Schweizer Kammerchor
type: MusicGroup
genre: requiem
popularity: 10
followers: 38
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa2adbeac00c002b32de87ceedde1950b467298af3bff2462a4d5444af38f1df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953947
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953947
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21dff25e-c6c2-45aa-8653-b4dcd9098127.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21dff25e-c6c2-45aa-8653-b4dcd9098127.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21dff25e-c6c2-45aa-8653-b4dcd9098127
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T13:14:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2adbeac00c002b32de87ceedde1950b467298af3bff2462a4d5444af38f1df. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21dff25e-c6c2-45aa-8653-b4dcd9098127.json and https://artists.proofprofile.net/proofs/artist/21dff25e-c6c2-45aa-8653-b4dcd9098127.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T13:14:26Z
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album: Jürg Dähler · Viola Concertos / Signatures of Life – LIVE!
  type: MusicAlbum
  date published: 2021
track: Ode an die Freude - die 9. Sinfonie / Europa Hymne (Ode to Joy - Beethoven's Symphony No. 9)
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  duration: PT5M2S
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  by artist: Ludwig van Beethoven
  by artist: David Zinman
  by artist: Ruth Ziesak
  by artist: Birgit Remmert
  by artist: Steve Davislim
  by artist: Detlef Roth
  by artist: Schweizer Kammerchor
  by artist: Tonhalle-Orchester Zürich
  in album: Klassik die man kennen muss! Die größten Werke der Klassischen Musik
    type: MusicAlbum
    date published: 2019-04-26
  popularity: 14
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: DEP621800012
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-19T05:15:05+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x561a857202fc377f6c6e9e434fa1b32789094282b2e1590086650236be00dd7d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP621800012
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0x561a857202fc377f6c6e9e434fa1b32789094282b2e1590086650236be00dd7d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEP621800012 — a six-check JSON result.
    date published: 2026-07-02T03:30:09Z
  audio: Ode an die Freude - die 9. Sinfonie / Europa Hymne (Ode to Joy - Beethoven's Symphony No. 9)
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    additional property: Tempo (BPM)
      type: PropertyValue
      value: 145.514
    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
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      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.016
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -14.005
    additional property: Key Name
      type: PropertyValue
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    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Requiem aeternam
  type: MusicRecording
  duration: PT5M42S
  duration ms: 342493
  explicit: false
  by artist: Michael Haydn
  by artist: Christian Zacharias
  by artist: Johanette Zomer
  by artist: Helena Rasker
  by artist: Markus Schäfer
  by artist: Klaus Mertens
  by artist: Schweizer Kammerchor
  by artist: Orchestre de Chambre de Lausanne
  in album: Michael Haydn: Requiem, Symphonies P9 & 16
    type: MusicAlbum
    date published: 2004-04-01
  isrc code: DEA140424501
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-25T18:27:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2e149c83f164cd3376f8d9db8833369be56426f57291d73c8189d39517fecec0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956304
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA140424501
  additional property: OTSTimestamp
    type: PropertyValue
    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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e149c83f164cd3376f8d9db8833369be56426f57291d73c8189d39517fecec0. 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/DEA140424501 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Requiem aeternam
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 119.148
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.214
    additional property: Energy
    additional property: Speechiness
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Dies Irae
track: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Domine Jesu Christe

Energy
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value: 0.076

Speechiness
type: PropertyValue
value: 0.036

Acousticness
type: PropertyValue
value: 0.952

Instrumentalness
type: PropertyValue
value: 0.779

Liveness
type: PropertyValue
value: 0.109

Valence (Positivity)
type: PropertyValue
value: 0.122

Loudness (dB)
type: PropertyValue
value: -24.794

Key Name
type: PropertyValue
value: C

Mode Name
type: PropertyValue
value: Minor

Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Dies Irae
type: MusicRecording
duration: PT8M2S
duration ms: 482333
explicit: false
by artist: Michael Haydn
by artist: Christian Zacharias
by artist: Johanette Zomer
by artist: Helena Rasker
by artist: Markus Schäfer
by artist: Klaus Mertens
by artist: Schweizer Kammerchor
by artist: Orchestre de Chambre de Lausanne
in album: Michael Haydn: Requiem, Symphonies P9 & 16
  type: MusicAlbum
  date published: 2004-04-01
isrc code: DEA140424502
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T16:00:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ce11fcf897bfb3a4e750a48a62b9077ecc51fa92bc30059d41e2450aadce274
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA140424502
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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 0x1ce11fcf897bfb3a4e750a48a62b9077ecc51fa92bc30059d41e2450aadce274. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA140424502 — a six-check JSON result.
  date published: 2026-07-29T19:35:34Z
audio: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Dies Irae
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 125.23
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0.004
  additional property: Liveness
    type: PropertyValue
    value: 0.087
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.185
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.957
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
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Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Domine Jesu Christe
type: MusicRecording
duration: PT4M24S
duration ms: 264706
explicit: false
by artist: Michael Haydn
by artist: Christian Zacharias
by artist: Johanette Zomer
by artist: Helena Rasker
by artist: Markus Schäfer
by artist: Klaus Mertens
by artist: Schweizer Kammerchor
by artist: Orchestre de Chambre de Lausanne
in album: Michael Haydn: Requiem, Symphonies P9 & 16
  type: MusicAlbum
  date published: 2004-04-01
isrc code: DEA140424503
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T10:36:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x235fafbe574240918e9dc816f0ee7afba0ed8a7d33c460fce1d8db558dcbc1b5
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA140424503
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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 0x235fafbe574240918e9dc816f0ee7afba0ed8a7d33c460fce1d8db558dcbc1b5. 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/DEA140424503 — a six-check JSON result.
  date published: 2026-07-07T18:39:05Z
audio: Missa pro defuncto Archiepiscopo Sigismundo, MH 154: Domine Jesu Christe
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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  additional property: Valence (Positivity)
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