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11101  Local / Português (Portuguese) / Re: Bitcoin - Perguntas e Respostas. on: July 09, 2019, 02:13:44 PM

Então não seria correto falar O Bitcoin e A bitcoin?

Acho que o certo é O bitcoin.

Moedas podem ser masculino, tipo O dólar.

Satoshi poderia ter criado dois nomes, um pra moeda e outro pro sistema Tongue

Vitalik fez isso, Ethereum e Ether. No final ficou todo mundo chamando Ether de Ethereum kk
11102  Other / Beginners & Help / Re: What is sharding? How this will overcome the scalability issues of blockchains? on: July 09, 2019, 01:32:13 PM

This forum is certainly one of the best place to learn about blockchain.

So many people come here talking about all those new technologies which are supposedly better than bitcoin.
I hear that everywhere, even in my real life when people ask me about bitcoin "But isn't bitcoin using an old tech? slow and expensive. A better crypto may show up".

This idea is all over the media, and it is not entirely true. Decentralization and security are the main pillars of bitcoin, and trading them for scalability will only weaken bitcoin. And scalability is not an issue yet, as most of the time transactions are cheap and somehow fast (i am satisfied with 3-4sat/byte and about 2hours, which I get most of the time).
11103  Other / Beginners & Help / Re: earning bitcoin at Iran on: July 09, 2019, 01:12:00 PM
Im guessing you have internet and a computer...just search for online work payed in Btc...there is a lot of possibilites up to anybodys potencial...good luck Smiley

Yes. This is the best answer to OP question.
In the services tab here in the forum you can get paid in BTC for basically anything that can be done online.

From developing new software to bounties, signature campaigns, writing articles, reviewing other services... Mining is also a good option.

Even declared illegal to trade bitcoin in Iran, you can still accumulate some bitcoin by doing some online work.
11104  Other / Beginners & Help / Re: Permissioned block chain. Smart contracts execution? on: July 08, 2019, 11:03:05 PM
In such case I understand that PoW would not be adequate. Especially that rapidity is a key element here. Therefore, would PoS be more adequate? Or is there other process more appropriate for small BC?

Best regards,
Big

A blockchain with a small blocktime Will have fast confirmation, no matter of pow os pos.
Ethereum blocktime os less than 15 seconds, so confirmations are almost instant.
11105  Alternate cryptocurrencies / Altcoin Discussion / Re: US Government vs. Facebook Libra on: July 08, 2019, 05:55:19 PM
Facebook Libra will have to obey the law and any judicial decision. As it is a company, it must obey or it will be just shut down.

Facebook indeed has a lot of resources, but in the end they must obey regulations. Maybe Libra project gets postponed
11106  Bitcoin / Legal / Re: International regulation of cryptocurrencies on: July 08, 2019, 05:29:02 PM
Let people be free to transact with whoever they want, without any government interference

You can do so through peer to peer transactions, which is what Bitcoin is for. Not one entity can stop your transactions if they don't like you or the recipient.

Governments can only exercise control over the centralized ecosystem, which is what we have seen them do for over a year now in quite an aggressive manner.

The more adapted governments are to what Bitcoin is and how it works, the more aggressive their regulations become. Japan is the perfect example of that. It was praised as the safe haven country for Bitcoin initially, but after a while it became clear that Japan definitely isn't a safen haven country for Bitcoin. They definitely shot themselves in the foot there.

For various reasons (such as international treaties and domestic laws), countries must create laws and regulations against money laundry,terrorism, etc... This obligates countries to require identifications, block some suspicious bank accounts, etc... Bitcoin goes against all that.

Regulations will never be too friendly to bitcoin.... because it is just wild, unregulated. I hope that it don't get banned or prohibit some day
11107  Bitcoin / Bitcoin Discussion / Re: 🔥🔥🔥Blockchain entry series 2:What is a public key private key?🔥🔥🔥 on: July 08, 2019, 05:10:30 PM
The public key is part of the EOS account information and is public.

If your guide is directed to EOS, this is the wrong board.

It looks like your guide isnt about EOS, but you somehow copy/paste some phrases from other guides (this one probably from an EOS guide)
11108  Alternate cryptocurrencies / Altcoin Discussion / Re: TRX? on: July 08, 2019, 04:06:12 PM
On the one hand, the performance is so good and they have a project that sounds good. But on the other hand there is too much circulating... What do you think?

