const sb = _apply.call(origAddSB, this, arguments);
const addChunk = (chunk) = {，这一点在爱思助手下载最新版本中也有详细论述
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How does blockchain work?Blockchain records digital information and distributes it across the network without changing it. The information is distributed among many users and stored in an immutable, permanent ledger that can't be changed or destroyed. That's why blockchain is also called "Distributed Ledger Technology" or DLT.，详情可参考im钱包官方下载