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201  Economy / Exchanges / Re: 2020 Crypto debit cards situation on: February 13, 2020, 06:59:03 PM

They've already given away 45 millions of these tokens to their users, giving away some more won't make a difference. Maybe coinbase and wirex are better options, but I don't trust any exchange, especially when they use the magic word "guaranteed". Op asked for alternatives and this is one.
I see where you're coming from. I'm just saying that Wirex and Coinbase have legal barriers in place from preventing their creditors to access customer balances in case of insolvency. I'm just wondering if that is also the case for CoinDeal, - if not - i'd be wary of using them.

I forgot the name of the company, but there was a KYC-free company that also gave out VISA cards, and when the card provider, (or vice versa, i don't remember exactly) went bust, - a lot of other smaller companies relying on them (the card provider) held users funds/ stopped operating.
202  Economy / Exchanges / Re: 2020 Crypto debit cards situation on: February 13, 2020, 04:42:54 PM
CoinDeal exchange just launched their own crypto debit card (they are giving away 50k of them - 49k left, you can clearly see that still, not many has interest in it and neither do i)
And yet you do shill their card in every post you make... Come on now.

Quote
and similiar to Coinbase one - it's also Visa. It's a nice exchange, they are from EU, i've been using it for couple months already. I follow their thread on the biggest polish crypto forum, where they've said that you can pay anywhere with this card, using paypass, having only crypto on your balance. Coinbase's fees are known to be high in general so maybe coindeal's card is cheaper.

I see they're just using these cards to prop up a shit token. That's not something i'd be interested in if i were to use it for various purchases. I'd want something that is regulated and trustworthy.

What if coindeal goes bankrupt or their provider does? Are they collateralized?
In case of insolvency- do they have a structure where customer's funds are guaranteed? Coinbase and Wirex both have this.

203  Economy / Service Discussion / Re: How to buy bitcoin with PayPal in 2020 [NEW] on: February 12, 2020, 08:17:22 PM
Sellers (long term suppliers who are looking to build trust) are probably the ones who are going to have a hard time with this. As for the buyers, I'm pretty sure they would just abuse the system and make multiple accounts each time they reach the limit since all it takes to make an account is a phone number (Of course, that's not recommended unless you want to lose your funds).
On a bit of an unrelated note: I've delved a bit deeper into the whole exchanging Bitcoin to Paypal business model, and i really wonder how sellers who trade in big volumes (10k+) do so legally speaking.


Googling: It seems to be against Paypal's TOS to make currency swaps, see


Quote from: 2017
On May 10, 2017, I received an email from PayPal stating that the selling of Bitcoin means I was operating as a currency exchange (which includes electronic media/money/currency), which is against the Acceptable Use Policy.  Quote "Per our current Acceptable Use Policy for Money Service Businesses, PayPal may not be used to operate a currency exchange, bureau de change or check cashing business including the sale of bitcoin."
https://www.paypal-community.com/t5/About-Settings/Selling-Bitcoin-is-Against-PayPal-Policy/td-p/1215793

Now this was from 2017, and when i now scroll through their Acceptable Use User Agreement, it states the following in a one-liner.

Quote
(h) involve currency exchanges or cheque cashing businesses,
https://archive.is/7lORV#selection-117.657-117.718

How do these paxful traders with 1000+ trades circumvent these rules?
204  Bitcoin / Bitcoin Technical Support / Re: How to view derivation path in Bitcoin Core on: February 12, 2020, 06:24:30 PM
@BitCryptex thanks for the tip, but unfortunately the wallet is still syncing with the network and is around 4 years behind  which means that I have to wait for a while before i can do any transactions, that's why i was trying to recover my wallet with the seeds which they had provided but the only problem is the derivation path, I have been searching for past 3 Days and now i guess i have found a way to get my private keys through my 18 words seeds using https://github.com/iancoleman/bip39/releases, but i am not getting the correct derivation path, so do you have any idea how can i find the derivation path in the console? as the software is 90% copy of original bitcoin wallet    

18 words? Where are you getting 18 words from?
Sounds to me like we're missing a key piece of your story.

