Jeff Smith
type: MusicGroup
description: Jeff Smith or Jeffrey Smith may refer to: Sports Combat sports Jeff Smith (boxer) (1891–1962), American boxer Jeff Smith (1948–2019), American professional wrestling manager best known as Izzy Slapaw
popularity: 8
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbba80b39b1fcf461c1dddafd1ca8720d57e28dfa6ddd00d692706d259e5ac34f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04a855a1-eba4-4f49-bb87-b8f3c0306d9f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04a855a1-eba4-4f49-bb87-b8f3c0306d9f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04a855a1-eba4-4f49-bb87-b8f3c0306d9f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbba80b39b1fcf461c1dddafd1ca8720d57e28dfa6ddd00d692706d259e5ac34f","name":"Jeff Smith","registered_at":"2026-06-15T15:09:13Z","symbol":"NIM0746720","token_address":"0xb8b94075fff3e65e2ccf75d3d679d0350e7e1fd3","type":"artist","uuid":"04a855a1-eba4-4f49-bb87-b8f3c0306d9f"}
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 0xbba80b39b1fcf461c1dddafd1ca8720d57e28dfa6ddd00d692706d259e5ac34f. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04a855a1-eba4-4f49-bb87-b8f3c0306d9f.json and https://artists.proofprofile.net/proofs/artist/04a855a1-eba4-4f49-bb87-b8f3c0306d9f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0xbba80b39b1fcf461c1dddafd1ca8720d57e28dfa6ddd00d692706d259e5ac34f","name":"Jeff Smith","registered_at":"2026-06-15T15:09:13Z","symbol":"NIM0746720","token_address":"0xb8b94075fff3e65e2ccf75d3d679d0350e7e1fd3","type":"artist","uuid":"04a855a1-eba4-4f49-bb87-b8f3c0306d9f"}