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Ryan Smith ryandotsmith

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@ryandotsmith
ryandotsmith / chain-notifications.js
Created November 29, 2014 20:07
Chain Node.js Notifications Example
var express = require('express');
var bodyParser = require('body-parser');
var chain = require('chain-node');
chain.apiKeyId = 'YOUR-API-KEY-ID';
chain.apiKeySecret = 'YOUR-API-KEY-SECRET';
var app = express();
app.use(bodyParser.json());
app.post('/', function (req, res) {
@ryandotsmith
ryandotsmith / s_queue.rb
Last active August 29, 2015 14:07
Multi-threaded SQS Ruby Worker. I have tests. Maybe this is a gem? Lemme know if you find it useful.
require 'aws-sdk'
require 'json'
module SQSW
class SQueue
MissingQueue = Class.new(StandardError)
def initialize(url = nil)
raise(MissingQueue, "Missing queue_url") if url.nil?
@q = find_queue(url)
@ryandotsmith
ryandotsmith / confidence.js
Last active August 29, 2015 14:05
Demonstrate transaction confidence using Chain.com's Bitcoin API
var chain = require('chain-node');
var confidant = function(txid, retries, cb) {
chain.getTransaction(txid, function(err, resp) {
if(resp.propagation_level > 0.9) {
cb(resp.propagation_level);
} else {
if(retries > 60) {
cb(null);
} else {
@ryandotsmith
ryandotsmith / webhooks.js
Last active June 20, 2016 08:17
Chain.com Webhooks Example
/*
Chain's Webhooks system will send an HTTP request
to our app with an event type of 'address-transaction'.
The body of the request will contain Chain's transaction
object. We can use this payload to do whatever we want!
*/
app.post('/', function (req, res) {
if (req.body['event'] == 'address-transaction') {
sendSMS(req.body.transaction)
res.send('OK\n');
@ryandotsmith
ryandotsmith / cond_test.go
Last active August 29, 2015 14:04
sync.Cond test cases
package main
import (
"testing"
"sync"
"sync/atomic"
)
type EasyCond struct {
m *sync.Mutex
@ryandotsmith
ryandotsmith / output.txt
Created July 10, 2014 05:34
$ ruby x.rb
Address: 1FBVmnKtjgA676Xbatqx42dcGzaaPV4BU4 contains 4 transactions.
Address: 17j92xE73rEyexJSB4gwavd2YkpTKZWfAv contains 7 transactions.
@ryandotsmith
ryandotsmith / q.sql
Created July 9, 2014 21:28
select txn_summary(data) from txns limit 1;
@ryandotsmith
ryandotsmith / index.html
Last active August 29, 2015 14:02
An example for how to authenticate against Chain using CORS
<!doctype html>
<html>
<head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
</head>
<body>
<p>Balance: <span id="balance"></span></p>
</body>
@ryandotsmith
ryandotsmith / index.js
Last active August 29, 2015 14:01
Chain - Send Transactions API
var chain = require('chain-node');
var bitcoin = require('bitcoinjs-lib');
// The Chain API will never accept your private key.
// Keep the private key stored in a safe place alongside
// your program.
var key = new bitcoin.ECKey.fromWIF("Your private key in WIF format.")
var txn = new bitcoin.Transaction()
@ryandotsmith
ryandotsmith / keybase.md
Created March 27, 2014 23:09

Keybase proof

I hereby claim:

  • I am ryandotsmith on github.
  • I am ryandotsmith (https://keybase.io/ryandotsmith) on keybase.
  • I have a public key whose fingerprint is 2D60 72AC 8048 3B96 6F2E 5211 EC2F C28B D8ED AF6F

To claim this, I am signing this object: