You mean fool proof? If you do it, it proves you're a fool.

Does their temperatures differ by about 15 deg C? Current readings could be wrong if they don't. If they do first slot is on top so card has worse cooling due to hot air from lower one. Back in 2011 or 2012 someone noticed that 59xx 7xxx cards took several a lot of watts more when they were hot (60 40 deg to 80deg). Apparently power leakage gets worse with smaller process node.
https://bitcointalk.org/index.php?topic=77533.0

In theory you can embed messages into transactions but it's frowned upon because it bloats blockchain. Most clients have "sign message" functionality, you could use instead, sign some message using address (technically private key corresponding to that address) used in your transaction and sent message with signature to their email.
Note: you should sign only unambiguous messages and avoid signing stuff that looks like random crap you got from Nigerian prince.

Messages are sometimes embedded into transactions that go into blockchain if it's important to have proof that something was written around the time block was mined, most people pay extra miners fee for this and embed hash of their message for privacy and/or to have less bloat.

Yeah, bitcoinica in 2011 is the oldest I remember. Now there is MPEx, 796 and probably several others.

You know what would be cool? Borkedcoin where every instance of sha256 in bitcoin protocol is replaced by md5 (Merkle tree and pow), so we can see what happens when sha256 gets broken, all for science ofc.
If I get enough dogecoins I might go bother someone to do it. Donations accepted at
DASncMk96prpKkQq78nD5Bt4yCxqTt9sCb
M4xjwzTVh9p5ZTbd32hk4PjZVzwL8hoCZo
71rWBUxmzsQy3iGMzcCRpF9nNvZDFNHwju
AJMcqcr1AKvYy1ymKWzbEBdvBdW3CvHTZw
LQ56cujQMzcX64ouQYkQmZmF4mZPwuRuJW
N9fp3KCeq2tFmtrQj5geQ7vHsFCTeyPcU1
18mnnMqqJvt5oKkhvHqmghwogKEZ2rmQ8e

DHNpfv9aywC84JHXt4eAoBMEJCvhfhgrgi
much coin

DHNpfv9aywC84JHXt4eAoBMEJCvhfhgrgi
thx

Certificate patrol warned me today that your certificate changed, was it normal occurrence or I'm MITM'ed?
Previous one was:
Issued 25.06.2013
Expires 26.06.2014
SHA1 B2:FA:A2:BB:BB:23:34:AD:D9:54:FA:89:42:78:2F:B0:21:FB:5A:23
MD5  E6:74:7B:B7:00:0F:12:34:71:9C:5D:E3:BE:87:D6:1C
Today:
Issued 17.12.2013
Expires 18.12.2014
SHA1 20:6D:37:0F:8F:A6:86:98:36:97:47:FE:46:71:AD:4A:1E:4B:E8:52
MD5 AF:75:5E:94:46:06:36:3E:5C:E6:33:5F:17:B1:3F:B6

No u didn't this 24 rounds paper they reference is from 2012.

That's like 128 times better than brute force. Still billions of times longer than till heat death of universe.
Note that if they refine attack to something usable for type 0 Kardashev civilization we will have to change hash used in building Merkle tree, not POW so ASICs can stay as they are (at least until hashes get reaaaly low). Also I think that all altcoins use SHA256 for transactions.

If they have root access and know you have some bitcoins they will be able to manually lobotomize all antivirus software. Have you tried GMER? If still nothing you should boot from Hiren's BootCD (download and burn it from other machine of course) or nuke your system.

Flipping the chain is more question whether UTXO changes can be calculated and verified in miliseconds so blocks can propagate fast.

Fliping the blockchain means doing proof of work on UTXO (it will be merged minned) so that new nodes won't have to download whole blockchain to verify new transactions. Currently 0.8x qt nodes calculate their own UTXO when downloading blockchain, with flipped chain POWed UTXO can be downloaded directly after downloading blockheaders. Of course some well budgeted organisations (NSA) will prefer to have complete record of all transations (and some good blockexplorer available to employees).

Bandwidth is more expensive than storage. I could see nodes storing UTXO and random old blocks (software with slider on how many old blocks do you want to retain)  if flipping the chain was impossible for some reason.

Someone was working on flipping the blockchain, apparently design phase is over but there were no updates since 4 months. Two years ago there were estimates that 90% of blockchain can be pruned.

How about spring 2012? For two months rate was ~5.1 it was eternity in bitcoin time there were people trying to get excited when rate moved 0.03$ (0.006%) that's less volatility in BTC/USD than it is normal between fiat currencies.
I see that you registered 11 April, something tells me you must be very butthurt.

Are we talking about the same bitcoin? Last time I checked every longer period of stability ended in massive (~20x) rally.

https://bitcointalk.org/index.php?topic=52206.0 back in 2011

Nope, litecoin doesn't have magical ability to transmute CNY to USD at rate closer than bitcoin to that used to calculate this gap.
Apparently someone buying bitcoin on our side of the wall, selling them beyond the wall and paying for stuff he wants imported not only saves on fees but also gets like 12% discount for exchange rate. I guess that's the price of risk of getting caught in volatility (like some definitely doing this were caught in april).

Brainwallet.com gives no result.
Did you mean bitaddress.org?

It appears that you first sent 0,02 and then used this input in next transaction and the same address as change, that means that you sent 0,02 to 1Hds...ex and then used this 0,02 to sent 0,01 to 16b...nrp and 0,01 back to 1Hds..ex. Blockchain.info apparently won't add this sent back to same address to total received. Reusing sending address to act as a change address is not standard behaviour and makes you easier to track.

A guy who used sha256 of poem written in exotic language as private key lost his brainwallet recently, so yeah you could make your own dictionary, maybe someone thinks that nobody will think about using password directly as key or MD5 of passwd and you will be the one who will teach him a lesson about security practices. Be creative in choosing which keys to check and you might hit big. Of course properly generated private keys are safe (well until you use them with bad RNG).


That could actually work quite well. Or at step 2 propose something to be added to dictionary.