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type: MusicGroup
genre: choral
genre: requiem
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followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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track: Stabat mater dolorosa
track: Stabat Mater, Op. 58, B. 71: Eia, mater
track: Stabat Mater, Op. 58, B. 71: Fac ut ardeat cor meum
track: Stabat Mater, Op. 58, B. 71: Virgo virginum praeclara
track: Stabat Mater, Op. 58, B. 71: Quis est homo?
track: Stabat Mater, Op. 58, B. 71: Tui nati vulnerati

Stabat mater dolorosa
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by artist: Antonín Dvořák
by artist: Christine Brewer
by artist: Marietta Simpson
by artist: John Aler
by artist: Ding Gao
by artist: The Washington Chorus
by artist: Washington Orchestra
by artist: Robert Shafer
in album: Dvorak: Stabat Mater / Psalm 149
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  date published: 2002-08-12
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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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: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Stabat mater dolorosa
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Stabat Mater, Op. 58, B. 71: Eia, mater
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by artist: Antonín Dvořák
by artist: Christine Brewer
by artist: Marietta Simpson
by artist: John Aler
by artist: Ding Gao
by artist: The Washington Chorus
by artist: Washington Orchestra
by artist: Robert Shafer
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genre: classical
genre: late-romantic-era
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additional property: OTSVerifyInstructions
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Stabat Mater, Op. 58, B. 71: Eia, mater
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Stabat Mater, Op. 58, B. 71: Fac ut ardeat cor meum
type: MusicRecording
duration: PT8M23S
duration ms: 503533
explicit: false
by artist: Antonín Dvořák
by artist: Christine Brewer
by artist: Marietta Simpson
by artist: John Aler
by artist: Ding Gao
by artist: The Washington Chorus
by artist: Washington Orchestra
by artist: Robert Shafer
in album: Dvorak: Stabat Mater / Psalm 149
  type: MusicAlbum
  date published: 2002-08-12
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: HKI190114904
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additional property: CopyrightStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Stabat Mater, Op. 58, B. 71: Fac ut ardeat cor meum
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Stabat Mater, Op. 58, B. 71: Virgo virginum praeclara
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explicit: false
by artist: Antonín Dvořák
by artist: Christine Brewer
by artist: Marietta Simpson
by artist: John Aler
by artist: Ding Gao
by artist: The Washington Chorus
by artist: Washington Orchestra
by artist: Robert Shafer
in album: Dvorak: Stabat Mater / Psalm 149
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  date published: 2002-08-12
genre: classical
genre: late-romantic-era
genre: czech-classical
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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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  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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  date published: 2026-07-08T08:56:20Z
audio: Stabat Mater, Op. 58, B. 71: Virgo virginum praeclara
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Stabat Mater, Op. 58, B. 71: Quis est homo?
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by artist: Antonín Dvořák
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by artist: Ding Gao
by artist: The Washington Chorus
by artist: Washington Orchestra
by artist: Robert Shafer
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genre: classical
genre: late-romantic-era
genre: czech-classical
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:13Z
audio: Stabat Mater, Op. 58, B. 71: Quis est homo?
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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

Stabat Mater, Op. 58, B. 71: Tui nati vulnerati
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genre: classical
genre: late-romantic-era
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea9a6a7253cc597b4414bd1691da10eba120684a0ba21de3c55210f379427fb. 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/HKI190114905.
  date published: 2026-07-31T17:29:52Z
audio: Stabat Mater, Op. 58, B. 71: Tui nati vulnerati
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.899
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.092
  additional property: Energy
    type: PropertyValue
    value: 0.046
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.13
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.325
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: HKI190114905
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960441
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T17:29:52+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190114905
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: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch