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type: MusicGroup
genre: choral
popularity: 3
followers: 3
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additional property: CopyrightChainExplorerURL
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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
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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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album: Rachmaninoff: All-Night Vigil
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  date published: 2015-03-01
  track: All-Night Vigil, Op. 37: I. Amen. Come, Let Us Worship God, Our King
    type: MusicRecording
    duration: PT3M34S
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    by artist: Sergei Rachmaninoff
    by artist: Phoenix Chorale
    by artist: Kansas City Chorale
    by artist: Charles Bruffy
    by artist: Bryan Taylor
    by artist: Paul Davidson
    in album: Rachmaninoff: All-Night Vigil
      type: MusicAlbum
      date published: 2015-03-01
    popularity: 3
    genre: classical
    genre: classical-piano
    genre: concerto
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    additional property: OTSTimestamp
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      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 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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f79b0ea82018e3c1608a26b191e7201b076683f41ac6e6aee24af96b74e8d4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500501 — a six-check JSON result.
      date published: 2026-07-02T03:55:08Z
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  track: All-Night Vigil, Op. 37: II. Praise the Lord, O my soul
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    by artist: Phoenix Chorale
    by artist: Kansas City Chorale
    by artist: Charles Bruffy
    by artist: Julia Scozzafava
    in album: Rachmaninoff: All-Night Vigil
      type: MusicAlbum
      date published: 2015-03-01
    popularity: 4
    genre: classical
    genre: classical-piano
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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
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      date published: 2026-07-02T03:55:08Z
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  track: All-Night Vigil, Op. 37: III. Blessed is the man
  track: All-Night Vigil, Op. 37: IV. Gladsome Light
  track: All-Night Vigil, Op. 37: V. Lord, Now Lettest Thou Thy Servant Depart in Peace
  track: All-Night Vigil, Op. 37: VI. Rejoice, O Virgin Theotokos
  track: All-Night Vigil, Op. 37: VII. The Six Psalms. "Glory to God in the Highest"
  track: All-Night Vigil, Op. 37: VIII. Praise the Name of the Lord
  track: All-Night Vigil, Op. 37: IX. Blessed art Thou, O Lord
  track: All-Night Vigil, Op. 37: X. Having Beheld the Resurrection of Christ
  track: All-Night Vigil, Op. 37: XI. My soul magnifies the Lord
  track: All-Night Vigil, Op. 37: XII. Glory to God in the Highest
  track: All-Night Vigil, Op. 37: XIII. The Troparion. "Today Salvation Has Come to the World"
  track: All-Night Vigil, Op. 37: XIV. The Troparion. "Thou Didst Arise from the Tomb"
  track: All-Night Vigil, Op. 37: XV. To Thee, the Victorious Leader of Triumphant Hosts

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All-Night Vigil, Op. 37: III. Blessed is the man
type: MusicRecording
duration: PT6M37S
duration ms: 397053
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Toby Vaughn Kidd
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 3
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500503
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f460562223f5780386e1338abd357f0370888cfca4a343df04ac33ce263ea. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500503 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: All-Night Vigil, Op. 37: III. Blessed is the man
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All-Night Vigil, Op. 37: IV. Gladsome Light
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duration: PT4M11S
duration ms: 251600
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by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Toby Vaughn Kidd
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500504
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: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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All-Night Vigil, Op. 37: V. Lord, Now Lettest Thou Thy Servant Depart in Peace
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duration: PT4M57S
duration ms: 297253
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by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Frank Fleschner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500505
additional property: CopyrightID
additional property: CopyrightStatus
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
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All-Night Vigil, Op. 37: VI. Rejoice, O Virgin Theotokos
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popularity: 6
genre: classical
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ee648c9a7951c135cb02f3995057a259277c9d1a0b7d8ff4e764edb5215a5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500506 — a six-check JSON result.
  date published: 2026-06-13T13:32:09Z
audio: All-Night Vigil, Op. 37: VI. Rejoice, O Virgin Theotokos
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All-Night Vigil, Op. 37: VII. The Six Psalms. "Glory to God in the Highest"
type: MusicRecording
duration: PT3M25S
duration ms: 205680
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Joseph Warner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500507
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981cad30ffd81beaa8a22e03fd0a3f54548a93a860ba10a64f1ea3970a674920. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500507 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: All-Night Vigil, Op. 37: VII. The Six Psalms. "Glory to God in the Highest"
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All-Night Vigil, Op. 37: VIII. Praise the Name of the Lord
type: MusicRecording
duration: PT2M48S
duration ms: 168920
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Joseph Warner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500508
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4532dc4d910632352ef1e3a7328cfe7c06b222bdf99a166db7b9eeb157d7f79b. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500508 — a six-check JSON result.
  date published: 2026-07-30T00:11:40Z
audio: All-Night Vigil, Op. 37: VIII. Praise the Name of the Lord
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All-Night Vigil, Op. 37: IX. Blessed art Thou, O Lord
type: MusicRecording
duration: PT7M30S
duration ms: 450893
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Joseph Warner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500509
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: OTSHash
additional property: OTSBitcoinBlock
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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 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
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  date published: 2026-07-06T06:56:49Z
audio: All-Night Vigil, Op. 37: IX. Blessed art Thou, O Lord
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All-Night Vigil, Op. 37: X. Having Beheld the Resurrection of Christ
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duration: PT3M54S
duration ms: 234426
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Joseph Warner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 1
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500510
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: OTSVerificationAPI
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1dbd7001a2dc878f182a8f3e94d61246ee188fc52947efbfcff1a5a9002ccc. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500510 — a six-check JSON result.
  date published: 2026-07-29T21:51:49Z
audio: All-Night Vigil, Op. 37: X. Having Beheld the Resurrection of Christ
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All-Night Vigil, Op. 37: XI. My soul magnifies the Lord
type: MusicRecording
duration: PT10M37S
duration ms: 637053
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Joseph Warner
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 1
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500511
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
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02774d3e867405f8efa2fd01915cb4dbc54410eb0ec974667e71b69f4165291b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLWD1500511 — a six-check JSON result.
  date published: 2026-07-29T21:51:49Z
audio: All-Night Vigil, Op. 37: XI. My soul magnifies the Lord
  type: AudioObject
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All-Night Vigil, Op. 37: XII. Glory to God in the Highest
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duration: PT9M22S
duration ms: 562120
explicit: false
by artist: Sergei Rachmaninoff
by artist: Phoenix Chorale
by artist: Kansas City Chorale
by artist: Charles Bruffy
by artist: Bryan Pinkall
in album: Rachmaninoff: All-Night Vigil
  type: MusicAlbum
  date published: 2015-03-01
popularity: 2
genre: classical
genre: classical-piano
genre: concerto
isrc code: GBLWD1500512
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: 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
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All-Night Vigil, Op. 37: XIII. The Troparion. "Today Salvation Has Come to the World"
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All-Night Vigil, Op. 37: XIV. The Troparion. "Thou Didst Arise from the Tomb"
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All-Night Vigil, Op. 37: XV. To Thee, the Victorious Leader of Triumphant Hosts
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