[Bitcoin Valley]

Secondo voi la Bitcoin Valley dovrebbe essere replicata altrove in Italia?
Io credo che aiuterebbe moltissimo la diffusione delle criptovalute.
L'evangelizzazione capillare è importantissima, non dobbiamo fermarci ora, dobbiamo insistere.

C'è ancora un mare di ignoranza in Italia, e tantissima gente insiste a comparare Bitcoin a un Ponzi oppure con a dire che Bitcoin non ha valore.
Passate i link ai vostri amici e parenti che insistono in questa direzione e fateli uscire dalla loro ignoranza.
Ogni "convertito" è un piccolo passo avanti per le criptovalute. Dobbiamo collaborare tutti.

[qui]

L'Italia ha un paio d'anni di ritardo rispetto ad altri paesi come diffusione della tecnologia Blockchain.

Leggendo qui sembra che la situazione sia bruttina ma in ripresa, grazie all'iniezione di capitali da parte del governo e altre iniziative... però ci vuole un po' di impegno anche a livello capillare.

Ognuno di noi deve impegnarsi nell'opera di alfabetizzazione di una popolazione refrattaria all'apprendimento e al cambiamento.

A couple days ago I posted here because of a transaction stuck in the void for which I paid 30 dollars fee.
Now, one hour ago, I sent a transaction with a 130 dollars fee.
ONE HOUR, STILL ZERO TRANSACTIONS, 130 DOLLARS FEE.
I'm sorry to write this, but Bitcoin is DEAD.
I've been a defender of it up until now, but we've gone too far.
Who the hell is going to buy Bitcoin when the word will spread?
When people will try to get their Bitcoins from the exchanges, they'll meet this reality, and Bitcoin will be dead in DAYS, after the word will begin spreading.
Just please don't go on BCH, let's try to move onto better technologies like Byteball.
BTW can anyone tell me what should I pay to move my Bitcoins now?
I have now 4 Bitcoins stuck in the void.

Sent yesterday from my Bitcoin Core Wallet some BTC to Coinbase.
Here is the transaction link I took from Coinbase: https://live.blockcypher.com/btc/tx/f8ba7216c918e8b06aa75bbf0d75ac792f023f611697af795b8fab5fc9aa2bdb
Up to few minutes ago, this page reported a transaction in progress, even though it still had ZERO confirmations after at least 12 hours.
Now it simply says that there is no transaction with that code.
But I don't have the funds in Coinbase now, and the funds didn't get back to my wallet either.
Where are those Bitcoins?

[14Tf]

Just sent a small sum to an address for a check, the machine answers that there is now 0 BTC on that address FROM where I sent money.
So I went to a block explorer to check this damn address: 14U61He6rNdgfDBtE2vuytaaDH3y3fHZhU
And I see this: https://blockexplorer.com/address/14U61He6rNdgfDBtE2vuytaaDH3y3fHZhU

The problem: I have no money on that address. I have never received any BTC on that address.
I checked ALL the addresses in my Bitcoin Wallet, and I didn't receive any money to that address ever.

And it emerges: it seems I didn't understand shit of the blockchain.

Address 14Tf is the one that is SHOWN in my Bitcoin Wallet.
As I didn't move a lot of money from that address, I would assume that the money is still there.
But it's not.

Apparently, when I made a small transaction of 0.01 BTC to 14NF to show a friend how Bitcoin works, THE REST of my funds were moved to 14U6.

Then, I made this small transaction of 0.001055 BTC to 14FG and AGAIN my funds were moved onto another address: 1LNz.

Can please somebody with good hearth explain me why oh why if I make a transaction, all the rest of my funds is moved onto another address BUT it doesn't show up in the Bitcoin Wallet AT ALL?

What do you think about 95 million dollars on lending offer on a single exchange?

https://dl.dropboxusercontent.com/u/858716/bitcoin/105000%20BTC%20lending.png

I was just dicking around on the 100 richest Bitcoin addresses, when I found this:

https://bitinfocharts.com/bitcoin/address/19PPeuu4jPjqtefSQ2FDgKmNJ88Z5wiuJt

I can't understand.
This guy bought 10000 BTC, and then let them there, and OK, an investment for the future.
But then you see there's dust and dust and more dust added to this address.
What could have happened here?
Did he buy some cloud mining scam and put automatic payment to this address?
Just curiosity.

Hi!

I am a 45 years old madman, experienced 3D modeler, UI designer, game designer and "half programmer" with an idea for a new "semi-gambling" game.

The project can be completed fully in 2 months. The game isn't related with cards, roulette, slot machine or anything "traditional" like that.

I can make the whole game part, in Unity: graphics, programming, etc., I don't need any help with that.
What I need help with, is:
- Bitcoin API integration
- user database management
- security "expert" to prevent client and server hacking and cheating.
I don't have experience in MySQL etc. and I have no time to learn it right now.
I just want to go live with the product as soon as possible.

