La Main Harmonique
type: MusicGroup
genre: choral
popularity: 4
followers: 135
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc99fd99befcf48e5941e1bd6c49ec50156b0fefcda086d9ded5039a3be4c0111
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953984
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953984
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d636108-9c56-4573-90ad-825626a8d6ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2d636108-9c56-4573-90ad-825626a8d6ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2d636108-9c56-4573-90ad-825626a8d6ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:08:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc99fd99befcf48e5941e1bd6c49ec50156b0fefcda086d9ded5039a3be4c0111","name":"La Main Harmonique","registered_at":"2026-06-16T05:26:52Z","symbol":"NIM0951450","token_address":"0x34ebe19ca9f48f9ec2afc80f7b18b1337bd11c81","type":"artist","uuid":"2d636108-9c56-4573-90ad-825626a8d6ce"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99fd99befcf48e5941e1bd6c49ec50156b0fefcda086d9ded5039a3be4c0111. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d636108-9c56-4573-90ad-825626a8d6ce.json and https://artists.proofprofile.net/proofs/artist/2d636108-9c56-4573-90ad-825626a8d6ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xc99fd99befcf48e5941e1bd6c49ec50156b0fefcda086d9ded5039a3be4c0111","name":"La Main Harmonique","registered_at":"2026-06-16T05:26:52Z","symbol":"NIM0951450","token_address":"0x34ebe19ca9f48f9ec2afc80f7b18b1337bd11c81","type":"artist","uuid":"2d636108-9c56-4573-90ad-825626a8d6ce"}
album: Ockeghem & Compère : Musiques au temps d'Anne de France
  type: MusicAlbum
  date published: 2010-10-01
album: L'aura mia sacra (Mélodies et madrigaux inspirés de Pétrarque)
  type: MusicAlbum
  date published: 2013-10-08
album: Gesualdo: Sacrae cantiones
  type: MusicAlbum
  date published: 2015-10-02
album: Utopia (La fantaisie des madrigaux de la Renaissance tardive)
  type: MusicAlbum
  date published: 2022-02-04