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461  Alternate cryptocurrencies / Altcoin Discussion / Re: Earning money in my sleep ! on: August 16, 2018, 01:10:50 PM
...I get a very nice profit on my primairy investment of 1 BTC. Mostly 20% or more on a monthly base...
Forgive me, but I somehow doubt this.

To get 20 percent montly increase on your investment means to get a yearly rate of unbelievable 792% (if my math is right).

I cannot take seriously anyone who promises me such huge returns.

462  Alternate cryptocurrencies / Altcoin Discussion / Re: Bitcoin and Cryptocurrencies’ Regulation in Europe on: August 16, 2018, 12:37:24 PM
It's not surprising that the European Union, as a strong bureaucratic state, will try to regulate the crypto space in all ways that it can.

But I didn't think that they would go as far as to prevent its member state from introducing its own cryptocurrency:

Quote
The E.U. prevents countries from introducing their own cryptocurrencies to prevent over competition; Estonia was forbidden from making Estcoin, a government backed currency, by the Union recently.
Source: https://blog.amon.tech/bitcoin-and-cryptocurrencies-regulation-in-europe/
463  Alternate cryptocurrencies / Altcoin Discussion / Re: trying to start an alt-coin online miner on: August 16, 2018, 10:45:35 AM
Your website starts mining with visitor's CPU right away, without asking anything.
Just visited the link and I can confirm this. So a word of caution: don't click on the website link.

The question is does the OP want to trick people into using their computer's CPU power without asking or not?

If the second is true, you should immediately make the necessary changes and ask for permission first!

Somehow I doubt that the intentions are honest. You have listed BTC, LTC as minable coins, which is out of the question for CPU mining even if you trick a lot of users into joining your program.

464  Alternate cryptocurrencies / Altcoin Discussion / Re: A tutorial for building a Proof of Stake cryptocurrency on: August 16, 2018, 10:15:33 AM
It looks very interesting. I might give it a try.

Based on the Naivecoin tutorial to build a Proof of Work cryptocurrency with NodeJS / Typescript, I made a Proof of Stake tutorial.
So the code is written in javascript, right? What about Ruby, where is it needed? On the github page, you mention Ruby and Gems as part of the requirements. I've never worked with the Ruby platform before and it could be trickier to install, at least for me.
465  Other / Beginners & Help / Re: Hard Fork on: August 16, 2018, 07:25:10 AM
Your question has been answered so many times here on the forum. For example, start here:

https://bitcointalk.org/index.php?topic=4227118.0

Also, Andreas has a nice explanation of this topic in his book Mastering Bitcoin:

Quote
In Blockchain Forks we looked at how the bitcoin network may briefly diverge, with two parts of the network following two different branches of the blockchain for a short time. We saw how this process occurs naturally, as part of the normal operation of the network and how the network reconverges on a common blockchain after one or more blocks are mined.

There is another scenario in which the network may diverge into following two chains: a change in the consensus rules. This type of fork is called a hard fork, because after the fork the network does not reconverge onto a single chain. Instead, the two chains evolve independently. Hard forks occur when part of the network is operating under a different set of consensus rules than the rest of the network. This may occur because of a bug or because of a deliberate change in the implementation of the consensus rules.

Hard forks can be used to change the rules of consensus, but they require coordination between all participants in the system. Any nodes that do not upgrade to the new consensus rules are unable to participate in the consensus mechanism and are forced onto a separate chain at the moment of the hard fork. Thus, a change introduced by a hard fork can be thought of as not "forward compatible," in that nonupgraded systems can no longer process the new consensus rules.
Source: https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch10.asciidoc The emphasis is mine
466  Alternate cryptocurrencies / Altcoin Discussion / Re: Ethereum Classic (ETC) launches at 5pm PT tomorrow on Coinbase. on: August 16, 2018, 07:09:35 AM
ETH Classic is sort of the losing side in the battle with ETH. Or, you can say that ETH Classic was the moral winner, sticking with the immutability of the Ethereum blockchain.

ETH, on the other hand, hard forked to deal with the DAO hack in an easy way. They attracted the majority of users and became a defacto winner in this battle. Had they not done so, probably we wouldn't have had these countless Dapps running on Etherium. But in doing so, they compromised the most important principle of immutability of the blockchain.

You can argue that both of them are shitcoins. I don't hold and wouldn't invest in any of them, but if I had to choose, my preference goes to ETH classic.
467  Alternate cryptocurrencies / Altcoin Discussion / Re: Marketing Tactics Altcoins Use on: August 15, 2018, 09:25:17 PM
We dabbled with Airdrops and giveaways but there was an enormous amount of bots participating and it wasn't useful to us.
How about a proper bounty campaign? One that would include twitter, facebook, creative content campaign (youtube, blog posts, articles), and a signature campaign.

In order to eliminate (or greatly reduce) spam and bots, don't run the campaign on your own. Hire an experienced bounty manager. I've worked with some of them who have zero tolerance for spam.

I don't see much use of airdrops. I personally rarely take part in them. There is too much noise, with little or no real promotion for you.

