John Cameron/Glyndebourne Chorus/Peter Gellhorn/Pro Arte Orchestra/Sir Malcolm Sargent
type: MusicGroup
popularity: 3
followers: 17
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8eaf90fc-7fa5-4c0b-95b5-23d79ea3fbb0.json
additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fa3c297dc6fdd6f5844e115b571576b420c082411b6ef6801d0553d8c6d230. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8eaf90fc-7fa5-4c0b-95b5-23d79ea3fbb0.json and https://artists.proofprofile.net/proofs/artist/8eaf90fc-7fa5-4c0b-95b5-23d79ea3fbb0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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track: HMS Pinafore (or, The Lass that Loved a Sailor), Act I: I am the captain of the Pinafore (Captain Corcoran, Sailors)
  type: MusicRecording
  duration: PT1M58S
  duration ms: 118040
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  by artist: Arthur Sullivan
  by artist: John Cameron/Glyndebourne Chorus/Peter Gellhorn/Pro Arte Orchestra/Sir Malcolm Sargent
  by artist: Sir Malcolm Sargent
  by artist: Pro Arte Orchestra
  in album: Essential Gilbert & Sullivan
    type: MusicAlbum
    date published: 2012-06-04
  genre: late-romantic-era
  genre: victorian-britain
  genre: operetta
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  additional property: OTSVerificationAPI
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYD8700143
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe768587b9f7b0bc7666cf26eb532fc323d6b8e1cf65442be73a3a3f7ba7ea4e3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBAYD8700143.
    date published: 2026-07-29T13:09:35Z
  audio: HMS Pinafore (or, The Lass that Loved a Sailor), Act I: I am the captain of the Pinafore (Captain Corcoran, Sailors)
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    additional property: Speechiness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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    additional property: Key Name
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    additional property: Mode Name
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