Cancel user's all offers directly on server side. This is an off-chain cancel. If someone stored your offer's signature before the off-chain cancel, he could still accept the offer before its signature expires. It's highly suggested you do the on-chain and off-chain cancel at the same time to avoid any risk.

This is an off-chain cancel. If someone stored your offer's signature before the off-chain cancel, he could still accept the offer before its signature expires. It's highly suggested you do both the on-chain and off-chain cancel at the same time to avoid any risk.

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