Roland Roberts
type: MusicGroup
genre: choral
description: Roland Roberts (October 22, 1897 — March 31, 1965) was an American male tennis player. Tennis career In 1918 he became the Pacific Coast lawn tennis champion. In a tournament that lacked most of the
popularity: 3
followers: 2
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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: 2026-06-16T02:12:46Z
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track: Dear Lord and Father of Mankind
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  by artist: Hubert Parry
  by artist: Roland Roberts
  by artist: Choir of King's College, Cambridge
  by artist: Richard Farnes
  by artist: Stephen Cleobury
  in album: Abide With Me - 50 Favourite Hymns
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    date published: 1996-01-01
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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
  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:20:19Z
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track: Dear Lord and Father of Mankind
  type: MusicRecording
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  by artist: Hubert Parry
  by artist: Roland Roberts
  by artist: Choir of King's College, Cambridge
  by artist: Richard Farnes
  by artist: Stephen Cleobury
  in album: The World of Favourite Hymns
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    date published: 1986-01-01
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
  audio: Dear Lord and Father of Mankind
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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