Experience in Javascript, MySQL, PHP, or other free database systems is mandatory.
Experience in Unity is welcome, but not necessary.
Experience or study in Bitcoin functioning and security/hacking is a great plus.

If you have some free time you would like to put at work on an innovative project, say 20 hours per week, send me a private message and I'll explain the project in more detail.
We could make some money together.
If you think a project like this can be worked on for 1 hour in the evening when you are tired of playing DOTA, and you are not ready to "waste" some Sunday afternoon/night on it, let it be. Or maybe if you don't like to fight with code entire nights, you should leave the whole coding job alone lol

If you are curious about what I can do, I can send you a build of another project I'm working on at the moment (videogame but not Bitcoin related).

Just got added on LinkedIn by a certain Bryan Young, CEO of MYBTCPOOL.COM

https://mybtcpool.com/

After short investigation I would say that this is a scam.
The guy has no picture in the LinkedIn profile, and neither in the FB profile.

https://www.facebook.com/BryanBitcoin

He claims he studied Crypto Currency at MIT in 2004, but as you probably know, there was no cryptocurrency up until the year 2009.
So I searched deeper.
The website looks "professional" up to a certain point.
But then you find that much of the text has been copied here and there.
The ABOUT US section is not really saying anything about "them".
There's nothing about the people or where they operate.

Additionally, almost all of his "friends" in the FB profile look like Bitcoin scammers.

I would not put a dime into this service.

[36000 houses could be powered for one month]

First of all, if this topic has been touched already, please don't bash me, I tried a search for something similar but couldn't find anything. If so, anyway, just let it drown down or even lock it, I won't be offended.

Second, it may seem that this topic is about mining, but it's not. This thread is about a possible huge point of failure that has never been considered about Bitcoin.



Now, considerations: at the actual price (let’s round it to 600$), each block found gives the miner around 600*12.5=7500$.
If we assume that miners are taking just a small share of overhead on that number, we can assume they pay something like 6000$ to mine those Bitcoins.
Some of those 6000$ are for hardware, a lot is for electricity.
Now, to make it easy, I’ll just assume that 5000 of those dollars are for electricity. This is, approximately, the cost in electricity to uphold the Bitcoin network for 10 minutes.

Assuming an average electricity bill for a house of 20$ per month, this means that 250 houses could be powered for one month with the power used to uphold the Bitcoin network for 10 minutes.
This means that 36000 houses could be powered for one month with the electricity used to uphold the Bitcoin network for one day.

Now, we are all here waiting that Bitcoin's value will rise where it deserves to, replacing or pairing up with fiat currency, and this means we are waiting for it to take off for good reaching 10000$ of value, or even 100000$ or even 1 million $, who knows.
Now you easily see where this is going.
If one Bitcoin is going to be as valuable as 100000$, upholding the network for one day will require the same electricity to feed 5976000 houses for one month.
Are we going to build nuke plants to uphold the Bitcoin network?

The problem is that, with the actual protocol and software, the energy necessary to uphold the Bitcoin network is directly proportional to its value, and nothing else.
In fact, the chain of events to consider is this:

1. Bitcoin price increases because there's more demand
2. People/companies add computational power to the network because there's more money to take from the market
3. The Bitcoin protocol adjusts the difficulty to suck even more electricity to uphold the network.
4. Goto 1.

This, if we look at raw data like I have done.
But there may be variables that I didn't consider, and I don't want to seem that one who knows everything.
I'll be glad to be proven wrong, because I see this as a hurdle coming fast onto the face of Bitcoin, and we may find that countries will ban Bitcoin mining because of this.
So if anyone can bring me additional variables to throw into the equation that could considerably lower the Bitcoin's network uphold cost, I'm all ears!
If there's some different Proof-of-XXX (Proof of Porn?) incoming on the software, that I'm not aware of, I'd be glad to read about it, as much as if there's any other software solution or protocol change that could clear the problem, and the same with anything else that can prove my reasoning wrong.

Again, if this matter has been treated already, just let the thread drown, but please give me the link to that thread!
Thank you!

I downloaded some months ago a wallet that allowed to set up the first letters of an address, but I can't recall the name, can somebody help me?
Also another question: is it possible to import that address into another wallet?
The thing is, I would like to set up a custom address, but then I would like to use another wallet, because I didn't like that wallet at that time at least, because it had some glitches and spell errors.

I know there are many threads about the BEST Bitcoin wallet, but I don't think that's the right question to ask.
There's no best, but only the one that fits better one's needs.

What I'm looking for, is the best way to protect my BTCs.
What bothers me is the fear that some of the developers could slip a backdoor or a mechanism to steal all the Bitcoins from all the wallets one day.
I know this may look an absurd fear, but still, I don't think it can't be ruled out.
I'm also just out of reading about a bug in the CoPay wallet where using a multisig transaction one could steal all the coins in a wallet, due to a bug. Don't know how old that article was though.

