Diethard Hellmann
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description: thumb|Christuskirche, Mainz, view from the west Diethard Hellmann (28 December 1928 – 14 October 1999) was a German Kantor, composer and academic teacher, first in Leipzig at the Friedenskirche and th
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followers: 9
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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: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
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  date published: 2005-01-01
album: Classical Music for the Christmas Holiday, Vol. 1
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  track: The Nutcracker, Op. 71: Danse de la fee (Dance of the Sugar Plum Fairy)
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-29T19:35:34Z
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album: Thomanerchor / Gewandhausorchester Leipzig / Thomaskantor Günther Ramin spielen: Johann Sebastian Bach: Kantate "Ich hatte viel Bekümmernis", BWV 21
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album: 400 Jahre Marianische Männerkongregation - Festmusik in der Bürgersaalkirche München
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album: Bach: Cantates, BWV 187 & 34 (Mono Version)
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track: Oratorio de Noel, Op. 12: Tollite hostias (Chorus)
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  subject of: OpenTimestamps Proof of Existence
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track: Oratorio de Noel, Op. 12: Prelude (In the Style of Seb. Bach)
track: Oratorio de Noel, Op. 12: Duet: Benedictus qui venit (Soprano, Basso)
track: Oratorio de Noel, Op. 12: Recitative and Chorus: Et Pastores erant - Gloria (Chorus)
track: Oratorio de Noel, Op. 12: Quare fremuerunt gentes (Chorus)
track: Oratorio de Noel, Op. 12: Air: Expectants expectavi Dominum (Soprano)
track: Oratorio de Noel, Op. 12: Air: Domine, ego credidi (Tenor, Chorus)
track: Oratorio de Noel, Op. 12: Trio: Tecum principium (Soprano, Tenor, Basso)
track: Oratorio de Noel, Op. 12: Quartet: Alleluja (Soprano, Soprano, Alto, Basso)
track: Oratorio de Noel, Op. 12: Quintet and Chorus: Consurge, Filia Sion (Soprano, Soprano, Alto, Basso, Chorus)

OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9e0cfcdb739e71710ec6ecf02b5d00610e9f73840f858d2fab178e8a1e8c10. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEAD60502310.
date published: 2026-07-22T12:33:25Z

Oratorio de Noel, Op. 12: Tollite hostias (Chorus)
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Oratorio de Noel, Op. 12: Prelude (In the Style of Seb. Bach)
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popularity: 7
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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
audio: Oratorio de Noel, Op. 12: Prelude (In the Style of Seb. Bach)
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Oratorio de Noel, Op. 12: Duet: Benedictus qui venit (Soprano, Basso)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Oratorio de Noel, Op. 12: Recitative and Chorus: Et Pastores erant - Gloria (Chorus)
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genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T19:42:40Z
audio: Oratorio de Noel, Op. 12: Recitative and Chorus: Et Pastores erant - Gloria (Chorus)
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Oratorio de Noel, Op. 12: Quare fremuerunt gentes (Chorus)
type: MusicRecording
duration: PT3M59S
duration ms: 239933
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 4
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502306
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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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  date published: 2026-07-30T01:10:20Z
audio: Oratorio de Noel, Op. 12: Quare fremuerunt gentes (Chorus)
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Oratorio de Noel, Op. 12: Air: Expectants expectavi Dominum (Soprano)
type: MusicRecording
duration: PT4M8S
duration ms: 248466
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502303
additional property: CopyrightID
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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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  date published: 2026-07-31T12:24:41Z
audio: Oratorio de Noel, Op. 12: Air: Expectants expectavi Dominum (Soprano)
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Oratorio de Noel, Op. 12: Air: Domine, ego credidi (Tenor, Chorus)
type: MusicRecording
duration: PT4M1S
duration ms: 241760
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502304
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60502304
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
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: 2026-07-31T02:19:15Z
audio: Oratorio de Noel, Op. 12: Air: Domine, ego credidi (Tenor, Chorus)
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Oratorio de Noel, Op. 12: Trio: Tecum principium (Soprano, Tenor, Basso)
type: MusicRecording
duration: PT4M23S
duration ms: 263933
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502307
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
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960349
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60502307
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: 2026-07-31T05:23:41Z
audio: Oratorio de Noel, Op. 12: Trio: Tecum principium (Soprano, Tenor, Basso)
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Oratorio de Noel, Op. 12: Quartet: Alleluja (Soprano, Soprano, Alto, Basso)
type: MusicRecording
duration: PT2M14S
duration ms: 134600
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502308
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
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960368
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60502308
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 0xa42ea3e93425d926baa2f62b2d61f45876a606f9d2186f1c08392a8a24b7edf9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEAD60502308.
  date published: 2026-07-31T08:26:41Z
audio: Oratorio de Noel, Op. 12: Quartet: Alleluja (Soprano, Soprano, Alto, Basso)
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Oratorio de Noel, Op. 12: Quintet and Chorus: Consurge, Filia Sion (Soprano, Soprano, Alto, Basso, Chorus)
type: MusicRecording
duration: PT5M29S
duration ms: 329226
explicit: false
by artist: Camille Saint-Saëns
by artist: Verena Schweizer
by artist: Edith Wiens
by artist: Helena Jungwirth
by artist: Friedreich Melzer
by artist: Kurt Widmer
by artist: Hans-Joachim Bartsch
by artist: Barbara Biermann
by artist: Mainz Bach Choir
by artist: Mainz Bach Orchestra
by artist: Diethard Hellmann
in album: Saint-Saens: Oratorio De Noel (Christmas Oratorio), Op. 12
  type: MusicAlbum
  date published: 2005-01-01
popularity: 3
genre: classical
genre: late-romantic-era
genre: french-romanticism
isrc code: DEAD60502309
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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  value: 2026-07-31T01:36:22+00:00
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAD60502309
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
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 0x03d9ab36b912ac867e7b9b50cc025dec9bd0b92b97a2c1202256609a9e588934. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAD60502309.
  date published: 2026-07-31T02:19:15Z
audio: Oratorio de Noel, Op. 12: Quintet and Chorus: Consurge, Filia Sion (Soprano, Soprano, Alto, Basso, Chorus)
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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