Arash Fatahzade iRhonin

Sepolia is now on PoS

As of 2022/7/6, Sepolia has switched to PoS. The window to do some mining has closed.

Testnets after merge (original, old content from here)

It's mid 2022, Ethereum is still PoW and motoring towards merge / PoS. Surviving testnets will be Sepolia - currently PoW - and Goerli. Ropsten will be merged and then deprecated, Rinkeby and Kovan won't be merged.

I want to "get ready" for some Sepolia testing pre- and post-merge. Sepolia will not have a public validator set; testing post-merge will be limited to running applications on it. As Sepolia is PoW, I can actually go mine myself some SepplETH. Here's how.

Writing an apt proxy conf file /etc/apt/apt.conf.d/proxy.conf as below.

Acquire::http::Proxy "socks5h://127.0.0.1:1080";
Acquire::https::Proxy "socks5h://127.0.0.1:1080";
Acquire::socks::Proxy "socks5h://127.0.0.1:1080";

And the proxy settings will be applied the next time we run apt.

Exporting your 2FA tokens from Authy to transfer them into another 2FA application

IMPORTANT - Update regarding deprecation of Authy desktop apps

Past August 2024, Authy stopped supported the desktop version of their apps:
See Authy is shutting down its desktop app | The 2FA app Authy will only be available on Android and iOS starting in August for details.

And indeed, after a while, Authy changed something in their backend which now prevents the old desktop app from logging in. If you are already logged in, then you are in luck, and you can follow the instructions below to export to tokens.

If you are not logged in anymore, but can find a backup of the necessary files, then restore those files, and re-install Authy 2.2.3 following the instructions below, and it should work as expected.

	# Python script that signs EIP712 structs that can be validated
	# by EVM smart contracts.
	#
	# Copyright (c) 2021 Alexis Robert <[email protected]>
	#
	# Dependencies:
	# coincurve==15.0.1
	# eip712-structs==1.1.0

	import os

	import requests
	import json

	# DOCS: https://idpay.ir/web-service/v1.1/index.html


	class IDPay:

	API_URL = "https://api.idpay.ir/v1.1/payment"

	registry:
	restart: always
	image: registry:latest
	ports:
	- 443:5000
	environment:
	REGISTRY_HTTP_TLS_CERTIFICATE: /certs/domain.crt
	REGISTRY_HTTP_TLS_KEY: /certs/domain.key
	REGISTRY_AUTH: htpasswd
	REGISTRY_AUTH_HTPASSWD_PATH: /var/lib/registry/passfile

	pragma solidity ^0.4.24;


	contract ECDSA {

	function verify() public returns (bool) {
	bytes32 message = ethMessageHash("TEST");

	bytes memory sig = hex"bceab59162da5e511fb9c37fda207d443d05e438e5c843c57b2d5628580ce9216ffa0335834d8bb63d86fb42a8dd4d18f41bc3a301546e2c47aa1041c3a1823701";
	address addr = 0x999471bb43b9c9789050386f90c1ad63dca89106;

	#!/bin/bash
	target=${1:-http://example.com}
	while true # loop forever, until ctrl+c pressed.
	do
	for i in $(seq 100) # perfrom the inner command 100 times.
	do
	curl $target > /dev/null & # send out a curl request, the & indicates not to wait for the response.
	done

	wait # after 100 requests are sent out, wait for their processes to finish before the next iteration.

	import os.path
	import re

	'''
	INSTRUCTIONS
	1. Create a file with the following code
	2. Put the file you want to convert into the same folder as it, and rename it to "py_file.py"
	3. Add a "#F" comment to any lines in the code which have a function call that doesn't assign anything (so no =),
	as the program cannot handle these convincingly
	4. Run the converter file

	# Crontab
	# once per week backup, move to "/backup" gzip it, delete everything but the latest 5 files
	0 4 * * 1 /opt/gitlab/bin/gitlab-ci-rake gitlab:backup:create CRON=1 && mv /var/opt/gitlab/backups/* /backup/ && cd /backup && gzip *.tar && rm `ls -t \| awk 'NR>5'`