Memo - Post by BitcoinCash

BitcoinCash

replied 2093d

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changyong

SHA256(a.zip)= d38ce06832f7a48b7a2b1e13dac0e21ef7064a962b4e80e1c97d08715d96a3b9

这是昌用老师在上课？

changyong

replied 2090d

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把一个文件的哈希值放到链上，存证。