You shouldn't make your opinion based in neither number of circulating coins neither past performance.

IOTA for example had a great past performance and now looks nearly dead. Circulating coins is not relevant at all. The project can be good with 1million or 10000 billion circulating coins, this makes no difference.

You should look at fundamentals, which you clearly are not able evaluate now. Before that you need to study the technology involved...

I would advice you to invest only in BTC, or mostly in it. And start reading and studying. When you are ready, look for other projects.
11109  Other / Beginners & Help / Re: Permissioned block chain. Smart contracts execution? on: July 08, 2019, 02:16:36 PM
What I don't understand is:
-do we need miners to validate and "activate" smart contracts once the conditions are met?
Yes.
Smartcontracts are in the blockchain. If the contract condition is "send 1 eth to address", only when that eth reaches the address, and that block is mined, the smartcontract will be validated.


-does smart contract need to passe through a block to be executed? If yes, what king of process work the best (proff of stake?). If no, can I assume that no particular computer power is needed?
Yes, needs a block, as I said earlier. The best and most secure protocol is still PoW, as all decent coins around are using PoW (btc and ethereum). Ethereum is a blockchain designed specifically to run smartcontracts,and they are using PoW.


-lastly, under what form the information would go through the block chain? Would it be tokens?
No, smartcontracts are not made of tokens. The information goes through  scripts. in ethereum the language used to design smartcontracts is called Solidity.
11110  Bitcoin / Legal / Re: International regulation of cryptocurrencies on: July 08, 2019, 01:07:11 PM
Hey guys, what do you know about the International regulation of cryptocurrencies? Especially in different countries, let's follow an interesting overview ➡️

International Regulation = World government.

I am strongly against.

Bitcoin is about International Desregulation.

Let people be free to transact with whoever they want, without any government interference
11111  Bitcoin / Development & Technical Discussion / Re: NEWS FLASH! Hardware wallets still aren't secure, and they never will be. on: July 07, 2019, 11:58:43 PM
Disconnecting a computer in this way, even if booting from a live USB/CD, does not guarantee safety by any means.

Exactly.

The computer could get infected while online.

So much misinformation. A guy simple turn off the wifi an think this is better than a hw... This is why so many people lost BTC and get hacked. It is not easy to be responsible for your own money . You need to read and get informed

A permanently offline computer is certainly more expensive than 90usd hw and probably less safe (unless you have far more knowledge than an "average tech guy" and lots of time and are willing to work)
11112  Bitcoin / Development & Technical Discussion / Re: NEWS FLASH! Hardware wallets still aren't secure, and they never will be. on: July 07, 2019, 04:00:57 PM
This is insane. Paper wallets have additional security vulnerabilities that HW wallets do not have.

When using a paper wallet:
  • You must use a(n) (offline) computer to generate the private key to a paper wallet, and the portions of the private key may remain on the computer long after the fact. This is not a risk with HW wallets
  • You must use a printer to print the private key for a paper wallet, and portions of this image may remain on the printer long after the fact. This is not a risk with HW wallets
  • You must transfer the private key of your paper wallet onto a(n) (offline) computer to spend any of your coin, risking the private key remains on your computer long after the fact, and risking that someone will take a picture of your private key/paper wallet. Neither of these are a risk with a HW wallet
  • An attacker may be able to compromise your paper wallet by being in possession of it temporarily for only a few seconds via taking a picture of your paper wallet. For a HW wallet to be compromised, the attacker must be in continuous possession of your HW wallet for a longer time, and must be in proximity of special electronic equipment. An attacker could stumble across a paper wallet, and compromise it without your knowledge, while a HW wallet being compromised without your knowledge would require a more targeted attack.


-snip-

Chris, stop being so aggressive and childish. You could learn a lot from this conversation. Generating a paper wallet is much more complex to be safer, it will require a lot more work.
As an "average tech guy" (as you said) there are a lot of small risks and vulnerabilities that you are ignoring or you don't understand at all. Printers, spending..., Some people even consider using one computer/printer only for that, which is more expensive than a HW.


