maraoz

{
 0: 'tench, Tinca tinca',
 1: 'goldfish, Carassius auratus',
 2: 'great white shark, white shark, man-eater, man-eating shark, Carcharodon carcharias',
 3: 'tiger shark, Galeocerdo cuvieri',
 4: 'hammerhead, hammerhead shark',
 5: 'electric ray, crampfish, numbfish, torpedo',
 6: 'stingray',
 7: 'cock',
 8: 'hen',

maraoz

import { ethers } from "hardhat";
import { Signer } from "ethers";

import WalletConnectProvider from "@walletconnect/web3-provider";

async function deploy(deployer: Signer) {

  const address = await deployer.getAddress();
  console.log("Deploying contracts with the account:", address);
  console.log("Account balance:", (await deployer.getBalance()).toString());

maraoz

var bitcore = require('bitcore');

var password = 'an example of an insecure password';
var privateKey = bitcore.util.sha256(password);

var key = new bitcore.Key();
key.private = privateKey;
key.regenerateSync();

var addr = new bitcore.Address.fromKey(key);

maraoz

# wiki page
https://en.bitcoin.it/wiki/Contract

# Nick Szabo essays
http://szabo.best.vwh.net/smart_contracts_idea.html
http://szabo.best.vwh.net/smart.contracts.html
http://szabo.best.vwh.net/micropayments.html

# secure multiparty computation in bitcoin
https://eprint.iacr.org/2013/784.pdf

maraoz

0xb0145Ae156D201d6E371d07265FE3C045071c967

maraoz

OP_DEPTH 3 OP_EQUAL
OP_IF
  OP_HASH160 <hash160(R)> OP_EQUALVERIFY
  OP_0 2 <AlicePubkey1> <BobPubkey1> 2 OP_CHECKMULTISIG
OP_ELSE
  OP_0 2 <AlicePubkey2> <BobPubkey2> 2 OP_CHECKMULTISIG
OP_END

maraoz

// Proof of Existence contract, version 1
contract ProofOfExistence {
  // state
  bytes32 proof;


  // constructor
  function ProofOfExistence() {
  }

maraoz

geth --testnet --rpc console 2>> geth.log

maraoz

# First, let's install truffle
$ sudo npm install -g truffle

# let's setup our project
$ mkdir solidity-experiments
$ cd solidity-experiments/
$ truffle init

$ ls
app  contracts  migrations  test  truffle.js

maraoz

> eth.getBalance(eth.accounts[0])
0