amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 07, 2015, 06:32:51 PM |
|
|
|
|
|
|
|
|
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction.
|
|
|
|
2112
Legendary
Offline
Activity: 2128
Merit: 1068
|
|
July 07, 2015, 06:56:26 PM Last edit: July 07, 2015, 07:19:43 PM by 2112 |
|
This block crashes many web-based blockchain browsers, including the linked one. So the relevant information is: 1) mined by Chinese pool f2pool 2) contains only 2 transactions: coinbase and single regular one 3) the regular one has no fees, but 5569 inputs and 1 one output. It appears to mop up dust outputs for a total of BTC0.05569000 4) it probably should get a medal for UTxO minification 5) the total block size is 999,923 bytes Edit: Nothing to add, just quoting the reply from Danny in case he changes it: This block crashes many web-based blockchain browsers, including the linked one.
So the relevant information is:
1) mined by Chinese pool f2pool 2) contains only 2 transactions: coinbase and single regular one 3) the regular one has no fees, but 5569 inputs and 1 one output. It appears to mop up dust outputs for a total of BTC0.05569000 4) it probably should get a medal for UTxO minification 5) the total block size is 999,923 bytes
The BTC0.05569000 total is paid to the same address as the coinbase transaction. As such, it would appear that the transaction was built by the pool, and that the entire transaction is fees.
|
|
|
|
DannyHamilton
Legendary
Offline
Activity: 3388
Merit: 4653
|
|
July 07, 2015, 07:02:21 PM |
|
This block crashes many web-based blockchain browsers, including the linked one.
So the relevant information is:
1) mined by Chinese pool f2pool 2) contains only 2 transactions: coinbase and single regular one 3) the regular one has no fees, but 5569 inputs and 1 one output. It appears to mop up dust outputs for a total of BTC0.05569000 4) it probably should get a medal for UTxO minification 5) the total block size is 999,923 bytes
The BTC0.05569000 total is paid to the same address as the coinbase transaction. As such, it would appear that the transaction was built by the pool, and that the entire transaction is fees.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 07, 2015, 07:08:59 PM |
|
The BTC0.05569000 total is paid to the same address as the coinbase transaction. As such, it would appear that the transaction was built by the pool, and that the entire transaction is fees.
captain obvious detected
|
|
|
|
|
|
NUFCrichard
Legendary
Offline
Activity: 1218
Merit: 1003
|
|
July 07, 2015, 08:33:31 PM |
|
So just getting all of someones satoshis together takes up an entire block and crashes block explorers? Why is it being marked as a double spend by blockchain.info?
Seems weird to me, with stress tests and forks recently there have been a few mishaps in the last few days, this seems like another.
|
|
|
|
|
2112
Legendary
Offline
Activity: 2128
Merit: 1068
|
|
July 07, 2015, 08:45:19 PM |
|
Now that you posted a link it got jinxed and crashes/hangs too. Kinda cool way to show the weakness of the "web-based services" paradigm: they can't tell the sudden spike of popularity from a garden-variety DDoS. And all this added JavaScript sauce, it could really serve as an example how not to design UI widget architectures.
|
|
|
|
newIndia
Legendary
Offline
Activity: 2212
Merit: 1049
|
|
July 07, 2015, 09:09:07 PM |
|
Now that you posted a link it got jinxed and crashes/hangs too. Kinda cool way to show the weakness of the "web-based services" paradigm: they can't tell the sudden spike of popularity from a garden-variety DDoS. And all this added JavaScript sauce, it could really serve as an example how not to design UI widget architectures. It is still not crashing at my end. In case, it is crashing at your end, here is a list of alternatives...
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 07, 2015, 09:16:02 PM |
|
OK, there are 330k such outputs in blockchain now One block can reduce this number by 5569 So we need 60 blocks in a row filled by 1 tx just to eliminate these spam outputs from a blockchain By the way, bitcoin has not yet died even after three months of your death prediction. I was wrong. It will die soon.
|
|
|
|
newIndia
Legendary
Offline
Activity: 2212
Merit: 1049
|
|
July 07, 2015, 09:19:52 PM |
|
By the way, bitcoin has not yet died even after three months of your death prediction. I was wrong. It will die soon. Soon does not mean anything. Give us a specific period like you did last time and we'll meet again
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 07, 2015, 09:21:25 PM |
|
Soon does not mean anything. Give us a specific period like you did last time and we'll meet again Before halving block reward.
|
|
|
|
newIndia
Legendary
Offline
Activity: 2212
Merit: 1049
|
|
July 07, 2015, 09:32:11 PM |
|
Soon does not mean anything. Give us a specific period like you did last time and we'll meet again Before halving block reward. I dont think, you have read your tarrot cards properly this time as well. Here is something I am copying from elsewhere... Previous Scenario :- 2012 end: Block reward halving 2013 beginning: Hard Fork 2013 mid: Cyprus crisis 2013 end: Bitcoin reached ATH Current Scenario :- 2015 mid: Greece crisis 2016 beginning: Hard Fork 2016 mid: Block reward halving 2016 end: ? ? ? You might like to place a bet on your prediction on bitbet.us as well
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 07, 2015, 09:37:19 PM |
|
You might like to place a bet on your prediction on bitbet.us as well What is a reason to bet bitcoins if they would cost nothing when (and if) I win?
|
|
|
|
2112
Legendary
Offline
Activity: 2128
Merit: 1068
|
|
July 07, 2015, 09:48:25 PM |
|
It is still not crashing at my end. In case, it is crashing at your end, here is a list of alternatives...