It is also less practical to spend funds. You would eventually have to air gap the computer again to generate more keys or make a transaction  and even a one small mistake could compromise its security. Using a hardware wallet is much easier and you never expose your keys, even to spend.
11113  Economy / Gambling discussion / Re: Do you have a strategy in Mine games on: July 07, 2019, 01:38:21 PM
I'm enjoying this game very much I thought I got the right sequence so I made 10 times of my bet but when I hit bet I was caught by a mine, and I thought I got the right sequence, do you have the same experience like mine just when you thought you got it and made a huge bet then you were caught.

It happened to me already. Win a lot of times in a row, get lots of confidence, only to get cought and lose on a higher bet....

There is no right way to play this, just click... it is luck.
11114  Local / Português (Portuguese) / Re: "Campanhas de assinaturas que aceitam posts locais" 2.0 (Tem campanhas abertas) on: July 06, 2019, 04:43:47 PM
Até onde eu sei não pode não. Tanto que a mensagem diz “banned from posting and send private messages” ou algo do gênero. So se tiver um exploit de responder os PMs pelo e-mail e eles serem enviados.
Ixifoi Mal passar a informação errada
 Achei q era só de postagem.

Não era exploit nao kk
11115  Bitcoin / Bitcoin Technical Support / Re: WTS my smartphone but I've got crypto in it. HELP! on: July 05, 2019, 05:14:15 PM
Just move the coins off of a wallet made on the phone?

This is certainly the best solution.

You do not have to worry any more about completly wiping your phone as long those "leaked" private keys contains zero funds.

Just  move all your coins that ever touched your old phone.
11116  Other / Beginners & Help / Re: Be careful before investing in IEOs on: July 05, 2019, 05:11:15 PM
Exchange market is highly competitive. There are many good exchanges out there, and reliable ones, such as binance, kraken bitstamp coinbase...

I really don't see too much of a reason to invest in a new created exchange, which will be riskier for users.
11117  Economy / Speculation / Re: !!! Q3 game is life, Quarter 3 prediction game !!! on: July 05, 2019, 04:57:34 PM
I made a very crazy Technical Analysis
It will be 14873 usd

Thank you for this competition micgoossens =D
11118  Bitcoin / Development & Technical Discussion / Re: NEWS FLASH! Hardware wallets still aren't secure, and they never will be. on: July 05, 2019, 04:38:29 PM
Saying that "Hardware wallets still aren't secure, and they never will be." because a physical stolen device can be hacked is a bit sensationalist, isnt it?

What are the chances that a hacker come into my house, search and find my ledger and steal it? This is highly unlikely to happen, especially if you are a discrete person about your btc holdings.

Hardware wallets are still safe enough, especially for newbies.

If you don't have a hardware wallet, use an offline generated private key/seed (aka "paper wallet").
I might be misunderstanding you here, but how is this safer? If your concern is regarding a physical attack on your hardware wallet, then surely with a physical attack on a paper wallet it is completely trivial to steal your coins?

LOL

Paper wallet are much more complex to be really safe. Not everyone is able to properly airgap a computer , and the risks involved in case of a mistake are very high.
11119  Economy / Services / Re: Do not miss the chance to get a reward for testing new mode of [banned mixer] on: July 05, 2019, 01:03:22 PM
I want to review your service as well. Waiting for confirmation
11120  Other / Beginners & Help / Re: Why few cryptocurrencies requires more no. of confirmations on the Blockchain? on: July 04, 2019, 12:59:08 PM
They require more confirmation because either the block time is so fast or the hash rate/power/validations are still low, so 1 or 2 confirmation could be easily modified/edited/attacked by malicious user/node as long as they have enough power. Bitcoin hash rate is so big that it's nearly impossible or require a lot of economic costs just to attack a new block/change 1 confirmation, which is why some exchange or merchant accept 1 confirmation.

Yes, this is the case.
BTC blocktime is 10minutes, so 6 confirmations is about 1 hour.

Other blockchains have a much faster blocktime, like Ethereum which has something like 15 seconds.

As you said hash power of the network is indeed a problem. Recently bitcoin gold suffered a 51% attack and some exchanges lost money. So exchanges are now more cautious about confirmations of small coins, in case of a 51% attack.
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