Louis Marchand
type: MusicGroup
genre: gregorian chant
description: Louis Marchand (2 February 1669 – 17 February 1732) was a French organist, harpsichordist and composer. Born into an organist's family, Marchand was a child prodigy and quickly established himself as
popularity: 11
followers: 1557
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9e38869fdf7a0c799b107a689b5e58d19396f677e443594f64598ec28bf8e796
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953612
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953612
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/171574e3-bbf2-4a38-b93f-1b7f8d13d36c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/171574e3-bbf2-4a38-b93f-1b7f8d13d36c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/171574e3-bbf2-4a38-b93f-1b7f8d13d36c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:22:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9e38869fdf7a0c799b107a689b5e58d19396f677e443594f64598ec28bf8e796","name":"Louis Marchand","registered_at":"2026-06-14T06:55:14Z","symbol":"NIM0373536","token_address":"0x2b3a59568c477200919dd7e34fe49d05b094886a","type":"artist","uuid":"171574e3-bbf2-4a38-b93f-1b7f8d13d36c"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e38869fdf7a0c799b107a689b5e58d19396f677e443594f64598ec28bf8e796. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/171574e3-bbf2-4a38-b93f-1b7f8d13d36c.json and https://artists.proofprofile.net/proofs/artist/171574e3-bbf2-4a38-b93f-1b7f8d13d36c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:22:11Z
  text: {"copyright_id":"0x9e38869fdf7a0c799b107a689b5e58d19396f677e443594f64598ec28bf8e796","name":"Louis Marchand","registered_at":"2026-06-14T06:55:14Z","symbol":"NIM0373536","token_address":"0x2b3a59568c477200919dd7e34fe49d05b094886a","type":"artist","uuid":"171574e3-bbf2-4a38-b93f-1b7f8d13d36c"}
album: Estives musicales sur l'orgue de Louvie-Juzon
  type: MusicAlbum
  date published: 2024-11-29
  track: Cloches de Louvie-Juzon: Volée
    type: MusicRecording
    duration: PT1M41S
    duration ms: 101505
    explicit: false
    by artist: Antonio Valente
    by artist: Antonio Cabezon
    by artist: Jan Pieterszoon Sweelinck
    by artist: Antonio Carreira
    by artist: Sebastian Duron
    by artist: Francisco Correa de Arauxo
    by artist: Johann Pachelbel
    by artist: Juan Cabanilles
    by artist: Louis Couperin
    by artist: François Couperin
    by artist: Louis Marchand
    by artist: Dietrich Buxtehude
    by artist: Vincent Lübeck
    by artist: Johann Sebastian Bach
    by artist: George Frideric Handel
    by artist: Traditional
    by artist: Marie-Ange Leurent
    by artist: Eric Lebrun
    in album: Estives musicales sur l'orgue de Louvie-Juzon
      type: MusicAlbum
      date published: 2024-11-29
    popularity: 1
    genre: italian-renaissance
    isrc code: CH6542476232
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-07T17:02:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9ad4fb2122f2d818db2ba31f9d1f9c0ba5ba8e17d919002b263a46b4e212e74b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957120
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957120
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542476232
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-08T03:22:41Z
    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 0x9ad4fb2122f2d818db2ba31f9d1f9c0ba5ba8e17d919002b263a46b4e212e74b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH6542476232.
      date published: 2026-07-08T03:22:41Z
    audio: Cloches de Louvie-Juzon: Volée
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.015
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.278
      additional property: Energy
        type: PropertyValue
        value: 0.012
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.987
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.853
      additional property: Liveness
        type: PropertyValue
        value: 0.095
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.022
      additional property: Loudness (dB)
        type: PropertyValue
        value: -26.214
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Keybords works: Lo ballo dell'intorcia
    type: MusicRecording
    duration: PT1M36S
    duration ms: 96945
    explicit: false
    by artist: Traditional
    by artist: Antonio Cabezon
    by artist: Jan Pieterszoon Sweelinck
    by artist: Antonio Carreira
    by artist: Sebastian Duron
    by artist: Francisco Correa de Arauxo
    by artist: Johann Pachelbel
    by artist: Juan Cabanilles
    by artist: Louis Couperin
    by artist: François Couperin
    by artist: Louis Marchand
    by artist: Dietrich Buxtehude
    by artist: Vincent Lübeck
    by artist: Johann Sebastian Bach
    by artist: George Frideric Handel
    by artist: Antonio Valente
    by artist: Marie-Ange Leurent
    by artist: Eric Lebrun
    in album: Estives musicales sur l'orgue de Louvie-Juzon
      type: MusicAlbum
      date published: 2024-11-29
    popularity: 4
    genre: bhajan
    genre: gregorian-chant
    genre: medieval
    genre: traditional-music
    isrc code: CH6542476234
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T01:13:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9411c32a8cea275cdf01fd0f5649796c1688da28328cadab518df2f59a76ae25
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960334
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960334
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6542476234
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T02:19:15Z
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Keybords works: Lo ballo dell'intorcia
album: Louis Marchand: Harpsihord Suites

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9411c32a8cea275cdf01fd0f5649796c1688da28328cadab518df2f59a76ae25. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6542476234.
date published: 2026-07-31T02:19:15Z

Keybords works: Lo ballo dell'intorcia
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 109.017
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.275
additional property: Energy
  type: PropertyValue
  value: 0.343
additional property: Speechiness
  type: PropertyValue
  value: 0.03
additional property: Acousticness
  type: PropertyValue
  value: 0.91
additional property: Instrumentalness
  type: PropertyValue
  value: 0.883
additional property: Liveness
  type: PropertyValue
  value: 0.355
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.567
additional property: Loudness (dB)
  type: PropertyValue
  value: -17.725
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major

Louis Marchand: Harpsihord Suites
type: MusicAlbum
date published: 1988