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241  Bitcoin / Development & Technical Discussion / Re: Is double spending easy to do? Burguer king accepting zero confirmation transact on: January 19, 2020, 08:08:52 PM
or they will be bankruptcy in no time.
I highly doubt that the 0.000001% of customers who use Bitcoin to buy a couple of hamburgers are going to exploit 0-conf in such a way that Burger King would go bankrupt Tongue

But there are lots of ways to make double-spending very uneconomical. Think about excluding certain transactions; only make transactions that are in the upper bound regarding fees p /vbyte qualify, etc.

See https://bitcointalk.org/index.php?topic=5195367 if you're curious about more measures.
242  Economy / Service Discussion / Re: Question about instant exchanges on: January 19, 2020, 01:27:09 PM
EDIT:

Compare their rates and use the best one. Damn, it's like we're searching for the cheapest flight ticket on numerous booking sites. Business idea: create a site like skyscanner but it's for instant exchanges. Or is there anything like this already? Cheesy
I think that that's the premise of CoinSwitch and Bestchange.

They allow you to compare the exchange rate of various exchanges (also exchanges such as HitBTC / Binance), but with coinswitch at least i know that they also recommend exchanges such as Changelly, and in the past i believe there was some controversy since Changelly sometimes asks people for their KYC.

(Or was there? I think i might be recalling the wrong exchange, as i can't find anything about what i just described Tongue)

So i'm not that comfortable using those kinds of sites either.
243  Economy / Service Discussion / Re: Question about instant exchanges on: January 19, 2020, 12:55:55 PM
Helo everyone I was looking for instant exchanges and was wondering if you can give me some info on any similar service to shapeshift BUT without the registration?

I'm looking for one where I'll be able to make the whole thing fast and that's easy to use.

A lot of users seem to suggest flyp.me . I haven't tried them myself, so i wouldn't know how comfortable they are to use. I do however know that depending on how much you're looking to exchange, you might need to do multiple transactions.


Alternatively there are sites like Bestchange, Coinswitch, Changelly, but i myself would steer away from these.


Edit: After a bit of searching i found a list compiled by OSS - https://bitcointalk.org/index.php?topic=5218464  Again, i've never heard of most of the exchanges mentioned, but they seem to be reputable (Huh)
(I myself would stick to flyp.me)
244  Bitcoin / Bitcoin Technical Support / Re: How to regain access to BTC sent to BSV address on: January 17, 2020, 05:27:18 PM
Unfortunately I have already tried it. ElectrumSV doesn't show my address Sad
Did you change the derivation paths? Again, it seems to be working for me.
245  Bitcoin / Bitcoin Technical Support / Re: How to regain access to BTC sent to BSV address on: January 17, 2020, 05:17:50 PM
How to export private key? I have only 12 words for recovery.


You need to download ElectrumSV- this is an electrum FORK of the bitcoin version of Electrum, specifically made for BITCOINSV.

Then; you need to click -> Restore wallet -> I already have a seed.

Fill in your seed; and when they ask you for the derivation path; use :  m/0' (Use exactly this; or you will get the wrong adress.)

Then, go to 17Yv3c1cGDr9NQ6g4CuM3SvLzcKw7qTU4N; right click on it and click PRIVATE KEY.

Then; copy the private key, leave the redeemscript for what it is..

Then; download Electrum (Which is the non-forked version in which you will be able to see your bitcoin balances, instead of your bitcoinSV balances.)

Once you downloaded electrum, create a new wallet -> import private keys or adresses. -> paste the private key. voila; your funds should be there.



There's probably an easier way to do this; but this works for me.
246  Bitcoin / Bitcoin Technical Support / Re: How to regain access to BTC sent to BSV address on: January 17, 2020, 04:44:48 PM
Do you own the private key belonging to that adress (in your BSV wallet?)

If so; all you have to do is export the private key of 17Yv3c1cGDr9NQ6g4CuM3SvLzcKw7qTU4N, and then IMPORT the same private key into a Bitcoin wallet such as Electrum. https://electrum.org/#home

I'm not sure if the seed of Handcash is compatible with Electrum, but otherwise that is also something you can do (try) (as suggested by royse)

Edit: i've been playing around a bit with the Handcash (BETA) app in the Playstore through Bluestacks, and exporting the seed into electrum; it does not generate the same adresses for me (either).

I'll try some workarounds.
247  Bitcoin / Armory / Re: Im running Armory 0.95.5 on windows 10 and its stuck on Preparing Databases on: January 17, 2020, 03:31:07 PM
Post your log files. Is Bitcoin core running correctly?
but i cant seem to figure out how to make the scan happen so i can go online
You do know you need to fully sync bitcoin core before going "online" ?

