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See https://bitcointalk.org/index.php?topic=72022: I am interested in inserting sha256sum data into the block chain. I see that the protocol you currently use has the following message types: '01' for md5 '02' for ascii May I suggest to add the following?: '03' for sha256sum I see you already have an option for md5sum, but from what I know, the MD5 algorithm has serious security flaws, so it shouldn't be used as secure hash algorithm. SHA256 is used by Bitcoin itself, so using anything that is better than SHA256 doesn't make sense, until Bitcoin itself switches to a better hash type. Since a SHA256 hash is still quite small (256 bits = 32 bytes = 17(?) payments using your scheme), I don't see a reason to use smaller hashes either. So IMO SHA256 is the "best" secure hashing function for Bitcoin messaging. If you send a patch, I will consider adding it. Still, the back-end has to be updated as well, and it requires additional work ... BTCmsg, at your service. |
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is everything required to do this ourselves included in "btcmsg-tools"?
perhaps you could post a tutorial of how one might encode their own messages into the block chain using your protocol.
I would be most grateful and would be willing to toss a few BTC your way.
Thanks!
Everything needed is available on http://btcmsg.staticloud.com/#FAQThe parts which are not online, are only the daemons that runs everything automatically. You may pm me if you would like details to do it yourself. BTCmsg, at your service (although still offline) |
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Notice:BTCmsg service will be unavailable few *days*, due to maintenance. All existing messages are available (and will be forever ...), but no new messages will be accepted for now. For the user that sent lately a message larger than 5 BTC - thank you for the message. Unfortunately the daemon was down when the message was sent, and when it was up again, the message got already auto-deleted (mailinator rules). Please contact me with the message you wrote, better using a private message on bitcointalk.org or to btc_msg@yahoo.com (which I check seldom). A notice when the service is alive again will be given. BTCmsg, at your service
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btcmsg, are you converting message to numbers? sees address are irrelevent, and you hold these bunch of keys.  I am not sure I fully understood you. I do convert the messages to numbers using a simple protocol, so it would be possible to decipher them. The addresses are not important, but their order is. In order to preform this procedure, I do have to hold many keys. BTCmsg, at your service |
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It seems that another message had a problem:
The user that sent a message on 2012-01-17 - please contact me.
Your email part has never arrived.
BTCmsg,
at your service
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Just to remind you that the service is running 24/7 as it is fully automatic.
Support will continue to be here.
BTCmsg,
at your service
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Hello to the user that sent 0.09667787 BTC to the address 1CnB6deXqy8qmAPfdVxAV7xzycnPGGJbgG
Your email message got lost, so please send it again, or send the message to my private email (appears in the client), or PM me.
If you don't respond within 72 hours, a refund will be issued.
BTCmsg,
at your service
Since no response was seen, a full refund (0.09667787 BTC) was issued: http://blockexplorer.com/address/1MDahLJFmbyDgjyetq6sENZJHkVS2r1vSiDear user: You may try again, just take care to send the email message with no mistakes (especially correct "To" field). BTCmsg, at you service. |
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Hello to the user that sent 0.09667787 BTC to the address 1CnB6deXqy8qmAPfdVxAV7xzycnPGGJbgG
Your email message got lost, so please send it again, or send the message to my private email (appears in the client), or PM me.
If you don't respond within 72 hours, a refund will be issued.
BTCmsg,
at your service
I think the message is sent? ~ Matt & Angela in love always and forever ~ 8/1/2009 No, this is a different message. I am still waiting for the 0.09667787 BTC message. |
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Hello to the user that sent 0.09667787 BTC to the address 1CnB6deXqy8qmAPfdVxAV7xzycnPGGJbgG
Your email message got lost, so please send it again, or send the message to my private email (appears in the client), or PM me.
If you don't respond within 72 hours, a refund will be issued.
BTCmsg,
at your service
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Asked before but unanswered as far as I can tell.
What pool is this done through?
