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blueplanet / bitcoind-ubuntu-install

Created June 17, 2020 11:58

Install Bitcoind Ubuntu

	Add repository and install bitcoind

	sudo apt-get install build-essential
	sudo apt-get install libtool autotools-dev autoconf
	sudo apt-get install libssl-dev
	sudo apt-get install libboost-all-dev
	sudo add-apt-repository ppa:bitcoin/bitcoin
	sudo apt-get update
	sudo apt-get install bitcoind
	mkdir ~/.bitcoin/ && cd ~/.bitcoin/

blueplanet / file0.txt

Last active September 15, 2018 22:12

EOS の Docker Quickstart に加えて、Account を作成するまでやってみた ref: https://qiita.com/blueplanet/items/62669b69377a031f5271

	"Id": "sha256:8926b83923b11e8ea6e6be1c8f96f941fcd7731238273b2bed692b407e37fd3c",
	"RepoTags": [
	"eosio/eos-dev:latest"
	],
	"RepoDigests": [
	"eosio/eos-dev@sha256:150cab925ca326293a82518bcd7d1a3cbbd5720f7e12f4545c6a616819083ab2"
	],
	"Parent": "",
	"Comment": "",
	"Created": "2018-09-12T00:24:34.401119021Z",

blueplanet / file0.html

Last active June 19, 2018 00:52

iView の Table コンポネントで画像を render する方法 ref: https://qiita.com/blueplanet/items/748d255507cbe79246d1

	<template>
	<div>
	<Table :columns="columns" :data="tokens"></Table>
	</div>
	</template>

	<script>
	export default {
	data () {
	return {

blueplanet / file0.txt

Created April 18, 2018 00:43

QMK Firmware を使って ErgodoxEZ を設定する ref: https://qiita.com/blueplanet/items/715dc7d9e1bf207fec66

	brew tap osx-cross/avr
	brew tap PX4/homebrew-px4
	brew update
	brew install avr-gcc
	brew install dfu-programmer
	brew install gcc-arm-none-eabi
	brew install avrdude

blueplanet / erc20.sol

Last active May 24, 2018 21:56

	pragma solidity ^0.4.21;

	contract EIP20 {
	uint256 constant private MAX_UINT256 = 2**256 - 1;
	uint256 public totalSupply;
	mapping (address => uint256) public balances;
	mapping (address => mapping (address => uint256)) public allowed;
	string public name; //fancy name: eg Simon Bucks
	uint8 public decimals; //How many decimals to show.
	string public symbol; //An identifier: eg SBX

blueplanet / file0.txt

Created February 2, 2018 14:13

スマートコントラクトの定時実行を調べてみた ref: https://qiita.com/blueplanet/items/bb9effd226106dd39344

	contract PackedArray {
	uint[] public arrays;

	function push(uint[] _args) public {
	arrays = _args;
	}

	function remove(uint index) public {
	PackedArray(this).pack(arrays, index);
	}

blueplanet / file0.txt

Created December 23, 2017 14:17

イーサリアムの Whisper を使ってみる ref: https://qiita.com/blueplanet/items/6947a04406fa74401457

	geth -dev --ws --wsport 8546 --wsaddr 0.0.0.0 --wsorigins "*" --wsapi "eth,web3,shh" console

	// 上記コマンドで起動したconsoleで下記を実行して、symKeyの値をメモしておく
	> web3.shh.newSymKey()
	"6a255cd62f2f9989119a60ea0cac6aa71aba479e99a49cff8a6eade669f1e44e"
	>

blueplanet / file0.txt

Created December 22, 2017 14:42

コントラクトの Event を監視してみる ref: https://qiita.com/blueplanet/items/460f562235019a1bb07d

	pragma solidity ^0.4.17;

	contract MyToken {
	event Deposit(
	address indexed _from,
	bytes32 indexed _id
	);

	function deposit(bytes32 _id) public {
	// deposit pproc

blueplanet / file0.txt

Created December 21, 2017 14:28

イーサリアムのスマートコントラクト、ビットコインのような複数署名できる？ ref: https://qiita.com/blueplanet/items/1d81302f35e426e81485

	pragma solidity ^0.4.17;

	contract MultiVoteTransfer {
	address[] voterAddresses;
	mapping(address => bool) votes;
	bool public transfered;

	modifier onlyVoter() {
	bool isVoter = false;

blueplanet / file0.txt

Created December 20, 2017 08:26

アップデートできるスマートコントラクトを実装してみました ref: https://qiita.com/blueplanet/items/b639a90b44288eb29c9e

	pragma solidity ^0.4.17;

	contract InnerContract {
	function say() public pure returns (bytes32) {
	return "first ver";
	}
	}

	contract MyContract {
	address public owner;

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