for Bittrex, the attacker was able to trade their BTG on Bittrex and withdraw other crypto. Let us know your thoughts in the comments below! September 1, 2018 Announcement, we regret to inform our community that the crypto exchange Bittrex has decided to de-list BTG after we declined to pay them 12,372 BTG to remain listed. The attacks on exchanges in May were not the result of any fault or flaw in the BTG blockchain or code (which are essentially the same as the Bitcoin code.) The attackers rented massive hashpower through the NiceHash rental market (perhaps aided by their own. Bittrex informed us that they make this decision because the BTG team would not take responsibility for our chain, and that taking responsibility meant paying Bittrex 12,372 BTG to cover the loss they incurred. In this type of attack, the thieves gained the majority control of BCGs network hashrate, allowing them to modify transactions on the blockchain. Respectfully yours, The Bitcoin Gold Organization, appendix A: Actions the BTG team took during the attack, in chronological order. In the end, they made off with approximately 18 million worth of BCG at the time.
Everyone knows 51 attacks and Double-Spends have always been a known risk in the PoW blockchain world, said the Bitcoin Gold team, The attackers bear responsibility for their attacks. It was mined by honest miners.).
Several hours later, Bittrex allowed them to trade that BTG and withdraw some amount of other coins, and then the attackers used the 51 attack to double-spend those BTG, invalidating their original deposit. We are retiring wallets that do not have markets : Bitcoin Gold (BTG) and Bitcoin Private (btcp). . We shared the exact wallet address from which the Double-Spend attacks were being made, as well as the mining addresses being used for the 51 attacks. While in control of the network, the hackers reportedly sent over 388,000 BTG (18 million at the time of the hack) worth of double-spent transactions to a variety of exchanges, which allowed the attackers to swindle the same amount (388,000 BTG) from an exchange-owned wallet. (We do not know the net value of Bittrexs loss since they have not disclosed the value of the coins they allowed to be withdrawn.). The Four Day Attack, bitcoin Gold (BCG a Bitcoin 00 hard-fork released in November of 2017, is continuing to feel the negative effects from a 51 percent attack on its network in May. It is important to note that this is more than a request, as Bittrex is essentially threatening to delist all BTG trading pairs if the sum of 12,000 BTG is not paid by September 14th. We specifically advised that all Exchanges raise their confirmation requirements to give them ample time to react and that they monitor unusually large deposits of BTG the double-spend attacks were clear outliers in size.
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