Quote
that's why i was trying to recover my wallet with the seeds which they had provided but the only problem is the derivation path
Which wallet are we talking about here? Bitcoin core does not provide any sort of of mnemonics.

Could you walk us through it again. You bought bitcoins somewhere- then sent them to the wallet you downloaded from bitblocks.io (which is probably a scam?), and now you want to access your bitcoins? Is that close?

I think all bitcoin core derivation paths are
Code:
 m/0'/0'/i'

And then the according address type, no?

Not that that'll matter much, as i doubt that the problem here is with the derivation paths, but rather that you downloaded a wallet which is a scam.
205  Economy / Web Wallets / Re: Blockchain.com ID format question on: February 11, 2020, 06:20:46 PM
Is there a way to determinate how a blockchain.com wallet ID is generated or check if its valid?

Are there any info to learn more?
I believe that any GUID with a length of 36 characters that follows the format posted above me is theoretically a valid guid.
(Note: I believe it's a-f, 0-9)

But, not every GUID (obviously) belongs to a wallet, if that is what you mean by valid.

I haven't looked into the api, but if you go to https://login.blockchain.com/#/login

You can see if a wallet ID (guid) is being used by copy pasting it. If it asks you for a password/invalid password, there is a wallet associated with the GUID.

If it doesn't ask for anything, or give any errors, but simply refreshes or similar, there is no wallet file associated with that GUID.

15506a26-fa63-4158-a898-63e6f81aaf9f for example has a wallet file, where as 15506a26-fa63-4158-a898-63e6f81aaf9e does not.

With 32 characters it probably is  infeasible and (in the end useless ) to try and bruteforce possible wallet id's.

(6 + 10) ^ 32 (?) combinations.
206  Economy / Service Announcements / Re: 💠 [ANN] SmartMixer.io | Crypto Mixer | Be Smart, Be Anonymous ❗❗✅ on: February 07, 2020, 06:48:43 PM
I've observed the SmartMixer.io website for a couple minutes now, and something strange is happening.

These "mixing" alerts don't pop up at the same time, or anywhere near the same time.



In three different browsers i observed the notifications. They were all different.

I came to the conclusion that they were either fake, or either only sending out notifications of the most recent transaction x seconds.

I unplugged my internet to make sure... and... They kept coming. I figured they were generated client-side.

And.... they are..

Wow... Explain this...

Code:
  const getRandomInt = (min,max)=>{
            min = Math.ceil(min);
            max = Math.floor(max);
            return Math.floor(Math.random() * (max - min)) + min;
        }
        ;
        const socialProof = $(".fixed-social-proof");
        const socialProofCurrency = $(".fixed-social-proof .currency");
        const socialProofPool = $(".fixed-social-proof .pool");
        const socialProofCloseIcon = $(".fixed-social-proof .close-icon");
        let socialProofTimeOut;
        function showSocialProof(currencyVal, poolVal, hideAfter=6000) {
            socialProofCurrency.text(currencyVal);
            socialProofPool.text(poolVal);
            socialProof.removeClass("fadeOutLeft").addClass("fadeInLeft");
            socialProofTimeOut && clearTimeout(socialProofTimeOut);
            socialProofTimeOut = setTimeout(()=>{
                socialProof.removeClass("fadeInLeft").addClass("fadeOutLeft");
            }
            , hideAfter);
        }
        socialProofCloseIcon.on("click", ()=>{
            socialProofTimeOut && clearTimeout(socialProofTimeOut);
            socialProof.removeClass("fadeInLeft").addClass("fadeOutLeft");
        }
        );
        (function loop() {
            const rand = getRandomInt(30000, 50000);
            const poolRandom = getRandomInt(1, 4);
            let poolName = "Standard Pool";
            if (poolRandom === 2) {
                poolName = "Smart Pool";
            }
            if (poolRandom >= 3) {
                poolName = "Stealth Pool";
            }
            let currency = "Bitcoin";
            let currencyRandom = getRandomInt(1, 5);
            if (currencyRandom === 1) {
                currency = "Litecoin";
            }
            if (currencyRandom === 2) {
                currency = "Bitcoin Cash";
            }
            setTimeout(function() {
                showSocialProof(currency, poolName, 4000);
                loop();
            }, rand);
        }
        )();
    });
}
https://www.smartmixer.io/bundles/frontend/assets/js/main.js?v=1581085334

