Sam Barrett
type: MusicGroup
description: Samuel David Barrett (22 January 1905 – 21 December 1984) was an Australian rules footballer who played for the Richmond Football Club in the Victorian Football League (VFL). References External
popularity: 3
followers: 5
additional property: CopyrightID
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
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82a0c7f9-73f8-41b1-a234-b4b89b63967a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/82a0c7f9-73f8-41b1-a234-b4b89b63967a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/82a0c7f9-73f8-41b1-a234-b4b89b63967a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x5c78812b87f00fe0d3b62ecad0d454327329e37b89b3bc1a73669b33fbe8614e. 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/82a0c7f9-73f8-41b1-a234-b4b89b63967a.json and https://artists.proofprofile.net/proofs/artist/82a0c7f9-73f8-41b1-a234-b4b89b63967a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
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track: Missa Desilde al cavallero: IIa. Gloria in excelsis Deo
  type: MusicRecording
  duration: PT2M11S
  duration ms: 131320
  explicit: false
  by artist: Cristobal de Morales
  by artist: De Profundis
  by artist: Sam Barrett
  by artist: Gregory Drott
  by artist: Eamonn Dougan
  in album: Morales: Missa Mille regretz & Missa Desilde al cavallero
    type: MusicAlbum
    date published: 2023-03-03
  popularity: 2
  genre: choral
  genre: requiem
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T16:33:26Z
  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 0x01540cc1707e5a1f2e303640972b067e33aeaf758cf8e02c0c3305fa78abc9fe. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBAJY2341542.
    date published: 2026-07-31T16:33:26Z
  audio: Missa Desilde al cavallero: IIa. Gloria in excelsis Deo
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    additional property: Musical Key
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    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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    additional property: Loudness (dB)
      type: PropertyValue
      value: -26.52
    additional property: Key Name
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      value: F
    additional property: Mode Name
      type: PropertyValue
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track: Missa Desilde al cavallero: IIIa. Credo in unum Deum
  type: MusicRecording
  duration: PT2M15S
  duration ms: 135373
  explicit: false
  by artist: Cristobal de Morales
  by artist: De Profundis
  by artist: Sam Barrett
  by artist: Gregory Drott
  by artist: Eamonn Dougan
  in album: Morales: Missa Mille regretz & Missa Desilde al cavallero
    type: MusicAlbum
    date published: 2023-03-03
  popularity: 2
  genre: choral
  genre: requiem
  isrc code: GBAJY2341545
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  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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    value: 2026-07-07T16:46:38+00:00
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJY2341545
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0x542c7cb0f2f740c3c7844ed7b7e95bba38baebcd7d7ad8a4c8ee4a3045f541f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJY2341545.
    date published: 2026-07-08T03:20:19Z
  audio: Missa Desilde al cavallero: IIIa. Credo in unum Deum
    type: AudioObject
    additional property: Tempo (BPM)
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      value: 124.737
    additional property: Musical Key
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      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.172
    additional property: Energy
      type: PropertyValue
      value: 0.066
    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
    additional property: Mode Name

Acousticness
type: PropertyValue
value: 0.978

Instrumentalness
type: PropertyValue
value: 0.561

Liveness
type: PropertyValue
value: 0.1

Valence (Positivity)
type: PropertyValue
value: 0.181

Loudness (dB)
type: PropertyValue
value: -28.353

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major