Viktor Valkov
type: MusicGroup
popularity: 2
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0f1b2ed0ae2dd164261e0adc50ff9f4906375093ccde48e309636c3892f2a6de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954134
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954134
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7eee7dcc-3ab8-4563-9c7c-ec69e84568ae.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7eee7dcc-3ab8-4563-9c7c-ec69e84568ae.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7eee7dcc-3ab8-4563-9c7c-ec69e84568ae
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T19:41:05Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0f1b2ed0ae2dd164261e0adc50ff9f4906375093ccde48e309636c3892f2a6de","name":"Viktor Valkov","registered_at":"2026-06-17T09:54:11Z","symbol":"NIM1358796","token_address":"0xe24bed7589758adea4b61f3df0fee8ce82ed2a21","type":"artist","uuid":"7eee7dcc-3ab8-4563-9c7c-ec69e84568ae"}
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 0x0f1b2ed0ae2dd164261e0adc50ff9f4906375093ccde48e309636c3892f2a6de. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7eee7dcc-3ab8-4563-9c7c-ec69e84568ae.json and https://artists.proofprofile.net/proofs/artist/7eee7dcc-3ab8-4563-9c7c-ec69e84568ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T19:41:05Z
  text: {"copyright_id":"0x0f1b2ed0ae2dd164261e0adc50ff9f4906375093ccde48e309636c3892f2a6de","name":"Viktor Valkov","registered_at":"2026-06-17T09:54:11Z","symbol":"NIM1358796","token_address":"0xe24bed7589758adea4b61f3df0fee8ce82ed2a21","type":"artist","uuid":"7eee7dcc-3ab8-4563-9c7c-ec69e84568ae"}
album: Brahms and Shostakovich: Piano Trios No. 2 (Live)
  type: MusicAlbum
  date published: 2021-08-28