Sublime

The ability to derive a branch of public keys from an xpub is very useful, but it comes with a potential risk. Access to an xpub does not give access to child private keys. However, because the xpub contains the chain code, if a child private key is known, or somehow leaked, it can be used with the chain code to derive all the other child private k

Many Bitcoin implementations use the libsecp256k1 cryptographic library to do the elliptic curve math.

The future use of Bitcoin for small payments will likely not be carried out over the distributed ledger, as explained in the discussion on scaling in Chapter 10, but through second layers. Bitcoin can be seen as the new emerging reserve currency for online transactions, where the online equivalent of banks will issue Bitcoin‐backed tokens to users

In crypto, the price follows this weird (but structured) feedback loop where it actually increases the fundamental value by rising.The rising price creates more interest, which leads to new ideas, new startups, and new projects who ultimately feedback into a positive price again due to the innovation happening.


What´s a Blockchain? A virtual

Prices are information, trade is speech, and the capital stock is a literary corpus. Which is to say, Bitcoin is the internet, extended to the communication of value, furiously wrestling value back from the feudal client/server architecture of fractional reserve and central banking. The Bitcoin Protocol / Lightning Network Protocol (LNP/BP) is the