Mark Stepro
type: MusicGroup
popularity: 17
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3bb876ee5e984680d8e5dd49fb89fcb0c535560053a99af60de9a43dd852fed5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36950650-a443-4e1c-a7b8-2e1985f05ec8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/36950650-a443-4e1c-a7b8-2e1985f05ec8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/36950650-a443-4e1c-a7b8-2e1985f05ec8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3bb876ee5e984680d8e5dd49fb89fcb0c535560053a99af60de9a43dd852fed5","name":"Mark Stepro","registered_at":"2026-06-14T10:11:29Z","symbol":"NIM0420331","token_address":"0x45ea67cc9845e72af609a53a40f38c4bff41610e","type":"artist","uuid":"36950650-a443-4e1c-a7b8-2e1985f05ec8"}
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 0x3bb876ee5e984680d8e5dd49fb89fcb0c535560053a99af60de9a43dd852fed5. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36950650-a443-4e1c-a7b8-2e1985f05ec8.json and https://artists.proofprofile.net/proofs/artist/36950650-a443-4e1c-a7b8-2e1985f05ec8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:03:42Z
  text: {"copyright_id":"0x3bb876ee5e984680d8e5dd49fb89fcb0c535560053a99af60de9a43dd852fed5","name":"Mark Stepro","registered_at":"2026-06-14T10:11:29Z","symbol":"NIM0420331","token_address":"0x45ea67cc9845e72af609a53a40f38c4bff41610e","type":"artist","uuid":"36950650-a443-4e1c-a7b8-2e1985f05ec8"}