知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 With past implementation cell wallets would have to transform 4k+ pubkeys for the v19 fork position Which can easily consider 10-15 seconds if not more. Also, once the v19 Challenging Fork, if a masternode checklist is asked for from a block prior to the v19 Hard Fork, https://livepriceofcrypto.com