Freiburg Cathedral Boy's Choir
type: MusicGroup
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x222bfd1c576ae0b0e037739169ab8d4203dcdbec4736c1f0df512f663c17e263
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2642016-d065-4f6e-ae3e-88a6c68a137e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f2642016-d065-4f6e-ae3e-88a6c68a137e.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f2642016-d065-4f6e-ae3e-88a6c68a137e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x222bfd1c576ae0b0e037739169ab8d4203dcdbec4736c1f0df512f663c17e263","name":"Freiburg Cathedral Boy's Choir","registered_at":"2026-06-21T13:33:43Z","symbol":"NIM1936706","token_address":"0x89cca1a16c92fd3eb95a3aff83fbfd0dd476ac83","type":"artist","uuid":"f2642016-d065-4f6e-ae3e-88a6c68a137e"}
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 0x222bfd1c576ae0b0e037739169ab8d4203dcdbec4736c1f0df512f663c17e263. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2642016-d065-4f6e-ae3e-88a6c68a137e.json and https://artists.proofprofile.net/proofs/artist/f2642016-d065-4f6e-ae3e-88a6c68a137e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x222bfd1c576ae0b0e037739169ab8d4203dcdbec4736c1f0df512f663c17e263","name":"Freiburg Cathedral Boy's Choir","registered_at":"2026-06-21T13:33:43Z","symbol":"NIM1936706","token_address":"0x89cca1a16c92fd3eb95a3aff83fbfd0dd476ac83","type":"artist","uuid":"f2642016-d065-4f6e-ae3e-88a6c68a137e"}
album: Albrechtsberger, J.G. / Haydn, M.: Masses
  type: MusicAlbum
  date published: 2010-01-26
album: Hochfeste im Kirchenjahr
  type: MusicAlbum
  date published: 2011-02-01
track: Symphony No. 3 in D Minor: I. Kräftig. Entschieden
  type: MusicRecording
  duration: PT35M26S
  duration ms: 2126426
  explicit: false
  by artist: Gustav Mahler
  by artist: Franck Pulcini
  by artist: Europe Choir Academy
  by artist: Freiburg Cathedral Boy's Choir
  by artist: SWR Symphony Orchestra
  by artist: Michael Gielen
  in album: Michael Gielen Edition, Vol. 6: Mahler Symphonies & Orchestral Song Cycles (Recorded 1988-2014)
    type: MusicAlbum
    date published: 2017-09-08
  genre: classical
  genre: orchestra
  isrc code: DEA559704544
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T14:41:45+00:00
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    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x429ab0a8a540494bb1cfc85c20e570f18d4ceb7e671acc8bc4486b64230768da
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960418
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960418
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA559704544
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:20:15Z
  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 0x429ab0a8a540494bb1cfc85c20e570f18d4ceb7e671acc8bc4486b64230768da. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEA559704544.
    date published: 2026-07-31T15:20:15Z
  audio: Symphony No. 3 in D Minor: I. Kräftig. Entschieden
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 129.285
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.242
    additional property: Energy
      type: PropertyValue
      value: 0.091
    additional property: Speechiness
      type: PropertyValue
      value: 0.043
    additional property: Acousticness
      type: PropertyValue
      value: 0.908
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.641
    additional property: Liveness
      type: PropertyValue
      value: 0.071
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.06
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.164
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Symphony No. 3 in D Minor: VI. Langsam. Ruhevoll. Empfunden
  type: MusicRecording
  duration: PT24M27S
  duration ms: 1467906
  explicit: false
  by artist: Gustav Mahler
  by artist: Franck Pulcini
  by artist: Europe Choir Academy
  by artist: Freiburg Cathedral Boy's Choir
  by artist: SWR Symphony Orchestra
  by artist: Michael Gielen
  in album: Michael Gielen Edition, Vol. 6: Mahler Symphonies & Orchestral Song Cycles (Recorded 1988-2014)
    type: MusicAlbum
    date published: 2017-09-08
  genre: classical
  genre: orchestra
  isrc code: DEA559704549
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T15:30:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x960880d3897123ffd89fe0075aa56abee53c9057e2a810a796a94bc593f64b51
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA559704549
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960880d3897123ffd89fe0075aa56abee53c9057e2a810a796a94bc593f64b51. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEA559704549.
    date published: 2026-07-08T03:22:41Z
  audio: Symphony No. 3 in D Minor: VI. Langsam. Ruhevoll. Empfunden
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 106.229
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.08
    additional property: Energy
      type: PropertyValue
      value: 0.037
    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

Speechiness
type: PropertyValue
value: 0.04

Acousticness
type: PropertyValue
value: 0.908

Instrumentalness
type: PropertyValue
value: 0.855

Liveness
type: PropertyValue
value: 0.059

Valence (Positivity)
type: PropertyValue
value: 0.033

Loudness (dB)
type: PropertyValue
value: -24.604

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major