Release notes for Bitcoin v0.1 Alpha
Bitcoin is 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.
You can find screenshots and the download link at:
http://www.bitcoin.org
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
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https://sourceforge.net/p/bitcoin/mailman/message/21312004/