Jacques Legrand
type: MusicGroup
description: Jacques Legrand may refer to: (c. 1350–1422), French writer of the Arts de seconde rhétorique, also known as Jacobus Magnus Jacques Legrand (philatelist) (1820–1912), French philatelist Jacques L
popularity: 11
followers: 181
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x5f8f5fecece28a58c56827e5d96c0a73fe599fe4a94995fe6faba2ac1b286850
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953674
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d3a4cba-421d-456b-908f-e7d4cba91838.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5d3a4cba-421d-456b-908f-e7d4cba91838.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5d3a4cba-421d-456b-908f-e7d4cba91838
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T19:07:16Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x5f8f5fecece28a58c56827e5d96c0a73fe599fe4a94995fe6faba2ac1b286850","name":"Jacques Legrand","registered_at":"2026-06-14T14:17:11Z","symbol":"NIM0478968","token_address":"0x040288f883dbeeff45cff0aede653a1d66adda28","type":"artist","uuid":"5d3a4cba-421d-456b-908f-e7d4cba91838"}
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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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8f5fecece28a58c56827e5d96c0a73fe599fe4a94995fe6faba2ac1b286850. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d3a4cba-421d-456b-908f-e7d4cba91838.json and https://artists.proofprofile.net/proofs/artist/5d3a4cba-421d-456b-908f-e7d4cba91838.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T19:07:16Z
  text: {"copyright_id":"0x5f8f5fecece28a58c56827e5d96c0a73fe599fe4a94995fe6faba2ac1b286850","name":"Jacques Legrand","registered_at":"2026-06-14T14:17:11Z","symbol":"NIM0478968","token_address":"0x040288f883dbeeff45cff0aede653a1d66adda28","type":"artist","uuid":"5d3a4cba-421d-456b-908f-e7d4cba91838"}
track: Heart and Soul
  type: MusicRecording
  duration: PT3M19S
  duration ms: 199730
  explicit: false
  by artist: Jacques Legrand
  in album: The Mindful Piano (Peaceful Music to Chill and Relax)
    type: MusicAlbum
    date published: 2015-06-26
  isrc code: QMVRR1300179
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMVRR1300179
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T13:32:09Z
  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 0x491d2376d14775556eed197b9da79625cf9336e875af38832017201e10cc82e2. 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/QMVRR1300179.
    date published: 2026-06-13T13:32:09Z
  audio: Heart and Soul
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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      value: 0
    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: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
      value: 0.953
    additional property: Liveness
      type: PropertyValue
      value: 0.11
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.267
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.72
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Minor