Bitcoin mining company Marathon Digital (MARA) has mined an invalid Bitcoin block at height 809478, according to several developers, miners and researchers.
Anonymous Bitcoin developer "0xB10C" wrote on X that MaraPool had a "transaction ordering issue," this was confirmed by CasaHODL co-founder Jameson Lopp.
Now @MarathonDH mined an invalid block at 809478 on mainnet. I observed the block on 9 out of 9 nodes.ERROR: ConnectTip: ConnectBlock 000000000000000000006840568a01091022093a176d12a1e8e5e261e4f11853 failed, bad-txns-inputs-missingorspent, CheckTxInputs: inputs missing/spent https://t.co/SoIfTl1CXe pic.twitter.com/VeqGZjCVhK
— 0xB10C (@0xB10C) September 27, 2023
The invalid Bitcoin block was rejected by other node operators. The block contained a transaction that was ordered incorrectly with a spending output transaction, thus the block was invalidated, according to BitMEX Research.
Marathon Digital did not immediately respond to CoinDesk's request for comment.
