According to a number of developers, miners, and researchers, the bitcoin mining business Marathon Digital (MARA) has produced an invalid bitcoin block at height 809478.
An anonymous Bitcoin engineer named “0xB10C” claimed on X that MaraPool has a “transaction ordering issue,” and Jameson Lopp, a co-founder of CasaHODL, corroborated this claim.
Other node operators rejected the incorrect Bitcoin block. According to BitMEX Research, the block was invalidated because it had a transaction that was improperly sequenced with a spending output transaction.
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