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61  Bitcoin / Bitcoin Discussion / Re: Assumptions required for Bitcoin existence on: February 26, 2015, 10:49:51 PM
I have to agree with franky1, c'mon, not sure who your trying to fool, if you have made about 200+ posts here you probably can answer these questions just by having read them at some-point when it was asked by others or you through personal research find the answers.

You have been involved with this forum for nearly 4 years and have not found the answer to your extraordinarily vague questions. Based on your question and post count, people will assume you have purchased this legendary user account.

Ok, so I'm a noob who purchased this account. Now, what is the answer?

Franky1 largely answered this but I can take a crack real quick:

What is the minimal set of assumptions that must be correct for Bitcoin to function properly?
- Electricity, Internet, Two computers which are networked together running compatible Bitcoin Clients.

For example, we assume that it's possible to distinguish work done during mining of bitcoins VS work done during mining of other coins. If we wasn't able to identify blockchain belonging to Bitcoin then any coin with higher cumulative difficulty would "overwrite" work/electricity burned for Bitcoin.

- Since every single block in the chain includes a hash of the entire previous blocks data, this would be fine with your assumptions, for the user to "overwrite" they will actually have to be using the exact same blockchain as everyone else to with the exact same data previously hashed as everyone else in the world. Otherwise they will be adding blocks to their alternative blockchain that no network participants will recognize as the real chain because the alternative chain would never be able to grow longer than the real blockchain read section 11: https://bitcoin.org/bitcoin.pdf

The attackers chain would always be behind, unless they held a significant portion of the network like pointed out by others previously.

62  Bitcoin / Development & Technical Discussion / Re: Where can I learn more about OP_RETURN? on: February 26, 2015, 10:34:35 PM
...

I am interested in learning more about the rapidly growing subject of posting data on the blockchain via the OP_RETURN function, but I have been unable to find much information (even less that non-programmer OROBTC can understand).

I also understand that using OP_RETURN is controversial due to concerns about "blockchain bloat", and that the blockchain is mainly used for posting financial transactions.

Thank you and much obliged for any info (links) for us beginners!   Smiley

You can start by looking at the Bitcoin.it wiki Script section: https://en.bitcoin.it/wiki/Script - Their is some information I saw here regarding OP_RETURN

This question probably would get better attention if you had asked it in the Development & Technical Discussion board.

Here is a stackexchange question about op_returns:
http://bitcoin.stackexchange.com/questions/29554/explanation-of-what-an-op-return-transaction-looks-like?answertab=votes#tab-top

https://blog.bitcoinfoundation.org/core-development-update-5/

63  Bitcoin / Bitcoin Discussion / Re: Assumptions required for Bitcoin existence on: February 26, 2015, 10:26:19 PM
I find it hard to believe that someone with a legendary status would not know the answer to this question...

Legendary status means nothing, it's just a dick length indicator on this forum.

I have to agree with franky1, c'mon, not sure who your trying to fool, if you have made about 200+ posts here you probably can answer these questions just by having read them at some-point when it was asked by others or you through personal research find the answers.

You have been involved with this forum for nearly 4 years and have not found the answer to your extraordinarily vague questions. Based on your question and post count, people will assume you have purchased this legendary user account.
64  Bitcoin / Bitcoin Discussion / Re: Moscow-Based Security Firm Reveals What May Be The Biggest NSA "Backdoor Exploit on: February 21, 2015, 01:46:29 AM

My bus driver just told me about this an hour ago, he was telling me to check out the Intercept article on it. What the fuck was I doing all day today?Huh
65  Bitcoin / Bitcoin Discussion / Re: Bitcoin Foundation Election Results are in: 4 Candidates in Runoff on: February 20, 2015, 04:58:35 PM
Btw the four candidates are

Bruce Fenton (me)
Olivier Janseens
Michael Perklin
Jim Harper

Congrats man! I am glad to see my both my choices made it to the run off, Good luck Bruce!
66  Bitcoin / Project Development / Re: How to accept bitcoin on a website ? on: February 20, 2015, 04:50:57 PM
Is there any way to accept bitcoin on a website automatically without using a 3rd party like bitpay? 

Yes, it is fairly easy if you are comfortable with PHP.

Using blockchain.info's API:
https://blockchain.info/api/api_receive

This creates a new address for each invoice and forwards the payment to an address you specify. Everything else is just creating a listener for the payment (using blockchain/info's notifier)/updating your database, etc.

To create "fresh" addresses otherwise, you'll probably want to use a Python script that has a wallet's MPK and then keep the rest stored offline. I have an academic example done in PHP where you query a database of pre-generated addresses (not recommended):
https://github.com/jswebdevel/btcbox


Dude, you beat me to the punch LOL
67  Bitcoin / Project Development / Re: How to accept bitcoin on a website ? on: February 20, 2015, 04:49:58 PM
Is there any way to accept bitcoin on a website automatically without using a 3rd party like bitpay? 

I would avoid using Bitpay and Coinbase for payment verification, you need to be a real company, have tax codes and ids etc. Learn about callback handling https://blockchain.info/api/api_receive

I setup payment handling and qr generation on a new Django website I was working on using blockchain.info receive api, it was so easy I was laughing the entire time I set it up.

Alternatively you setup your own node, and send RPC Calls to it too generate new addresses and then check for payments: getreceivedbyaddress <bitcoinaddress> [minconf=1]

https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_calls_list
68  Bitcoin / Bitcoin Discussion / Re: And so it continues... on: February 20, 2015, 04:43:41 PM
http://siliconangle.com/blog/2015/02/17/bitcoin-exchange-cavirtex-shutting-down-after-being-hacked/

Lot's of bad actors cashing out using the "We got hacked" excuse.  

Funny thing is a single person could easily program a decent exchange in 2 weeks, I would never send my coins to those exchanges. The services they provide are so ubiquitous and easy to setup that's why we have dozens of sketchy exchanges.

Edit: Spelling, no coffee yet
69  Other / Off-topic / Re: The no ad-sigs posters allowed topic - come and not be annoyed by rubbish posts on: February 19, 2015, 08:28:08 PM
And this might be end up being the reason why people end up moving from this forum to find a better place to post (I know I am getting tired of having to monitor my topics like a hawk and constantly just unwatch topics due to the drift towards pointless postings).


I have to agree with your intent on creating this thread, when I first started reading this forum I just assumed people were trying to market new websites and technologies they were creating by having a website in their signature. After sometime on the forum you start to learn that the majority of the signatures linked to Ponzi/Gambling/pay per post and were not really users trying to "share" their technology.

For along while I had a Bitcoin news and price aggregation website I made one weekend in my signature. I decided to remove this link to my website after reading a similar thread you made on the Meta forum. Not because my website was a Ponzi or pay per post scheme, but because I wouldn't want anyone to think that's what was created as in the end. I actually noticed a few days ago I posted a thread about some new technology, a few people chimed in and essentially left no content/discussion. Perhaps they legitimately did-int understand the concept and wanted me to elaborate but their posts just seemed contrived.

I think theymos, and the other admins should strongly consider doing what was done with avatars. Save signatures as legacy for existing users and Add the option to remove signature. Remove the ability for anyone to add/edit signatures, and one day this issue will lessen/go away.

70  Bitcoin / Bitcoin Discussion / Re: Is it just me... or are new Bitcoin version releases exciting? on: February 17, 2015, 10:15:29 PM
Many software updates are not a big deal, like a new version of FireFox or your antivirus scanner. And in the case of things like Flash and Java updates, they are actually a pain in the royal ass and I hate them.

But If you're like me, there's just a few software updates that I find I look forward to: significant iPhone iOS update, Windows major new versions, and Bitcoin version updates. The iOS and Windows ones are much less these days and I'm starting not to care so much about those.

But of all those three, I noticed I get the most excited about Bitcoin updates because it brings promise of new and enhanced features and performance. And this enhances the future potential of Bitcoin for the planet.

Even though version 0.10 just got officially released and out of beta, I find I am eagerly awaiting the next major version to see what cool and exciting features it brings.

Does anyone share this?



Well if you enjoy the excitement of what actually makes it into each build, I am sure you would like to be on the development mailing list:

http://sourceforge.net/p/bitcoin/mailman/

The discussions about BIP's (https://en.bitcoin.it/wiki/Bitcoin_Improvement_Proposals) can get very heated, nonetheless its great to hear about the ideas of what people expect Bitcoin will do/should do in the future.
71  Bitcoin / Bitcoin Discussion / Re: Blockstore: A Key-Value Store on Bitcoin on: February 17, 2015, 07:29:01 PM
Is there any live demo available for this project ?

Not that I know of, it actually looks really easy to use based on the documentation posted. When I get some free time I will set it up mess around and post my findings/instructions.

Edit: Spending my lunch looking at this, so far you need a chain.com api key (temporarily) eventually they said you will be allowed the option to let your own bitcoind node verify what they have the chain api doing. You need to connect to a bitcoind node, and it looks like this code only runs currently on Linux in my testing (Haven't tried OSX probably works fine). Right now I am setting up a new Debian VM with the latest bitcoind and the blockstore stuff to see if I can make a record.
72  Bitcoin / Bitcoin Discussion / Blockstore: A Key-Value Store on Bitcoin on: February 17, 2015, 05:57:53 PM
This seems like a really cool project wanted to share it with the forums. What do you guys think of it?

Repository:
https://github.com/openname/blockstore

Description:
Quote
Blockstore is a generic key-value store on Bitcoin. You can use it register globally unique names, associate data with those names, and transfer them between Bitcoin addresses.

Then, you or anyone can perform lookups on those names and securely obtain the data associated with them.

Blockstore uses the Bitcoin blockchain for storing name operations and data hashes, and the Kademlia distributed hash table for storing the full data files.

Design:
https://github.com/openname/blockstore/blob/master/doc/design.md

Usage:
https://github.com/openname/blockstore/blob/master/doc/usage.md

I did-int even mention the best part of it, the library is written in a good language (Python) and not something wonky/unreadable like Javascript. Wink
73  Bitcoin / Bitcoin Discussion / Re: Whats the longest you have waited for one confirmation?? on: February 13, 2015, 09:22:20 PM
Currently I have waited 3 hour Undecided

Probably 1-3 Hours like yourself

I found this searching around google, some people claim Satoshi waited 130 Hours after mining Genesis to the first Block, however this I beleive is untrue, its more likely he was fixing issues with the code during this time and it did not actually take him 130 hours.

-----

Here's a complete list of the differences between blocks, sorted by difference: http://paste.ubuntu.com/6780012/
And here's a BASH script used to get a list of blocks and a difference between their timestamps (requires jq):
Code:
#!/bin/bash

COUNT=$(bitcoind getblockcount)
PREVTIME=0

for (( i=0; i<=$COUNT; i++ ))
do
    HASH=$(bitcoind getblockhash $i)
    TIME=$(bitcoind getblock $HASH|jq ".time")

    if (( "$i" > 0 )); then
        echo "$(expr $i - 1)-$i     $(expr $TIME - $PREVTIME)"

        #progress display
        if (( $(($i % $(($COUNT / 100)))) == 0)); then
            echo "$i*100/$COUNT"|bc|tr '\n' '%' 1>&2
            echo "" 1>&2
        fi
    fi

    PREVTIME=$TIME
done

Run it like this: bash blocktime.sh|sort -n -k2. Takes a while to run (circa three hours on my system).

74  Economy / Service Discussion / Re: Coinbase, is it safe to use? on: February 07, 2015, 07:08:46 PM
If you aren't the sole controller of your private keys, you don't have any bitcoins.

Holliday is correct, coinbase can go belly up at any point. Their aren't any assurances that your bitcoin are safe in a third parties hand. Generate your private keys on an offline machine you destroy, back up the keys, and you just generated some peace of mind.
75  Bitcoin / Bitcoin Discussion / Re: Permanently keeping the 1MB (anti-spam) restriction is a great idea ... on: February 05, 2015, 02:13:11 AM
-snip- 

This makes me a bit scared, I had always figured in the future we would be allowed to use the blockchain and create transactions as we take for granted today. If we don't raise the block size, the competitiveness for transactions would be insane, I had always figured this but never had I imagined a scenario that we would never be able to move any coins.
76  Economy / Trading Discussion / Re: How exchange your bitcoin anonymity for USD cash? on: February 03, 2015, 05:21:15 AM
Hey I feel like coinbase report to the government about your bitcoin activities. I want to know if anyone on here can tell me step by step on how to exchange my bitcoin for USD anonymiously.

https://localbitcoins.com/ Some people have success here, you will have to pay extra based on the market prices.
77  Bitcoin / Bitcoin Discussion / Re: 'Bitcoin Elite' to Gather on Secret Island for Bilderberg-Style Retreat on: February 03, 2015, 01:16:18 AM
-snip-

Only thing I could think of: http://en.wikipedia.org/wiki/Jekyll_Island#Planning_of_the_Federal_Reserve_System
78  Bitcoin / Bitcoin Discussion / Re: Why can't a private key be calculated from its address? on: February 03, 2015, 01:11:16 AM
If computers can calculate an address from its private key, then why can't they do the reverse and calculate a private key from an address?