Why would you do this?
207  Economy / Service Discussion / Re: Hackers and their use of mixing services on: February 06, 2020, 04:54:46 PM
Legitimate uses of these kind of mixers were stopped long ago. In the early 2014 to 2015 these kind of mixing services were been used to keep the money anonymous and out of reach of hackers or scammers but after that time, mostly the hackers and scammers are the ones who use mixing services. These kind of services might perhaps not be needed anymore because we people earning from legitimate source should never worry about the origin and destination of our funds.

We should always be confident about our funds. It should not be us who are motivating the use of mixing services. Sometimes I even think why are these kind of mixers even needed if they support blacklisted people who have intentions to scam or hack and nothing more. These kind of mixing services are giving boost to such people.
Again such a stupid post based on nothing but your “experience”.
 If you had just looked at my previous post it would have been obvious that there is at least the possibility *some* users of mixers are in fact not immoral/criminals.

I’m dumbfounded by your arguments against mixers.
Quote
Perhaps not be needed anymore because we people earning from legitimate source should never worry about the origin and destination of our funds.

We should always be confident about our funds. It should not be us who are motivating the use of mixing services.
Do you have any clue what bitcoin is about?
208  Economy / Service Discussion / Re: Hackers and their use of mixing services on: February 06, 2020, 03:49:30 PM
Personally I appreciate why smart bitmixer's owner was, this person is great. He created the most amazing mixer and also he closed it himself. To make it more clear, only in 2015 year bitmixer was roughly mixing up to 60K-70K coins monthly (they launched service in 2014 year). Then in 2016, bitmixer owner stated himself that their website mixed 1 million coin. So what do you think, how many people were using it for just protecting their privacy during online shopping? I think maybe some percent only, max 4-5%. See how many websites were seized and how many still aren't and how many things are done without websites via different messengers.
Nowadays mixers aren't used for good purposes, it may was in 2014-2015 year just for the interest of mixer.
Currently mixers are been used by maximum community who have scammed someone and now want their bitcoins to get mixed up so that it might never be possible for anyone to catch them. Also most wider use of mixers are been done on the deep web or dark web where almost each of the site used a bitcoin mixer in order to mix their transactions. That is where the maximum illegal funds gets rolled into bitcoins and also spoil the reputation of bitcoin.

Mixers give boost to such illegal platforms and hence there are a lot of mixers which were been forcefully shutdown by the legal authorities. Bitcoins are naturally anonymous which makes tracking the transactions a bit difficult(but not impossible) and these kind of mixing services literally make tracking the transactions almost impossible.

There are so many things wrong with what you're saying that i don't know where to start.

Yes, bitcoin mixers are used by criminals, but by far the most people using them are simply privacy-oriented persons, https://bitcoinmagazine.com/articles/chainalysis-most-mixed-bitcoin-not-used-for-illicit-purposes

There have only been 2? 3? mixers that were shut down, the others either exit scammed or closed down themselves.

Quote
Bitcoins are naturally anonymous which makes tracking the transactions a bit difficult(but not impossible) and these kind of mixing services literally make tracking the transactions almost impossible.
They are quite literally the opposite of anonymous. Every bitcoin leaves a clear "trace" which can be chained to a person on each and every offramp (exchange).
209  Economy / Scam Accusations / Re: SSH Wallet Scam? on: February 05, 2020, 06:58:43 PM
I don't think you understood the OP. I'm just wondering if this is a common thing or not. I'm not questioning whether or not to "use the wallet". Many people scrape Pastebin for user/passwords that may be accidentally posted. I saw this get posted and was surprised when the user/pass actually worked and claimed to be a BTC wallet. I've never seen this SSH wallet scam before and couldn't find anything on the web about it which is why I posted it.

