Lege Artis Chamber Choir
type: MusicGroup
genre: choral
genre: gregorian chant
popularity: 27
followers: 1287
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75575f9f90d316199f8c019515f777b2314de2f3e17ba65a3e00f73bec795aca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/489b852f-552b-44eb-b9d6-cfc7bde0a51e.json and https://artists.proofprofile.net/proofs/artist/489b852f-552b-44eb-b9d6-cfc7bde0a51e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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album: Rachmaninoff: Liturgy of St. John Crysostom - Concerto for Choir
  type: MusicAlbum
  date published: 2022-11-11
album: Mikhail Ippolitov-Ivanov: Vespers - Liturgy of St. John Chrysostom
  type: MusicAlbum
  date published: 2022-11-11
album: Knaifel: Lukomoriye
  type: MusicAlbum
  date published: 2018-04-20
  track: O Comforter
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    by artist: Alexander Knaifel
    by artist: Lege Artis Chamber Choir
    by artist: Boris Abalian
    in album: Knaifel: Lukomoriye
      type: MusicAlbum
      date published: 2018-04-20
    genre: russian-contemporary-classical
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    additional property: OTSTimestamp
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      value: 2026-07-30T16:10:47Z
    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: 2026-07-30T16:10:47Z
    audio: O Comforter
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album: Come, Let Us Worship
  type: MusicAlbum
  date published: 2012-01-01
album: Selections from Medieval Russian Vocal Art
  type: MusicAlbum
  date published: 2011-04-05
album: Alexander Knaifel: Blazhenstva
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  track: Blazhenstva
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    by artist: Ivan Monighetti
    by artist: Tatiana Melentieva
    by artist: Piotr Migunov
    by artist: State Hermitage Orchestra
    by artist: Lege Artis Chamber Choir
    in album: Alexander Knaifel: Blazhenstva
      type: MusicAlbum
      date published: 2008-09-26
    genre: russian-contemporary-classical
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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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      date published: 2026-07-31T20:22:46Z
    audio: Blazhenstva
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album: Structure of the Mass - The Evolution from 14th to 20th Century
album: Songs of Love and Harmony
album: Sergei Rachmaninov: Liturgy of St. John Chrysostom, Op. 31
album: Mikhail Ippolitov-Ivanov: Liturgy of St. John Chrysostom, Op. 37 and Vespers, Op. 43
album: Dmitry Bortniansky: Glory Be to God
album: Ancient Psalms of the Orthodox Church
album: We Glorify You with Love - Songs to the Virgin Mary
album: Introducing
album: Russia Liturgical Chants
album: Domus Silenti
album: Verbum Lucis pt II
album: Verbum Lucis
album: Lux In Cordibus pt II
album: Lux In Cordibus
album: Anima Lucis

Time Signature
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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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Mode Name
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Structure of the Mass - The Evolution from 14th to 20th Century
type: MusicAlbum
date published: 2008-08-19

Songs of Love and Harmony
type: MusicAlbum
date published: 2008-08-19

Sergei Rachmaninov: Liturgy of St. John Chrysostom, Op. 31
type: MusicAlbum
date published: 2008-08-19

Mikhail Ippolitov-Ivanov: Liturgy of St. John Chrysostom, Op. 37 and Vespers, Op. 43
type: MusicAlbum
date published: 2008-08-19

Dmitry Bortniansky: Glory Be to God
type: MusicAlbum
date published: 2008-08-19

Ancient Psalms of the Orthodox Church
type: MusicAlbum
date published: 2008-08-19
track: Hymn for Lent for Male Choir: Tebe Odeyushchagosia svetom (Thou who Art Clothed In Light)
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  by artist: Lege Artis Chamber Choir
  by artist: Boris Abalyan
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    type: MusicAlbum
    date published: 2008-08-19
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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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    date published: 2026-07-07T14:50:41Z
  audio: Hymn for Lent for Male Choir: Tebe Odeyushchagosia svetom (Thou who Art Clothed In Light)
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    additional property: Tempo (BPM)
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    additional property: Danceability
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    additional property: Valence (Positivity)
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track: Byzantine Liturgy for Male Choir: Dostoino est (It Is Worthy)
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  by artist: Lege Artis Chamber Choir
  by artist: Boris Abalyan
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    date published: 2008-08-19
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-22T18:47:29Z
  audio: Byzantine Liturgy for Male Choir: Dostoino est (It Is Worthy)
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track: Liturgy for Male Choir: Izhe kheruvimy
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  by artist: Lege Artis Chamber Choir
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Liturgy for Male Choir: Izhe kheruvimy
track: Liturgy for Male Choir: Vo tsarstvii Tvoem (In Thy Kingdom)
track: Serbian Liturgy for Male Choir: Izhe kheruvimy
track: Liturgy for Male Choir: Dostoino i pravedno est (It Is Meet and Worthy)
track: Velikoe Slavoslovie - Serbian Greater Doxology for Male Choir
track: Arkhangelskii glas vopiem (Hymn for the Birth of the Virgin) for Female Choir
track: Hymn for the Annunciation for Female Choir: Sovet predvechnyi (Harmony Everlasting)
track: Eight-part Hymn for Mixed Choir: Voshel esi vo Tserkov
track: Chant for Male Choir: Blagosloven esi, Gospodi, Znamenny

OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441ea8f012faa5749e7ac80d57b8c360e643502bbb0cb2af24b33e0d7094cc3b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302029.
date published: 2026-07-02T03:30:09Z

Liturgy for Male Choir: Izhe kheruvimy
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additional property: Loudness (dB)
  type: PropertyValue
  value: -18.969
additional property: Key Name
  type: PropertyValue
  value: F
additional property: Mode Name
  type: PropertyValue
  value: Major

Liturgy for Male Choir: Vo tsarstvii Tvoem (In Thy Kingdom)
type: MusicRecording
duration: PT3M2S
duration ms: 182706
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302030
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T02:08:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbf62fba036c2f30fb457d23ad04e44ab4b7c06e4ab28b19bf1b0d9f54384494c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960337
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960337
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302030
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:51:48Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf62fba036c2f30fb457d23ad04e44ab4b7c06e4ab28b19bf1b0d9f54384494c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB790302030.
  date published: 2026-07-31T02:51:48Z
audio: Liturgy for Male Choir: Vo tsarstvii Tvoem (In Thy Kingdom)
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 146.077
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.23
  additional property: Energy
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    value: 0.375
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.968
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.049
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.99
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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Serbian Liturgy for Male Choir: Izhe kheruvimy
type: MusicRecording
duration: PT7M58S
duration ms: 478133
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302031
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T13:27:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee61d142d877276990cb82aa9d298e5b9f550977f4aa83015690cec0efcb31da
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: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302031
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:38:16Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee61d142d877276990cb82aa9d298e5b9f550977f4aa83015690cec0efcb31da. 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/DEB790302031.
  date published: 2026-07-29T13:38:16Z
audio: Serbian Liturgy for Male Choir: Izhe kheruvimy
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 102.034
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.132
  additional property: Energy
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    value: 0.136
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.923
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.038
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.613
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Liturgy for Male Choir: Dostoino i pravedno est (It Is Meet and Worthy)
type: MusicRecording
duration: PT1M30S
duration ms: 90560
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302032
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:30:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd7334f868fa5e124eeecbbe088bbf972fd5d45f01d6655525e62ed12e9ace09b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302032
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7334f868fa5e124eeecbbe088bbf972fd5d45f01d6655525e62ed12e9ace09b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEB790302032.
  date published: 2026-07-31T21:25:57Z
audio: Liturgy for Male Choir: Dostoino i pravedno est (It Is Meet and Worthy)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.262
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.175
  additional property: Energy
    type: PropertyValue
    value: 0.33
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.767
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.03
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.095
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
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Velikoe Slavoslovie - Serbian Greater Doxology for Male Choir
type: MusicRecording
duration: PT3M56S
duration ms: 236666
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302033
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:01:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x651b42f2ad06b2389597e7df84d192f3c7755b4a0985218289ba668e93979c64
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302033
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 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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b42f2ad06b2389597e7df84d192f3c7755b4a0985218289ba668e93979c64. 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/DEB790302033.
  date published: 2026-07-08T03:20:19Z
audio: Velikoe Slavoslovie - Serbian Greater Doxology for Male Choir
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 121.11
  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: 0.315
  additional property: Energy
    type: PropertyValue
    value: 0.376
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.126
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.128
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.289
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Arkhangelskii glas vopiem (Hymn for the Birth of the Virgin) for Female Choir
type: MusicRecording
duration: PT2M26S
duration ms: 146666
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302034
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:16:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1806bef3afa4fc20c29184639e5bcb5295abf3884448ef5edcc7b7f27dbb1a4a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302034
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1806bef3afa4fc20c29184639e5bcb5295abf3884448ef5edcc7b7f27dbb1a4a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB790302034.
  date published: 2026-07-31T17:29:52Z
audio: Arkhangelskii glas vopiem (Hymn for the Birth of the Virgin) for Female Choir
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 137.82
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.27
  additional property: Energy
    type: PropertyValue
    value: 0.188
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.423
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.101
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.024
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Hymn for the Annunciation for Female Choir: Sovet predvechnyi (Harmony Everlasting)
type: MusicRecording
duration: PT4M48S
duration ms: 288106
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302035
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T02:28:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ff512d6af2c4e2b56d528cf9327b4bab76385064e1c6cdd4ef8fc83f6ec927e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960337
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960337
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302035
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:51:48Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff512d6af2c4e2b56d528cf9327b4bab76385064e1c6cdd4ef8fc83f6ec927e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB790302035.
  date published: 2026-07-31T02:51:48Z
audio: Hymn for the Annunciation for Female Choir: Sovet predvechnyi (Harmony Everlasting)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.852
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.231
  additional property: Energy
    type: PropertyValue
    value: 0.289
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.016
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.725
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Eight-part Hymn for Mixed Choir: Voshel esi vo Tserkov
type: MusicRecording
duration: PT6M5S
duration ms: 365173
explicit: false
by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
  type: MusicAlbum
  date published: 2008-08-19
isrc code: DEB790302045
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T19:27:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5d8a39cb0661372ba0dc4dce95d911e0bfd2979c9b47d96b195ea8656bab973a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB790302045
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T19:53:13Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8a39cb0661372ba0dc4dce95d911e0bfd2979c9b47d96b195ea8656bab973a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEB790302045.
  date published: 2026-07-31T19:53:13Z
audio: Eight-part Hymn for Mixed Choir: Voshel esi vo Tserkov
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 113.936
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
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Chant for Male Choir: Blagosloven esi, Gospodi, Znamenny
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duration: PT2M46S
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by artist: Anonymous
by artist: Lege Artis Chamber Choir
by artist: Boris Abalyan
in album: Ancient Psalms of the Orthodox Church
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Chant for Male Choir: Blagosloven esi, Gospodi, Znamenny
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We Glorify You with Love - Songs to the Virgin Mary
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date published: 2008-08-12
track: Today The Virgin Gives Birth To Him Who Is Above All Being
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T03:15:04Z
  audio: Today The Virgin Gives Birth To Him Who Is Above All Being
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Introducing
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date published: 2003-01-01
track: Die mit Tränen säen
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  duration: PT3M35S
  duration ms: 215915
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  by artist: Lege Artis Chamber Choir
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T06:58:00Z
  audio: Die mit Tränen säen
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track: All Night Vigil, Op. 37 (Excerpt) No.7 Bogoroditse, Devo, raduisya
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  duration: PT2M32S
  duration ms: 152855
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  by artist: Sergei Rachmaninoff
  by artist: Lege Artis Chamber Choir
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  genre: classical
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
  audio: All Night Vigil, Op. 37 (Excerpt) No.7 Bogoroditse, Devo, raduisya
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Russia Liturgical Chants
type: MusicAlbum
date published: 1994-01-01
track: Now the Heavenly Powers Deal Invisibly With Us
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  duration: PT3M22S
  duration ms: 202344
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  by artist: Fjodor Lvovsky
  by artist: Lege Artis Chamber Choir
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-08-01T03:13:03Z
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Domus Silenti
type: MusicAlbum
date published: 2025-12-05

Verbum Lucis pt II
type: MusicAlbum
date published: 2025-11-21

Verbum Lucis
type: MusicAlbum
date published: 2025-11-14

Lux In Cordibus pt II
type: MusicAlbum
date published: 2025-08-22

Lux In Cordibus
type: MusicAlbum
date published: 2025-08-08

Anima Lucis
type: MusicAlbum
date published: 2025-07-11