Gavin Andresen - 2011-11-16 22:52:15

Neither of those addresses are valid according to my bitcoind:

Code:
$ bitcoind validateaddress 1AYSPTVt8WytG12Kz9guUpXjwAMFZG9CJh
{
    "isvalid" : false
}
$ bitcoind validateaddress 1AYSPTVt8WytG12Kz9guUpXjeAMFb7AX2K
{
    "isvalid" : false
}

The checksum in addresses is 4 bytes, so there is a one-in-four-billion chance that a random typo would get you a valid address.