qbig

# Javascript Node CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-javascript/ for more details
#
#
version: 2
jobs:
  build:
    docker:
      # specify the version you desire here

qbig

require 'digest/sha2'

# -----------------
# Utility Functions
# -----------------

# The hash function used in mining (convert hexadecimal to binary first, then SHA256 twice)
def hash256(data)
  binary = [data].pack("H*")
  hash1 = Digest::SHA256.digest(binary)

qbig

/**

	This is almost identical to the articles
	VM
  https://github.com/felixangell/mac/blob/master/mac.c
**/

#include <stdio.h>
#include <stdbool.h>

qbig

Glossary

Addresses

Used to receive and send transactions on the network. An address is a string of alphanumeric characters, but can also be represented as a scannable QR code. They are derived from the public/private ECDSA key pair.

Agreement Ledgers

Distributed ledgers used by two or more parties to negotiate and reach and agreement.

qbig

package util

import (
    "math/big"
    "reflect"
    "regexp"
    "strconv"

    "github.com/ethereum/go-ethereum/common"
    "github.com/ethereum/go-ethereum/common/hexutil"

qbig

geth --rpc --shh --ws

qbig

go get -d github.com/ethereum/go-ethereum
go install github.com/ethereum/go-ethereum/cmd/geth
go install github.com/ethereum/go-ethereum/cmd/swarm
geth account new
export BZZKEY=970ef9790b54425bea2c02e25cab01e48cf92573
swarm --bzzaccount $BZZKEY

qbig

package main

import (
    "context"
    "fmt"
    "log"
    "math/big"

    "github.com/ethereum/go-ethereum/accounts/abi/bind"
    "github.com/ethereum/go-ethereum/accounts/abi/bind/backends"

qbig

package main

import (
    "bytes"
    "crypto/ecdsa"
    "fmt"
    "log"

    "github.com/ethereum/go-ethereum/common/hexutil"
    "github.com/ethereum/go-ethereum/crypto"

qbig

package main

import (
    "fmt"
    "log"

    "github.com/ethereum/go-ethereum/common/hexutil"
    "github.com/ethereum/go-ethereum/crypto"
)