Ernest Macmillan
type: MusicGroup
description: Sir Ernest Alexander Campbell MacMillan, (18 August 1893 – 6 May 1973) was a Canadian orchestral conductor, composer, organist, and Canada's only "Musical Knight". He is widely regarded as being Cana
popularity: 4
followers: 91
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d9b87c68006ada266c458ffba106e7fc00513b063d7fef3aeb424aea9c97b09
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e663200e-ffc3-45dd-8f78-055c33e3ef69.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e663200e-ffc3-45dd-8f78-055c33e3ef69.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e663200e-ffc3-45dd-8f78-055c33e3ef69
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4d9b87c68006ada266c458ffba106e7fc00513b063d7fef3aeb424aea9c97b09","name":"Ernest Macmillan","registered_at":"2026-06-21T09:02:18Z","symbol":"NIM1883170","token_address":"0x6eb9eac4f8de875fa2c7f39065cfdf51a50ac96f","type":"artist","uuid":"e663200e-ffc3-45dd-8f78-055c33e3ef69"}
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 0x4d9b87c68006ada266c458ffba106e7fc00513b063d7fef3aeb424aea9c97b09. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e663200e-ffc3-45dd-8f78-055c33e3ef69.json and https://artists.proofprofile.net/proofs/artist/e663200e-ffc3-45dd-8f78-055c33e3ef69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x4d9b87c68006ada266c458ffba106e7fc00513b063d7fef3aeb424aea9c97b09","name":"Ernest Macmillan","registered_at":"2026-06-21T09:02:18Z","symbol":"NIM1883170","token_address":"0x6eb9eac4f8de875fa2c7f39065cfdf51a50ac96f","type":"artist","uuid":"e663200e-ffc3-45dd-8f78-055c33e3ef69"}
album: MacMillan: String Quartet In C Major; Two Sketches On French Canadian Airs
  type: MusicAlbum
  date published: 1968-01-01
album: Sir Ernest MacMillan - Portrait: A Tribute To A Great Canadian Musician
  type: MusicAlbum
  date published: 1994
album: Gould & MacMillan: String Quartets
  type: MusicAlbum
  date published: 2009-01-01
album: Glenn Gould & Ernest MacMillan: String Quartets
  type: MusicAlbum
  date published: 2009-03-01
album: MacMillan, E.: A Centenary Celebration
  type: MusicAlbum
  date published: 2012-04-01
album: MacMillan, E.: A Centenary Celebration
  type: MusicAlbum
  date published: 2012-04-01