How Marathon Digital Mined an Invalid Bitcoin Block

Multiple nodes verify the transactions in the Bitcoin network. Hence, while Marathon Digital mined an invalid block, other nodes rejected it.

Bitcoin network runs through the distributed ledger technology (DLT). The other nodes can easily detect an error by a single node, which will cancel the invalid block through the consensus mechanism.

How Marathon Digital Mined Invalid Block

While the company has been in the Bitcoin mining business for over a decade, it still managed to mine an invalid block. But how did it happen?

According to the Bitcoin developer, 0xB10C, the invalid block was at the height of 809478. A transaction ordering issue was the primary reason for the invalid block. BitMEX Research explained the situation on X (Twitter):

“The invalid block included this txn (A)

“Spending an output from this txin (B):

“However, txin B was included in the block after txin A, therefore the block was invalid”

Later, other nodes rejected the block, and finally, Foundry USA mined the valid block.

Bitcoin uses the Distributed Ledger Technology, wherein transactions’ data are decentralized and distributed. The screenshot below shows that while Peer A mined an invalid node, Peer B and Peer C can verify it. They follow the consensus mechanism, and the invalid block is finally rejected.

Read more: What is Distributed Ledger Technology

Marathon Digital’s invalid block incident indicated that the Bitcoin network is indeed tamper-proof, leaving a minimum chance for double-spending. A community member wrote:

“The #BTC engineering never ceases to amaze me.”

Read More: How To Build a Mining Rig: A Step-by-Step Guide.

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