Karen Vardanyan
type: MusicGroup
description: Karen Vardanyan (, November 30, 1976, Yerevan, Armenian SSR, USSR) is an Armenian businessman, philanthropist, owner of Grand Holding, and the youngest son of Hrant Vardanyan. Biography Karen Varda
popularity: 2
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd77c8c068c89d9d38ebdd064a16b2858c177c69bab6214a66339b53cd8220759
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/f1f468e5-78d8-4289-b80d-c195cc2fb5c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1f468e5-78d8-4289-b80d-c195cc2fb5c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f1f468e5-78d8-4289-b80d-c195cc2fb5c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd77c8c068c89d9d38ebdd064a16b2858c177c69bab6214a66339b53cd8220759","name":"Karen Vardanyan","registered_at":"2026-06-21T13:37:50Z","symbol":"NIM1936605","token_address":"0xf47be803a985ff742f3de90fcd39ca21dadd19c3","type":"artist","uuid":"f1f468e5-78d8-4289-b80d-c195cc2fb5c4"}
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 0xd77c8c068c89d9d38ebdd064a16b2858c177c69bab6214a66339b53cd8220759. 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/f1f468e5-78d8-4289-b80d-c195cc2fb5c4.json and https://artists.proofprofile.net/proofs/artist/f1f468e5-78d8-4289-b80d-c195cc2fb5c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0xd77c8c068c89d9d38ebdd064a16b2858c177c69bab6214a66339b53cd8220759","name":"Karen Vardanyan","registered_at":"2026-06-21T13:37:50Z","symbol":"NIM1936605","token_address":"0xf47be803a985ff742f3de90fcd39ca21dadd19c3","type":"artist","uuid":"f1f468e5-78d8-4289-b80d-c195cc2fb5c4"}
album: Jerm Arev
  type: MusicAlbum
  date published: 2025-02-04