Ekaterina Murina
type: MusicGroup
popularity: 13
followers: 107
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3c5bbc170c60d01e4008025bc23bec87c51eaeed91602adf70a6f8bc6249cbd3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e20d8919-67a5-4e82-8001-89cb81056b8e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e20d8919-67a5-4e82-8001-89cb81056b8e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e20d8919-67a5-4e82-8001-89cb81056b8e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3c5bbc170c60d01e4008025bc23bec87c51eaeed91602adf70a6f8bc6249cbd3","name":"Ekaterina Murina","registered_at":"2026-06-15T04:23:57Z","symbol":"NIM0681030","token_address":"0x74646f4f7c1f620a1903df3c68628cef54b4e284","type":"artist","uuid":"e20d8919-67a5-4e82-8001-89cb81056b8e"}
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 0x3c5bbc170c60d01e4008025bc23bec87c51eaeed91602adf70a6f8bc6249cbd3. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e20d8919-67a5-4e82-8001-89cb81056b8e.json and https://artists.proofprofile.net/proofs/artist/e20d8919-67a5-4e82-8001-89cb81056b8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x3c5bbc170c60d01e4008025bc23bec87c51eaeed91602adf70a6f8bc6249cbd3","name":"Ekaterina Murina","registered_at":"2026-06-15T04:23:57Z","symbol":"NIM0681030","token_address":"0x74646f4f7c1f620a1903df3c68628cef54b4e284","type":"artist","uuid":"e20d8919-67a5-4e82-8001-89cb81056b8e"}