Arthur Henry Mann
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description: thumb|right|Arthur Henry Mann thumb|right|Dr A.H. Mann with his choir, Dr. Arthur Henry Mann (16 May 1850 – 19 November 1929), known affectionately as "Daddy Mann", was an English organist, choirmast
popularity: 13
followers: 106
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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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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  date published: 2026-06-14T13:03:42Z
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track: Hymn: Once in Royal David's City
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  by artist: Henry John Gauntlett
  by artist: Arthur Henry Mann
  by artist: Choir of King's College, Cambridge
  by artist: Stephen Cleobury
  by artist: George Wimpeney
  in album: Nine Lessons & Carols
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    date published: 2012
  popularity: 2
  genre: anglican-liturgy
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  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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    date published: 2026-07-30T18:23:33Z
  audio: Hymn: Once in Royal David's City
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track: Once In Royal David's City (Desc. by Stephen Cleobury)
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  by artist: Arthur Henry Mann
  by artist: Choir of King's College, Cambridge
  by artist: Stephen Cleobury
  by artist: Adam Banwell
  by artist: Douglas Tang
  in album: Traditional Christmas Carols from King's
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    date published: 2022-12-09
  genre: anglican-liturgy
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  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
    type: DigitalDocument
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    date published: 2026-07-29T11:07:37Z
  audio: Once In Royal David's City (Desc. by Stephen Cleobury)
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track: Once In Royal David's City (Desc. Stephen Cleobury)
track: Once in Royal David's City - Arr. Nick Ashby
track: Once in Royal David's City (arr. A.H. Mann and D. Willcocks for choir and organ)
track: Once In Royal David’s City (Desc. by Philip Ledger)
track: Psalm 89 "My Song Shall Be Always of the Loving Kindness"
track: 主よ、おわりまで(讃美歌 第338番)

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Once In Royal David's City (Desc. Stephen Cleobury)
type: MusicRecording
duration: PT4M38S
duration ms: 278453
explicit: false
by artist: Henry John Gauntlett
by artist: Arthur Henry Mann
by artist: Choir of King's College, Cambridge
by artist: Adam Banwell
by artist: Stephen Cleobury
by artist: Douglas Tang
in album: Christmas Carols by King's College Choir
  type: MusicAlbum
  date published: 2019-12-13
genre: anglican-liturgy
isrc code: GBMY51905609
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSTimestamp
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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 0xf6dd9b4d015d8966ef30937bdd41de6b28cbf873fe1fc5037daacfc6cf4017f4. 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/GBMY51905609.
  date published: 2026-06-13T13:32:09Z
audio: Once In Royal David's City (Desc. Stephen Cleobury)
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Once in Royal David's City - Arr. Nick Ashby
type: MusicRecording
duration: PT3M9S
duration ms: 189120
explicit: false
by artist: Henry John Gauntlett
by artist: Arthur Henry Mann
by artist: The King's Singers
in album: Christmas Carols with The King's Singers
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  date published: 2021-10-22
genre: anglican-liturgy
isrc code: GBLLH2168312
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSHash
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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 0xdd22c42d999827c993d33a70af8771041bea8f71cc69b70dd44a4e5ec2799183. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBLLH2168312.
  date published: 2026-07-31T02:51:48Z
audio: Once in Royal David's City - Arr. Nick Ashby
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Once in Royal David's City (arr. A.H. Mann and D. Willcocks for choir and organ)
type: MusicRecording
duration: PT3M48S
duration ms: 228266
explicit: false
by artist: Sir David Willcocks
by artist: Henry John Gauntlett
by artist: Arthur Henry Mann
by artist: Elora Festival Singers
by artist: Michael Bloss
by artist: Noel Edison
in album: The Wonder of Christmas
  type: MusicAlbum
  date published: 2014-11-04
genre: choral
genre: christmas
isrc code: HKI191416601
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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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
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74278e630df5ae355e24dd28131d138f6de622b130a131a1d445e5380a76dea3. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/HKI191416601.
  date published: 2026-07-30T17:26:40Z
audio: Once in Royal David's City (arr. A.H. Mann and D. Willcocks for choir and organ)
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Once In Royal David’s City (Desc. by Philip Ledger)
type: MusicRecording
duration: PT4M38S
duration ms: 278453
explicit: false
by artist: Henry John Gauntlett
by artist: Arthur Henry Mann
by artist: Choir of King's College, Cambridge
by artist: Stephen Cleobury
by artist: Adam Banwell
by artist: Douglas Tang
in album: Favourite Carols from King's
  type: MusicAlbum
  date published: 2014-10-27
genre: anglican-liturgy
isrc code: GBMY51400701
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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 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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Psalm 89 "My Song Shall Be Always of the Loving Kindness"
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主よ、おわりまで(讃美歌 第338番)
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