Yes, this is extremely common, and the oldest trick in the book. Make people think they have somehow lucked or won money, and then ask them for a fee before they can withdraw it.

You see it everywhere, Bitcoins, virtual items (think csgo, other ecash stuff), usually this is done through something like you posted, where the user thinks he has "stumbled" or "lucked" on a large sum of money, while in reality, it was infact all planted and or rigged.

You just stumbled upon a slight variation of this scam where they planted an SSH combo to a server that supposedly "hosts" a bitcoin wallet with 2.7BTC, but of course, before you can "withdraw" it, you need to deposit money first.

It's all the same scam.
210  Economy / Service Discussion / Re: Service to short stocks with Bitcoin? on: February 05, 2020, 04:09:27 PM
There are alternatives, but i am really not sure how trustworthy they are.


This one looks most promising to me, but again, i've never used them. I do remember WCX though, and it seems WCX was acquired by this platform?
https://trade8.to/trade/ (Previously WCX?)

Edit: I'm not sure how common it is to pay such decay rates in liquidity pools, for some stocks you pay ~.1% every 8 hours of holding them (the trade that is.)? nor whether or not trade8 offers dividend on their stocks, so you should keep that in mind.



And there's also some forex related sites. I just found this one through a google search -- not sure how trustworthy/good it is, but it seems to have been around for a while. - https://simplefx.com/
211  Economy / Service Announcements / Re: Coinsbee.com - Buy gift cards with about 50 crypto currencies! on: February 05, 2020, 03:39:30 PM
Please write a supportemail with the date you bought your voucher and what email u used.

We try to help you as fast as possible. The number of confirmations is set by our partner coingate.
Normaly it took only some minutes.
Hmm. I'm just saying that it took 4-10 minutes to confirm, and then i had to wait another hour (plus or minus) for both giftcards to actually be sent to me.

Sending a support ticket will probably not be worth the hassle, and i doubt i would get a response in time, but at the same time it's slightly annoying to wait an hour or more (if you're unlucky) when your transaction is already confirmed.

 I'm just saying that, for someone like me who wants to have as little interactions as possible (unnecessarily sending tickets etc..), and receive the GC as soon as possible (i think this is your average customer), this could be kind of a dealbreaker.


Quote
The number of confirmations is set by our partner coingate.
If you think that that's best..

Anyways, great service nonetheless
212  Bitcoin / Bitcoin Technical Support / Re: unfonfirmed transaction on: February 04, 2020, 08:57:36 PM

You might need to hire a miner/request on the pool operator to choose those transactions to include in the blocks they mined.

where can i request a miner ? any recommendations pls

It's kind of hard to directly contact a mining company, but they created some "tools" where you can put in your txid and they'll include it in the next block they mine.

"Transaction accelerators"... I believe there was a pool which also allowed you to enter tx's if you were a member, but that's out of your reach anyway.

If you google "Bitcoin transaction accelerator", you'll find some, which these two being the main ones you should use (if any).

https://pushtx.btc.com/
https://www.viabtc.com/tools/txaccelerator

Note: There are a lot of scam "Accelerators", and it is usually better to just do a RBF or wait for your tx to be dropped from the mempool. Nowadays you can also usually just wait, even with 1/sat p b transactions.

