|
Title: Block hashing in Javascript - Could you help me with implementation ? Post by: darius2020 on January 14, 2014, 04:30:07 PM Hi,
Block hashing in Javascript - Could you help me with implementation ? I am looking for block hashing in Javascript demo, reading input parameters from Blockchain ( 6 parameters) saved to database and run off-line, as demo for students to verify the calculated nonces were correct from the first block. Looking for hashing algorithm ( sha256 in Javascript already works fine) and 6 input parameters as datafile. Any idea ? Title: Re: Block hashing in Javascript - Could you help me with implementation ? Post by: darius2020 on January 15, 2014, 03:37:08 PM I am testing Block hashing algorithm from
https://en.bitcoin.it/wiki/Block_hashing_algorithm (https://en.bitcoin.it/wiki/Block_hashing_algorithm) code in Python and PHP + sha256 library + code in plain C from http://pastebin.com/bW3fQA2a (http://pastebin.com/bW3fQA2a) unfortunately block header parameters from http://blockexplorer.com/block/00000000000000001e8d6829a8a21adc5d38d0a473b144b6765798e61f98bd1d (http://blockexplorer.com/block/00000000000000001e8d6829a8a21adc5d38d0a473b144b6765798e61f98bd1d) don't come in sha256 hashing format since I need Unix time conversion for >>> Time?: 2011-05-21 17:26:31 http://blockchain.info/en/block-index/458660/00000000000000000fcea0d175785506f4681dc94d1fcf50deeda8082caf1543 (http://blockchain.info/en/block-index/458660/00000000000000000fcea0d175785506f4681dc94d1fcf50deeda8082caf1543) the same problem with time parameter. Any idea how to download block headers file as 6 parameter input into my block hashing algorithm in Javascript ? |