greenstevester

First, you have to download and build the Bitcoin Core
------------------------
1. Clone the bitcoin source code and cd into `bitcoin`

        git clone https://github.com/bitcoin/bitcoin
        cd bitcoin

2.  Build bitcoin-core:

greenstevester

How to get on Rinkeby Testnet in less than 10 minutes

Following instructions from the excellent https://www.rinkeby.io/

Synchronizing a Full Node

A full node lets you access all state. There is a light node (state-on-demand) and wallet-only (no state) instructions as well,

greenstevester

npm uninstall -g angular-cli
npm cache clean --force
npm install -g @angular/cli@latest

greenstevester

Remove Java from the Apple System Preferences Pane
----------------------------------------------------
sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -fr /Library/PreferencePanes/JavaControlPanel.prefPane 
sudo rm -fr ~/Library/Application\ Support/Oracle/Java

Install with Homebrew
---------------------
install Homebrew if you haven't already. Make sure it is updated:

greenstevester

If you'd like to experiment with Terraform and Kubernetes on macOS locally, a great provider for doing so is the Kubernetes provider. You can get set up in a few simple steps, like so:

1. Install Docker

Install Docker for Mac if you have not already.

greenstevester

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

greenstevester

Pre-requisite:  brew

NOTE: This install is based on nvm:
see http://dev.topheman.com/install-nvm-with-homebrew-to-use-multiple-versions-of-node-and-iojs-easily/
see also http://stackoverflow.com/questions/28017374/what-is-the-suggested-way-to-install-brew-node-js-io-js-nvm-npm-on-os-x

1. brew update
2. brew install nvm
3. Create NVM's working directory if it doesn't exist:
   mkdir ~/.nvm

greenstevester

This ensures you have npm setup and configured correctly on osx.

see http://dreamerslab.com/blog/en/npm-basic-commands/
see https://www.sitepoint.com/beginners-guide-node-package-manager/

npm config ls -l
npm config set loglevel info
npm config set registry http://registry.npmjs.org/
npm set progress=false 
npm install --verbose

greenstevester

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

greenstevester

How to Build a Bitcoin Full Node on a Raspberry Pi 3.

What is a Bitcoin Full Node?
-------------------------------
A Bitcoin full node is much simpler than it sounds. 
A full node is simply a computer that is running the Bitcoin Core Wallet. 
The Bitcoin Core Wallet, by default, downloads a full copy of the Blockchain.

A. You'll need a 1 TB Hard Drive as of 18.12.2023, its circa 534 GB see https://www.blockchain.com/explorer/charts/blocks-size