For reference; see threads like this one, and whether or not the help given in these threads resolve your issue: https://bitcointalk.org/index.php?topic=5179186.

248  Other / Beginners & Help / Re: What is the actual fee % on a transaction? (or let's calculate this!) on: January 17, 2020, 01:51:36 PM
1. How the transaction fee % is changing over the years.

2. The transaction fee % for smaller transaction amounts which are the majority of transactions (as transaction size does not impact the fee, so larger transactions skew the % down).
1. -> you can see the average fee in USD$ that a transaction had (note! this is not the average sat/b!) here. https://bitinfocharts.com/comparison/bitcoin-transactionfees.html
Which is, as you can see, heavily correlated with changes to the bitcoin price.


Quote
2. The transaction fee % for smaller transaction amounts which are the majority of transactions (as transaction size does not impact the fee, so larger transactions skew the % down).
Actually, smaller transactions pay a relatively higher fee than big transactions transacting bigger amounts. (that is if we're comparing 1 input  v 1 input.)

There's also not a %, but rather, a sat/b where the amount of bytes really determines your fee, not the amount you're trying to send.
As hossein already said; the amount of bytes a transaction contains is heavily influenced by 2 factors: A. the kind of adress you use (1xxxx legacy (worst) 3xxxx nested segwit (better) bc1.... native segwit (best))
and B. the amount of inputs you're either using or creating.

To calculate the amount of bytes you can check some of the documentation below:
https://bitcoin.stackexchange.com/questions/1195/how-to-calculate-transaction-size-before-sending-legacy-non-segwit-p2pkh-p2sh

Edit: I believe that those formula's given above are quite old now, and with the introduction of segwit it might not be *completely* accurate anymore (only for the transactions using segwit).
(For segwit, see https://bitcoin.stackexchange.com/questions/87275/how-to-calculate-segwit-transaction-fee-in-bytes/87276#87276 , but i think might be getting too difficult to understand at first glance.. However,  if you're interested, further explanation of the weight units and vbytes can be found here; https://en.bitcoin.it/wiki/Weight_units ... )
249  Other / Meta / Re: Suggestion to change the obsolete social media from account info on: January 17, 2020, 12:14:58 PM
I think it would be useful to restrict the link in the Website entry to a site owned and run by the member including the link.

But how would you enforce that? And besides, I like using it for other stuff. People also often use them as part of their sig campaign or to put a ref link in there or something. I think the only links I would possibly restrict was in the feedback section and links to bitcointalk threads only should be accepted as I've seen a few users use them maliciously and spam advertise or link to things they shouldn't be there.
You could make some sort of verification system using Keybase in combination with https://keybase.io/docs/proof_integration_guide (Set a DNS on your domain)

(( Implementing something like keybase instead of the forums standard PM system might also be a really big improvement... eg. link your Bitcointalk account with your keybase account and people can, instead of Pming you over the forum (insecure!), PM you over your keybase account. (Just a button that'd open keybase with your linked username i guess, and people can cryptographically verify on Keybase that that account is actually linked to your bitcointalk account.) ))


As of right now though; I don't think it works with bitcointalk, which is really a shame.
(I haven't looked into how hard it would be for bitcointalk to add such integration, but i think it'd be really cool to verify your bitcointalk account with your keybase account, and vice versa.)
250  Bitcoin / Bitcoin Technical Support / Re: potential Multicast DNS vulnerability. on: January 16, 2020, 03:36:39 PM
We suspect the device may have been misconfigured by you, someone in your household or without your knowledge. If the settings are left unchanged they can be exploited to unwittingly participate in malicious activities, for example a Distributed Denial of Service (DDoS) attack.
I'm not sure if this is 100% the case here; but often when people do things such as running nodes on their home network (and especially anything to do with tor/ other "nefarious" traffic)- these are send out in "error" -

 they simply see a huge influx of traffic going through your network, due to the node you have running over tor, and because it's running over tor, it's often seen by the internet provider as "malicious" traffic. Hence, they ask you to close your ports, and check your firewall, as is mentioned here; https://www.virginmedia.com/help/multicast-dns-vulnerability-alert

You could try to do so (and by that i mean fixing the multicast "vulnerability") but i'm afraid you'll break your node in the process of doing so. (As running your node is most likely what sent out the warning in the first place; but; as i said; i'm not 100% sure.)

