需要激活是因为钱包里有一定余额才能用。
钱包里有一定余额才能用?
一个钱包里至少要有 75 XRP 才能保证其功能。随着用户的深入使用,用户可能会对其他用户设置一定的信任额度,每设置一个,钱包里需要保留的额度就会增加一些。这是系统防止网络攻击的一种方式: 75 XRP 的最低余额并不影响用户使用,但是想开 1 亿个钱包拖慢网络则需要 75 亿 XRP. 这是很高的代价。
参见 rippleCN 的常见问题解答: http://ripplecn.com/faq/
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