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Hero MemberActivity: 700Merit: 500 Re: CoinWallet.eu Stress Test Cancelled + Bitcoin Giveaway September 12, 2015, 08:24:41 AM #421



https://www.blocktrail.com/BTC

Quote Optimal Fee / Kb

0.00112178 BTC

And the mempool's size won't go down as well. Maybe this giveaway was just a scapegoat for coinwallet to take the stress test upon themselves. That's really a bad time to test those 'smart fees'. The stress test was very successful at increasing the optimal/Kb fee for giving transactions a high priority.And the mempool's size won't go down as well. Maybe this giveaway was just a scapegoat for coinwallet to take the stress test upon themselves.

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NewbieActivity: 13Merit: 0 Bitcoin September 12, 2015, 06:12:34 PM #427



Well done!



https://www.youtube.com/watch?v=4r7wHMg5Yjg



Should we thank coinwallet for having shown the world that the bitcoin network flawlessly handled this attack? ;-)



Now back to the normal proceeding aka to the moon. So the stress test is over and the honey badger of money didn't care!Well done!Should we thank coinwallet for having shown the world that the bitcoin network flawlessly handled this attack? ;-)Now back to the normal proceeding aka to the moon.

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NewbieActivity: 13Merit: 0 Re: CoinWallet.eu Stress Test Cancelled + Bitcoin Giveaway September 12, 2015, 06:49:06 PM #429 I still have one technical question: Some miners started to put the UTXOs from the giveaway into their blocks as 0.0 BTCs transactions. This effectively means the giveaways's BTCs go straight to the miner.



This then means that any pending unconfirmed transaction which mentions the same UTXOs becomes invalid and should be thrown out of the mempool. How is this actually happening? Does each node check all the unconfirmed transactions after a new block is accepted in the chain?



As the private keys are public and as such the UTXOs known. Each node could already proactively throw out those transactions cause miners would always decide in their own favor when confronted with the question: "Should I put this spam transaction into the block so that it benefits someone else or should I direct the coins to my self instead?". Doing so would bring back the mempool size back to normal quickly.



Btw: The people who imported the keys into their normal wallets might be in trouble if the wallet software decides to place incoming BTCs to an address from the giveaway.

thebohemian



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NewbieActivity: 13Merit: 0 Re: CoinWallet.eu Stress Test Cancelled + Bitcoin Giveaway September 12, 2015, 08:51:46 PM #433 Quote from: rz20 on September 12, 2015, 06:56:57 PM Did any transaction confirmed because I didn't receive anything yet and I did it when the op posted the private keys.

Any miner who sees your transaction is confronted with this question: "Should I put this spam transaction into the block so that it benefits someone else or should I direct the coins to my self instead?"



So what would you do if you were a miner?



Scraping the private keys from this thread is dead easy (especially if you use this handy URL:



Disclaimer: I earned 0.11 mBTC (yes, milli-BTC) from two transactions that happened at the beginning of this stress test and that got confirmed. Participating in this folly made me better understand how all this stuff works. I used bitcoinj which I never touched before. Anyone in need of an IT freelancer with bitcoinj knowledge? Any miner who sees your transaction is confronted with this question: "Should I put this spam transaction into the block so that it benefits someone else or should I direct the coins to my self instead?"So what would you do if you were a miner?Scraping the private keys from this thread is dead easy (especially if you use this handy URL: https://bitcointalk.org/index.php?action=profile;u=553487;sa=showPosts . Creating the public keys is part of EC-key math magic and then you can look up the UTXOs. So every miner who has a spare minute can simply write a script that modifies the next best incoming spam transaction, set the output value to zero (incoming value turns into a mining fee) and "bye bye".Disclaimer: I earned 0.11 mBTC (yes, milli-BTC) from two transactions that happened at the beginning of this stress test and that got confirmed. Participating in this folly made me better understand how all this stuff works. I used bitcoinj which I never touched before. Anyone in need of an IT freelancer with bitcoinj knowledge?