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type: MusicGroup
genre: opera
popularity: 3
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-16T14:51:55Z
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track: From the House of the Dead, JW I/11, Act I: Přivedou dnes pána! - Live at Grosses Festspielhaus, Salzburg , 1992
track: Lohengrin, WWV 75, Act III Scene 3: Was bringen die? Was tun sie kund?
track: Khovanshchina, Act IV: Gospodi boze moj! - Preobrazhensky March - Strel'cy! Cari i gosudari Ivan i Petr
track: Lohengrin, WWV 75, Act II Scene 3: Nun hört, dem Lande will er uns entführen
track: Khovanshchina, Act IV: Vozle recki na luzocke

From the House of the Dead, JW I/11, Act I: Přivedou dnes pána! - Live at Grosses Festspielhaus, Salzburg , 1992
type: MusicRecording
duration: PT6M41S
duration ms: 401346
explicit: false
by artist: Leoš Janáček
by artist: Bojidar Nikolov
by artist: Barry Mccauley
by artist: Peter Fraiss
by artist: Josef Veverka
by artist: Richard Novak
by artist: Nicolai Ghiaurov
by artist: Harry Peeters
by artist: Wiener Philharmoniker
by artist: Claudio Abbado
by artist: Wiener Staatsopernchor
by artist: Peter Burian
in album: Janácek: From the House of the Dead
  type: MusicAlbum
  date published: 2010-01-01
popularity: 0
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: DEF059232503
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  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
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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 0x114b8c45ed4ed85141d40e3ee193ed0f5a1ad741618e029662cdea53d1d78278. 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/DEF059232503.
  date published: 2026-07-08T03:20:19Z
audio: From the House of the Dead, JW I/11, Act I: Přivedou dnes pána! - Live at Grosses Festspielhaus, Salzburg , 1992
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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Lohengrin, WWV 75, Act III Scene 3: Was bringen die? Was tun sie kund?
type: MusicRecording
duration: PT7M48S
duration ms: 468133
explicit: false
by artist: Richard Wagner
by artist: Peter Koves
by artist: Kurt Moll
by artist: Bojidar Nikolov
by artist: Franz Kasemann
by artist: Claudio Otelli
by artist: Siegfried Jerusalem
by artist: Wiener Staatsopernchor
by artist: Peter Burian
by artist: Wiener Philharmoniker
by artist: Claudio Abbado
in album: Wagner: Lohengrin
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: opera
isrc code: DEF059131640
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additional property: OTSVerificationAPI
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7200a8fa3b386da928c5266a8cc391c11657fb0e6ddf7412d228c20d2a64ae0. 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/DEF059131640.
  date published: 2026-07-08T03:20:19Z
audio: Lohengrin, WWV 75, Act III Scene 3: Was bringen die? Was tun sie kund?
  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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Khovanshchina, Act IV: Gospodi boze moj! - Preobrazhensky March - Strel'cy! Cari i gosudari Ivan i Petr
type: MusicRecording
duration: PT4M47S
duration ms: 287066
explicit: false
by artist: Modest Mussorgsky
by artist: Vladimir Atlantov
by artist: Marjana Lipovsek
by artist: Bojidar Nikolov
by artist: Orchester der Wiener Staatsoper
by artist: Claudio Abbado
by artist: Wiener Staatsopernchor
by artist: Slovak Philharmonic Choir
by artist: Helmut Froschauer
by artist: Karl Kamper
by artist: Slovak Philharmonic Chorus
in album: Mussorgsky: Khovanshchina
  type: MusicAlbum
  date published: 1990-01-01
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: DEF058931232
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
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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 0x5ea0106c5f7867aa0246fe4852f32ccb669f98bb71eeebf94ca1a536120b3d88. 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/DEF058931232.
  date published: 2026-07-08T03:20:19Z
audio: Khovanshchina, Act IV: Gospodi boze moj! - Preobrazhensky March - Strel'cy! Cari i gosudari Ivan i Petr
  type: AudioObject
  additional property: Tempo (BPM)
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    type: PropertyValue
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    type: PropertyValue
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Lohengrin, WWV 75, Act II Scene 3: Nun hört, dem Lande will er uns entführen
type: MusicRecording
duration: PT2M6S
duration ms: 126000
explicit: false
by artist: Richard Wagner
by artist: Peter Koves
by artist: Bojidar Nikolov
by artist: Franz Kasemann
by artist: Claudio Otelli
by artist: Hartmut Welker
by artist: Amy Linda Domaracki
by artist: Ingrid Sieghart
by artist: Senta Fischer
by artist: Elaine MacKillop
by artist: Wiener Philharmoniker
by artist: Claudio Abbado
in album: Wagner: Lohengrin
  type: MusicAlbum
  date published: 1994-01-01
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0098cf64621eaa0fc4f98b648afbdfd956e98330b721cd82a999db2905dc5292. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEF059131631.
  date published: 2026-07-29T13:09:35Z
audio: Lohengrin, WWV 75, Act II Scene 3: Nun hört, dem Lande will er uns entführen
  type: AudioObject
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isrc code: DEF059131631
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: 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

Khovanshchina, Act IV: Vozle recki na luzocke
type: MusicRecording
duration: PT5M24S
duration ms: 324226
explicit: false
by artist: Modest Mussorgsky
by artist: Aage Haugland
by artist: Bojidar Nikolov
by artist: Orchester der Wiener Staatsoper
by artist: Claudio Abbado
by artist: Slovak Philharmonic Choir
by artist: Wiener Staatsopernchor
by artist: Helmut Froschauer
by artist: Karl Kamper
by artist: Slovak Philharmonic Chorus
in album: Mussorgsky: Khovanshchina
  type: MusicAlbum
  date published: 1990-01-01
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10066c9f8837c6f47af7da75c82c063741d110ce40622ce5164b562da3f7ca05. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/DEF058931227.
  date published: 2026-07-31T06:58:00Z
audio: Khovanshchina, Act IV: Vozle recki na luzocke
  type: AudioObject
  additional property: Tempo (BPM)
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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: Instrumentalness
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additional property: CopyrightID
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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