David Baldwin
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description: David Baldwin may refer to: David Baldwin ( 1830s–1870s), American inventor; owner of David Baldwin House, Midland Park, New Jersey David Dwight Baldwin (1831–1912), Hawaiian businessman, educator, an
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followers: 64
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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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  date published: 2026-06-20T11:51:30Z
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album: Mind over Music: A Guide to Music Licensing
  type: MusicAlbum
  date published: 2021-06-27
album: Punk Rock, Vol. 2
  type: MusicAlbum
  date published: 2022-09-07
album: Punk Rock
  type: MusicAlbum
  date published: 2022-09-07
track: Suite No. 3 in D Major, BWV 1068: II. Air
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  by artist: Johann Sebastian Bach
  by artist: David Baldwin
  by artist: Summit Hill Brass Quintet
  in album: Relaxing Children's Classical
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    date published: 2021-09-15
  popularity: 12
  genre: classical
  genre: classical-piano
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
  audio: Suite No. 3 in D Major, BWV 1068: II. Air
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track: Psalmen Davids sampt etlichen Moteten und Concerten, Op. 21, SWV 22-47: Herr, unser Herrscher, SWV 27, "Psalm 8" (arr. D. Baldwin)
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  by artist: Heinrich Schütz
  by artist: David Baldwin
  by artist: The Bay Brass
  by artist: John Fenstermaker
  by artist: David Krehbiel
  in album: A Brass Organ Christmas in Grace Cathedral
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    date published: 2010-08-01
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T18:48:12Z
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track: Messiah, HWV 56, Part II: Hallelujah Chorus (arr, D. Baldwin)

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Messiah, HWV 56, Part II: Hallelujah Chorus (arr, D. Baldwin)
type: MusicRecording
duration: PT3M52S
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by artist: George Frideric Handel
by artist: David Baldwin
by artist: The Bay Brass
by artist: John Fenstermaker
by artist: David Krehbiel
in album: A Brass Organ Christmas in Grace Cathedral
  type: MusicAlbum
  date published: 2010-08-01
genre: classical
genre: opera
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
genre: choral
isrc code: USG3E0012012
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
audio: Messiah, HWV 56, Part II: Hallelujah Chorus (arr, D. Baldwin)
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