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	<title>Bitcoin Wiki - User contributions [en]</title>
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	<updated>2026-05-05T13:09:24Z</updated>
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		<id>https://en.bitcoin.it/w/index.php?title=BitPenny&amp;diff=11249</id>
		<title>BitPenny</title>
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		<updated>2011-06-20T22:24:19Z</updated>

		<summary type="html">&lt;p&gt;Coroos: /* External Links */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;BitPenny was the first [[Pooled mining|mining pool]] to introduce a fixed-rate, instant-payout model.  The service discontinued service indefinitely as-of April 2, 2011&amp;lt;ref&amp;gt;[http://www.bitcoin.org/smf/index.php?topic=3266.msg78042#msg78042 Re: Instant-Payout Mining - BitPenny.com]&amp;lt;/ref&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
Each share submitted to BitPenny was worth a fixed (based on current [[Difficulty|difficulty]]) amount of bitcoins.  The user&#039;s account was credited immediately upon submission, and the balance was instantly available for withdrawal from the [http://www.bitpenny.com BitPenny website].  This approach shifted the risks associated with bad luck, cheating, and transaction-reversal [[Weaknesses|attacks]] from the user to the pool operator, resulting in a virtually zero-variance payout curve.&lt;br /&gt;
&lt;br /&gt;
The service was operated for-profit and thus self-insured against variances.&amp;lt;ref&amp;gt;[http://www.bitcoin.org/smf/index.php?topic=3266.0 Instant-Payout Mining - BitPenny.com]&amp;lt;/ref&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
The service was first available for beta testing starting February 08, 2011.  The second round of testing began on March 2nd, 2011.&lt;br /&gt;
&lt;br /&gt;
==Community==&lt;br /&gt;
&lt;br /&gt;
The IRC channel [irc://irc.freenode.net/bitcoin-penny #bitcoin-bitpenny] ([http://webchat.freenode.net/?channels=bitcoin-bitpenny&amp;amp;uio=d4 webchat]) offers conversation with fellow miners and information from BitPenny&#039;s operator.&lt;br /&gt;
&lt;br /&gt;
==See Also==&lt;br /&gt;
&lt;br /&gt;
* [[Pooled Mining]]&lt;br /&gt;
&lt;br /&gt;
==External Links==&lt;br /&gt;
&lt;br /&gt;
* [http://www.bitpenny.com BitPenny] web site (no longer operational)&lt;br /&gt;
&lt;br /&gt;
==References==&lt;br /&gt;
&amp;lt;references /&amp;gt;&lt;/div&gt;</summary>
		<author><name>Coroos</name></author>
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