commits branch releases Fetching contributors MIT Latest commit a32469c Mar 22, 2017 Update README.md README.md Overview This is a collection of simple programs which can generate bitcoin wallets, create and sign transactions, and send transactions over the bitcoin network.It was a learning project for me to learn more about both golang, and the bitcoin protocol.This project consists of three programs which each contain the most basic usecase.keys.go - Generates a public/private key pair transaction.go - Creates, and signs a bitcoin transaction network.go - Connects to a peer, and sends a transaction over the network Disclaimer These programs are not "crytographically" random, and should not be used for any purpose other than educational use.Installation Install go run go get to install dependencies Follow the instructions at go-secp256k1 to compile bitcoin/c-secp256k1 Run one of the programs using the syntax below Usage Creating a key pair go run keys.go options (optional) --testnet Generating a transaction go run transaction.go options (required) --private-key yourPrivateKey --public-key yourPublicKey --destination destinationPublicKey --input-transaction inputTransactionHash --satoshis satoshisToSend options (optional) --input-index inputTransactionIndex Sending a transaction over the bitcoin network go run network.go options (required) --transaction yourTransaction --node-address 255.255.255.255 (IPv4 address of the bitcoin node to connect to) --network-address 255.255.255.255 (IPv4 address of your public IP address) options (optional) --testnet Dependencies /toxeus/go-secp256k1 This library is used for the creation of public keys from private keys, as well as signing transactions.

It is a project which wraps the official bitcoin/c-secp256k1 bitcoin library./tv42/base58 This library does the base58 conversion.I have included the base58 project in this codebase rather than importing it from the aforementioned github, because I needed to change the dictionary that was used.Resources / / /2014/02/bitcoins-hard-way-using-raw-bitcoin.html The Bitcoin wiki: https://en.bitcoin.it/ /en/developer-guide / for general transction/address searching http://blockchain.info/ for general transction/address searching https://blockchain.info/connected-nodes to see a list of connected nodes (/questions/3374/how-to-redeem-a-basic-tx) Information on redeeming a raw transaction, and explanation of fields.With its signature hardware product now shipping to users in the US, Canada and Europe, 21 Inc is seeking to roll out its next stage in development, a decentralized, bitcoin-incentivized network of the devices.21 Inc announced the launch of Ping21 today, a new proof-of-concept it envisions as a competitor to website monitoring services such as Pingdom or AlertFox.

Today, webmasters use such services to determine how a website is performing in different markets, in the case of Pingdom, paying between $13 and $454 a month for the service.What 21's grid now allows is that Bitcoin Computers all around the world to be called with a single command, a factor the company said offers advantages over the pinging networks of today.For example, a company's website might be up and running in New York, but in Florida, Spain, and South Korea, there could be problems.bitcoin code c++However, with the Ping21 service, a webmaster could issue a single command and receive the uptime and status of their website in dozens of countries.czech bitcoin hackedRather than paying the hundreds of dollars for a subscription, the cost per ping would drop significantly, the company said.litecoin open source code

By utilizing its recently launched Micropayments Marketplace, a client can submit a request to the network along with bitcoin for payment.Bitcoin Computers enrolled in the Ping21 service will then be automatically contacted to perform a ping, check the website, collect any necessary data and submit it back to the marketplace where the user can aggregate stats.Afters its launch, the company is focusing on allowing developers to expand on other applications for its bitcoin-incentivized grid.bitcoin escrow explained21 CEO Balaji S Srinivasan told CoinDesk: "It’s a proof-of-concept to show what kinds of services you can offer via decentralized bitcoin-incentivized grid computing and how they are qualitatively different from – and complementary to – what you can get from centralized cloud computing."bitcoin genesis blockWhile the Ping21 is one possible implementation of the bitcoin-incentivized grid, this concept of a many-to-one ping service opens up others avenues for machines to transact.ethereum criptomoneda

With each device having its own wallet, 21 Bitcoin Computers can buy and sell data in ways that would otherwise have not been possible, the company contends.Srinivasan explained that over the coming weeks, 21 would be announcing further proofs-of-concept to demonstrate how its grid could be used in applications for the Internet of Things.Tyler Pate, a software and hardware engineer at 21, echoed this larger vision stating that he expects 21 users to innovate by exploring new ways to monetize data and services.bitcoin client über tor"We think the ability to easily monetize data will give both individuals and corporations motivation for expanded innovation in connected devices," he said.declaring bitcoin incomeAndrew DeSantis, an engineer at 21, explained that the ability to send and receive bitcoin payments from machine to machine has the potential to unlock a new kind of "machine economy" in which machines routinely trade data and services for bitcoin.declaring bitcoin income

"By using bitcoin microtransactions to incentivize machine operators, we can now get very accurate real-time readings of network conditions from around the world."DeSantis explained that when the 21 Free Client is released, there could be nodes in thousands of locations, creating a complete planetary web of machines that are buying and selling information.All of this becomes possible without a human needing to initiate each action."It’s not just about people to machines, but also machine to machine, too," Pate said."Capturing data is nothing new.But being able to monetize little bits of it on a massively distributed scale is."21 sees the proof-of-concept as step one in a larger vision of creating a free market maintained by Bitcoin Computers.For example, DeSantis speculated that there is the potential for market-based dynamics to develop, whereby those in densely populated areas, nodes will have to compete to sell data."So in New York City, it has a lot of endpoints.There could be hundreds or thousands of people selling the weather or offering their pinging service to you.

In Nebraska, though, there might be far fewer endpoints, which means that those users could charge more," DeSantis explained.He compared variable pricing to the way surge pricing works with Uber.When there are a lot of cars on the road, but demand is relatively low, the price remains at the 1x multiplier.However, if it is rainy or rush hour, more people will begin demanding the service, thus increasing the multiplier.On top of supply and demand market dynamics, the pricing could continue to rise to incentivize those that otherwise don’t want to connect to the network.Pate explained that part of running one of these nodes was the ability to choose which APIs to connect to.Pate even went so far as to speak to the implications of allowing Internet users to reclaim ownership of their data."People will feel better about selling datasets they want to, instead of having it automatically collected.This gives the decision power back to the individual, instead of being opted in to give valuable data without consent."