Some Kraken futures limit orders can still execute after a successful cancellation if the cancel arrives during the Maker Protection hold window. Kraken converts the held placement to immediate-or-cancel, allowing execution at the original release time but preventing an unfilled remainder from resting on the order book. Kraken expanded Maker Protection on Oct. 8, completing Phase 2 after announcing 61 additional perpetual contracts. Automated traders need to reconcile the order's execution response as well as the cancellation acknowledgment.