Petros Kusmu
type: MusicGroup
popularity: 5
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb07979fe5effa40ffe8cd2fa36d682ad9fcbb8d38e99c21da5b99872a725938
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb07979fe5effa40ffe8cd2fa36d682ad9fcbb8d38e99c21da5b99872a725938","name":"Petros Kusmu","registered_at":"2026-06-20T17:23:59Z","symbol":"NIM1666085","token_address":"0x26b0d092f849ebbe8ff67693c7ab278fa3961378","type":"artist","uuid":"bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1"}
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 0xbb07979fe5effa40ffe8cd2fa36d682ad9fcbb8d38e99c21da5b99872a725938. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1.json and https://artists.proofprofile.net/proofs/artist/bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0xbb07979fe5effa40ffe8cd2fa36d682ad9fcbb8d38e99c21da5b99872a725938","name":"Petros Kusmu","registered_at":"2026-06-20T17:23:59Z","symbol":"NIM1666085","token_address":"0x26b0d092f849ebbe8ff67693c7ab278fa3961378","type":"artist","uuid":"bbfcf579-ad7d-43b6-b5fc-e1d8c90c0ab1"}