Transaction

j"1LAnZuoQdcKCkpDBKQMCgziGMoPC4VQUckM<div class="post">We had our first automatic adjustment of the proof-of-work difficulty on 30 Dec 2009. &nbsp;<br/><br/>The minimum difficulty is 32 zero bits, so even if only one person was running a node, the difficulty doesn't get any easier than that. &nbsp;For most of last year, we were hovering below the minimum. &nbsp;On 30 Dec we broke above it and the algorithm adjusted to more difficulty. &nbsp;It's been getting more difficult at each adjustment since then.<br/><br/>The adjustment on 04 Feb took it up from 1.34 times last year's difficulty to 1.82 times more difficult than last year. &nbsp;That means you generate only 55% as many coins for the same amount of work.<br/><br/>The difficulty adjusts proportionally to the total effort across the network. &nbsp;If the number of nodes doubles, the difficulty will also double, returning the total generated to the target rate.<br/><br/>For those technically inclined, the proof-of-work difficulty can be seen by searching on "target:" in debug.log. &nbsp;It's a 256-bit unsigned hex number, which the SHA-256 value has to be less than to successfully generate a block. &nbsp;It gets adjusted every 2016 blocks, typically two weeks. &nbsp;That's when it prints "GetNextWorkRequired RETARGET" in debug.log. <br/><br/>minimum &nbsp; &nbsp;00000000ffff0000000000000000000000000000000000000000000000000000<br/>30/12/2009 00000000d86a0000000000000000000000000000000000000000000000000000<br/>11/01/2010 00000000c4280000000000000000000000000000000000000000000000000000<br/>25/01/2010 00000000be710000000000000000000000000000000000000000000000000000<br/>04/02/2010 000000008cc30000000000000000000000000000000000000000000000000000<br/>14/02/2010 0000000065465700000000000000000000000000000000000000000000000000<br/>24/02/2010 0000000043b3e500000000000000000000000000000000000000000000000000<br/>08/03/2010 00000000387f6f00000000000000000000000000000000000000000000000000<br/>21/03/2010 0000000038137500000000000000000000000000000000000000000000000000<br/>01/04/2010 000000002a111500000000000000000000000000000000000000000000000000<br/>12/04/2010 0000000020bca700000000000000000000000000000000000000000000000000<br/>21/04/2010 0000000016546f00000000000000000000000000000000000000000000000000<br/>04/05/2010 0000000013ec5300000000000000000000000000000000000000000000000000<br/>19/05/2010 00000000159c2400000000000000000000000000000000000000000000000000<br/>29/05/2010 000000000f675c00000000000000000000000000000000000000000000000000<br/>11/06/2010 000000000eba6400000000000000000000000000000000000000000000000000<br/>24/06/2010 000000000d314200000000000000000000000000000000000000000000000000<br/>06/07/2010 000000000ae49300000000000000000000000000000000000000000000000000<br/>13/07/2010 0000000005a3f400000000000000000000000000000000000000000000000000<br/>16/07/2010 000000000168fd00000000000000000000000000000000000000000000000000<br/>27/07/2010 00000000010c5a00000000000000000000000000000000000000000000000000<br/>05/08/2010 0000000000ba1800000000000000000000000000000000000000000000000000<br/>15/08/2010 0000000000800e00000000000000000000000000000000000000000000000000<br/>26/08/2010 0000000000692000000000000000000000000000000000000000000000000000<br/><br/>date, difficulty factor, % change<br/>2009 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 1.00<br/>30/12/2009 &nbsp; &nbsp; 1.18 &nbsp; +18%<br/>11/01/2010 &nbsp; &nbsp; 1.31 &nbsp; +11%<br/>25/01/2010 &nbsp; &nbsp; 1.34 &nbsp; &nbsp;+2%<br/>04/02/2010 &nbsp; &nbsp; 1.82 &nbsp; +36%<br/>14/02/2010 &nbsp; &nbsp; 2.53 &nbsp; +39%<br/>24/02/2010 &nbsp; &nbsp; 3.78 &nbsp; +49%<br/>08/03/2010 &nbsp; &nbsp; 4.53 &nbsp; +20%<br/>21/03/2010 &nbsp; &nbsp; 4.57 &nbsp; &nbsp;+9%<br/>01/04/2010 &nbsp; &nbsp; 6.09 &nbsp; +33%<br/>12/04/2010 &nbsp; &nbsp; 7.82 &nbsp; +28%<br/>21/04/2010 &nbsp; &nbsp;11.46 &nbsp; +47%<br/>04/05/2010 &nbsp; &nbsp;12.85 &nbsp; +12%<br/>19/05/2010 &nbsp; &nbsp;11.85 &nbsp; &nbsp;-8%<br/>29/05/2010 &nbsp; &nbsp;16.62 &nbsp; +40%<br/>11/06/2010 &nbsp; &nbsp;17.38 &nbsp; &nbsp;+5%<br/>24/06/2010 &nbsp; &nbsp;19.41 &nbsp; +12%<br/>06/07/2010 &nbsp; &nbsp;23.50 &nbsp; +21%<br/>13/07/2010 &nbsp; &nbsp;45.38 &nbsp; +93%<br/>16/07/2010 &nbsp; 181.54 &nbsp;+300%<br/>27/07/2010 &nbsp; 244.21 &nbsp; +35%<br/>05/08/2010 &nbsp; 352.17 &nbsp; +44%<br/>15/08/2010 &nbsp; 511.77 &nbsp; +45%<br/>26/08/2010&nbsp; &nbsp;623.39&nbsp; &nbsp;+22%<br/></div> text/html