Jean-Delphin Alard
type: MusicGroup
description: Jean-Delphin Alard (8 March 181522 February 1888) was a French violinist, composer, and teacher. He was the son-in-law of Jean-Baptiste Vuillaume, and Pablo de Sarasate was one of his students. Biogr
popularity: 4
followers: 298
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc8c396ea13b7d77c88eb1460fd58d686609249a6f45285ea2cd093e0312a5395
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/589a148d-66ad-4492-83b0-5758772607c2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/589a148d-66ad-4492-83b0-5758772607c2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/589a148d-66ad-4492-83b0-5758772607c2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc8c396ea13b7d77c88eb1460fd58d686609249a6f45285ea2cd093e0312a5395","name":"Jean-Delphin Alard","registered_at":"2026-06-16T20:31:48Z","symbol":"NIM1167400","token_address":"0x90ce41f95f81acacf17844cca8bcaf8c6bb5049f","type":"artist","uuid":"589a148d-66ad-4492-83b0-5758772607c2"}
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 0xc8c396ea13b7d77c88eb1460fd58d686609249a6f45285ea2cd093e0312a5395. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/589a148d-66ad-4492-83b0-5758772607c2.json and https://artists.proofprofile.net/proofs/artist/589a148d-66ad-4492-83b0-5758772607c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xc8c396ea13b7d77c88eb1460fd58d686609249a6f45285ea2cd093e0312a5395","name":"Jean-Delphin Alard","registered_at":"2026-06-16T20:31:48Z","symbol":"NIM1167400","token_address":"0x90ce41f95f81acacf17844cca8bcaf8c6bb5049f","type":"artist","uuid":"589a148d-66ad-4492-83b0-5758772607c2"}