bitcoin

安装 就位 cd /usr/local/ 安装依赖 yum install -y wget yum install -y autoconf yum install -y automake yum install -y libtool yum install -y gcc gcc-c++ gcc-g77 yum install -y openssl-devel yum install -y boost-devel yum install -y libevent-devel 数据库和钱包版本是有一定的搭配的，我这里用的是0.17.1配4.8.30，如果你要用其他版本，有可能需要折腾一下。 下载解压 berkeley-db安装包（这是我存储的云端文件） wget http://file.fengyumeng.com/db-4.8.30.tar.gz tar -zxvf db-4.8.30.tar.gz 如果你需要其他版本的话可以到这里去找： https://www.oracle.com/database/technologies/related/berkeleydb-release-history.html 切目录 cd db-4.8.30/build_unix/ 配置 ../dist/configure --enable-cxx --disable-shared --with-pic

I am trying to make a basic authenticated api call to their new v2 api and getting an invalid api key error returned. I reissued the api key just to verify, same error. from time import time import urllib.request import urllib.parse import hashlib import hmac APIkey = b'myapikeyyouarenotsupposedtosee' secret = b'myceeeeecretkeyyyy' url = 'https://api.bitfinex.com/v2/auth/r/wallets' payload = { #'request':'/auth/r/wallets', 'nonce': int(time() * 1000), } paybytes = urllib.parse.urlencode(payload).encode('utf8') print(paybytes) sign = hmac.new(secret, paybytes, hashlib.sha512).hexdigest() print

In my knowledge, bitcoin is a p2p protocol and a p2p protocol must have a dedicated central server . But it is said that bitcoin is decentralized . Back in 2009 we relied on IRC to bootstrap the network, so every node would connect to Freenode (later LFnet) and would join a channel. Their nicknames were their encoded public IP address. Nowadays the Bitcoin Core client, and many other implementations, rely on DNS seeds. DNS seeds are special DNS servers that are configured to return a number of randomly selected nodes from the network. The operators of the DNS seeds also run crawlers to

How do I check a balance of a Bitcoin address (any, not necessarily mine), let's say in a Java application (or any other language)? I need a functionality like the one on blockchain.info or biteasy.com but I don't want to use their API. Bitcoin is open source, so I thought maybe it won't be so difficult to get the data myself? Use blockexplorer.com model and piggy back off their server or run your own using open source version at github.com/lirazsiri/blockexplorer For now there is no simple way to get balance of a address that not in the wallet with bitcoin core. Maybe this function is under

I'm developing with localbitcoin API and i am using path “/api/dashboard/closed/” and this is my code: <?php function localbitcoinsquery($path, $nonce,array $req = Array()) { global $random; $key='mykey'; $secret='secretkey'; if ($req) { $get=httpbuildquery($req); $path=$path.'?'.$get; } $postdata=$nonce.$key.$path; $sign = strtoupper(hashhmac('sha256', $postdata, $secret)); $headers = array( 'Apiauth-Signature:'.$sign, 'Apiauth-Key:'.$key, 'Apiauth-Nonce:'.$nonce ); $ch = null; $ch = curlinit('https://localbitcoins.com'.$path); curlsetopt($ch, CURLOPTRETURNTRANSFER, true); curlsetopt($ch,

I was wondering if there was any way to make a Parser in PHP in which gets the values from this site https://btc-e.com/api/2/btc_usd/ticker and sets them as variables in php code? I have looked at php parsers a bit and the only thing I found was parsers that echo all the information on a website. Since that URL returns a JSON response: <?php $content=file_get_contents("https://btc-e.com/api/2/btc_usd/ticker"); $data=json_decode($content); //do whatever with $data now ?> You can use file_get_contents to get the data from the URL and json_decode to parse the result, because the site you have

I want to send a "Keep alive from client" message every 30 seconds for my websocket connection. Here's what the code that I have in my websocket initializer looks like: ws = WebSocket::Client::Simple.connect 'wss://bitcoin.toshi.io/' ws.on :message do |msg| rawJson = msg.data message_response = JSON.parse(rawJson) end ws.on :open do ws.send "{\"subscribe\":\"blocks\"}" end ws.on :close do |e| puts "WEBSOCKET HAS CLOSED #{e}" exit 1 end ws.on :error do |e| puts "WEBSOCKET ERROR #{e}" end Without any sort of 'keep alive', the connect closes in about 45 seconds. How should I send the 'heart-beat'