alexvandesande

contract random {
    /* Generates a random number from 0 to 100 based on the last block hash */
    function randomGen(uint seed) constant returns (uint randomNumber) {
        return(uint(sha3(block.blockhash(block.number-1), seed ))%100);
    }

    /* generates a number from 0 to 2^n based on the last n blocks */
    function multiBlockRandomGen(uint seed, uint size) constant returns (uint randomNumber) {
        uint n = 0;
        for (uint i = 0; i < size; i++){

alexvandesande

/*

The contract is free software: you can redistribute it and/or modify
it under the terms of the GNU lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

The contract is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

alexvandesande

/*

# Time Locked Multisig

This is a different twist on the Congress DAO / Multisig. Instead of every action requiring the approval of an X number of members, instead any transactions can be initiated by a single member, but they all will require a minimum amount of delay before they can be executed, which varies according to the support that transaction has. The more approvals a proposal has, the sooner it can be executed. A member can vote against a transaction, which will mean that it will cancel one of the other approved signatures. In a 5 members DAO, each vote means the time to wait dimishes by 10x.

This means that if you don't have urgency, one or two signatures might be all you need to execute any transaction. But if a single key is compromised, other keys can delay that transaction for years, making sure that the main account is emptied out way before that.

Transaction delays:

alexvandesande

pragma solidity ^0.4.2;

contract ethernalSale {
    struct order {
        uint amount;
        address buyer;
    }
    
    mapping (uint => order) orderBook;
    mapping (address => uint) balanceOf;

alexvandesande

pragma solidity ^0.4.20;

contract MyToken {
    /* This creates an array with all balances */
    mapping (address => uint256) public balanceOf;

    /* Initializes contract with initial supply tokens to the creator of the contract */
    function MyToken(
        uint256 initialSupply
        ) public {

alexvandesande

Most emojis 
		                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 

alexvandesande

/*

  Foundation Tip Contract
  
  Address: 0xfb6916095ca1df60bb79ce92ce3ea74c37c5d359
  Bitcoin Shapeshift Address: 1GyczDXWjFbmhx2Qau4ham3zJqNEP8UcEG  (if transaction fails it is sent to 39BaMQCphFXyYAvcoGpeKtnptLJ9v6cdFY instead)
  Interface: [{"constant":true,"inputs":[{"name":"","type":"uint256"}],"name":"proposals","outputs":[{"name":"recipient","type":"address"},{"name":"amount","type":"uint256"},{"name":"description","type":"string"},{"name":"votingDeadline","type":"uint256"},{"name":"executed","type":"bool"},{"name":"proposalPassed","type":"bool"},{"name":"numberOfVotes","type":"uint256"},{"name":"currentResult","type":"int256"},{"name":"proposalHash","type":"bytes32"}],"type":"function"},{"constant":false,"inputs":[{"name":"proposalNumber","type":"uint256"},{"name":"transactionBytecode","type":"bytes"}],"name":"executeProposal","outputs":[{"name":"result","type":"int256"}],"type":"function"},{"constant":true,"inputs":[{"name":"","type":"address"}],"name":"memberId","outputs":[{"name":"","type":"uint

alexvandesande

Abstract

One of the biggest pain point for users in ethereum:

• users don't want to think about ether
• users don't want to think about backing up private keys or seed phrases
• users need to set up 2 factor authentication to be secure
• users want to be able to have a simple identifiable username
• users want to be able to pay for transactions using what they already have on the system, be apple pay, xbox points or even a credit card
• users want to use the same username accross multiple devices in a trustless manner

alexvandesande

Address: 0xdbf03b407c01e7cd3cbea99509d93f8dddc8c6fb

ABI:        
 [ { "constant": true, "inputs": [ { "name": "", "type": "uint256", "typeShort": "uint", "bits": "256", "displayName": "", "template": "elements_input_uint", "value": "" } ], "name": "proposals", "outputs": [ { "name": "recipient", "type": "address" }, { "name": "amount", "type": "uint256" }, { "name": "description", "type": "string" }, { "name": "votingDeadline", "type": "uint256" }, { "name": "executed", "type": "bool" }, { "name": "proposalPassed", "type": "bool" }, { "name": "numberOfVotes", "type": "uint256" }, { "name": "currentResult", "type": "int256" }, { "name": "proposalHash", "type": "bytes32" } ], "type": "function", "displayName": "proposals" }, { "constant": false, "inputs": [ { "name": "proposalNumber", "type": "uint256", "typeShort": "uint", "bits": "256", "displayName": "proposal Number", "template": "elements_input_uint" }, { "name": "transactionBytecode", "type": "bytes", "typeShort": "bytes", "bits": "", "displayName": "tra

alexvandesande

/*

    One of the takeaways I had from the ENS workshop, is that if buying domains 
    from secundary services is easy and quick, it will take the pressure off the 
    main ENS system to be perfect. So since I didn’t see any decent reselling 
    contract I decided to try my luck on my own. It's not yet finalized but shows
    some characteristics I want on the service.
    
    ## Both instant buy and actions
    One of the feedbacks I had is that many domain owners do not know how to price