Let us not forget our roots, Bitcion v0.1.0. Pure code as close to Satoshi as you can get. We have this pinned to our organization to remind everyone where we came from, so that we can better see where we are going.
Announcing the first release of Bitcoin, a new electronic cash system that uses a peer-to-peer network to prevent double-spending. It's completely decentralized with no server or central authority.
See bitcoin.org for screenshots.
Download link: http://downloads.sourceforge.net/bitcoin/bitcoin-0.1.0.rar
Windows only for now. Open source C++ code is included.
- Unpack the files into a directory
- Run BITCOIN.EXE
- It automatically connects to other nodes
If you can keep a node running that accepts incoming connections, you'll really be helping the network a lot. Port 8333 on your firewall needs to be open to receive incoming connections.
The software is still alpha and experimental. There's no guarantee the system's state won't have to be restarted at some point if it becomes necessary, although I've done everything I can to build in extensibility and versioning.
You can get coins by getting someone to send you some, or turn on Options->Generate Coins to run a node and generate blocks. I made the proof-of-work difficulty ridiculously easy to start with, so for a little while in the beginning a typical PC will be able to generate coins in just a few hours. It'll get a lot harder when competition makes the automatic adjustment drive up the difficulty. Generated coins must wait 120 blocks to mature before they can be spent.
There are two ways to send money. If the recipient is online, you can enter their IP address and it will connect, get a new public key and send the transaction with comments. If the recipient is not online, it is possible to send to their Bitcoin address, which is a hash of their public key that they give you. They'll receive the transaction the next time they connect and get the block it's in. This method has the disadvantage that no comment information is sent, and a bit of privacy may be lost if the address is used multiple times, but it is a useful alternative if both users can't be online at the same time or the recipient can't receive incoming connections.
Total circulation will be 21,000,000 coins. It'll be distributed to network nodes when they make blocks, with the amount cut in half every 4 years.
first 4 years: 10,500,000 coins next 4 years: 5,250,000 coins next 4 years: 2,625,000 coins next 4 years: 1,312,500 coins etc...
When that runs out, the system can support transaction fees if needed. It's based on open market competition, and there will probably always be nodes willing to process transactions for free.
Satoshi Nakamoto
Bitcoin is an electronic cash system that uses a peer-to-peer network to prevent double-spending. It's completely decentralized with no server or central authority.
Windows NT/2000/XP (and probably Vista)
Vista hasn't been tested yet. All the libraries used are cross-platform, so there's nothing preventing future Linux and Mac builds.
Unpack the files into a directory and run bitcoin.exe.
The software automatically finds other nodes to connect to. You should set your firewall to forward port 8333 to your computer so you can receive incoming connections, otherwise the nodes you can connect with will be limited.
To support the network by running a node, select:
Options->Generate Coins
and keep the program open or minimized. It runs at idle priority when no other programs are using the CPU. Your computer will be solving a very difficult computational problem that is used to lock in blocks of transactions. The time to generate a block varies each time, but may take days or months, depending on the speed of your computer and the competition on the network. It's not a computation that has to start over from the beginning if you stop and restart it. A solution might be found at any given moment it's running. As a reward for supporting the network, you receive coins when you successfully generate a block.