miguelmota

import fetch from 'isomorphic-fetch'
require('dotenv').config()

const CLOUDFLARE_ZONE_ID = process.env.CLOUDFLARE_ZONE_ID
const CLOUDFLARE_TOKEN = process.env.CLOUDFLARE_TOKEN

export class Cloudflare {
  async getRecordId(dnslinkDomain: string) {
    const url = `https://api.cloudflare.com/client/v4/zones/${CLOUDFLARE_ZONE_ID}/dns_records?name=${dnslinkDomain}`
    const res = await fetch(url, {

miguelmota

const { providers } = require('ethers')

async function main() {
  const url1 = 'https://optimism-mainnet.infura.io/v3/84842078b09946638c03157f83405213'
  const url2 = 'https://mainnet.optimism.io'
  const stallTimeout = 2 * 1000
  const options = {
    timeout: 60 * 1000,
    throttleLimit: 1
  }

cwhinfrey

ChainSwap 1

• $800k
• July 2, 2021
• Vulnerability: Smart contract bug
• Note: Users reported lost funds, ChainSwap shut down all nodes and a fix was deployed within 30 minutes.
• Source: https://chain-swap.medium.com/chainswap-post-mortem-and-compensation-plan-90cad50898ab

ChainSwap 2

• $4.4M
• July 10, 2021
• Vulnerability: Smart contract bug

miguelmota

Host db_tunnel
  HostName 1.2.3.4
  User ubuntu
  Port 22
  RemoteCommand echo 'tunnel open' && cat
  IdentityFile ~/.ssh/hop/id_rsa
  IdentitiesOnly yes
  Localforward 5432 localhost:5432

miguelmota

# gist id = c55cc3f8aba345fc80262b3707a2e2b1
git clone git@gist.github.com:c55cc3f8aba345fc80262b3707a2e2b1.git
git add .
git commit -m "Initial commit"
git remote add origin git@gist.github.com:c55cc3f8aba345fc80262b3707a2e2b1.git
git push origin main # make sure it's "main" branch

miguelmota

const zksync = require('zksync')
const { formatUnits } = require('ethers/lib/utils')

const addresses = [
  '0x123....'
]

const decimals = {
  USDC: 6,
  USDT: 6

miguelmota

const { BigNumber, Signer } = require('ethers')
const { keccak256, recoverAddress, joinSignature, resolveProperties, serializeTransaction, hashMessage, arrayify, defineReadOnly } = require('ethers/lib/utils')
const { KMSClient, GetPublicKeyCommand, SignCommand } = require('@aws-sdk/client-kms')
const asn1 = require('asn1.js')

const EcdsaPubKey = asn1.define('EcdsaPubKey', function () {
  this.seq().obj(
    this.key('algo').seq().obj(
      this.key('a').objid(),
      this.key('b').objid()

miguelmota

const bs58 = require('bs58')
const contentHash = require('content-hash')

const domain = 'app.uniswap.org'
const text = `ipns://${domain}`
const matched = text.match(/^(ipfs|ipns|bzz|onion|onion3):\/\/(.*)/) || text.match(/\/(ipfs)\/(.*)/) || text.match(/\/(ipns)\/(.*)/)
const contentType = matched[1]
const content = matched[2]

const bs58content = bs58.encode(

miguelmota

// SETINGS /////////////////////////////////////
const upstream = {
  domain: 'cloudflare-ipfs.com',
  protocol: 'https',
}

const dns = {
  domain: 'cloudflare-dns.com',
  protocol: 'https',
  path: '/dns-query',

miguelmota

# change to bspwm
xfconf-query -c xfce4-session -p /sessions/Failsafe/Client0_Command -t string -sa bspwm

# revert to xfwm4
xfconf-query -c xfce4-session -p /sessions/Failsafe/Client0_Command -t string -sa xfwm4