468  Bitcoin / Development & Technical Discussion / Re: Two Questions About Multisignatures on: August 14, 2018, 08:20:51 PM
No. P2PKH addresses (prefix of 1) doesn't allow the creator of the address to set a pre-defined condition. P2SH has scripts which allows the creator to set conditions for the outputs to be spent. The only thing that restricts P2PKH is to have a valid signature.
Any thing that you can code with the bitcoin script language can be turned into a p2sh address.
I see, thanks for clearing this up. So P2SH addresses are the ones that actually enable complex scripting necessary for multisignatures.

However no wallet supports such solutions out of the box right now so while it's possible it's out of the reach of lay persons.
So better to stick to mutlisig wallets. Just a thought. Given that some opcodes are disabled on the Bitcoin network, it could still happen that a complex script made by hand isn't currently redeemable after all.

To summarize point 2, in practice, the 3 of 4 wallet could be an easy solution.

Thank you all for your replies.
469  Alternate cryptocurrencies / Speculation (Altcoins) / Re: Shouldn't coinmarketcap delist "dead" coins? on: August 14, 2018, 02:43:31 PM
I got this information, for listing at Coinmarketcap which now no longer requires trading volume.
right or not I don't know.

In their official FAQ, one of the conditions for listing is the following:

Quote
- Must have a non-zero trading volume on at least one supported exchange so a price can be determined.

They don't explicitly state what this non-zero trading volume should be.

I also was under the impression that they require a volume of at least $100,000 per day (or $50,000 according to some sources), but it seems that they have removed this criterion:

Quote
As of July 16, the site has now removed the minimum volume requirements that it had been using to limit the number of exchanges listed on the site.
Source: https://cointelegraph.com/news/coinmarketcap-rehauls-exchange-listings-in-response-to-controversies-over-skewed-volumes

So basically they say that the volume can be manipulated, so they don't have it as a strict requirement. But, it's hard to believe that they won't internally somehow estimate the volume and still use it as one of the necessary requirement.

I agree that the opposite should be true as well. To delist the coin once it shows signs of inactivity.
470  Bitcoin / Development & Technical Discussion / Two Questions About Multisignatures on: August 14, 2018, 12:28:32 PM
I'm a total beginner when it comes to multisig addresses and wallets, so I would appreciate some help from the community.

1. I know that you can make a P2SH (pay to script hash) address that can be redeemed by a multisig script. But can you create a multisig wallet for P2PKH addresses? 

I see that Electrum has this option (it asks for standard vs Segwit multisig wallet). It is somehow not clear to me how the output script is redeemed in the first case, as we have to have a hash of a multisig script, not a hash of a public key.

2. Second, I wasn't able to find a decisive answer, so probably what I'm suggesting is not possible. But it won't hurt to ask.

Let's say I want to make a multisig 2 of 3. Is there a way to make one of the signatures mandatory?

This would be convenient in hypothetical situations like the following. Let's say the money belongs to me, but I want to involve other people (to possibly improve security) so I create a multisig address 2 of 3:

  • the 1st key is held by me
  • the 2nd key is held by a relative
  • the 3rd key is held by a friend.

If the first key is mandatory, my relative and my friend cannot conspire against me and steal my money.

Is there a place in the redeem script for complex logic that is probably needed to define what keys are optional and what mandatory?

After some consideration, it occurred to me that what I'm trying to achieve can be done by a 3 out of 4 multisig:

  • the 1st key is held by me
  • the 2nd key is held by me
  • the 3rd key is held by a relative
  • the 4th key is held by a friend.

so the dilemma is solved, but still the question remains, can there be a mandatory signature in a multisig solution?

Thanks in advance and sorry if some of these questions are dumb or obvious.
471  Economy / Trading Discussion / Re: What exchange do you use to trade Futures? on: August 14, 2018, 11:58:30 AM
I'd say Bitmex is currently the #1 for Bitcoin futures trading.
I second that. If you are going to trade futures, there's no better exchange. Here is a nice list of bitcoin futures exchanges

http://www.bestbitcoinexchange.net/futures/

with an overview of their pros and cons, trading fees, types of trading, etc. Still, I would stick with bitmex.

In my opinion, popular and trusted exchange is-
  - Binance
  - bittrex
  - poloniex
I use bittrex for tradeing

You can't trade futures on those exchanges.

Binance, for example, plans to include futures trading in the near future, along with margin trading, DEX, and some other features.
472  Alternate cryptocurrencies / Altcoin Discussion / Re: Market cap on: August 14, 2018, 11:14:03 AM
It doesn't mean anything. To see this, you you can compare the cryptocurrency market cap with all the other money markets. You will see that even at its ATH, the crypto market cap was ridiculously small. Compare it, for example, with Fed's balance sheet of about $4.2 trillion, or with the broad fiat money supply of around $90.4 trillion, or with derivatives market of $544 trillion.

There is a nice infographics for this comparison which is too large to embed here, but it's worth taking a look at:

http://i0.wp.com/money.visualcapitalist.com/wp-content/uploads/2017/10/all-the-worlds-money-mp-infographic-1360.png?w=1360

All this considering, cryptocurrencies represent just a small drop in the global pond of word's money. This also means that the crypto market cap has plenty of space to grow, and IMO it will grow well into the trillion range in the future.

