Ethereum’s Beacon Network Deals With a 7-Block Chain Reorganization

On May 25, seven blocks were reorganized on Ethereum’s Beacon chain at 8:55:23 a.m. (UTC) at block height 3,887,075 all the way to block 3,887,081. The reorganization was discovered by Martin Köppelmann who noted the “current attestation strategy of nodes should be reconsidered to hopefully result in a more stable chain.” Ethereum’s Beacon Chain Reorgs … Read more

An In Depth Look at Bitcoin’s First Chain Split: Satoshi Helps Reverse the Creation of 184 Billion BTC

Since January 3, 2009, the Bitcoin network has been functional for 99.98662952015% of the time. However, the protocol has had a few hiccups along the way and on a few occasions, the chain split into two. Most people are well aware of the Bitcoin Cash split that took place on August 1, 2017, but the … Read more

Grin Network Victim of 51% Attack, Unknown Miner Commands 58% of the Hashrate

The privacy-centric cryptocurrency network Grin (GRIN) has been the victim of a 51% attack according to a number of reports. Allegedly an unknown entity gained control of over 57% of the network hashrate on Saturday. According to the Grin website, the team is recommending people wait for “extra confirmations on transactions for payment finality.” On … Read more

Ethereum Classic Suffers 51% Attack Again: Delisting Risk Amplified

Beleaguered Ethereum Classic (ETC) blockchain suffered yet another 51% attack on August 29. The latest attack caused the reorganization of over 7,000 blocks and this corresponds to approximately two days of mining. At the time of reporting, it was not clear if there had been any double-spending as was the case in the last attack. … Read more

$5.6 Million Double Spent: ETC Team Finally Acknowledges the 51% Attack on Network

The Ethereum Classic (ETC) blockchain network lost $5.6 million to one miner following a 51% attack initially thought to be a chain split. During the attack, the offending miner managed to double-spend 807,260 ETC ($5.6 million) after spending 17.5 BTC or $200,000 (at time of writing) to acquire the hash power for the attack. The … Read more