251  Economy / Service Announcements / Re: 💠 [ANN] SmartMixer.io | Crypto Mixer | Be Smart, Be Anonymous ❗❗✅ on: January 14, 2020, 06:23:50 PM
Can please someone explain me how to buy something online using smartmixer? In their homepage they say it is possible but what do I need to do? And how is it anonymous by using smart mixer?
1. It's not anonymous depending on what you're planning to buy.

Quote
Can please someone explain me how to buy something online using smartmixer? In their homepage they say it is possible but what do I need to do?
Unless i'm missing something obvious here; smartmixer is like any other mixer; you send your coins, you receive different inputs back which are in no way (except due to the mixer of course) related to your initial inputs (coins!), then you spend them like you would do with any regular bitcoin transaction, you go to the webshop, check out with bitcoin, copy paste the adress + the amount, and send.
252  Economy / Service Discussion / Re: Bitmex - Unrealised vs. Realised Profits on: January 10, 2020, 04:10:01 PM

Is it your first trade?

If not, have you made losses while trading in the same account before?

It is not my first trade and I made losses on trades before, but this should not effect my current position i think  Huh

I closed the possition now (but I missed to make a screenshot) and even when my realised profits where negative I made some profits because my unrealised profits was higher then my realised profits. It is still confusing because I dont now how to calculate it correctly.

Can I calculate my unrealised profits minus my realised profits to see how much the profit will be? How do you calculate it?
Well, yeah. The unrealized profits v realized profits really is equal to the following: (That is; if you're trading with all your account balance.)

The balance of your current position vs the balance of your original starting position.
Otherwise:

Realized : the money you made, or lost from positions already closed.
Unrealized : the money you made, or lost from positions that are still open, and subject to change.


Quote
Can I calculate my unrealised profits minus my realised profits to see how much the profit will be? How do you calculate it?
Current account balance - Original Account balance  = unrealized profits (or losses).

Quote
And why the realised profits turn in positive profits sometimes?

I read about it on Bitmex but its still confusing, I thing there should be a easy understandable way to figure that out  Huh


Thank you for your answers! Smiley
I'm not sure. Are you trading future contracts, such as XBTH20 (Those which expire...),  or are you trading perpetual contracts, (those which don't expire?)
If it's the latter, and you're trading perpetual contracts, you will have to pay a daily fee (depending on whether the market is in disbalance or balance towards your position of course; meaning that if there are more shorts than longs, only the shorts pay fee. (Although this is not exactly true, just a simplified version.))

You can read more about how that fee is determined  ( and adjusted every 8 hours. ).
In bull markets, that fee can become quite a lot real fast. that is - ofcourse - if you are long on your position. - if short, you will receive the fee.

https://www.bitmex.com/app/perpetualContractsGuide#Funding




The unrealized PNL (Profit and Loss) is based on the difference between the average entry price and the mark price.

The realized PNL is based on the difference between the average entry price and the Exit Price.
So, for each individual trade you can calculate your profits from realized trades or unrealized trades by calculating the entry point of your position, minus the exit, times the size of your position.

Which would be :

Buying:

    Unrealized PNL  = Contracts * Multiplier * (1 / Entry Price - 1 / Mark price)
    Realized PNL  = Contracts * Multiplier * (1 / Entry Price - 1 / Exit Price)

   Position: Long
    Entry price (average): 10,000 USD / BTC
    Contracts: 10,000
    Multiplier: 1 contract = 1 USD

    When the mark price rises to 11,000 USD
        Unrealized PNL = Contracts * Multiplier * (1 / Entry Price - 1 / Mark price)
        Unrealized PNL = 10,000 * (1 / 10,000 - 1 / 11,000) ≈ 0.0909 BTC
    When the user successfully closed long position at 12,000 USD
        Realized PNL  = Contracts * Multiplier * (1 / Entry Price - 1 / Exit Price)
        Realized PNL = 10,000 * (1 / 10,000 - 1 / 12,000) ≈ 0.1667 BTC
253  Economy / Services / Re: Buy products from Amazon.com with an 8% discount. PAY WITH BITCOIN on: January 05, 2020, 03:35:25 PM
Just out of curiosity and as a potential customer:
* Where does the discount come from i.e. how is it profitable for you to make these deals?
* Are you using stolen cards to make the purchases?
* Also, are you willing to use escrow for the first purchases to build up trust?
* Finally who made these purchases that you are posting? Can you give the usernames of the people as a proof?

* I am sure he isn't going to answer all your questions because of trade secret protection. but i can assure you it is feasible because the discount comes from him using a gift card which he/she purchases at a much cheaper rate. this is the best i can tell you because i do this myself... though i don't offer the service but i made all my Amazon.com purchases at a much lower rate using this style. i am not saying he/she is genuine, just trying to tell you what i know and i do. cheers.


