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Topic: Bitcoin in danger!? Received <Sent!?! - page 2. (Read 4936 times)

administrator
Activity: 5222
Merit: 13032
February 09, 2012, 09:59:47 PM
#12
Notice that tx 0018417e23... and fae8bfd6a2... on that address ledger spend the exact same output. It looks like a double-spend, but it's actually a less severe bug in the protocol that probably doesn't allow for any easy attacks. (Because the bug causes very strange behavior, though, it might allow for attacks that have not been thought of yet.)

These transactions actually broke Bitcoin Block Explorer when they first appeared because there was a database constraint preventing double-spends from being inserted into the database. I "fixed" it by removing the constraint, but this causes BBE to display these transactions strangely. A lot of code would need to be changed, but I might fix it fully some day.
hero member
Activity: 714
Merit: 500
February 09, 2012, 09:59:03 PM
#11
No worries.
legendary
Activity: 1652
Merit: 2301
Chief Scientist
February 09, 2012, 09:27:33 PM
#10
Don't panic.

roconnor has been experimenting with spending "duplicate coinbase transactions" on the testnet.  Block explorer is confused, and isn't seeing the 50 bitcoins generated to that address in testnet block 45,442 (because the generation transaction has the same ID as the generation transaction in block 45,333).

Expect code changes before the 0.6 release is final to discourage and eventually prohibit accepting blocks with duplicate coinbase transactions; although we can't see a way to exploit this weirdness to cheat anybody (it is easy to cheat yourself out of bitcoins using duplicate coinbase transactions that cannot be spent), it's definitely not a good thing.
legendary
Activity: 873
Merit: 1000
February 09, 2012, 08:42:13 PM
#9
bip -1
to compete with the banking system, bitcoin now supports overdrafts.   any overdraft will cost you in fees enough to pad a new bonus system to overly compensate the bitcoin executives at the top.

seriously though ..., this is a problem somewhere, right?  (but is isolated to whatever code blockexplorer is using for testnet only, right?)
hero member
Activity: 784
Merit: 1000
bitcoin hundred-aire
February 09, 2012, 08:31:59 PM
#8
negative balance.. oh dear
hero member
Activity: 560
Merit: 500
February 09, 2012, 08:28:51 PM
#7
Are they testing out a new BIP? This could be due to a bug in a BIP someone is trying to implement and why I am an advocate of an excessive level of testing on testnet before it ever makes it to the real bitcoind.
legendary
Activity: 1386
Merit: 1004
February 09, 2012, 08:08:29 PM
#6
Bitcoin test-net
See  http://blockexplorer.com/testnet/address/mtoKs9V381UAhUia3d7Vb9GNak8Qvmcsme
Received BTC: 152.7792
Sent BTC: 202.7792
50BTC sent to more than got it!?!?
50 BTC block reward. 
newbie
Activity: 43
Merit: 0
February 09, 2012, 07:47:24 PM
#5
What is the difference of the Bitcoin and  Bitcoin TestNet? Technically, nothing! So it can happen in Bitcoin
legendary
Activity: 2058
Merit: 1452
February 09, 2012, 07:46:39 PM
#4
lol Cheesy
legendary
Activity: 873
Merit: 1000
February 09, 2012, 07:41:27 PM
#3
before anyone misunderstands ... this is on testnet and not the bitcoin blockchain
hero member
Activity: 533
Merit: 501
February 09, 2012, 07:36:30 PM
#2
Doesn't that mean you gave it to the miner?
newbie
Activity: 43
Merit: 0
February 09, 2012, 07:32:47 PM
#1
Bitcoin test-net
See  http://blockexplorer.com/testnet/address/mtoKs9V381UAhUia3d7Vb9GNak8Qvmcsme
Received BTC: 152.7792
Sent BTC: 202.7792
50BTC sent to more than got it!?!?
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