[errcorrectcode]

Suppose some piece of infrastructure along the way lacks a checksum or ECC, and gets hit by a cosmic ray or a hardware defect. You now have +2^17 USD - txamount more or 2^19 - 2^18 USD + txamount less in said account. Throw FDIC insurance out the window because they're probably a) not going to do it and b) stick you with fees and losses.

[agucova]

This seems interesting, but I doubt this would be a vulnerability of any properly redundant digital coin.

[errcorrectcode]

Anywhere non-ECC storage or computation occurs before it hits hashing or distributed, it's a SPoF.

[jtsiskin]

…I imagine the whole thing wouldn’t be running off a single server + hard drive. There’s not any conceivable system design where this bit flip would be possible