And how do you think most people get these giftcards at such a discount? Right. Through carding/scamming.

I wouldn't order at all from OP unless he clearly explains how he can offer an arbitrary 8% discount on every product. That seems too good to be true, especially on high volume goods (electronics etc)

Or are you simply using something like purse, and essentially dropship their service? (But; if so; you could never 100% garantuee the product would arrive.. It would be a hassle anyway with all the carded giftcards on those platforms..)

Also, why exactly do you post random shipping confirmation logs? What's that supposed to prove?
254  Economy / Reputation / Re: Have you seen Yobit's new signature design? on: January 03, 2020, 04:10:59 PM
You should understand one thing,
Ok... I will try to understand "one thing".

Quote
no matter whether it has blockchain or not, we cannot interfere.
Huh? If something is so obviously a scam, why wouldn't we be able to point it out?
Quote
The only thing we know here, is the difference in the way they advertise, no one will argue anything if it doesn't include the words "earn 10% daily".
Huh If this coin has no blockchain, and has the same magic words as the other IEO's they did (Moon, Uranix etc), they will probably suffer the same fate- that is = 1 sat after pumping & dumping it.

What are you trying to argue here anyway? That if they didn't use the "10% a day" phrase, everything would be alright? That no one would argue anything? I disagree. I don't think the 10% matters much anyway. It certainly isn’t necessarily  the decisive factor for me... The Moon tokens didn't include those phrases either, (look how those turned out) and so they're really not a requirement to call something a scam, and yes, yobit's IEO's are scams.


Quote
I think Etherscan will not intervene deeply in this matter, they just make sure that their ads are valid
They exactly don't, which is the problem.
(Although i would somewhat agree with darkstar, - up to a certain degree it's the user's responsibility, not that of etherscan, to check how "legit" a token is. If the token is as blandly advertised as it is- normally i wouldn't put much blame on the advertising party (etherscan) - but, in this case, anything coming from yobit is a big red flag in my book.)

It's not in their interest to make sure their ads are 101% legit, so as it is not in your interest to understand what exactly you are advertising, for which i'd like to refer you to a thread i made about Yobit earlier this year; here - > Topic: Yobit Scam Accusation megathread. "Normal" modus operandi or shady practices?  
255  Other / Meta / Re: This is how bitcointalk.org looks like on a mobile phone on: January 03, 2020, 01:33:00 PM
Come on don't be such a kiddo thinker, if you have a 20-20 vision this isn't an issue at all, I'm happy sitting in front of my laptop monitor as well browsing the forum. If you can read left to right then top to bottom as well as writing texts across your mobile phone, that is good you are still a typical human being. Don't let the forum adjust for you mate, you should be the one to adjust, no offense  Wink.
I strongly disagree. The forum is barely readable on default zoom on iphone 5/6/8. Having to rezoom on every page load is a pain in the ass, and definitely something that turns users off, or in any case, me.

It would be both beneficial to the forum and me for it to change. Thus, it seems only logical to me to point it out.

You can keep sucking things up your entire life, but then in the end nothing will change, except your 20/20 vision.


Quote
The year isn't the case to discuss because it is that/this year, that doesn't matter. If the new forum software isn't desktop friendly but hasn't launched yet that can be adjusted before it will be ready so that both are user-friendly.
When the development on the new forum began in 2014 and still has barely anything to show for it... I think it's fair to point out we're now in 2020.



You are not using your phone correctly.


Hodl your phone horizontal and the problem solves itself.
I'm not sure if i missed an /s here.
256  Economy / Service Discussion / Re: Why I am temporarily wearing an unpaid, unsolicited Chipmixer signature ad on: January 03, 2020, 12:02:49 PM
Back to Chipmixer, to my knowledge so far no claims have been made with regards to users being (selective) scammed and that is a great thing for reputation sake but would a third party independent external auditor checking things over and giving their verdict be enough to reassure those that are not convinced about its effectiveness for anonymity?
Well, sure, but i think that the point is that that's impossible. Let's suppose an auditor checks Chipmixer's infrastructure- and then gives "the green light"; Chipmixer could, if they wanted to, simply change some of the source code. Any of the current mixers could.

