Analysis flags vardiff controller flaw that can waste miner power
- —The flaw concerns pool-assigned share difficulty, not Bitcoin network difficulty
- —After a sharp hashrate drop, a share-triggered controller may not recalculate difficulty
- —The Stratum V2 reference implementation lowers difficulty on a timer, avoiding a freeze
- —ckpool is cited as a deployed share-triggered example of the behavior
Why it matters: Miners risk unpaid intervals when curtailing power; MARA's shape-proxy tool lets operators test controller recovery directly.
Source: Cryptonews.net