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opening an old wallet. dat - Bitcoin Stack Exchange I had about $8 USD worth of bitcoin in a wallet, and I backed up the wallet dat to my dropbox According to the modified date of the file this was in April 2013, so it was probaby from bitcoin qt v
Merkle tree structure for 9 transactions - Bitcoin Stack Exchange a b c d e f g h i i At each level of the tree, if it's odd, then you just copy the last element onto the back of the tree, and then you hash the pairs to produce a new list at about half the size
矩阵的逆怎么算？逆矩阵公式来了 (附逆矩阵计算器) 其中 I 是单位矩阵。求逆矩阵通常可以通过以下几种方法： 1 高斯-约当消元法 这是最常用的方法，通过行变换将矩阵 A 转换为单位矩阵，同时对单位矩阵进行相同的行变换，最终单位矩阵变为 A^-1。 2 伴随矩阵法 对于一个 n×n 的矩阵 A，其逆矩阵可以通过以下公式计算：