982
album: The Art of the Spanish Guitar
  type: MusicAlbum
  date published: 2000
album: Street Angel
  type: MusicAlbum
  date published: 2000
album: Popfast
  type: MusicAlbum
  date published: 2000
album: Mood Introspective
  type: MusicAlbum
  date published: 2000
album: Acoustic Ambient
  type: MusicAlbum
  date published: 2000
album: Ambient Guitar Music
  type: MusicAlbum
  date published: 2000
album: Rebel Heart
  type: MusicAlbum
  date published: 2000
album: Neo Lounge
  type: MusicAlbum
  date published: 2000
album: Discothèque
  type: MusicAlbum
  date published: 2000
album: Blue Guitar
  type: MusicAlbum
  date published: 2000
album: Astral Drive
  type: MusicAlbum
  date published: 2000
album: Masterwerk Classic Guitar Original Compositions
  type: MusicAlbum
  date published: 2000
album: The Art of the Guitar V
  type: MusicAlbum
  date published: 2000
album: Popfast
  type: MusicAlbum
  date published: 2001
album: Extended Trance Trax
  type: MusicAlbum
  date published: 2014-10-11
album: Over The Rainbow
  type: MusicAlbum
  date published: 2015-03-10
album: Flashback 80's
  type: MusicAlbum
  date published: 2015-03-19
album: Club Erotica
  type: MusicAlbum
  date published: 2015-03-23
album: Club Dance Strobe
  type: MusicAlbum
  date published: 2015-03-24
album: The Art of the Guitar
  type: MusicAlbum
  date published: 2015-04-08
album: The Art of the Guitar
  type: MusicAlbum
  date published: 2015-04-08
album: The Art Of The Guitar II
  type: MusicAlbum
  date published: 2015-06-14
album: The Art Of The Guitar II
  type: MusicAlbum
  date published: 2015-06-14
album: Flashback 80's V2
  type: MusicAlbum
  date published: 2015-06-18
album: Flashback 80's V2
  type: MusicAlbum
  date published: 2015-06-18
album: Masterwerk Pop/EDM
  type: MusicAlbum
  date published: 2015-09-29
album: It's Christmas Time
  type: MusicAlbum
  date published: 2016-02-16
album: Kids Fun Zone
  type: MusicAlbum
  date published: 2016-05-26
album: Flashback 80's, Vol. 3
  type: MusicAlbum
  date published: 2016-05-31
album: Street Angel
  type: MusicAlbum
  date published: 2018-10-30
album: Masterwerk Classic Guitar Original Compositions
  type: MusicAlbum
  date published: 2018-12-07
album: Acoustic Ambient
  type: MusicAlbum
  date published: 2019-01-01
album: 99 Cues (For Film / TV)
  type: MusicAlbum
  date published: 2019-01-04
album: Aspire
  type: MusicAlbum
  date published: 2020-02-05
album: Liquid Lounge
  type: MusicAlbum
  date published: 2020-03-20
album: Dance Collection
  type: MusicAlbum
  date published: 2020-04-23
album: Masterwerk, Vol. 1
  type: MusicAlbum
  date published: 2020-05-14
album: Masterwerk, Vol. 2
  type: MusicAlbum
  date published: 2020-05-14
album: Masterwerk, Vol. 3
  type: MusicAlbum
  date published: 2020-05-14
album: Masterwerk, Vol. 4
  type: MusicAlbum
  date published: 2020-05-14
album: Masterwerk, Vol. 5
  type: MusicAlbum
  date published: 2020-05-14
album: Mood Introspective
  type: MusicAlbum
  date published: 2020-07-16
album: After Hours
  type: MusicAlbum
  date published: 2020-08-12
album: Blue Starlight Lounge
  type: MusicAlbum
  date published: 2022-11-18
album: Open Road
  type: MusicAlbum
  date published: 2022-11-20
album: Ambient Sleep Music
  type: MusicAlbum
  date published: 2023-02-17
album: Open Road
  type: MusicAlbum
  date published: 2023-02-20
album: Deja Blue
  type: MusicAlbum
  date published: 2023-03-27
album: R&B
  type: MusicAlbum
  date published: 2023-04-03
album: Pop & Soul
  type: MusicAlbum
  date published: 2024-04-05
album: Chill Mixx
  type: MusicAlbum
  date published: 2024-05-14
album: Nu-Disco
  type: MusicAlbum
  date published: 2024-10-15
album: Once Upon a Time
  type: MusicAlbum
  date published: 2025-04-01
album: Underneath the Neon Sky
  type: MusicAlbum
  date published: 2025-10-09
track: Affair of the Heart

Affair of the Heart
type: MusicRecording
duration: PT3M22S
duration ms: 202945
explicit: false
by artist: Masterwerk
in album: Chill out Spanish Guitar Instrumentals
  type: MusicAlbum
  date published: 2015-12-16
popularity: 0
isrc code: US5UL1220414
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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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd8fb5eae8f59ba28932ae82d6b2400a7f43379c76739a13fbd5ce2285735d0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US5UL1220414.
  date published: 2026-07-31T23:30:38Z
audio: Affair of the Heart
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Danceability
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  additional property: Speechiness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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