Johann Michael Bach
type: MusicGroup
genre: choral
description: thumb|200px|Memorial of Johann Michael Bach in Gehren. Johann Michael Bach (baptised , Arnstadt, Schwarzburg-Sondershausen – , Gehren) was a German composer of the Baroque period. He was the brother
popularity: 17
followers: 1058
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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
subject of: OpenTimestamps Proof of Existence
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album: J.M. Bach: Cantatas
  type: MusicAlbum
  date published: 2000-11-20
album: J.M. Bach: Cantatas
  type: MusicAlbum
  date published: 2000-11-20
album: Bach, J.M.: Collected Organ Chorales
  type: MusicAlbum
  date published: 2001-01-01
album: Bach, J.M.: Collected Organ Chorales
  type: MusicAlbum
  date published: 2001-01-01
album: In Dulci Jubilo
  type: MusicAlbum
  date published: 2019-12-10
album: In dulci jubilo, BWV 751
  type: MusicAlbum
  date published: 2021-01-26
album: In dulci jubilo
  type: MusicAlbum
  date published: 2021-12-21
album: Johann Michael Bach: Herr, ich warte auf dein Heil
  type: MusicAlbum
  date published: 2022-05-27
track: Ach bleib bei uns, Herr Jesu Christ
track: Herr, der König freuet sich

Ach bleib bei uns, Herr Jesu Christ
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duration: PT6M23S
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by artist: Johann Michael Bach
by artist: Vox Luminis
by artist: Lionel Meunier
by artist: Zsuzsi Tóth
by artist: Daniel Elgersma
by artist: Philippe Froeliger
in album: Kantaten
  type: MusicAlbum
  date published: 2019-06-14
popularity: 7
isrc code: BER181840101
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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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  date published: 2026-07-02T05:09:12Z
audio: Ach bleib bei uns, Herr Jesu Christ
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Herr, der König freuet sich
type: MusicRecording
duration: PT5M39S
duration ms: 339586
explicit: false
by artist: Johann Michael Bach
by artist: Vox Luminis
by artist: Lionel Meunier
in album: Kantaten
  type: MusicAlbum
  date published: 2019-06-14
popularity: 3
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T14:28:24Z
audio: Herr, der König freuet sich
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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 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