Christopher Cock
type: MusicGroup
genre: choral
description: thumb|right|160px|Microscope manufactured by Christopher Cock of London for Robert Hooke. Hooke is believed to have used this microscope for the observations that formed the basis of Micrographia. (M-
popularity: 4
followers: 2
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299d21736a0f417c4a5d6e44b83c3de50e65d660800935125cfa977e584e57bf. 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/8b2a69f7-b350-4ddf-9b4b-9f66eaa04ab4.json and https://artists.proofprofile.net/proofs/artist/8b2a69f7-b350-4ddf-9b4b-9f66eaa04ab4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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track: Mary Had a Baby
  type: MusicRecording
  duration: PT2M18S
  duration ms: 138666
  explicit: false
  by artist: Traditional
  by artist: Robert Shaw
  by artist: Robert Shaw Chamber Singers
  by artist: Christopher Cock
  in album: Choral Christmas
    type: MusicAlbum
    date published: 2024-11-27
  genre: bhajan
  genre: gregorian-chant
  genre: medieval
  genre: traditional-music
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T19:35:34Z
  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 0x1929b857b476325358e1a98f5a2900c44c97392507f25829059df75112a83e98. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USTE10316377.
    date published: 2026-07-29T19:35:34Z
  audio: Mary Had a Baby
    type: AudioObject
    additional property: Tempo (BPM)
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      type: PropertyValue
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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      value: 0.975
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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      value: 0.112
    additional property: Loudness (dB)
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      value: -35.173
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: What Child Is This?
  type: MusicRecording
  duration: PT3M10S
  duration ms: 190400
  explicit: false
  by artist: Traditional
  by artist: Robert Shaw
  by artist: Robert Shaw Chamber Singers
  by artist: Christopher Cock
  by artist: Victor Ledbetter
  in album: Choral Christmas
    type: MusicAlbum
    date published: 2024-11-27
  genre: bhajan
  genre: gregorian-chant
  genre: medieval
  genre: traditional-music
  isrc code: USTE10327377
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T07:28:30Z
  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 0xa0212c50cfed60ce9906b9c743be82d2dc0fb6cf2f03aac39a2bfc523bf04a56. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USTE10327377.
    date published: 2026-07-30T07:28:30Z
  audio: What Child Is This?
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 7
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
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      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.201
    additional property: Energy
      type: PropertyValue
      value: 0.023
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
    additional property: Instrumentalness
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
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track: The Cherry Tree Carol

Acousticness
type: PropertyValue
value: 0.991

Instrumentalness
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value: 0

Liveness
type: PropertyValue
value: 0.287

Valence (Positivity)
type: PropertyValue
value: 0.078

Loudness (dB)
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value: -33.03

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

The Cherry Tree Carol
type: MusicRecording
duration: PT4M4S
duration ms: 244506
explicit: false
by artist: Traditional
by artist: Robert Shaw
by artist: Robert Shaw Chamber Singers
by artist: Christopher Cock
in album: Choral Christmas
  type: MusicAlbum
  date published: 2024-11-27
genre: bhajan
genre: gregorian-chant
genre: medieval
genre: traditional-music
isrc code: USTE10322377
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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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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  value: 2026-07-29T21:09:47Z
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 0x095c91de5102388153207caa8b269323a95009ecd4cb2c0af95b8581c8f03434. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USTE10322377.
  date published: 2026-07-29T21:09:47Z
audio: The Cherry Tree Carol
  type: AudioObject
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Mode Name
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