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blockchain assignment
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<!DOCTYPE html PUBLIC "-//ABISOURCE//DTD XHTML plus AWML 2.2//EN" "http://www.abisource.com/2004/xhtml-awml/xhtml-awml.mod"><div> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:awml="http://www.abisource.com/2004/xhtml-awml/"> <head> <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" /> <title> Abiword HTML Document </title> </head> <body> <p awml:style="header"> CS 1450Program 6Spring 2017 </p> </body> <div> <p> <a name="_Hlk480892393"> </a> This is your last blockchain assignment! In this assignment, we will validate the contents of the block chain. Your program should evaluate files Block1.txt, Block2.txt and Block3.txt in order. The outputs should be exactly as shown below. This 1) makes grading easier, and 2) is what you will have to do in industry, anyway. </p> <p> </p> <p> If the blocks are all OK, the output should be: </p> <p> <img style="width:79.9mm; height:50.4mm" src="642Program61.docx.txt_files/rId6.png" title="" alt="" align="" /></p> <p> </p> <p> Error Conditions: </p> <p> If the Block2.txt block hash is changed, the following error messages are printed: </p> <p> <img style="width:58.2mm; height:31.6mm" src="642Program61.docx.txt_files/rId7.png" title="" alt="" align="" /></p> <p> </p> <p> If the Block2.txt nonce is changed: </p> <p> <img style="width:70.9mm; height:38.2mm" src="642Program61.docx.txt_files/rId8.png" title="" alt="" align="" /></p> <p> </p> <p> If a Merkle Tree element is changed: </p> <p> <img style="width:67.9mm; height:39.2mm" src="642Program61.docx.txt_files/rId9.png" title="" alt="" align="" /></p> <p> </p> <p> If the Block2.tst previous block hash is changed: </p> <p> <img style="width:85.0mm; height:50.0mm" src="642Program61.docx.txt_files/rId10.png" title="" alt="" align="" /></p> <p> </p> <p> And in this case, the 5<span style="vertical-align:super">th</span> transaction in Block2.txt was altered: </p> <p> <img style="width:85.0mm; height:59.7mm" src="642Program61.docx.txt_files/rId11.png" title="" alt="" align="" /></p> <p> </p> <p> The given Block1.txt, Block2.txt and Block3.txt results are: </p> <p> <img style="width:77.5mm; height:66.3mm" src="642Program61.docx.txt_files/rId12.png" title="" alt="" align="" /> <a name="_GoBack"> </a> </p> <p> Name your file HW6_<YourName>.java. Please post only your java file to Blackboard. </p> <p awml:style="header"> </p> </div> </html> </div> ">
