Algorithm 2: Smart contract for public supervision information on-chain

Input:$EnterPeer$, $PubSupInfo$ Output:$txID$, $BlockNum$ 1 // Check the format and content of data trading information 2 if ((isTdTypeLegal($PubSupInfo$) && isTdContentLegal($PubSupInfo$)) 3 // Store the data transaction information in the blockchain public area 4 if (wriPubChannel($EnterPeer$, $PubSupInfo$)) 5  return $txID$, $BlockNum$;