The fork strong (hard fork) scheduled Bitcoin Cash, scheduled for this Friday, 15 November, generated a division of the string of blocks of the criptomoneda. So reported the signing of ecosystem monitoring of cryptocurrencies BitMex Research, in the social network Twitter.De according to the information, despite the fact that the fork was successful, a large group of miners unknown had not completed the update of its nodes. The nodes should install the new version of the client software, Bitcoin ABC 0.20.6, until the hard fork. However, once that happened, the fork strong, to the height of the block 609.135, part of the hashrate kept chipping away at the old chain, under the version of Bitcoin client ABC 0.19.0.This type of events, in blockchains that work under mechanisms of consensus proof-of-work (PoW), as Bitcoin Cash, was heard in a sort of battle. In this case, according to some reports, the original string (Bitcoin ABC 0.19.0) mined by the unknown group, believes that the new string is not valid. In the same way, the new chain (Bitcoin ABC 0.20.06) extracted by BTC.com, considered that the old chain is invalid. However, the rules of consensus PoW you determine that the chain of blocks more long will be considered as valid.At the time of the writing of this report, each chain were produced in parallel, six blocks, five of which were mined as empty blocks on the side of the old chain. As explained by BitMex Research, this is due to a system of protection against replay attacks, implemented successfully for Bitcoin Cash, which makes the nodes to change the format of the transaction at the point of bifurcation. In accordance with the follow-up of BitMex Research, the next updated of the chain had 8.8% more hash rate than the original string. Source: @BitMEXResearch in TwitterLa research firm pointed out that after the sixth block, the old chain began to experience sharp declines in the difficulty of mining. This could be an indicator that the miners would be leaving the chain of blocks original. He further explained that, at the height of the block 609.141, “although the chain of ancient rules can produce more blocks due to the lower difficulty, the string of new rules clearly have the most hashrate”.
Bitcoin Cash successfully conducted a planned hardfork upgrade todayThe original rules chain you have now produced 6 blocks since the split & is felt sensing sharp declines in mining difficultyThe below image explains the situation https://t.co/U9hbK4peip pic.twitter.com/kraNoNOflb— BitMEX Research (@BitMEXResearch) November 15, 2019
This type of events where a blockhain is divided after a hard fork, creates significant safety risks, such as the aforementioned ” attack, repeat, or attacks of 51%. In this case, it affected the miners who were kept undermining the chain of original Bitcoin Cash, as they do not defeat the new chain, wasted resources in blocks invalid. According to calculations of BitMex Research, the opportunity cost could reach 12.5 BCH block.The update of the network of Bitcoin Cash involved a change in the set of rules of consensus. As reported Breaking News, the new version of the client adds comprehensive support to the firms Schnorr and reduces the malleability of the transactions by a third party.