Also, i see your tx has an nsequence of 4294967294, which means it is not signalling for RBF. You should do that next time so you can increase the fee if it turns out to be to low.
(Or start to use a wallet that supports RBF, if you aren't. (Electrum, Core, (samourai?) )

Your tx has been confirmed now?
213  Bitcoin / Development & Technical Discussion / Re: How can you detect a risky transaction before a single confirmation? on: February 04, 2020, 07:16:17 PM
If exchanges publish their addresses, maybe. They don't normally do this except for maybe their cold storage addresses, and usually they only do so if there has been some noise about a particular address because it has a large number of coins in it.
Well, no, Walletexplorer for example just looks at a single adress the exchange/service uses, and then connects the dots together
(All the merging transactions for example. see https://www.walletexplorer.com/info).

No need for an exchange to publish their adresses.

And i can only imagine services such as Chainanalysis do this squared,  with much, much more detailed data.
214  Economy / Service Announcements / Re: Coinsbee.com - Buy gift cards with about 50 crypto currencies! on: February 04, 2020, 05:39:21 PM
Could you maybe lower the amount of confirmations needed before receiving a gift card, or is that not in your control?

6 confirmations for a 20EUR giftcard seems a bit excessive and unnecessary, and would be something that would drive me to your competitors.

No confirmations are required. I've been using the site for a few months now and I never had any delays and I just did another test:

I just bought a 10 GBP VCC. I got an email from Coingate saying that the payment is complete just after sending the payment and shortly after, I got my code from Coinsbee as well.

TXID (Unconfirmed at the time of writing): https://www.blockchain.com/btc/tx/9941b8df97a3708c30cdc9ab5e21ac70351d76507f86459a91b3e1a6e70d2d6b


I'm pretty sure i just waited for 6 confirmations for a 20 euro giftcard last week. Perhaps you do something i don't?

I'll try it out. (https://blockchair.com/bitcoin/transaction/1c5576df3feb42329fcd88d6b175ad4436405cc412adf19b5cbfd7b3aebbd674)




Perhaps it's because I'm using RBF? still, 1 confirmation should suffice.


Update: received my first confirmation. My inbox is still empty and it now says 1/6. https://i.imgur.com/DgvAAbP.png

Looks like we got 5 more confirmations to go.


215  Economy / Service Announcements / Re: Coinsbee.com - Buy gift cards with about 50 crypto currencies! on: February 04, 2020, 03:51:05 PM
Could you maybe lower the amount of confirmations needed before receiving a gift card, or is that not in your control?

6 confirmations for a 20EUR giftcard seems a bit excessive and unnecessary, and would be something that would drive me to your competitors.


Other than that, your service works great! (And it seems i got a better rate than your competitors for the GC i bought, which is nice, i guess.)
216  Economy / Trading Discussion / Re: How can i create a bot for trading bitcoin? on: February 03, 2020, 08:47:23 PM
obs: if anyone here have a bot and want to sell to me i would like to buy. BTC
You might be able to scoop up a GUNBOT ( https://bitcointalk.org/index.php?topic=1715214.0 ) license for a decent price nowadays, the hype around those seems to have died off a bit... (Make sure you buy from a trusted source though!)

Never heard of them before, but this also seems like a popular bot. https://bitcointalk.org/index.php?topic=211979.0 Not sure what features make this one distinctive from gunbot.

Anyway, i'd also like to add that for most users, it is totally unnecessary to use trading bots. Unless you have some unique, or rather, micro-intensive strategy (lot's of trades) or deal in gigantic quantities, you're probably better off doing it by hand yourself.

That's not to mention the use of trading "strategies". I'd avoid that unless you really know what you're doing / have a sound plan (in your head at least that is Tongue), as i'm pretty sure that the majority of the users who blindly traded these strategies using e.g GUNBOT, lost their money. It's really not some magic profit generator, else everyone would be using them/they wouldn't be sold, so be aware of that.

Hello, i´m trading bitcoin since 2018, and i would like to know if anyone here can explained for me: how can i create a bot for trading bitcoin (on bitmex or binance without leverage). So, i want to know what programming languages i need to konw and if someone can help me. (i will pay at this case in btc)
I'm not certain about this, so don't quote me on this, but i'm pretty sure you can also create your own Bitmex strategies with something like Haasbot, w/out having any real programming skills.
217  Bitcoin / Bitcoin Technical Support / Re: Import Dumpfiles on: February 03, 2020, 08:17:09 PM
Two different users... same wallet... same problem. Huh Huh Huh
I actually think it's the same person.

