Satoshi Nakamoto

The previous article introduced how to use the method of throwing dice to manually create a set of mnemonic words that are truly random enough to prevent the potential pseudo-random security risks of software and hardware wallet mnemonic words. Suddenly I had an idea, is it possible to create a wallet that even if the backup is accidentally lost, we can use our own unique mnemonic generation method to restore our wallet? Of course, the premise of all this is that the mnemonic phrase generation is still sufficiently random. The first random number that comes to mind is the infinite non-cyclic number, 3.14159... For example, 1. Take a certain number from it, starting from a certain digit, we take 48 numbers, four digits as a group. For example, when I started copying coins in 2018, I would start from 2018, or whatever age I am. This is a strong connection with myself. On the one hand, it is random enough, and it is also convenient for recovery in extreme situations. 2. Then take the last 12 digits of the ID card. Because the former is far from random enough, we can add a group of numbers that are strongly related to ourselves. This is also to facilitate the extreme situation of losing the backup of the mnemonic phrase. As long as we have the only You can use your memory to restore the wallet by just remembering the mnemonic phrase generation path. For example, an ID card number has 18 digits. The first six digits are the same for people in the same place. You can take the last 12 digits and add each number to twelve groups of four digits. 3. Process these twelve groups of numbers. Because BIP39 words have a total of 2048 digits, we subtract 2048 or multiples of 2048 from the numbers greater than 2048 in the twelve groups of numbers until each group of numbers is less than 2048. 4. According to the mnemonic database on github, search the URL on Baidu and find twelve corresponding words. 5. Because the twelfth digit of the mnemonic word is special, it is a check digit and cannot be used directly. You can start from the sorted words and use an offline wallet to try to verify the words one by one in order, usually about ten times. It seems troublesome, but in fact, the matching check digit word can be found quickly, no more than thirty times at most. 6. The next step is to keep the mnemonic phrase. Mnemonic phrases can be fragmented to prevent theft. Of course, it is safe enough to put it directly in a safe at home. Surveillance cameras are everywhere these days. There are very few cases of thieves breaking into homes and stealing safes, let alone a thief who understands mnemonic phrases. .Furthermore, to prevent force majeure, such as fires, floods, and earthquakes, you can use King Kong mnemonic boards, which are waterproof, fireproof, and anti-corrosion. You can buy them on Taobao. Attached: