Thread "ownership" is a new concept for me, apologies!

I built site that shows difficulty for any vanity personalized address as well as time estimate to generate one. And order one if you wish:

http://vanitycoin.com/

(This project is to sponsor open source development effort)

You don't need to wait for every single store to accept bitcoin.
Get Bitcoin debit card (there are few available) that works for you.

These cards auto-convert your bitcoin balance to dollars during purchase, so store does not even need to know anything about bitcoin.
I used shift card which uses very fair rate (middle between Coinbase bid/ask spread at the time of purchase) and no extra fees, besides cash withdrawals.

I used it to buy gas, Apple iPhone 6s, stuff from Amazon and even groceries:
http://www.mensk.com/shift-card-bitcoin-visa-debit-card-that-changes-the-game/

Wow, that's quite a performance on Windows. Congratulations!
Which card do you use?

Just generated the lucky address

188888888qZ5Mv4u5C2Bve6eyVJBFR5EEj

So being a new forum member makes it impossible to do quality work?

I tested code for 2 days before granting bounty and confirming it functions as desired.
Regarding code - keep an eye on the upcoming updates to the plugin - all new code will be there.

If any combination of words can be valid - then it makes it harder for brute force your wallet by scanning text files in your hard drive.

With Electrum 2.5.4 I noticed that generated words following certain pattern where order of words matters.

For example " ... word1 word2 word3" pattern is valid, but " ... word1 word3 word2" pattern is not considered as valid - Electrum won't allow to restore wallet like this.

I want to understand why is this so - because if words are sequenced according to certain predefined algorithm - than it is possible for attacker to scan web/computer for "valid" sequences of 12-13 words that might belong to Electrum wallets.

Ideally I want Electrum to allow any order of words to prevent such guessing.

Congratulations to nearion for delivering exceptional quality code and winning the bounty.

I will be updating BitcoinWay - Bitcoin Payments for WooCommerce wordpress plugin soon to support both Electrum 1.x and Electrum 2.x Master Public Keys.

This plugin (in conjunction with free WooCommerce plugin) allows anyone to build online stores to securely accept payments in bitcoins (as well as in any other currency).
Secure means - your online store is 100% secure from any kind of hacking attacks without relying on any middleman or any third party service provider.

Secure also means - if your online store will be hacked and cracked and infested with malware and all passwords will be compromised and stolen - you will not lose any bitcoins - thanks for Electrum master public key algorithm that allows to generate receive-only bitcoin addresses without need of knowing private keys.

Even before I implemented this new update - you may use Bitcoin Payments for WooCommerce wordpress plugin today with Electrum 1.x.

Thanks to bitcointalk forum and to nearion.

Bounty offered to implement this:
https://bitcointalk.org/index.php?topic=1318565.0

Gleb

I've build Electrum-based open source Wordpress plugin that allows anyone to build 100% secure, hacker proof, no middlemen involved online stores allowing to sell anything for bitcoins or dollars:
https://wordpress.org/plugins/bitcoin-payments-for-woocommerce/

It is based on Electrum Master Public Key (MPK).
The problem is that Electrum 2.x changed the MPK algorithm and PHP-based MPK-to-bitcoin-address code (that I hired someone to write) no longer works.

I need to adjust existing (or create new) PHP code to generate bitcoin addresses from both Electrum 1.x and Electrum 2.x Master Public Keys.

Download plugin sources from here: https://wordpress.org/plugins/bitcoin-payments-for-woocommerce/ .
The current code that does it for Electrum 1.x is located within the file: bwwc-mpkgen.php, function:
function BWWC__MATH_generate_bitcoin_address_from_mpk ($master_public_key, $key_index)
{ ... }
Feel free to use it as a reference.

I need to create function: BWWC__MATH_generate_bitcoin_address_from_mpk2 ($master_public_key_v2, $key_index)
that can generate bitcoin addresses using Electrum 2.x Master Public Key in a decently performing way (not slower than 1 address per second on an average machine).

Can pay in bitcoins or dollars.

Gleb

I've build Electrum-based open source Wordpress plugin that allows anyone to build 100% secure, hacker proof, no middlemen involved online stores allowing to sell anything for bitcoins or dollars:
https://wordpress.org/plugins/bitcoin-payments-for-woocommerce/

It is based on Electrum MPK.
The problem is that Electrum 2.x changed the MPK algorithm and PHP-based MPK-to-bitcoin-address code (that I hired someone to write) no longer works.

Does anyone knows how hard it would be to adjust (or re-create) PHP code to generate bitcoin addresses from Electrum 2.x MPK?

I hate to let plugin rot - as lots of people liked it's bulletproof MPK-based security and no middlemen concepts of it.

If anyone is wiling to help here, I surely would love to donate to assist an effort.

Gleb

You're correct, apologies for that. Ignore my post.

1King1NYebZHMJRAHpESWwjXYyisBWXSak  -- just generated by accident. Let me know if interested (donation welcome )

I just updated bitcoinway plugin to WooCommerce.
Download page is here:
http://www.bitcoinway.com/products/

Number of bugs are fixed.
Bitcoinway plugin for woocommerce allows anyone to launch online stores and sell physical and digital products charging customers in bitcoins as well as in any other worlds currency.

All purchases are automatically gets deposited into your own electrum wallet.

Main advantages:
- no middlemen or extra service involved.
- you are not paying any fees to anyone or losing percentages of your sales.
- 100% security: bitcoinway - based store are impossible to hack. There are no private keys needed or used anywhere. Even if hacker takes over your server, database and all files - he cannot steal any funds. Your bitcoins are absolutely safe and after each purchase are  immediately arrive to your own, private wallet.

Enjoy!

Gleb

I suggest creating new wallet after 500+ addresses got used.
Unused (addresses that never received any payment) will eventually get recycled back to the usable pool (for the next potential buyer).

See this:
http://wordpress.org/support/topic/plugin-generated-addresses-are-not-showing-in-electrum#post-4213960

Thats probably the best summary of the whole thread.
Regardless of volatility (which should normally raise the price of call options significantly) - it's always a totally free ride for a buyer.

I think the solution logic would be easy:

- IF buyer "marked payment as complete"
- AND dispute is opened by the seller
- AND buyer failed to present any proof of payment (image of receipt, snapshot of "paid" page, transaction id, whatever)
- AND buyer failed to respond on dispute within reasonable time, like 4 hours
- THEN - seller's escrow will be released and transaction cancelled.