Jepsen's latest distributed systems safety report covers Radix DLT 1.0-beta.35.1 through 1.0.2. We found stale, aborted, and intermediate reads, as well as the partial or total loss of committed transactions. Transactions could also hang indefinitely.
I'm not sure how widespread this understanding is in the DLT space (still looking for a citation for RDX Works's definition) but the researchers I've talked to were unanimous: losing committed transactions *is* a safety error, even if every validator agrees to throw away data.
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