Marian Zacharewicz
type: MusicGroup
popularity: 14
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x249d2684febd5f0200e7e3e57e35766508b45d9d464bec549dc7c46432f50ef1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953768
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953768
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1e20483-f5c6-4fd3-b61c-e65d8c4e0975.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c1e20483-f5c6-4fd3-b61c-e65d8c4e0975.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c1e20483-f5c6-4fd3-b61c-e65d8c4e0975
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T09:30:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x249d2684febd5f0200e7e3e57e35766508b45d9d464bec549dc7c46432f50ef1","name":"Marian Zacharewicz","registered_at":"2026-06-15T00:51:20Z","symbol":"NIM0630256","token_address":"0xb59db6e1e8c0434a7660ea2fffe9bfc148b86590","type":"artist","uuid":"c1e20483-f5c6-4fd3-b61c-e65d8c4e0975"}
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 0x249d2684febd5f0200e7e3e57e35766508b45d9d464bec549dc7c46432f50ef1. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1e20483-f5c6-4fd3-b61c-e65d8c4e0975.json and https://artists.proofprofile.net/proofs/artist/c1e20483-f5c6-4fd3-b61c-e65d8c4e0975.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T09:30:06Z
  text: {"copyright_id":"0x249d2684febd5f0200e7e3e57e35766508b45d9d464bec549dc7c46432f50ef1","name":"Marian Zacharewicz","registered_at":"2026-06-15T00:51:20Z","symbol":"NIM0630256","token_address":"0xb59db6e1e8c0434a7660ea2fffe9bfc148b86590","type":"artist","uuid":"c1e20483-f5c6-4fd3-b61c-e65d8c4e0975"}