Zurich Chamber Singers
type: MusicGroup
genre: choral
popularity: 14
followers: 435
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x46f0eba3bd116b91e5ebe543d818e154b31562ae2c39b8b5546308132dcf6096
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953754
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953754
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/add312b4-d665-4901-b12a-bebe23f66d08.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/add312b4-d665-4901-b12a-bebe23f66d08.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/add312b4-d665-4901-b12a-bebe23f66d08
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:45:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x46f0eba3bd116b91e5ebe543d818e154b31562ae2c39b8b5546308132dcf6096","name":"Zurich Chamber Singers","registered_at":"2026-06-14T22:50:51Z","symbol":"NIM0601477","token_address":"0x0c017c7d30f55f9cd3c8306ad8b729c39d5de38b","type":"artist","uuid":"add312b4-d665-4901-b12a-bebe23f66d08"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f0eba3bd116b91e5ebe543d818e154b31562ae2c39b8b5546308132dcf6096. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/add312b4-d665-4901-b12a-bebe23f66d08.json and https://artists.proofprofile.net/proofs/artist/add312b4-d665-4901-b12a-bebe23f66d08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:45:19Z
  text: {"copyright_id":"0x46f0eba3bd116b91e5ebe543d818e154b31562ae2c39b8b5546308132dcf6096","name":"Zurich Chamber Singers","registered_at":"2026-06-14T22:50:51Z","symbol":"NIM0601477","token_address":"0x0c017c7d30f55f9cd3c8306ad8b729c39d5de38b","type":"artist","uuid":"add312b4-d665-4901-b12a-bebe23f66d08"}
album: Passio
  type: MusicAlbum
  date published: 2018-05-18
album: Passio
  type: MusicAlbum
  date published: 2018-05-18
album: O Nata Lux
  type: MusicAlbum
  date published: 2020-11-13
  track: O nata lux
    type: MusicRecording
    duration: PT5M38S
    duration ms: 338000
    explicit: false
    by artist: Zurich Chamber Singers
    in album: O Nata Lux
      type: MusicAlbum
      date published: 2020-11-13
    genre: choral
    isrc code: DES382052005
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T23:22:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x31635099e5f8995241e8f060933c07b15682ed113bcdb6e08972c463c0e810d0
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382052005
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31635099e5f8995241e8f060933c07b15682ed113bcdb6e08972c463c0e810d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DES382052005.
      date published: 2026-07-04T10:04:33Z
    audio: O nata lux
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.494
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.17
      additional property: Energy
        type: PropertyValue
        value: 0.074
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.984
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.693
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.029
      additional property: Loudness (dB)
        type: PropertyValue
        value: -22.662
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: O nuit brillante
    type: MusicRecording
    duration: PT4M15S
    duration ms: 255880
    explicit: false
    by artist: Zurich Chamber Singers
    in album: O Nata Lux
      type: MusicAlbum
      date published: 2020-11-13
    genre: choral
    isrc code: DES382052007
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: CopyrightRegisteredAt
      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957867
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES382052007
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T14:55:20Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bdd16188b9f0525154c2db2e3177b1770588d931f4770de19ef0a739ea8372. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/DES382052007.
      date published: 2026-07-13T14:55:20Z
    audio: O nuit brillante
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.88
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.187
      additional property: Energy
        type: PropertyValue
        value: 0.071
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.98
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.304
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Palestrina: Jesu, rex admirabilis
album: Bruckner Spectrum

Liveness
type: PropertyValue
value: 0.097

Valence (Positivity)
type: PropertyValue
value: 0.062

Loudness (dB)
type: PropertyValue
value: -23.814

Key Name
type: PropertyValue
value: B

Mode Name
type: PropertyValue
value: Minor

Palestrina: Jesu, rex admirabilis
type: MusicAlbum
date published: 2022-08-26

Bruckner Spectrum
type: MusicAlbum
date published: 2022-10-07