The message is written using a normal transaction. The one who generates the next block and accepts that transaction is the one to place it in the block chain (and the one that gets the fee). No specific pool is involved, but obviously pools are those who generate most of the blocks nowadays, so with a high probability it is a pool that does the job. BTCmsg, At you service. |
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Why can I not use a web-based mail program of my choice? why not just create a mailto-link that can be copied into any mail-software? it's a pity I cannot use the service ...  I will add an additional mailto link on the next version... Until then, you can click the button (which is anyhow implemented as a mailto link), and copy the to/subject/body from the message that opens in your local mail client, and paste it into your webmail. Take care: Mistakes in the copy/paste may damage the message. |
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The bitcoin currency currently offers no major advantage over USD. Everything you can do with BTC, you could also do (well almost) with USD. Creating services which are available only using BTC may give this extra push to the bitcoin currency so it doesn't lose its value totally as seen in the last days rate. Bitcoin Message Service which was announced https://bitcointalk.org/index.php?topic=47283.0 earlier this month and mentioned https://bitcointalk.org/index.php?topic=48989.0 among The Bitcoin killer app list, aims to this direction, giving an option to write messages into the block-chain which means order of 10^6 scattered copies around the globe safely kept by individuals, impossible to delete messages and possibly anonymous. Such a service would not have been possible before the bitcoin times, and it requires the use of BTC. Using such a service directly contributes new users to the bitcoin community. Are there more such services? Do you know any plans plans for such services? |
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I just found 90% of my BTCs are sent to 1BTCmsgZo1ef9nkx1eQMy5DsiaNfRQMVuR
Nice job , but can you make it cheaper ?
Transaction of very small amount require higher transaction fee by the bitcoin network (this is embedded within the bitcoin client code). I have set the price to avoid the "too low transaction" punishment, to cover the current transaction fees and to leave a small margin that supposed to cover the running costs of the service. Currently I am very far from covering the costs, but if there is a reasonable demand I could reduce the fee. This would require an update to btcmsg html/css/javascript client and setting the new values in the server side (few seconds work ...), but considering the deep dive of the BTC/USD rate took, I don't see the price so high now. What will happen to messages once a newer client version is published? The old messages will be always visible by the old clients as well as new clients. New ascii messages will be always visible by old clients as well as new clients. Non ascii messages as well as any other new feature may be only available using a newer client. |
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I've send the email and
pay exactly 0.16969016 BTC to 1QCfYmFzWCDkQpGBDLvQQTLxk2gKRy3Uyq
Where will this done?
Sorry for answering late. I was offline. The system has received your payment at Block 149878 (2011-10-19 11:34:30) After 3 confirmations, the processing was done, and the message appeared in Block 149882 (2011-10-19 12:12:00) In total, there were 4 blocks in between the request and the process (37.5 minutes). The message is available in the transaction: http://blockexplorer.com/rawtx/b35c9a4554b87ed6138ceadc9d830e1056552fbb458c55447e8fcbd0ed83a3d0and in order to see it, just copy all its content, and paste in http://btcmsg.staticloud.com/#BrowseYou could also search in blockexplorer the address that you have sent the payment to, and see the the first "sent" transaction is your message. BTCmsg, at your service. |
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Again, this is really nice.
A really worthy way to destroy (spend) bitcoins.
Thank you finway! It you have something important to tell humanity, that's the place. Be the second user :-) BTCmsg, at your service. |
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Where else do you get a backup of your data in 100,000 locations uniformly distributed all over the planet
Posting to Usenet gives you just as much redundancy. The p2p architecture of bitcoin uses the redundancy very well for availability. It is enough that only few among the thousands of copies are online to make the system fully available 24/7. If the usenet servers fall and I want my message - I have to ask around who has a copy. Who made a backup of my usenet post. That's less likely to work. The bitcoin user MUST have a copy of the blockchain just to make transactions. No one makes you keep offline usenet archive backups ... Once you have read the usenet post, you don't keep it, but the blockchain you do keep. Any bitcoin block chain copies are present also on each smartphone with a wallet ... and that's where personal computation is heading. There will be no copies of the usenet posts on your phone, I assume. Government order to delete a message from the usenet would probably work, but deleting the message from the blockchain wouldn't. And the cherry is the cryptographically signed timestamp, that you don't have in the usenet. It would be very handy to prove prior art in court for example. But we can all choose where to put our data. BTCmsg, at your service. |
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