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<div class="sg-post-des">
 Marathon said the bug emanated from its experimental mining pool used to research ways to optimize operations. 
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<div class="cointelegraph">
 Bitcoin mining firm Marathon Digital has confirmed it mined an invalid&nbsp; Bitcoin (BTC) block during an “experiment” aimed at optimizing the firm’s operations.
 In a Sept. 27 post, Marathon said&nbsp;it utilizes a small percentage of the firm’s hashrate toward these <a rel="dofollow" title="experiment" href="https://thebittimes.com/tag/experiment.html">experiment</a>s and stressed they weren’t trying to alter the network in any way:
 “In no way was this experiment an attempt to alter Bitcoin Core in any way.” Marathon said, emphasizing that they corrected the error as soon as they noticed the invalid block.
 <blockquote class="twitter-tweet">
 We can confirm that Marathon did mine an <a rel="dofollow" title="invalid" href="https://thebittimes.com/tag/invalid.html">invalid</a> <a rel="dofollow" title="block" href="https://thebittimes.com/tag/block.html">block</a>. We utilize a small portion of our hash rate to <a rel="dofollow" title="experiment" href="https://thebittimes.com/tag/experiment.html">experiment</a> with our development pool and research potential methods to optimize our operations. The error was the result of an unanticipated bug that came from one of our…— Marathon Digital Holdings (NASDAQ: MARA) (@MarathonDH) September 27, 2023
 </blockquote> 
 Marathon said the bug, which emanated from the firm’s internal development environment, wasn’t related to Marathon’s Bitcoin production pool or Bitcoin Core — the leading software used to connect to the Bitcoin network and run a node.
 The incident occurred on Sept. 26 at 9:42 pm UTC on <a rel="dofollow" title="block" href="https://thebittimes.com/tag/block.html">block</a> 809478, according to mempool.space.
 Several Bitcoin developers, along with BitMEX Research attributed the <a rel="dofollow" title="invalid" href="https://thebittimes.com/tag/invalid.html">invalid</a> <a rel="dofollow" title="block" href="https://thebittimes.com/tag/block.html">block</a> to a “transaction ordering issue.” Bitcoin developer “mononaut” believes Marathon mistake came from resorting the transactions in order of ascending absolute fees.
 <blockquote class="twitter-tweet">
 This is what MARA's invalid block at 809478 looks like: - pink transactions no longer exist in the main chain - blue transactions are invalid due to ordering (they spend an output from a transaction included later in the block) https://t.co/SJI1azOB5Z pic.twitter.com/5gY9TRA2eG— mononaut (@mononautical) September 27, 2023
 </blockquote> 
 Bitcoin analyst Dylan LeClair suggested that Marathon should have conducted this experiment on a testnet before attempting it on Bitcoin’s mainnet.
 In reflection, Marathon said Bitcoin “functioned exactly as designed” by excluding the invalid block:
 <blockquote>
 “This incident, while unintended, underscores the robust security of the Bitcoin network, which rejected and rectified the anomaly.”
 </blockquote>
 Related: Marathon Digital Q2 results miss revenue and earnings forecasts
 Cointelegraph reached out to Marathon for comment but did not receive an immediate response.
 Marathon’s (MARA) share price fell 2.91% to $8.01 during opening hours on Sept. 27, according to Google Finance.
 Magazine: ‘Elegant and ass-backward’: Jameson Lopp’s first impression of Bitcoin
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Source: <a rel="dofollow" target="_blank" href="https://thebittimes.com/bitcoin-miner-marathon-mines-invalid-block-in-failed-experiment-tbt64268.html">https://thebittimes.com/bitcoin-miner-marathon-mines-invalid-block-in-failed-experiment-tbt64268.html</a>

Bitcoin miner Marathon mines invalid block in failed ‘experiment’

TheBitTimes

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