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1  Bitcoin / Development & Technical Discussion / Are transactions compressed? on: January 06, 2018, 12:33:08 PM
I've been playing around some with raw transactions; one of them had a size of 4401 bytes when signed. So for a test, I compressed it with bzip2, and the resulting (hex) was only 1680 bytes
cat signed.txt | bzip2 | openssl enc -base64 -A -out signedbz2.txt

That's almost a third of space that's saved, so the fee would go down noticeable too, and more transactions would fit into a block.

I know keys can be compressed, but what about a transaction itself?
2  Alternate cryptocurrencies / Altcoin Discussion / Byteball questions on: May 22, 2017, 01:08:08 PM
I've read quite a bit about Byteball, but some things I cannot answer:

For the next distribution you need to link your Bitcoin address against your Byteball address, eg by signing a message.
I always keep my wallets on an airgapped system to be safe. I can generate new Byteball addresses, and I can sign messages with Bitcoin.
But how can I access the transition bot eg via browser? The link starts with "byteball:" and Firefox does not know how to handle that.

Is it impossible to export the private keys for your addresses? I always keep them on paper for backup and would like to do the same with Byteball.

When I use different addresses, can others somehow tell those are mine? As in, does the wallet have eg an ID that's in every transaction?

Anybody knows of something like vanitygen to create custom Byteball addresses?


3  Economy / Goods / [WTS] 20 Geschenkkarte on: June 28, 2016, 05:32:59 PM
I have a gift card code for sale. On the back it says:
"Dieser Rabatt gilt einmalig pro Neukunde ab einem Mindestbestellwert von 150 Euro und ist nicht mit weiteren Aktionen kombinierbar"

I'm offering it for half the value (10) in BTC.

4  Economy / Services / Autoplayer on: May 22, 2014, 07:56:14 AM
I have written an automatic martingale player. It just needs to be copy & pasted into the webconsole of Firefox and keeps on playing until it either reaches a certain amount of rounds, or a stake limit (with audio alert).

If anybody is interested, pm me an offer and I'll clean up the code (it's not obfuscated so you can easily work on it).

It's for scientific/educational purposes and losses may occur. Sold as is.

I posted the script later in this thread. If you like it, please tip me Smiley
5  Other / Beginners & Help / MtGox verification question on: November 16, 2013, 09:01:07 PM
If you newer withdraw or deposit anything but BTC at MtGox, will you still have to go through the verification?

I'm just looking for a place where I can exchange a few coins back and forth to US dollars or some other fiat to try my luck at profiting from fluctuations.

Is there any official statement on this?
6  Economy / Goods / Offering 75 for 1BTC (80% discount) on: February 28, 2012, 08:28:21 PM
I'm offering an AdWords code worth 75 for only 1BTC, meaning you'll get 75 for a Bitcoin.

Reason I cannot use it is that it's only valid for AdWords accounts not older than 14 days.

Feel free to PM me

Edit: Lowered the price from 5 to 1 BTC
7  Economy / Trading Discussion / Warning about user "bitbetter" on: January 31, 2012, 07:14:48 PM
Last year when he started his website, I registered as an affiliate. For each visitor to his site he promised to pay 0.002 Bitcoins. According to his own affiliate statistics, 3673 hits were counted for my ref-id, 2350 of them unique visitors.

Additionally, I earned 7030 "bitbetter points" on his website which were promised to be exchanged with a ratio of 1000:1 into Bitcoins.

All this happened last year. I sent him several PM's on this board and emails to his address (which he used to reply to before), asking for my payment of 11.73 Bitcoins. He decided not to reply and went into inactive mode. A few days ago I noticed he is active again and once more reminded him, offering to solve this without making it public.

He has been on here since I sent the PM and so far, there has been no reply, no email and of course no payment.

So if you consider doing business with him, be careful.
8  Economy / Goods / [SELLING] Skype Vouchers on: September 13, 2011, 01:17:04 PM
Stay connected with friends and family with these vouchers from Skype for 60 minutes worth of free calls to landlines and mobiles worldwide. Valid for new and existing accounts.

0.2btc for a single one
0.5btc for three

PM me.
9  Economy / Goods / [SOLD] 75 EUR Google Adsense Voucher (105 USD) on: August 27, 2011, 03:32:36 PM
I'm offering a voucher from Google which can be used to get Adsense advertising worth 75 EUR.
Can only be used with Adsense accounts not older than 14 days.

Price reduced. If you want to promote your Bitcoin website, this is your chance.

Just PM me
10  Bitcoin / Bitcoin Discussion / Bypassing the blockchain on: August 24, 2011, 05:31:01 PM
Like the topic says. How can I make a transaction which will not appear in the blockchain?

I'm not caring about the security of the P2P validation, because I want to send my Bitcoins to another one of my addresses; even in the same wallet.

The reason for this is simple: I don't want others to know who sent me my coins.

Everybody suggests to use a new address for each transaction to make it a bit more anonymous. Now let's assume I got 100 incoming transactions from different people, 0.01Btc each. When I now send 1Btc to another user, all those 100 addresses are linked together in the blockchain, effectively telling everybody that all of those belong to the same user. And if one of those addresses is linked with an account name or email, everybody knows that user is me.

I already asked here: but the Newbie forum doesn't get much attention it seems.
11  Other / Beginners & Help / Questions about sending address and transaction fees on: August 21, 2011, 04:36:36 PM
1. How can I select the address I want to use for sending coins? In the sending dialog, I can only enter the recipient and amount. Is the sender address randomly picked from my address list? If, then that means the recipient can look up my past transactions for that address in the blockexplorer. So the more often I send, the easier it gets for others to build a map of all my addresses?

2. From what I read, if I received a lot of small transactions and make a big transaction, then those small amounts are bundled. Does that mean that my outgoing transaction contains a whole bunch of my addresses which also can be looked up in the blockexplorer?

3. Is the transaction fee voluntary? When I look into the options of my client then there's a 0.00 fee; but I read that 0.0005 is the minimum fee. I mean, why should I pay such a high fee like in the wiki? (See To send 8.60, I need to pay 1.07?

4. In an older client, one could also send to an IP address. Does that mean that coins are transferred without appearing in the blockchain? Because if 1. and 2. are correct, I'll make a second "spending" wallet in my LAN and send coins to its IP from my "receiving" wallet. That way all my small transactions get converted into a single transaction which never appears in the blockexplorer.

(if this should go to another section, feel free to move it)
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