Petko Marinov
type: MusicGroup
description: thumb | right | alt=A man with white hair and beard standing in a stadium, looking toward the ground. | Petko Marinov in 2018. Petko Marinov (Bulgarian Cyrillic: Петко Маринов) (born on 11 June 194
popularity: 2
followers: 1
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d85a1d210149b3621612ee178f5f6118b0937690da9f1d5cbb3ef92dbb0ec65
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d89bd7ce-0124-4642-b628-fccaad916af5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d89bd7ce-0124-4642-b628-fccaad916af5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d89bd7ce-0124-4642-b628-fccaad916af5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0d85a1d210149b3621612ee178f5f6118b0937690da9f1d5cbb3ef92dbb0ec65","name":"Petko Marinov","registered_at":"2026-06-21T03:45:45Z","symbol":"NIM1808637","token_address":"0x4872ef69f90ae37568ad93c76c66a6224a9cc875","type":"artist","uuid":"d89bd7ce-0124-4642-b628-fccaad916af5"}
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 0x0d85a1d210149b3621612ee178f5f6118b0937690da9f1d5cbb3ef92dbb0ec65. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d89bd7ce-0124-4642-b628-fccaad916af5.json and https://artists.proofprofile.net/proofs/artist/d89bd7ce-0124-4642-b628-fccaad916af5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x0d85a1d210149b3621612ee178f5f6118b0937690da9f1d5cbb3ef92dbb0ec65","name":"Petko Marinov","registered_at":"2026-06-21T03:45:45Z","symbol":"NIM1808637","token_address":"0x4872ef69f90ae37568ad93c76c66a6224a9cc875","type":"artist","uuid":"d89bd7ce-0124-4642-b628-fccaad916af5"}