Brian Duyn
type: MusicGroup
popularity: 13
followers: 9
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSRecordURL
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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. 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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T06:58:10Z
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track: Circe, Z. 575: Their Necessary Aid You Use (Tenor, Bass, Chorus)
track: Circe, Z. 575: Magicians' Dance
track: Circe, Z. 575: Pluto, Arise! (Bass)
track: Sir Barnay Whigg, Z. 589: Blow, Boreas, Blow
track: Circe, Z. 575: We Must Assemble By a Sacrifice (Bass, Chorus)
track: Circe, Z. 575: Come Every Demon (Tenor, Chorus)
track: Circe, Z. 575: Lovers Who To Their First Embraces Go (Soprano, Alto, Chorus)

Circe, Z. 575: Their Necessary Aid You Use (Tenor, Bass, Chorus)
type: MusicRecording
duration: PT2M48S
duration ms: 168480
explicit: false
by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
isrc code: HKI190744822
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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additional property: CopyrightChainExplorerURL
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad27c595fa396b6b70f7db6ec24089f333f2cfdda6a98e34e1d62f805928692d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190744822.
  date published: 2026-07-08T08:56:20Z
audio: Circe, Z. 575: Their Necessary Aid You Use (Tenor, Bass, Chorus)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.51
  additional property: Musical Key
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    value: 11
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Circe, Z. 575: Magicians' Dance
type: MusicRecording
duration: PT1M34S
duration ms: 94493
explicit: false
by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
isrc code: HKI190744824
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf75fe6352ec5d1bb61ee1b1ee9002e5f824893fb92f34a2494810e2cc8748d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI190744824.
  date published: 2026-06-13T15:41:10Z
audio: Circe, Z. 575: Magicians' Dance
  type: AudioObject
  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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  additional property: Danceability
    type: PropertyValue
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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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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.676
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
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Circe, Z. 575: Pluto, Arise! (Bass)
type: MusicRecording
duration: PT1M17S
duration ms: 77493
explicit: false
by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
isrc code: HKI190744825
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T16:33:09+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190744825
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe269ed9cf0528a3604ab0f34d269476ae1a69522fcdf747c9611ea24159e309e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190744825.
  date published: 2026-07-08T03:20:19Z
audio: Circe, Z. 575: Pluto, Arise! (Bass)
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
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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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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Sir Barnay Whigg, Z. 589: Blow, Boreas, Blow
type: MusicRecording
duration: PT3M50S
duration ms: 230333
explicit: false
by artist: Henry Purcell
by artist: Brian Duyn
by artist: Giles Tomkins
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6def44cebbf71b4fa462bd7164f343206b7c8fb75066bf9b10a9520f87db94c4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/HKI190744812.
  date published: 2026-07-31T15:59:18Z
audio: Sir Barnay Whigg, Z. 589: Blow, Boreas, Blow
  type: AudioObject
  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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  additional property: Time Signature
    type: PropertyValue
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  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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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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isrc code: HKI190744812
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Circe, Z. 575: We Must Assemble By a Sacrifice (Bass, Chorus)
type: MusicRecording
duration: PT1M37S
duration ms: 97000
explicit: false
by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab4e17133add83a6bfbbbb79902c11e58ace2f4d4c0b6ee86a2fb5adb1baec6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190744821.
  date published: 2026-07-31T12:24:41Z
audio: Circe, Z. 575: We Must Assemble By a Sacrifice (Bass, Chorus)
  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: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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isrc code: HKI190744821
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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

Circe, Z. 575: Come Every Demon (Tenor, Chorus)
type: MusicRecording
duration: PT3M11S
duration ms: 191560
explicit: false
by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
  type: MusicAlbum
  date published: 2008-03-25
genre: classical
genre: choral
subject of: OpenTimestamps Proof of Existence
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audio: Circe, Z. 575: Come Every Demon (Tenor, Chorus)
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Circe, Z. 575: Lovers Who To Their First Embraces Go (Soprano, Alto, Chorus)
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by artist: Henry Purcell
by artist: Giles Tomkins
by artist: Brian Duyn
by artist: Peter Mahon
by artist: Neil Aronoff
by artist: Nicole Bower
by artist: Roz McArthur
by artist: Aradia Ensemble
by artist: Kevin Mallon
in album: Purcell: Theatre Music, Vol. 1 - Amphitryon / Sir Barnaby Whigg / The Gordian Knot Unty'D / Circe
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  date published: 2008-03-25
genre: classical
genre: choral
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