However, the problem is that with banks, our savings are protected: if robbers steal the bank, they have insurance, you always can get your money... at least until the government wants to fuck you up and lock your account, of course.
But in normal conditions, you don't have to think about your savings safety: they are there, you forget about them and no problem about robbery.

With Bitcoin, you are your own bank.
This means that YOU have to make sure your savings are... safe.

Now, a phone app would be ok for me. I could print the seed words and put the paper in my father's strongbox.
But as I wrote here up, I am scared by developers themselves.
I know that most wallets are open source, and anybody can check the code, but still I don't know WHO or IF the code of wallets has been really checked by anybody.
I myself surely can't check it.
My programming skills are very basic and I don't know enough of blockchain functioning to check anything, and I guess the same goes for 99999 people on 100000 on the planet.

So my question is: what is the most secure wallet out there? I suspect it's the Bitcoin Wallet from the Bitcoin Wallet Developers, right?
Still, how can we be sure they are not going to group up and fuck up everything when Bitcoin price will go up?

This in regard to the Bitcoin Wallet.
Switching to "third party" wallets, we have more problems: even though the developers make the code open source, how can I know that they won't one day upload a completely different version to the Store and get my money? Is this a realistic possibility?

With hardware wallets, the problem persists and becomes even worse. Of course hardware wallets can't be open source (I think), so nobody can check what they really do and what's really running in their chip.

Well, I think I made my point clear.
Hope somebody can help me up in choosing the most secure wallet out there.
Thank you in advance!

I just made this transaction almost 2 hours ago: https://blockchain.info/tx/8f4d994f4df6e5b1c2180c1f3fd69af30a71bf714d84d023a7755e2ac6f7dd41

Says it's high priority, but despite this, it's still not confirmed, 0 confirmations.

Are the fees too low???

As per title.

A while ago I've read that only X quantity timestamping can be written into the Bitcoin Blockchain per day (or per block? can't recall).
I would like to know what are the exact limits, as I can't find them anymore after 1h search 

[People fall into two categories:the ones who own Bitcoins,andthe ones who will only own some Satoshis./]

People fall into two categories:
the ones who own Bitcoins,
and
the ones who will only own some Satoshis.
/

Saint Bitconio, ca. 2009 D.C.

Has anybody noticed that the SELLING volume is less than half than the ASK volume?
In other words, there's TWICE the request than what's available on the market.

It's true there's no meeting on the price, but it's just a matter of time... sooner or later those that want to buy will accept that the price will not go down anymore, and the buy frenzy will begin.



This is Poloniex though, I don't know how it's going on the other platforms.

What's your thought about the situation?

[ANSWER]

As this matter is often asked, I thought I'd make this post, so that when somebody search for it, the answer immediately appears.

Keywords: bitcoin number of possible addresses, banks, hackers, computers, numbers, addresses.



ANSWER

Bitcoin has 1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976 of possible addresses.

So let's make one hypothesis: a set of banks wants to destroy Bitcoin by generating addresses.

They buy 1 million of computers or equivalent computational power.
It's already nearly sci-fi, but let's believe that it's possible.
Each computer can generate 1000 addresses in one second: that's something more than 30 billions of addresses per year.

So we have each year 30 billions of addresses * 1 million of computers.
That's 30'000'000'000'000'000 of addresses in one year.
If banks let run those computers for 10 years, they would still have only 300'000'000'000'000'000 of addresses.

That's still infinitely less than: 1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976 of possible addresses.



Edit: user shorena, that knows more than me about the subject, just suggested the following:

My GPU can do ~38 million per second, lets just take 35 million addresses per second, to make it easier.
If you are considering an attacker that has money, I will assume 4 GPU's per machine, so 4 Million GPUs (1 million computers) at 35 million per second or 140,000,000,000,000 keys per second in total.

140'000'000'000'000 * 60 * 60 * 24 * 365 = 4,41504e+21.
Let's make it round: 400'000'000'000'000'000'000'000'000 addresses per year.

As you can see, it's still infinitely less than: 1,461,501,637,330,902,918,203,684,832,716,283,019,655,932,542,976 of possible addresses.



But there's another thing to hold in account: each address needs memory:

I would also suggest you add disk space, because every key needs 32 byte at perfect storage and with the above keys per second thats 4480 TeraByte per second.

I would dare say that it's not so much important the computational power, but the memory, because when you can fill 4480 TB in one second... you need hard disks that will probably be available in 2050.



So, as you can see, even going for a worse scenario, there's still no chance to dip into the immense number of possible addresses available in the system.

And it's not even a question of address generation speed only, but more a question of hardware, of memory hardware.

Can I uninstall the old version after I installed the new one or should I uninstall the old before?
I am scared of uninstallation, I don't know where the wallet is stored.