Тод спрашивает в своей бумаге:

The rippled codebase suggests that in some circumstances account balances
can be negative. What are those circumstances exactly?

Действительно, какие это обстаятельства?
Вот еще класный кусок

Additionally while the author did
not have sufficient time to investigate this point fully, the source code doesn’t
appear to have any provision for reorganizations of the ledger when a longer
fork is detected.
IOTA - scam
The disclosure that one of Japan’s biggest cryptocurrency exchanges lost about $400 million in NEM tokens is spooking investors in a country still wary of such venues four years after the collapse of Mt. Gox.
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