-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello Bitcoin community!

Now you can write your message into the bitcoin block chain.
It will stay there forever with a proved timestamp.
Reading such bitcoin messages can be done online or offline.

Just visit http://btcmsg.staticloud.com or http://btcmsg.ifreeweb.net
Alternatively download the site for offline use from http://btcmsg.staticloud.com/offline.tgz or btcmsg.ifreeweb.net/offline.tgz or http://btcmsg.4shared.com

The procedure is:
1. Write your message.
2. Click the "send email" button that creates a request. Send this request.
3. Pay the _exact_ amount of BTC to the given account.

Your message will be part of the block-chain within few blocks, which means instantly thousands of copies all around the globe forever.

* No registration required.
* Totally anonymous if wanted.
* Open protocol and basic python tools are included.
* Offline option.
* Client is signed to verify authenticity.

Basic technical details:
The clients are html+css+javascript only, and they are enough to read the messages forever (you can save the client locally for offline use).
The service for writing new messages requires the availability of an appropriate server, but the already processed messages are accessible forever, and some are already present on your copy of the block chain.
In order to write a new message, the clients create an email request which the server then processes.
The server is a special customised bitcoin setup behind tor.

More information?
* FAQ inside the client
* Twitter: https://twitter.com/btcmsg
* Blog: https://btcmsg.wordpress.com
* Later on in bitcointalk.

Be one of the first to place a message within the block-chain and touch the eternity now!
Be responsible for your messages and think twice before you write them, so you don't regret later.
They cannot be deleted! Recall that your grandchildren will be able to see these messages ...

The service is still in Beta, please check twitter for downtime announcements.
Further testing is still needed:
Requests sent by mail.yahoo.com and send-mail.org were tested. If you use other webmail services or local clients, support will be added on the fly. It may mean a short delay in the timestamp.
If a problem does occur, you will get your bitcoins back (well, except for the usual bitcoin transaction fee).
For the first few messages I will communicate with you private issues per email. It would be better if you send your transaction id in the subject. Also, keep your message aside for reference just in case.

Note:
This project is also an experiment with anonymity. I am trying to be an active entity behind a public service which gets even paid, without exposing my identity. If you do manage to know who I am or even get interesting details about me, please contact me directly per email using my pgp key. The details are in the client.


BTCmsg,
at your service.
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Thank you GamingG for your comment!

I understand your concerns and I hope you find my answers below satisfying.

As an owner of bitcoins, I hope that the bitcoin system keeps running and that the value of bitcoins does not keep decreasing constantly as it did in the last months. With the introduction of the bitcoin message service I am trying to open the bitcoin to a wider circle by giving bitcoins an added value, a service which was not possible before: a simple way for any average person to write something that will stay there forever (possibly anonymously) and at the same time to be able to prove the timestamp of that message. I use the special infrastructure of bitcoin which is the "p2p + money value" that makes it something that many like to keep.

The idea is to have this service living in symbiosis with bitcoin. Supply new users to bitcoin as I offer something new which can be of interest to people who did not consider using bitcoin before. Any such new service pushes bitcoin further into being a real currency that one can do something with rather than only speculate in the exchange game. In return I get the credibility that bitcoin has already gained, and mainly it large user base.

The service indeed increases the size of the blockchain, but it is not much different from other transactions which occur as part of bitcoin being a currency. Browsing the blockchain shows very similar transactions all around. If bitcoin ever becomes more popular, a major increase in the blockchain is imminent and the system has to cope with it.

As for the solution of starting a new blockchain: the merged mining may solve the difficulty/security problem, but still an important factor for a service like bitcoin message is the popularity - the amount of copies of the message out there in the world. This is required to assure that this message will be there forever (or at least until bitcoin currency totally dies). If the new generated blockchain is held be only few, it could be easily erased and ignored.

It is important to note that also the miners gain from this service as the transaction fees which are paid are high (e.g. 0.006 BTC which is 12 times the common 0.0005 BTC fee), and at a certain point the transaction fees would be the main drive to keep the bitcoin system running.

Obviously I need the support of the bitcoin community that will start using the service. This is a required step before the service becomes popular also outside the current community.

BTCmsg,
at your service.

Not really.  Pools only promise their miners bitcoins in return for shares; if there are even a handful of pools that don't mine your blockchain, you're essentially crossing your fingers and hoping the operators of those pools don't abuse the "free hashpower on your chain" they get as a consequence of the fact that their miners don't expect HappyPantsCoins.

Pool operators are kept in check by the fact that their members expect to get paid BTC for shares; if the operator uses the hashpower for anything other than "playing nice" it's likely to cut into the poolmembers' profits, they will get upset, and they will leave.  If you're an altchain using merged mining this mechanism is not working for you -- you've been warned!

Bitcoin is as secure as all the miners, each voting in proportion to his/her hashpower.  Altchains using merged mining are only as secure as the BTC-mining pool operators are trustworthy.

Many thanks for the first user!

The system did not get your message request per email so it cannot be automatically processed.
Please help me debug the issue.

Your payment transaction has arrived safely:
http://blockexplorer.com/tx/7ff690ed9bb02045cbe0700fb977302cb0bd3b01eb792541a8a1af2cd790c7c5
Please try to write again the message and send the email with the "Send email" button (no need to send again the BTC payment). You may use send-email.org service instead for better anonymity.

Once the message arrives, the automatic process will take place.

If the message is not processed within few hours after your sending (this you can see in the above tx, as the "Not yet redeemed" changes to the next tx link),  please contact me per email (available in the client), and write there the exact message (every space is important).

I will continue the discussion with you in private.

If you don't respond within 72 hours, I will issue a refund for you.

BTCmsg,
at your service.

Another message is already present on your disk inside the block chain:
Why not checking it now?

You can read it offline using (slightly modified) bitcoin-tools (patch included):

Or using the web client:
1. Copy everything from http://blockexplorer.com/rawtx/72e78a410caf245e18ec9ee04d2e478c1e68f5eb8503d34ff69589a07aaa3cd1
2. Paste it in http://btcmsg.staticloud.com/#Browse

And you will see the message!

Write your message as well :-)

BTCmsg,
at your service.

Merged mining isn't what you think it is.

Since the user has not yet resend the email message and not contacted me directly either, I have issued a refund:
http://blockexplorer.com/tx/c7c253e5fdfe267b5604d0ae09ab7224967e67653e9881d1afe3444548465b01

Actually, according to the payment I could see that the message had no more than 9 letters. I have scanned the whole space of possible ascii messages of maximal 9 letters, and found none that could have arrived to the specific bitcoin address with this amount. It means that except for the lost email problem, the sender also had a mistake with the bitcoin payment - he has sent either a wrong amount or used a wrong address to send to.

First user - you may try again now :-)
Maybe somebody else would like to be the first user to write a message which can't be deleted?

BTCmsg,
at your service.

Damn, $1 for THAT? lol

What's this all about? Digital era tatoos? Just remember kids, no love declarations with names: You might regret it later, just like with real tatoos

Nice job!

Again, this is really nice.
A really worthy way to destroy (spend) bitcoins.