473  Alternate cryptocurrencies / Altcoin Discussion / Re: Cardano Pay in progress with Google Chrome on: August 14, 2018, 07:59:50 AM
According to the article it's just a lightweight wallet for ADA that you can install as a Google Chrome Extension. IMO it's nothing new or revolutionary. We have such wallets for other currencies, Metamask for ETH, etc.  

Now if they can integrate this wallet with third party applications for online payments, that could mean something. In any case, they will have to do a great job with respect to security because this wallet will have to run as a client side application (javascript). As such, it will probably be susceptible to malware, phishing, and other malicious attacks.  
474  Alternate cryptocurrencies / Altcoin Discussion / Re: Ethereum - Total supply, POS and future price? on: August 13, 2018, 09:51:31 PM
What are you talking about? Number of circulating Ethereums are more than 101 millions!

You are right. The total supply has already crossed the limit projected by Vitalik in his reddit post:

Quote
Hence, in the foreseeable future, the supply will not go far above 100 million.

So now, Vitalik proposes to limit the total supply to about 120 million:

Quote
Meta: cap total ether supply at ~120 million

or even 140 million coins:

Quote
If for some reason this EIP is adopted at a point where it is too late to set a max cap at 120 million, it is also possible to set a higher max cap. I would recommend 144,052,828 ETH, or exactly 2x the total amount released in the genesis block including both the sale and premines.

Obviously, one of the most important attribute of a well designed currency is scarcity, and the ETH community has to find a way to limit the supply. Currently, they have an inflation rate of approximately 10 percent per year. IMO, that's too much.
475  Alternate cryptocurrencies / Speculation (Altcoins) / Re: VeChain and WanChain - long term investment on: August 13, 2018, 09:36:11 PM
I don't know much about these coins, but I managed to find a sort of warning thread about VeChain on BCT (maybe it's just FUD, who knows). So it's not easy to tell if you should trust this coin or not, but you should certainly look at it from all possible sides. Also check out this thread for a much more balanced discussion. 
476  Economy / Scam Accusations / Re: robbed using metamaske wallet on: August 13, 2018, 09:13:58 PM
Sorry to hear about this. Could it be that you've been targeted by a phishing attack?

Metamask is known to be vulnerable to phishing in case your computer has been compromised. Were there any other tabs opened in your browser? For example, a phishing may occur when other tabs are active during the transaction that you are trying to make. The attacker may use a tab to get access to your ETH address. With this knowledge, the attacker can retrieve the entire transaction you are currently making (this is a public record on the blockchain), and use this information against the you in various phishing schemes. 

Did you notice any pop-ups, failed transaction notifications, or similar out of the ordinary events?
477  Alternate cryptocurrencies / Altcoin Discussion / Re: Reporting Bugs in the Age of Cryptocurrencies on: August 13, 2018, 06:03:31 PM
Here is a quote from the article that I believe nicely illustrates the point here:

Quote
As cryptocurrency developers, it is necessary to take a step back now and then to re-evaluate the tools at our disposal, as well as the policies and procedures that we put into place. We may not be able to eliminate the threat of bugs like these, but we can learn from them and be better prepared to handle them in the future. ~Cory Fields, Bitcoin Core developer
Source: https://finrazor.com/news/reporting-bugs-in-the-era-of-cryptocurrencies

All this just goes to show how critical cryptocurrency programming is. You have to have first class programmers, or you are willing to put huge amounts of money at stake. Once I heard Jameson Lopp in a podcast talking about bitcoin programming. He was comparing bitcoin programming to rocket science -- there is no room for mistake in either of them.

478  Alternate cryptocurrencies / Mining (Altcoins) / Re: Orphaned blocks issue on: August 12, 2018, 08:17:17 PM
yep, it's litecoin cash (lcc), my pool hashrate ~ 250TH,  nethash is about 21PH
I don't think 2.5 minutes is a low enough block time to explain what's happening to your pool. There has to be something else at play. If you can easily switch to mining another coin with different characteristics, you may be able to check if it also gives you a lot of orphaned blocks and narrow down on the possible source of error.
479  Alternate cryptocurrencies / Mining (Altcoins) / Re: Orphaned blocks issue on: August 12, 2018, 03:56:32 PM
Some coins with block times that are relatively short and with high network hashrate (compared to your pool hashrate) may give you a lot of orphaned blocks.

I have no idea if that's the case with your coin and your pool. BTW, what coin are you mining?

Edit: I just noticed that you wrote LCC. Is it Litecoin Cash? It has a relatively small block time of 2.5 minutes, but I have no idea about the total hashrate.
480  Bitcoin / Development & Technical Discussion / Re: Is Virtualization good enough ? on: August 12, 2018, 03:24:42 PM
I don't think so. It's the other way around, you keep your PC secure from all the bad things that may happen if you install some insecure software in the Virtual Machine.

Read this post:

https://bitcointalk.org/index.php?topic=2264427.msg22944253#msg22944253
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