narimantos

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No, your cryptocurrency cannot work

Whenever the topic of Bitcoin's energy usage comes up, there's always a flood of hastily-constructed comments by people claiming that their favourite cryptocurrency isn't like Bitcoin, that their favourite cryptocurrency is energy-efficient and scalable and whatnot.

They're wrong, and are quite possibly trying to scam you. Let's look at why.

What is a cryptocurrency anyway?

There are plenty of intricate and complex articles trying to convince you that cryptocurrencies are the future. They usually heavily use jargon and vague terms, make vague promises, and generally give you a sense that there must be something there, but you always come away from them more confused than you were before.

	import random
	import time

	DEAD = 0
	LIVE = 1

	def dead_state(width, height):
	"""Constuct an empty state with all cells set to DEAD.

	Parameters

	import pandas as pd
	data = pd.read_csv("file.csv", sep=",")
	print(data.head(2))
	with open('file.json', 'w') as f:
	f.write(data.to_json(orient='records', lines=True))

	# check
	data = pd.read_json("file.json", lines=True)
	print(data.head(2))

	// Uncompressed version of
	// https://gist.github.com/munificent/b1bcd969063da3e6c298be070a22b604

	#include <time.h> // Robert Nystrom
	#include <stdio.h> // @munificentbob
	#include <stdlib.h> // for Ginny
	#include <stdbool.h> // 2008-2019

	const int HEIGHT = 40;
	const int WIDTH = 80;

	#!/usr/bin/python
	from bcc import BPF
	from time import sleep

	# This outputs a count of how many times the clone and execve syscalls have been made
	# showing the use of an eBPF map (called syscall).

	program = """
	BPF_HASH(syscall);

	By default, EBPF programs will not run on WSL2 due to required kernel modules missing. The following example error is an
	indication of this problem:
	modprobe: ERROR: ../libkmod/libkmod.c:586 kmod_search_moddep() could not open moddep file '/lib/modules/4.19.84-microso
	ft-standard/modules.dep.bin'
	modprobe: FATAL: Module kheaders not found in directory /lib/modules/4.19.84-microsoft-standard
	chdir(/lib/modules/4.19.84-microsoft-standard/build): No such file or directory

	To fix this you need to rebuild the WSL2 kernel with the missing kernel modules. The below instructions are for Ubuntu 18.04 WSL2.

	1. git clone https://github.com/microsoft/WSL2-Linux-Kernel.git

	@ECHO OFF

	REM Uses the file name as the profile name
	SET MSTEAMS_PROFILE=%~n0
	ECHO - Using profile "%MSTEAMS_PROFILE%"

	SET "OLD_USERPROFILE=%USERPROFILE%"
	SET "USERPROFILE=%LOCALAPPDATA%\Microsoft\Teams\CustomProfiles\%MSTEAMS_PROFILE%"

	REM Ensure there is a downloads folder to avoid error described at