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Showing 6 of 6 results by ktofu
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Topic
Board Collectibles
Re: [WTS] Casascius 0.5 physical BTC with series 2 label
by
ktofu
on 29/01/2015, 07:29:45 UTC
No interest.. Sad

How about 15 BTC?
Post
Topic
Board Collectibles
Re: [WTS] Casascius 0.5 physical BTC with series 2 label
by
ktofu
on 21/01/2015, 18:52:32 UTC
you're gonna get nowhere without escrow and a timestamped pic.
Thanks.

Escrow is required, here is a timestamped pic:

http://i.imgur.com/DJr9Gjq.jpg
Post
Topic
Board Collectibles
Topic OP
[WTS] Casascius 0.5 physical BTC with series 2 label, 15 BTC
by
ktofu
on 21/01/2015, 17:29:52 UTC
With only 45 in circulation, this is the least produced of all the sub-500 BTC Casascius coins.

Looking to sell for 15 BTC, negotiable. The item is untouched in it's original case.

Edit: escrow is required, timestamped pic in the posts below.

Edit: lowered price
Post
Topic
Board Project Development
Re: [ANN] hecs.py: Encrypt text with bitcoin addresses
by
ktofu
on 12/05/2014, 06:21:43 UTC
Using the pycoin library for ecdsa and address stuff.
Post
Topic
Board Project Development
Topic OP
[ANN] hecs.py: Encrypt text with bitcoin addresses
by
ktofu
on 10/05/2014, 18:32:36 UTC
Hi all,

I made a GUI for encrypting messages with bitcoin addresses.

 - Source at https://github.com/eudemonia-research/hec
 - Screenshots at http://imgur.com/a/iOpyP
 - Uses the blockchain.info API to get the public key. Note that they don't have keys from early transactions for some reason
 - the session key is encrypted with the public key using the EC group operation
 - the message is encrypted with aes in counter mode
 - sha256 for the hmac
 - tested with python3 only

Plans:

 - custom encryption options
 - cxfreeze an exe, so my friends who don't wanna learn to use linux can play along

Installation:

It's on pypi. It depends on PyQt5, pycoin, and pycrypto. For some reason I had to install pycoin manually (no idea why).
Install with:
Code:
pip install hec
run with
Code:
hecs.py

Screenshot:

http://i.imgur.com/QpGuODl.png

feedback and suggestions welcome

- ktofu
Post
Topic
Board Beginners & Help
Topic OP
Hugo Barra details the scale of the Chinese market
by
ktofu
on 14/01/2014, 05:19:16 UTC
http://www.youtube.com/watch?v=mZsvJUa9FpI

Time to start learning Mandarin Wink