The crash/hang is actually a symptom of the site activating its DDoS defenses. If you are on an ISP with few bitcoiners the DDoS defenders are unlikely to activate the throttle/reduction and other defenses. You may be also accessing that site during the time when most of the people are asleep in your area. Thanks for the alternate links, but please be aware of the above issues when posting easily clickable links. I have a proxy/vpn on the opposite side of the Globe, that does succeed loading that page.
|
|
|
|
bitcoinmasterlord
Legendary
Offline
Activity: 1148
Merit: 1006
|
|
July 08, 2015, 01:48:18 PM |
|
Wouldn't these spamtransactions be lost after some time when no miner includes them in a block?
I know that this would mean that the miner had to keep all transactions in the RAM but i think it's better to adjus the RAM instead giving in to spam.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 08, 2015, 01:52:48 PM |
|
Wouldn't these spamtransactions be lost after some time when no miner includes them in a block?
Miners love these txs because the fee is 0.0002 per kb today
|
|
|
|
Taras
Legendary
Offline
Activity: 1386
Merit: 1053
Please do not PM me loan requests!
|
|
July 08, 2015, 03:57:39 PM Last edit: July 08, 2015, 04:22:47 PM by Taras |
|
Just got another 1 MB transaction from Discus Fish!
edit: I think TradeBlock and Blockchain.info got taken down at around the same time as this
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 08, 2015, 04:09:01 PM |
|
Just got another 1 MB transaction from Discus Fish!
364423 0000000000000000058319fa2282779aada74b249369ecf9baa7ffaed3e11fb0 2015-07-08 17:49 2 976 KB 25.05569000 364422 000000000000000000283e9409575c2426cd72fcb722065431c52b5083e5bb58 2015-07-08 17:45 2 976 KB 25.05569000This is very useful mining work Sending 5k spam outputs takes ~34 * 5k = ~170 kilobytes to spamer Redeeming them takes 1 megabyte I have bad news for you.
|
|
|
|
macbook-air
|
|
July 08, 2015, 05:41:03 PM |
|
OK, there are 330k such outputs in blockchain now One block can reduce this number by 5569 So we need 60 blocks in a row filled by 1 tx just to eliminate these spam outputs from a blockchain By the way, bitcoin has not yet died even after three months of your death prediction. I was wrong. It will die soon. Many of the addresses are compressed. 5569 is the number for uncompressed.
|
|
|
|
unamis76
Legendary
Offline
Activity: 1512
Merit: 1009
|
|
July 08, 2015, 06:53:25 PM |
|
Not getting what's up with these 1mb transactions mined by F2Pool... At least they are achievements and someone failing in trolling
|
|
|
|
btcash
|
|
July 08, 2015, 07:02:09 PM |
|
Why are these transactions so big? With 5569 inputs they should have ~ 805 kb instead of 976 kb (5569*143/1024). Seems like the IsDust() calculation is broken. Size is 20% bigger than expected.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 08, 2015, 07:04:58 PM |
|
OK, there are 330k such outputs in blockchain now One block can reduce this number by 5569 So we need 60 blocks in a row filled by 1 tx just to eliminate these spam outputs from a blockchain Many of the addresses are compressed. 5569 is the number for uncompressed. Update: we have ~520k these spam/dust UTxO in blockchain as of block #364447
|
|
|
|
btcash
|
|
July 08, 2015, 07:28:56 PM |
|
OK, there are 330k such outputs in blockchain now One block can reduce this number by 5569 So we need 60 blocks in a row filled by 1 tx just to eliminate these spam outputs from a blockchain Many of the addresses are compressed. 5569 is the number for uncompressed. Update: we have ~520k these spam/dust UTxO in blockchain as of block #364447How do you get these numbers? Are all spam tx send to the adresses with the know private key?
|
|
|
|
DannyHamilton
Legendary
Offline
Activity: 3388
Merit: 4653
|
|
July 08, 2015, 07:44:13 PM |
|
With 5569 inputs they should have ~ 805 kb instead of 976 kb (5569*143/1024).
I suspect that many of these inputs are using uncompressed public keys. As such the input size for those inputs will be 180 bytes. ((5569*180) + (44 bytes of transaction overhead and outputs))/1024 = 978 kb.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 08, 2015, 08:11:44 PM |
|
|
|
|
|
btcash
|
|
July 08, 2015, 09:08:38 PM |
|
There definitly needs to be something done. Mining all these tx isn't the solution.
