Desborough School Choir
type: MusicGroup
genre: choral
genre: requiem
popularity: 7
followers: 1
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: 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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee54fdd12578f7d25917d72cfbeb557a7a46cefb66ea1b2e134d55067a21a01. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/942df8fe-852e-4d4c-a4c5-3c8af456a26e.json and https://artists.proofprofile.net/proofs/artist/942df8fe-852e-4d4c-a4c5-3c8af456a26e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
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track: Te Deum, H. 118: I. Te Deum - Live at St. Alban's Cathedral, UK, 1981
track: Te Deum, H. 118: II. Tibi omnes - Live at St. Alban's Cathedral, UK, 1981
track: Te Deum, H. 118: III. Dignare - Live at St. Alban's Cathedral, UK, 1981
track: Te Deum, H. 118: IV. Christe, rex gloriae - Live at St. Alban's Cathedral, UK, 1981
track: Te Deum, H. 118: V. Te ergo quaesumus - Live at St. Alban's Cathedral, UK, 1981
track: Te Deum, H. 118: VI. Judex crederis - Live at St. Alban's Cathedral, UK, 1981

Te Deum, H. 118: I. Te Deum - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT7M23S
duration ms: 443360
explicit: false
by artist: Hector Berlioz
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
isrc code: DEF058104541
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-06-23T07:56:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b124be6f787c70a8ed48ae459a8ebcde2d22838b2db9c3ef0f22b4a4e5c8884
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104541
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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: 2026-07-02T03:55:08+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 0x6b124be6f787c70a8ed48ae459a8ebcde2d22838b2db9c3ef0f22b4a4e5c8884. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104541.
  date published: 2026-07-02T03:55:08Z
audio: Te Deum, H. 118: I. Te Deum - Live at St. Alban's Cathedral, UK, 1981
  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)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Loudness (dB)
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  additional property: Mode Name
    type: PropertyValue
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Te Deum, H. 118: II. Tibi omnes - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT9M19S
duration ms: 559773
explicit: false
by artist: Hector Berlioz
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
isrc code: DEF058104542
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104542
additional property: OTSTimestamp
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  value: 2026-07-13T07:53:33Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
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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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462a15a223acc31caa6de3fa2d9a1b42f45f14938f8a1b634a8cc71dfa82b31. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104542.
  date published: 2026-07-13T07:53:33Z
audio: Te Deum, H. 118: II. Tibi omnes - Live at St. Alban's Cathedral, UK, 1981
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.078
  additional property: Energy
    type: PropertyValue
    value: 0.037
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.891
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.485
  additional property: Key Name
    type: PropertyValue
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Te Deum, H. 118: III. Dignare - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT7M9S
duration ms: 429360
explicit: false
by artist: Hector Berlioz
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe406cf3c0e37facadec54a6d9a5f771ed23fe4f01fe9d75884a6bc1dd394b539. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DEF058104543.
  date published: 2026-07-29T13:38:16Z
audio: Te Deum, H. 118: III. Dignare - Live at St. Alban's Cathedral, UK, 1981
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 106.034
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.164
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.957
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.889
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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isrc code: DEF058104543
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960113
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960113
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:38:16+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 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

Te Deum, H. 118: IV. Christe, rex gloriae - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT5M16S
duration ms: 316506
explicit: false
by artist: Hector Berlioz
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd079685cde954328498284bc72af227afb3cae6cbf4dc08b14d2b79a97a6c8f5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEF058104544.
  date published: 2026-07-29T11:07:37Z
audio: Te Deum, H. 118: IV. Christe, rex gloriae - Live at St. Alban's Cathedral, UK, 1981
  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
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.174
  additional property: Energy
    type: PropertyValue
    value: 0.168
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.944
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.803
  additional property: Liveness
    type: PropertyValue
    value: 0.253
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.139
  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: DEF058104544
additional property: CopyrightID
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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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
  type: PropertyValue
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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

Te Deum, H. 118: V. Te ergo quaesumus - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT6M59S
duration ms: 419800
explicit: false
by artist: Hector Berlioz
by artist: Francisco Araiza
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ff73ba9b6ec2c6923228b4135774ff5b0434ab2e0d5a6c08ed0ad4f3a2d6c. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DEF058104545.
  date published: 2026-07-29T13:38:16Z
audio: Te Deum, H. 118: V. Te ergo quaesumus - Live at St. Alban's Cathedral, UK, 1981
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.053
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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    value: 0
  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
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
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  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)
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isrc code: DEF058104545
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSVerificationAPI
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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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

Te Deum, H. 118: VI. Judex crederis - Live at St. Alban's Cathedral, UK, 1981
type: MusicRecording
duration: PT10M28S
duration ms: 628933
explicit: false
by artist: Hector Berlioz
by artist: Martin Haselböck
by artist: European Community Youth Orchestra
by artist: Claudio Abbado
by artist: London Symphony Chorus
by artist: London Philharmonic Choir
by artist: Wooburn Singers
by artist: St. Alban's School Choir
by artist: Haberdasher's Aske's School Boy's Choir
by artist: Southend Boys Choir
by artist: Desborough School Choir
by artist: The Choir of Forest School, Winnersh
by artist: The Choirboys of High Wycombe Parish Church
in album: Berlioz: Te Deum
  type: MusicAlbum
  date published: 1982-01-01
genre: classical
genre: orchestra
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa8f6925546f2b818bea1863cd8773d721ecd37d0a666d53a7999ae40455edf. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104546.
  date published: 2026-07-29T19:35:34Z
audio: Te Deum, H. 118: VI. Judex crederis - Live at St. Alban's Cathedral, UK, 1981
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.762
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.118
  additional property: Energy
    type: PropertyValue
    value: 0.159
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.88
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.454
  additional property: Liveness
    type: PropertyValue
    value: 0.147
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.09
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.134
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: DEF058104546
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
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  value: 960138
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-29T19:35:34+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF058104546
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34+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 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