Prague Philharmonic Chorus
type: MusicGroup
genre: choral
genre: requiem
popularity: 10
followers: 136
additional property: CopyrightID
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/953968
additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerifyInstructions
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9085b8741b99cf7b26a00d3458b1cebcca9e05cf50a4be95ef9ea675ec83a5e. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28e1ff55-6fcc-4e35-a36e-90c7217e896f.json and https://artists.proofprofile.net/proofs/artist/28e1ff55-6fcc-4e35-a36e-90c7217e896f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
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album: Dvořák: Stabat Mater & Psalm 149
  type: MusicAlbum
  date published: 1991-08-01
track: 歓喜の歌〜交響曲第9番合唱《合唱》第4楽章 (部分)
  type: MusicRecording
  duration: PT11M35S
  duration ms: 695093
  explicit: false
  by artist: Ludwig van Beethoven
  by artist: Václav Neumann
  by artist: Czech Philharmonic Chamber Orchestra
  by artist: Prague Philharmonic Chorus
  by artist: ガブリエラ・ベニャチコヴァー
  by artist: アンネ・イェヴァン
  by artist: ギュンター・ノイマン
  by artist: アルトゥール・コルン
  by artist: ルボミール・マートル
  in album: クラシック人気ベスト30
    type: MusicAlbum
    date published: 2020-08-19
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953520
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO08922650
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5af30ac1598cc656f0459b1fc7c11724820cde5ba946b278c3e0549eed80e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO08922650.
    date published: 2026-06-13T13:32:09Z
  audio: 歓喜の歌〜交響曲第9番合唱《合唱》第4楽章 (部分)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 151.829
    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: 0.23
    additional property: Energy
      type: PropertyValue
      value: 0.335
    additional property: Speechiness
      type: PropertyValue
      value: 0.048
    additional property: Acousticness
      type: PropertyValue
      value: 0.963
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.203
    additional property: Liveness
      type: PropertyValue
      value: 0.667
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.04
    additional property: Loudness (dB)
      type: PropertyValue
      value: -19.17
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major