Breakdown of the costs: BTC spend by the spammer: - Outputs: 5.2 BTC (520000*0.00001, could have been done cheaper, the minium allowed by bitcoin core is 0.00000560) - Tx Fees: 3.51 BTC (520000/40*0.00027, could have also been done cheaper) -> 8.72 BTC (2310 $)
"Costs" for the network: If no one would pick them up: - UXTO bloat: 19.83 MB (520000*40/1024*1024) - Additional disk bloat: ~ 20 MB - Confirmation delay: 40,000 tx got delayed 1 block (2000 tx * 20 blocks, since the spam filled 20 blocks) - Network traffic: 468.75 GB (probably much more, only calculated with full nodes, 40 MB * 6000 nodes * 2 / 1024)
With pickup: - UXTO bloat: 0 - Additional disk bloat: 110 MB (20 + 90 MB, 90 MB created by picking up the tx) - Confirmation delay: 220000 tx got delayed 1 block (2000 tx * 110 blocks, since the spam filled 110 blocks) - Network traffic: 1289 GB (probably much more, only calculated with full nodes, 110 MB * 6000 nodes * 2 / 1024)
If this guy starts investing more money or if more people start this we have a serious problem.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 08, 2015, 09:49:40 PM |
|
If this guy starts investing more money or if more people start this we have a serious problem. This problem is well known. Tragedy of the commonsblock #364470 dust/spam utxo= 558159 ( 5.58159000 btc )
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 09, 2015, 04:29:20 AM |
|
block #364505 dust/spam utxo=584343 ( 5.84343000 btc )
|
|
|
|
bitcoinmasterlord
Legendary
Offline
Activity: 1148
Merit: 1006
|
|
July 09, 2015, 05:49:29 PM |
|
Wouldn't these spamtransactions be lost after some time when no miner includes them in a block?
Miners love these txs because the fee is 0.0002 per kb today Doesn't sound like they could get rich from it since these are huge transactions isn't it? And the total fees wouldn't be worth it i think. I wonder what i would do as a miner. There are some that don't include any transaction because they then have an advantage propagating their block with the nodes. They don't care about the fees at all.
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 09, 2015, 06:31:06 PM |
|
block #364583 dust/spam utxo=683383 ( 6.83383000 btc )
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 10, 2015, 06:37:07 AM |
|
block #364649 dust/spam utxo=790472 ( 7.90472000 btc )
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 10, 2015, 06:42:18 PM |
|
block #364739 dust/spam utxo=824463 ( 8.24463000 btc )
|
|
|
|
newIndia
Legendary
Offline
Activity: 2212
Merit: 1049
|
|
July 10, 2015, 07:14:13 PM |
|
block #364583 dust/spam utxo=683383 ( 6.83383000 btc )
block #364649 dust/spam utxo=790472 ( 7.90472000 btc )
block #364739 dust/spam utxo=824463 ( 8.24463000 btc )
Looks like the more these spam takes place, the more price will go up to make the spam costlier. We just tested 295 on preev. Price has touched 357 USD on Huobi. Keep spamming
|
|
|
|
amaclin (OP)
Legendary
Offline
Activity: 1260
Merit: 1019
|
|
July 10, 2015, 07:28:54 PM |
|
Looks like the more these spam takes place, the more price will go up This part of forum is for development & technical discussion. Not about trading.
|
|
|
|
newIndia
Legendary
Offline
Activity: 2212
Merit: 1049
|
|
July 10, 2015, 07:49:40 PM |
|
Looks like the more these spam takes place, the more price will go up This part of forum is for development & technical discussion. Not about trading. Not for 'Speculation' either... which means it takes a little bit of RAM on every full node for the next centuries.
Centures? Are you joking? No doubt that bitcoin will die earlier I think - this year We have a dedicated sub-section for that => https://bitcointalk.org/index.php?board=57.0
|
|
|
|
bitcoinmasterlord
Legendary
Offline
Activity: 1148
Merit: 1006
|
|
July 13, 2015, 10:56:08 PM |
|
block #364583 dust/spam utxo=683383 ( 6.83383000 btc )
block #364649 dust/spam utxo=790472 ( 7.90472000 btc )
block #364739 dust/spam utxo=824463 ( 8.24463000 btc )
Looks like the more these spam takes place, the more price will go up to make the spam costlier. We just tested 295 on preev. Price has touched 357 USD on Huobi. Keep spamming I don't think that the spammers are affected by the bitcoin price. They most probably have their stash of coins and they don't buy them at an exchange on the run. The costs are the same regardless of the bitcoin price. I wonder who does the spam. Does Hearn and Gavin have big pockets? They want their Bitcoin XT. Maybe they funded this.
|
|
|
|
|