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type: MusicGroup
genre: requiem
popularity: 3
followers: 17
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
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  date published: 2026-06-17T08:11:48Z
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track: Laut verkünde unsre Freude (2 Tenors, Baritone, Chorus)
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  duration: PT3M37S
  duration ms: 217786
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  by artist: Wolfgang Amadeus Mozart
  by artist: Young Hoon Heo
  by artist: Lars-Olivier Rühl
  by artist: Jurgen Appel
  by artist: Opernchor des Staatstheaters Kassel
  by artist: Spohr Kammerorchester Kassel
  by artist: Roberto Paternostro
  in album: Mozart: Requiem in D Minor, K. 626
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    date published: 2016-09-09
  genre: classical
  genre: classical-era
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:53:27Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86181d2d074420c5c10cedd4d24a05241dcdc08d4659cc0122f80ea5548fe1e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKI190852514.
    date published: 2026-07-08T03:53:27Z
  audio: Laut verkünde unsre Freude (2 Tenors, Baritone, Chorus)
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    additional property: Energy
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track: Laut verkünde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht (Tenor, Baritone)
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-08T08:56:20Z
  audio: Laut verkünde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht (Tenor, Baritone)
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    additional property: Danceability
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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track: Dir, Seele des Weltalls, K. 429: Dir Seele des Weltalls (Chorus)
track: Zerfliesset heut', geliebte Bruder, K. 483
track: Die ihr des unermesslichen Weltalls Schopfer ehrt, K. 619
track: Laut verkunde unsre Freude (Chorus)
track: Laut verkunde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht
track: Laut verkünde unsre Freude, K. 623: Duet: Lange sollen diese Mauern (Tenor, Baritone)
track: Dir, Seele des Weltalls, K. 429: Aria: Dir danken wir die Freude
track: Lied zur Gesellenreise, K. 468
track: Ihr unsre neuen Leiter, K. 484
track: Die Maurerfreude, K. 471
track: Lobegesang auf die feierliche Johannisloge, K. 148, "O heiliges Band der Freundschaft"

Dir, Seele des Weltalls, K. 429: Dir Seele des Weltalls (Chorus)
type: MusicRecording
duration: PT3M2S
duration ms: 182253
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Kassel State Opera Chorus, male voices
by artist: Kassel Spohr Chamber Orchestra
by artist: Roberto Paternostro
in album: Mozart, W.A.: Masonic Music (Complete)
  type: MusicAlbum
  date published: 2009-02-24
genre: classical
genre: classical-era
isrc code: HKI190852501
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32cb9b267acc2f201de559a21e305cb31a029afb83f1319458efd384a187fed. 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/HKI190852501.
  date published: 2026-07-08T08:56:20Z
audio: Dir, Seele des Weltalls, K. 429: Dir Seele des Weltalls (Chorus)
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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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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  additional property: Loudness (dB)
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Zerfliesset heut', geliebte Bruder, K. 483
type: MusicRecording
duration: PT2M22S
duration ms: 142640
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Kassel State Opera Chorus, male voices
by artist: Alberto Bertino
in album: Mozart, W.A.: Masonic Music (Complete)
  type: MusicAlbum
  date published: 2009-02-24
genre: classical
genre: classical-era
isrc code: HKI190852506
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
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
  type: PropertyValue
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Zerfliesset heut', geliebte Bruder, K. 483
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  additional property: Mode (Major/Minor)
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Die ihr des unermesslichen Weltalls Schopfer ehrt, K. 619
type: MusicRecording
duration: PT7M56S
duration ms: 476960
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Alberto Bertino
in album: Mozart, W.A.: Masonic Music (Complete)
  type: MusicAlbum
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genre: classical
genre: classical-era
isrc code: HKI190852510
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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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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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78faa51ce18c77547d00772062ab78c3cce26c034c77b3c1b04e2bdf0e654cb4. 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/HKI190852510.
  date published: 2026-07-08T08:56:20Z
audio: Die ihr des unermesslichen Weltalls Schopfer ehrt, K. 619
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Laut verkünde unsre Freude, K. 623: Duet: Lange sollen diese Mauern (Tenor, Baritone)
type: MusicRecording
duration: PT2M56S
duration ms: 176666
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Jurgen Appel
by artist: Spohr Kammerorchester Kassel
by artist: Roberto Paternostro
in album: Mozart: Requiem in D Minor, K. 626
  type: MusicAlbum
  date published: 2016-09-09
genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20343465ee2040cdccff241f25e76aeeb4b514a474b079f372fdc81032ecc40c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190852516.
  date published: 2026-08-01T00:40:43Z
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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

Dir, Seele des Weltalls, K. 429: Aria: Dir danken wir die Freude
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by artist: Young Hoon Heo
by artist: Kassel State Opera Chorus, male voices
by artist: Kassel Spohr Chamber Orchestra
by artist: Roberto Paternostro
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genre: classical
genre: classical-era
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  date published: 2026-07-31T00:26:26Z
audio: Dir, Seele des Weltalls, K. 429: Aria: Dir danken wir die Freude
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additional property: OTSVerifyInstructions
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Lied zur Gesellenreise, K. 468
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by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Alberto Bertino
in album: Mozart, W.A.: Masonic Music (Complete)
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genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:20:10Z
audio: Lied zur Gesellenreise, K. 468
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additional property: OTSVerifyInstructions
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Ihr unsre neuen Leiter, K. 484
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by artist: Wolfgang Amadeus Mozart
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by artist: Kassel State Opera Chorus, male voices
by artist: Alberto Bertino
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genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: Ihr unsre neuen Leiter, K. 484
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additional property: OTSVerifyInstructions
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Die Maurerfreude, K. 471
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by artist: Kassel State Opera Chorus, male voices
by artist: Kassel Spohr Chamber Orchestra
by artist: Roberto Paternostro
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genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: Die Maurerfreude, K. 471
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additional property: OTSVerifyInstructions
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Lobegesang auf die feierliche Johannisloge, K. 148, "O heiliges Band der Freundschaft"
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by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Kassel State Opera Chorus, male voices
by artist: Alberto Bertino
in album: Mozart, W.A.: Masonic Music (Complete)
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genre: classical
genre: classical-era
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: Lobegesang auf die feierliche Johannisloge, K. 148, "O heiliges Band der Freundschaft"
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additional property: OTSVerifyInstructions
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Acousticness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Laut verkunde unsre Freude (Chorus)
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duration: PT3M37S
duration ms: 217786
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Lars-Olivier Ruehl
by artist: Jurgen Appel
by artist: Kassel State Opera Chorus, male voices
by artist: Kassel Spohr Chamber Orchestra
by artist: Roberto Paternostro
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genre: classical
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:39:04Z
audio: Laut verkunde unsre Freude (Chorus)
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Laut verkunde unsre Freude, K. 623: Aria: Dieser Gottheit Allmacht
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by artist: Wolfgang Amadeus Mozart
by artist: Young Hoon Heo
by artist: Lars-Olivier Ruehl
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by artist: Roberto Paternostro
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