Chorus Primus
type: MusicGroup
popularity: 2
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69005fb86b40b15b5663c3dbdbae3e7d82d79b5162c03f9fa9bfab471bba8dc9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f51e4782-9088-4d74-8bb9-68267ed24ea7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f51e4782-9088-4d74-8bb9-68267ed24ea7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f51e4782-9088-4d74-8bb9-68267ed24ea7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x69005fb86b40b15b5663c3dbdbae3e7d82d79b5162c03f9fa9bfab471bba8dc9","name":"Chorus Primus","registered_at":"2026-06-21T14:36:48Z","symbol":"NIM1947969","token_address":"0x60984103e44c0395c282d3832f344f73b837dd78","type":"artist","uuid":"f51e4782-9088-4d74-8bb9-68267ed24ea7"}
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 0x69005fb86b40b15b5663c3dbdbae3e7d82d79b5162c03f9fa9bfab471bba8dc9. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f51e4782-9088-4d74-8bb9-68267ed24ea7.json and https://artists.proofprofile.net/proofs/artist/f51e4782-9088-4d74-8bb9-68267ed24ea7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0x69005fb86b40b15b5663c3dbdbae3e7d82d79b5162c03f9fa9bfab471bba8dc9","name":"Chorus Primus","registered_at":"2026-06-21T14:36:48Z","symbol":"NIM1947969","token_address":"0x60984103e44c0395c282d3832f344f73b837dd78","type":"artist","uuid":"f51e4782-9088-4d74-8bb9-68267ed24ea7"}
track: Das Geläut zu Speyer - Live
  type: MusicRecording
  duration: PT1M55S
  duration ms: 115980
  explicit: false
  by artist: Ludwig Senfl
  by artist: Vienna Boys' Choir
  by artist: Chorus Juventus
  by artist: Chorus Viennensis
  by artist: Chorus Primus
  by artist: Wiener Chormädchen
  by artist: Gerald Wirth
  in album: 525 Years Anniversary Concert (Live)
    type: MusicAlbum
    date published: 2023-11-24
  genre: renaissance
  isrc code: ATUM72300446
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T01:54:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3c27c21f56bcb175037568a563139127e3002f8de6011b7bd7d9867be83a3558
  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/ATUM72300446
  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 0x3c27c21f56bcb175037568a563139127e3002f8de6011b7bd7d9867be83a3558. 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/ATUM72300446.
    date published: 2026-07-08T03:20:19Z
  audio: Das Geläut zu Speyer - Live
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 107.914
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.417
    additional property: Energy
      type: PropertyValue
      value: 0.279
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.989
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.001
    additional property: Liveness
      type: PropertyValue
      value: 0.078
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.279
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.916
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Matrosen-Polka, Op. 52 (Arr. Wirth) - Live
  type: MusicRecording
  duration: PT2M23S
  duration ms: 143889
  explicit: false
  by artist: Josef Strauss
  by artist: Vienna Boys' Choir
  by artist: Chorus Primus
  by artist: Wiener Chormädchen
  by artist: Gerald Wirth
  in album: 525 Years Anniversary Concert (Live)
    type: MusicAlbum
    date published: 2023-11-24
  isrc code: ATUM72300455
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T08:37:01+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf174df470f13288459da87fd3d61070869cc94dcafd0a832cbd7be0d95114cd6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960376
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960376
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATUM72300455
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T09:09:19Z
  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 0xf174df470f13288459da87fd3d61070869cc94dcafd0a832cbd7be0d95114cd6. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ATUM72300455.
    date published: 2026-07-31T09:09:19Z
  audio: Matrosen-Polka, Op. 52 (Arr. Wirth) - Live
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 152.052
    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: 0.414
    additional property: Energy
      type: PropertyValue
      value: 0.292
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.85
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Kaiserwalzer, Op. 437 (Arr. Wirth) - Live

Liveness
type: PropertyValue
value: 0.106

Valence (Positivity)
type: PropertyValue
value: 0.699

Loudness (dB)
type: PropertyValue
value: -18.61

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major

Kaiserwalzer, Op. 437 (Arr. Wirth) - Live
type: MusicRecording
duration: PT4M2S
duration ms: 242596
explicit: false
by artist: Johann Strauss II
by artist: Vienna Boys' Choir
by artist: Chorus Primus
by artist: Wiener Chormädchen
by artist: Gerald Wirth
in album: 525 Years Anniversary Concert (Live)
  type: MusicAlbum
  date published: 2023-11-24
isrc code: ATUM72300453
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:24:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20e8a3f0ef4ffbdb4d6039b827b429fcee3d02910cc50d5378b35a463c45830b
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/ATUM72300453
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 0x20e8a3f0ef4ffbdb4d6039b827b429fcee3d02910cc50d5378b35a463c45830b. 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/ATUM72300453.
  date published: 2026-07-08T03:20:19Z
audio: Kaiserwalzer, Op. 437 (Arr. Wirth) - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.105
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.271
  additional property: Energy
    type: PropertyValue
    value: 0.198
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.914
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.227
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Kaiserwalzer, Op. 437 (Arr. Wirth) - Live
type: MusicRecording
duration: PT4M2S
duration ms: 242596
explicit: false
by artist: Johann Strauss II
by artist: Vienna Boys' Choir
by artist: Chorus Primus
by artist: Wiener Chormädchen
by artist: Gerald Wirth
in album: J. Strauss II: Kaiserwalzer, Op. 437 (Arr. Wirth) [Live]
  type: MusicAlbum
  date published: 2023-11-10
isrc code: ATUM72300453
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:24:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x20e8a3f0ef4ffbdb4d6039b827b429fcee3d02910cc50d5378b35a463c45830b
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/ATUM72300453
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 0x20e8a3f0ef4ffbdb4d6039b827b429fcee3d02910cc50d5378b35a463c45830b. 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/ATUM72300453.
  date published: 2026-07-08T03:20:19Z
audio: Kaiserwalzer, Op. 437 (Arr. Wirth) - Live
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.105
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.271
  additional property: Energy
    type: PropertyValue
    value: 0.198
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.914
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.011
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.109
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.227
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major