Their linguistics/formatting seem pretty similar. (And of course the path is a pretty decent hint too..?)
Tried:
14:39:37

importwallet "C:\Users\Ingvar\Desktop\WalletsDesktop\DumpedWallets\UsersAdministratorDesktopWalletsDesktopDBitcoinBUwallet.dat"

Res(p)onse:

Importing wallets is disabled when blocks are pruned (code -4)
I tried to import a dumpfile from a local bitcoin instance to another new local  "virgin" instance. Got an error message:

Command:  


importwallet "C:\DumpedWallets\UsersAdministratorDesktopWalletsDesktopDBitcoinBUwallet.dat"


Response:


Importing wallets is disabled when blocks are pruned (code -4)
Ever seen not one, but two people format like that?
218  Bitcoin / Project Development / Re: How can I add 'Bitcoin Payment Gateway' on my website? on: February 03, 2020, 07:09:51 PM
If you only need invoices, i definitely recommend Btcpayserver, but i see that that isn't the case here.


https://bitcoin.stackexchange.com/questions/25763/how-to-receive-payments-online-to-single-address-per-user-in-scalable-way?rq=1
Recommends you to simply use Bitcoin Core and build an api around it yourself. (eg assign adresses to userID's yourself in a database for example.)

https://bitcoin.stackexchange.com/questions/20821/build-an-online-wallet-service-with-bitcoind-can-it-scale-if-not-what-can-be?rq=1
Some more interesting reading material, and maybe check out - https://github.com/bitcoinj/bitcoinj

For a more JS-related library, check out https://github.com/bcoin-org/bcoin || https://bcoin.io/ , looks pretty nice, and promising (Might check them out myself later).

Imagine if your website only does withdrawals once every few hours, or once a day, how much in fees everyone would save.
Or, if you're running a really big site, you can also do the exact opposite of batching. Instead of sending out 100's at the time, you simply collect as much inputs as possible, and when you have a really big UTXO set, you can, when someone requests a withdrawal, try to match it as closely as possible and only have 1 output adress (no change) and thus save heavily on fees.

Again, that only works when heavily scaled.
219  Bitcoin / Bitcoin Discussion / Re: Key generator in hex format on: February 02, 2020, 05:12:17 PM
Something like https://github.com/matja/bitcoin-tool ?

I'm not sure what would be the most efficient library to generate millions of keys in HEX format.
But i guess you could also use https://github.com/bitcoinjs/bitcoinjs-lib (But again, for something more efficient you might want to use a more low-level language..)
220  Bitcoin / Bitcoin Technical Support / Re: Master Public Key, no zpub prefix on: February 01, 2020, 08:24:39 AM
I created multisig wallet recently with segwit generated directly from Electrum and the 2nd consigner is legacy. No error and no issue it's working fine to me and the wallet information shows this below.



So I think he needs to generate segwit first while making multisig wallet then the 2nd consigner must be a legacy wallet.
There might be a bug on using 2 segwit wallets in multisig they don't allow me to put segwit wallet in 2nd consigner that is why I generated the legacy wallet to test if it will work.
No, i think that with segwit there is a difference between P2WPKH mpk and P2WSH, (zpub v Zpub), which is why there’s an error. So yeah just generate 2 segwit P2WSH pubkeys and it works fine. Wheres p2pkh and P2SH are “identical” (xpub?)

https://bitcoin.stackexchange.com/questions/89261/why-does-importmulti-not-support-zpub-and-ypub
Although i still don’t get if that difference is something on a “protocol”(for a lack of better words) level, or just done to more easily recognize the address it’s supposed to generate.

Also, you’re telling me you used a P2WSH mpk (Zpub) with a legacy cosigner? Huh?
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