Ah I missed that. Problem with this is that Android usually strongly discourages sideloading apps instead of downloading them from the app store. The warning is probably enough to put off those that aren't very tech savvy.

I still don't think storing Bitcoins on a phone is safer than using the non-custodial wallets like CoinBase, etc for newbies at least.

5 @ 0.02BTC

5 @ 0.017BTC

The number of times I've missed one of these..

0.13BTC

Go backup your wallet and reinstall it. The exchange rate module is probably corrupted from the installation.

https://bitcointalk.org/index.php?topic=5291639.0

As with everything, I think they actually advertised the ballet wallet under the collectible section which is fully understandable; most coins needs the creator to be trustable anyways. Noticed that you bought the Real Series, I think the Pro series gives you the liberty to generate a BIP38 key and give it to them which makes it much more secure (considering you have a long password).

If you trust BobbyLee and wants to perhaps gift it to someone then I guess putting around .01BTC shouldn't be that big of an issue. That's the limitation with most collectible anyways.

Indeed. Bitnode used to implement a lottery system which rewards roughly $10 to a few selected winners once a week/month. There were hundreds of nodes and it was still when the blockchain was still fairly small.

Did it really incentivise that many people to create a Bitcoin Node? Not really, the result was fairly consistent and it didn't really increase the nodes substantially. It was paid for fully by them and it was barely enough to cover a month of fees. If it was any more attractive, I bet someone would've found a way to spoof their nodes and trick their crawler. Don't think anyone really cares about incentivising them/wants to fund it after that.

BIP143 (PSBT) has a known vulnerability to trick the user into signing a fraudulent PSBT by having the device constructing an error message. I think most of the HW wallet should've been patched but I'll need somone to confirm this. Other than that, I think generally it's possible to intercept the signing process and that's why HW wallet has a screen for you to check.

They'll need to bruteforce it then. Just use a strong password but if I'm going to buy a new HW wallet, I wouldn't buy one that could potentially be hacked. A Pin/Password is a workaround, not a fix.

Well, its a little fraction of statistics that I've learned.

The distribution of the blocks within a specific period of time follows a Poisson Distribution, which is basically a Binomial Distribution (Fixed probability and a Fixed number of trials) but with Poisson, it assumes an infinite sample. It satisfies a Poisson distribution as each of the attempt is independent of each other and that each occur with a similar probability. As such, with a given hashrate and a constant difficulty, you'll tend to have excessively small block time and excessively fast block time. However, the mean of the Poisson sample is still 10 minutes.

Thus, when you see that there's no block for an extended period of time, chances are it's due to varience. If you're looking at an extended period of extended interval (ie. 20minutes for an entire day), the probability of it being due to the varience and not miners deciding to shift their hashpower away decreases. This is why Bitcoin's difficulty adjustment has to follow a 2 weeks sample, it doesn't have any mechanism that accounts for the varience and just assumes that the varience is eliminated with a very large sampling.


*Disclaimer, I'm not a mathematician nor did I study Poisson extensively, I've only done Binomial mainly for my studies.

There is no accurate way to ascertain the hashrate of the network as there's no data available. When you're looking at the hashrate displayed by the websites, it's usually derived from the block intervals of the blocks and the accuracy of that doesn't usually matter, so keep that in mind.

Epoch simply means the period of time so difficulty epoch is the n-th difficulty period, with n being an integer which signifies the number of difficulty adjustment that has occurred. The other block time, difficult epoch is the avg block interval in the current difficulty period.

The difficulty is adjusted based on the "block interval of the current difficulty epoch" (or the past 2016 block at the point of difficulty adjustment), so it'll be more accurate to refer to that metric as compared to the avg interval of the previous 2016 block.

Having a relatively long block interval over a period of time doesn't mean that the miners have turned off their ASICs, it could just be varience affecting it.

You don't have to wait for a new device, or even buy a new HW wallet for the matter.

Hardware wallets usually follow a specific format to generate the keys for the addresses and you can easily just import them to a desktop wallet and transfer the funds out. It's imperative that this is done ASAP, being resistant to bruteforce attacks doesn't mean it is 100% resistant to side channel attacks as well; some HW wallets have a vulnerability that affects the secure chip.

I think it's important to explain the terminology of taking up less space.

To ensure backwards compatibility, segwit takes the signature of the transaction out of the equation. For those who aren't upgraded, they won't be put on a different fork since the same block is still valid albeit without the signature. The transaction size is NOT necessarily smaller, if at all. vByte or weight unit is just a concept to count the amount of space a transaction will take up with a theoractical block limit of 4,000,000 weight units.

You probably only need the private key, everything else can be derived from that.


Either will work. Bitcoin Core isn't super resource intensive unless you want to synchronize it.
As long as your wallet.dat is backed up, you won't lose your coins. Make sure you know the passphrase as well.

Yes it is.

I think he's referring to the case where someone leaked Ledger's database with the customer's information.

Let's stop with the name-calling and the arguments on the terminology shall we? Hardware wallets are synonymous with the devices specifically used to store Bitcoin priv keys securely so I guess it's reasonable to be more careful with the naming. I don't think the disputes on this would be solved through this anyways.  Appreciate that OP did put a disclaimer at the bottom of the topic.

IMO, it can be considered a HW wallet in a sense since it does provide some level of security against specific attacks and it is specially built for the purpose of storing Bitcoins but other than the risk of side channel attacks and the obvious limitations of DIY, I think it's still fairly safe for newbies to use. They should have some level of competency with Bitcoin if they're planning to embark on such a project. It's a pretty neat project, love to have a closer look at that though, will have to do so when I have some free time next week or so.

Yes. You can extract the keys out of the client, caveat being that you'll have to be sure of the addresses that contains the coins.

Firstly, go make sure you get a backup of your wallet.dat and keep it safe, do not share with anyone.

Download the latest version of Bitcoin Core (optional and it should work with older versions as well), install it and run the client. If you're sure of the addresses that contains the coins, then follow the steps below:
1. Go to Window>Console.
2. Key in the command if you have password protected your wallet.dat. Otherwise, go to step 3.
3. Key in the following, replace the address accordingly:
4. You should get a WIF private key, keep it safe first and export all the necessary addresses.

Download Electrum, validate it using PGP and it's signature and you can create a wallet to import the addresses.

If they're asking you to install their app to earn any rewards, there has to be a catch for them. Money doesn't grow on trees, however trustworthy the company is, they're not a charity.

Problem seems to be with your Bitcoin Core. Have you checked the daemon whether it's able to be synchronized? Your disk space seems to be quite low too. Might be something blocking your Core from being able to be synchronized.

Lemme kickstart this

5 @ 0.015

Coinbase and any other exchanges are probably not evil and don't want to prohibit you from trading unless they have to. What do they stand to gain and losing out on the fees by doing so? The main factor here involves the government since most of them are supposed to be compliant with the local laws and that they have to err on the side of caution for many of the accounts; I've seen Coinbase accounts being banned for it's linked to tainted coins and Binance accounts getting blocked for using CoinJoin.

Honestly, I don't trust most of the exchanges with my coins and would rather use P2P platforms but in your case, it certainly isn't possible The only applicable advice for you is to use exchanges which aren't known to block accounts and sell it there. I don't get why would you continue to use Coinbase, they're really good at going down during price peaks 

Lot #2: 0.009BTC