But also, for logging transactions, with mixers being in the current form they are; they wouldn't even need to change any code/have any "malicious code". there would be a multitude of ways to log transactions, and still pass an "audit" at the same time.
Thus, it all comes down to pure trust.
257  Other / Meta / Re: This is how bitcointalk.org looks like on a mobile phone on: January 03, 2020, 11:45:17 AM
Thanks for the advice, but if bitcointalk had a mobile version, we would be able to browse and read well regardless of the direction, that's my point.
We are entering a new year, even a new decade (cardinal decade), this is 2020, mobile browsing has been mainstream for over 5 years now, yet it sucks to read and write on a mobile because the version is still desktop. A shame. A good resolution from an admin to start this new year would be to create a mobile phone version, hope it can be done soon.  Kiss
I wouldn't get your hopes up. The new forum "version" has been in development for (i think) half a decade now. I think it's already done, but just not yet implemented (Huh).

See this section, https://bitcointalk.org/index.php?board=167.0
You can check how the new forum looks here https://www.cryptos-currencies.com/boards, imo; better on mobile, much, much worse on desktop. I'd simply prefer the old layout over the new one, but perhaps that's just someone who can't handle the significant change speaking.
258  Other / Beginners & Help / Re: So how exactly will the halving of bitcoin block reward benefit bitcoin. on: January 02, 2020, 06:55:40 PM
Halving = less money needed to maintain the current pricelevel.

So, in theory, if the inflow of money stays the same- 12.5BTC to keep the price the same after each block-, there's now 6.25BTC less - which would drive up the price -.


I'll try to give an example but i think it'll come out a bit flawed:


There's 100 k worth of x resource on the table. every 10 minutes someone places the equivalent of 12.5 k of that resource on the table. Now, since there is more of that resource- the price someone would offer for a quantity of that resource would go down- unless it keeps a sustained interest- meaning that every 10 minutes, someone is willing to buy (let's say for simplicity) 12.5$ worth of that resource.

Now, let's say that every 10 minutes, only the equivalent of 6.25k is placed on that table, (halvening) but, the interest in that resource is still worth 12.5$ of that resource every 10 minutes. Which means that 6.25$ worth couldn't get it..

What happens? The price goes up, as the resource becomes scarcer.


But- bitcoin isn't a resource, above all, it's a currency. (Although some people see it as "digital gold"), and for currencies, deflation such as the halvening, is usually a bad thing. Instead of spending their coins, people will hoard their coins believing they will be worth more in the near future. What effect that has on the price...; one can only speculate.


259  Economy / Currency exchange / Re: Help me with 0.8btc exchange on: January 02, 2020, 05:41:04 PM
I advice you to use  https://shapeshift.io/
no KYC . lots of  exchange coins possibilities ..Fast and very reliable
They used to. I believe nowadays you need an account (email adress + ip logging) + KYC if you're doing such big amounts as OP, especially when it concerns privacy-based coins such as monero.
thus, it's not really an option anymore for people who mind their privacy.

See https://info.shapeshift.io/blog/2018/09/04/introducing-shapeshift-membership/
260  Economy / Service Discussion / Re: "HCP's ongoing experiment of the Arakne Trading Bot"™ on: January 02, 2020, 05:32:38 PM
How did i just now stumble on this thread? HCP? You did it! You crazy son of a bitch! You actually ran his bot with 0.1BTC...  Shocked Shocked

I understand what you guys are saying... and the "obvious" thing to do at this point is cut and run... but then, the "obvious" thing would have been to NOT put any money into this in the first place! Tongue

Which is kind of the entire point of this little experiment. Hopefully, by having an independent user actually participating and providing "real" data and not blowing smoke about "algorithms", "machine learning" and backtests using ridiculous bankrolls and fancy graphs... everyone will be able to see past the "marketing" and see exactly what this service is and what it is doing.

And now... I'm just kinda morbidly curious as to what is going to happen next... it's a bit like a slow motion trainwreck... I find it fascinating and can't (don't want to?) stop watching!  Cheesy Wink Shocked
Damn.... Really, i applaud you for doing this "service" to the community, but really- anyone should've seen this coming.

CryptoSparkles was an arrogant douchebag from the very beginning with flawed backtests who was writing translations for ICO's (no offense) just months prior to becoming some sort of quantitative analyst.
How he ever got a following really is beyond me.


Moreover, I believe that he is trying to improve his bot, it is beneficial for him, once the bot works effectively, his income will increase certainly many times. But first, think of another reason for him to start this service. You and others are becoming experiments for him, every time the bot fails, you lose money, and he loses nothing. Maybe I'm wrong, but you're spending your money just to experiment for him, and after you, so do many others.   Roll Eyes  Just a sincere opinion of me, hope you do not waste your money, although I know you have your purpose
Well, it's not hard to make money "trading" bitcoin. Just as it's not hard to lose it all. Him making a commision on the winning trades seems like a pretty good business model to me, considering bitcoin either goes up, or down. He indeed never had much to lose.
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