Emil de Cou
type: MusicGroup
description: Emil de Cou is an American conductor who became associate conductor of the National Symphony Orchestra (John F. Kennedy Center for the Performing Arts) in September 2003. He has led the orchestra on r
popularity: 9
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5567901b05f27cf5278a5a47aa305c6aaca24d9ebf7f7505aa21d5ac4753853
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50d93f9f-facf-4dd8-8cab-b86508f29413.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/50d93f9f-facf-4dd8-8cab-b86508f29413.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/50d93f9f-facf-4dd8-8cab-b86508f29413
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5567901b05f27cf5278a5a47aa305c6aaca24d9ebf7f7505aa21d5ac4753853","name":"Emil de Cou","registered_at":"2026-06-16T17:51:24Z","symbol":"NIM1129117","token_address":"0xdad91c10b73cc0675692f2a375c28d4fd9bc26d6","type":"artist","uuid":"50d93f9f-facf-4dd8-8cab-b86508f29413"}
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 0xc5567901b05f27cf5278a5a47aa305c6aaca24d9ebf7f7505aa21d5ac4753853. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50d93f9f-facf-4dd8-8cab-b86508f29413.json and https://artists.proofprofile.net/proofs/artist/50d93f9f-facf-4dd8-8cab-b86508f29413.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xc5567901b05f27cf5278a5a47aa305c6aaca24d9ebf7f7505aa21d5ac4753853","name":"Emil de Cou","registered_at":"2026-06-16T17:51:24Z","symbol":"NIM1129117","token_address":"0xdad91c10b73cc0675692f2a375c28d4fd9bc26d6","type":"artist","uuid":"50d93f9f-facf-4dd8-8cab-b86508f29413"}