Edmund Lyndeck
type: MusicGroup
genre: musicals
description: Edmund Lyndeck (October 4, 1925 – December 14, 2015) was an American actor and musical theatre performer. He is best known for originating the roles of Judge Turpin in Sweeney Todd: The Demon Barber o
popularity: 18
followers: 211
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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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track: Pretty Women from "Sweeney Todd"
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  by artist: Stephen Sondheim
  by artist: Len Cariou
  by artist: Victor Garber
  by artist: Edmund Lyndeck
  by artist: Paul Gemignani
  by artist: Original Broadway Cast Orchestra
  in album: The Essential Stephen Sondheim
    type: MusicAlbum
    date published: 2016-02-26
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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: 2026-07-30T07:48:45Z
  audio: Pretty Women from "Sweeney Todd"
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track: Johanna - Mea Culpa
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  by artist: Stephen Sondheim
  by artist: Edmund Lyndeck
  by artist: Original Broadway Cast of Sweeney Todd: The Demon Barber of Fleet Street
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T13:32:09Z
  audio: Johanna - Mea Culpa
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track: Ladies in Their Sensitivities
track: Pretty Women
track: Final Sequence

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Ladies in Their Sensitivities
type: MusicRecording
duration: PT3M57S
duration ms: 237720
explicit: false
by artist: Stephen Sondheim
by artist: Edmund Lyndeck
by artist: Jack Eric Williams
by artist: Original Broadway Cast of Sweeney Todd: The Demon Barber of Fleet Street
by artist: Paul Gemignani
in album: Sweeney Todd: The Demon Barber of Fleet Street (Original Broadway Cast Recording)
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  date published: 1979
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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: 2026-06-13T15:41:10Z
audio: Ladies in Their Sensitivities
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Pretty Women
type: MusicRecording
duration: PT4M38S
duration ms: 278906
explicit: false
by artist: Stephen Sondheim
by artist: Len Cariou
by artist: Victor Garber
by artist: Edmund Lyndeck
by artist: Original Broadway Cast of Sweeney Todd: The Demon Barber of Fleet Street
by artist: Paul Gemignani
in album: Sweeney Todd: The Demon Barber of Fleet Street (Original Broadway Cast Recording)
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  date published: 1979
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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: 2026-06-13T13:32:09Z
audio: Pretty Women
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Final Sequence
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duration: PT13M22S
duration ms: 802573
explicit: false
by artist: Stephen Sondheim
by artist: Victor Garber
by artist: Merle Louise
by artist: Len Cariou
by artist: Edmund Lyndeck
by artist: Angela Lansbury
by artist: Sarah Rice
by artist: Ken Jennings
by artist: Original Broadway Cast of Sweeney Todd: The Demon Barber of Fleet Street
by artist: Paul Gemignani
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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: 2026-06-13T13:32:09Z
audio: Final Sequence
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