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Jeff Petersen JeffreyBPetersen

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@JeffreyBPetersen
JeffreyBPetersen / shialignment.html
Last active September 11, 2015 02:38
Threw this together to generate a phone background for a friend.
<!doctype html>
<html>
<head>
<meta name="viewport" content="width=device-width, height=device-height, initial-scale=1.0, maximum-scale=1, user-scalable=0">
<style>
body {
margin: 0;
padding: 0;
}
img {
@JeffreyBPetersen
JeffreyBPetersen / SimplePublicLedgerConcept.sol
Last active May 5, 2016 20:54
// thoughts on how this might work, not tested
contract SimplePublicLedgerConcept {
struct Update {
string field;
string newValue;
string oldValue;
uint timeUpdated;
}
@JeffreyBPetersen
JeffreyBPetersen / experiment.sol
Created May 10, 2016 23:56
gas cost experiment
contract Experiment {
mapping (bytes32 => string) keyValueStore;
string single;
function setKeyValue(string key, string value){
keyValueStore[sha3(key)] = value;
}
function updateSingleValue(string value){
@JeffreyBPetersen
JeffreyBPetersen / spoilers
Last active May 14, 2016 07:39
please answer this security question whats my name
my first half is what it is my second half is half of what made it
AGMS x2
BHNT x3
CIOUV
EKQXZ
FLRY
tetragon: false
stars
@JeffreyBPetersen
JeffreyBPetersen / browserWeb3.html
Created May 14, 2016 01:51
<!doctype html>
<html>
<head>
<!--
get web3.js from here: https://raw.githubusercontent.com/ethereum/web3.js/master/dist/web3.js
and put it in the same directory as this. GitHub blocks using it directly.
-->
<script src='web3.js'></script>
</head>
<body>
@JeffreyBPetersen
JeffreyBPetersen / on-decentralized-storage.html
Last active May 18, 2016 00:18
<!doctype html>
<html>
<head>
<style>
body {
background-color: #EEF;
margin: 4em;
max-width: 64em;
}
</style>
@JeffreyBPetersen
JeffreyBPetersen / DigitalSignatureManager.sol
Created May 18, 2016 02:08
// use account addresses as signing keys
// include dates with signatures
// automatically handle and enforce key expirations once declared
contract DigitalSignatureManager {
// given a cryptographic hash of a document, store who has signed it and when
mapping (bytes32 => mapping (address => uint)) public datedSignatures;
// whether a signing key has been revoked and when, 0 for unrevoked
@JeffreyBPetersen
JeffreyBPetersen / customGenesis.json
Last active May 19, 2016 00:05
based on http://adeduke.com/2015/08/how-to-create-a-private-ethereum-chain/
{
"nonce": "0xdeadbeefdeadbeef",
"timestamp": "0x0",
"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"extraData": "0x0",
"gasLimit": "0x8000000",
"difficulty": "0x400",
"mixhash": "0x0000000000000000000000000000000000000000000000000000000000000000",
"coinbase": "0x3333333333333333333333333333333333333333",
"alloc": {
@JeffreyBPetersen
JeffreyBPetersen / blankSlateNightMode.css
Created June 3, 2016 23:10
Blank Slate night-mode
/* added to blankslate.io using stylebot on chrome */
html, button, input, select, textarea {
background-color: #000;
color: #DDD;
}
.status-bar {
background-color: #000;
color: #464646;
@JeffreyBPetersen
JeffreyBPetersen / DemocraticMembershipPublishingGroup.sol
Last active June 12, 2016 21:40
Draft contracts for creating lists which members can publish to and that can be joined with majority approval of existing members.
/*
draft
would benefit from getters for all variables in production version
*/
contract PublishingListRecord {
struct Post {
address poster;
string content;