Op check out: https://www.khanacademy.org/computing/computer-science/cryptography

Takes less than few hours at most, and its free.
79  Bitcoin / Bitcoin Discussion / Re: Attention Cryptsy Users: Somethings Very Wrong With Cryptsy Lately. Be Advised. on: February 03, 2015, 01:06:56 AM
I've seen my coins appear and disappear tons of times on there, the servers are overloaded. Luckily I only store shitcoins there.
From what I've heard, cryptsy is like the main place to go to purchase and hold the worst of the worst of the shitcoins. My friend, who's had a habit of using a portion of his meager overall bitcoin holdings to purchase crap coins there, had an email alert pop up of someone trying to sneak into his account. He's into the cannibascoin stuff falling prey to all the hype of the organizer thinking it'll 'take off' one day but lucky for him he was able to lock down this account - don't ask me how - and claims he just won't use it anymore until he hopes to exit those coins for bitcoin. However, he still doesn't get that their may never be any other users there that will want his stash of crap. I at least give poloniex credit for de-listing certain coins that are over the top garbage. They have enough alts there to satisfy one's appetite for such things and seem to be head and shoulders more legitimate than cryptsy, just sayin.

Just say no to alts, I wasted at-least 8 months of my life messing around trading/mining/creating one. Main benefit is my understanding of Bitcoin as a whole is much better, in my mind sidechains will eventually kill most existing chains which refuse to peg to Bitcoin as a Sidechain. Sites like Cryptsy might be phased out altogether as advances in/ontop of the protocol emerge.
80  Bitcoin / Bitcoin Discussion / Re: Attention Cryptsy Users: Somethings Very Wrong With Cryptsy Lately. Be Advised. on: February 02, 2015, 07:25:43 PM
Unfortunately Cryptsy is unresponsive, ignoring support requests.  And we are forced to take up the matter in public media.

I hope this is a simple mistake, and not a pattern.  But we’ve given Cryptsy every chance to make things right, yet they continue to ignore us.

I’m helping a friend with an XRP trade.  We choose to exit the position using Cryptsy.

We deposited the XRP in Cryptsy.  And tried to place a stop-loss order.

We got errors with the order.  So we sent a support request regarding the stop loss errors.

A day or 2 later we login to the account to test if Cryptsy has fixed the issue.  The XRP was missing.  We checked the transaction history.  Nothing shows.  It’s as if it was never deposited.

We open a support ticket.

We get a response back asking for the username & email.  We send the username & the XRP deposit transaction details.

And that’s the last we have heard from them.  That was 4 days ago.

We’ve contacted them multiple times since.  All showing in the ticket history.

Yet they continue to ignore us.

In the meantime our stop loss has long been hit, and the market continues down.  Causing us to lose yet more every day.

I want to give Crytpsy every benefit of the doubt here.  But they simply refuse to respond.  

If you have coins in Cryptsy be advised.  Deposits are showing up missing, and Cryptsy simply ignores you when you try to get it resolved!  

Cryptsy agents reading this, get this resolved, or we’ll take up a suit, not just for the missing coins, but also for the wealth lost because of the delay in giving us access to our funds.

Cryptsy, you already have enough legal issues.  Don’t add to the pile.



Saw someone complaining on Reddit about 180 BTC withdrawl being held. For what its worth, I had like 11 Bitcoins on Cryptsy at some point the withdrawal was taking awhile (About 1+ Year ago), Took a couple days after that to resolve the situation. Just remain calm, and prepare for the worst, hope for the best. I can't speak for Cryptsy now, but it has been a pretty reputable site back when I was using it regularly, we all know these things can change quite quickly.
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