Changes to “Rounds, timing and windows”
#67 (zoobc.how, 2026-10-26 20:39 UTC) → #110 (zoobc.how, 2026-10-26 20:44 UTC): Seed article updated
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- After a stall of more than an hour (the 3,600-second recovery limit), a block is still accepted when it comes from the producer the draw expects, so a halted chain can start again.
+ Two windows are involved. A producer drawn in round *i* must stamp its block within that round's *creation window*, from 7 seconds before the round's target to 27 seconds after it, which reaches into the next round. Validators also require the stamp to lie in the acceptance window of the round it falls in, with the 2 seconds of tolerance.
− The producer's own software works with a wider *creation window*, from 7 seconds before its round's target to 27 seconds after it. What counts at validation is the round the stamp falls in and that round's acceptance window.
## Local timing policy
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