Capella Antiqua München
type: MusicGroup
genre: choral
genre: gregorian chant
genre: medieval
popularity: 17
followers: 1141
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T12:47:11Z
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album: Isaac: Missa super "O praeclara", Motets & Songs
  type: MusicAlbum
  date published: 1969-01-01
track: Ut queant laxis (Hymn to St. John the Baptist)

Ut queant laxis (Hymn to St. John the Baptist)
type: MusicRecording
duration: PT0M38S
duration ms: 38466
explicit: false
by artist: Traditional
by artist: Konrad Ruhland
by artist: Capella Antiqua München
by artist: Choralschola
in album: NPR Milestones of the Millennium: CHANT - Hymns and Sequences - Gloria in excelsis Deo
  type: MusicAlbum
  date published: 1980
popularity: 3
genre: bhajan
genre: gregorian-chant
genre: medieval
genre: traditional-music
isrc code: USSM17800124
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c75daef944e1968a2315336a52703ff1f425f5d84fead2649a49e0aa31c327. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM17800124.
  date published: 2026-07-06T06:56:49Z
audio: Ut queant laxis (Hymn to St. John the Baptist)
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  additional property: Key Name
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