Bootloader cannot be updated or modified after production. The bootloader was updated in June last year and for what it's worth, my ColdCard from Nov 2020 has ATECC608A so I believe they only changed the secure element recently. Bummer.

Anyways, I believe that they're aware of this issue. Unless you're trying to do something other than changing the firmware, I think this would be unfixable. I'm not too sure about their responsible disclosure policy but I would probably believe that a statement from them would've been released in tandem if they knew that it would have been disclosed.

Transaction fees will be the only income source for the miners with block rewards eliminated from the equation. This ensures that the miners will still be compensated to some extent even when there is no block rewards. In addition, the difficulty will adjust to an equilibrium such that certain groups of people will still be able to profit from it.

I don't think pools would be eliminated by then; the purpose of a pool is to reduce the varience when mining and when the profit margin gets slimmer, it is to the miner's advantage to keep their earnings consistent. Though I'd imagine that a large part of the miners would start to lottery mine and try to mine a block themselves just like what some people with moderately obsolete hardware are doing.

The actually number is probably much lower. Counting lost Bitcoins without any evidence that they're lost other than the fact that it hasn't been moved for a long time is not accurate.

The only Bitcoins that are truly lost are those sent to provable burn addresses or those which were lost by miners or through OP_return. It is fair to assume that the bulk of Bitcoins mined in 2009 would probably not be moved unless Satoshis resurfaces.

No, language packs that can be downloaded when compiling. Servers already knows your IP but Electrum will not transmit any details that sensitive like your location.

It'll be 0.00049BTC per Kilobytes or 49000 Satoshis per Kilobytes. The units displayed in mempool.space is in terms of bytes and the conversion is multiplying the value by 10^3.
Can be done through the UI. You don't have to delete the blocks manually, can be dangerous if you're unsure what you're deleting.

I wouldn't want to mess with Bitcoin codes if that is the case though I'm sure that they've only modified that part and didn't cause any issues otherwise.

I've found this awhile back: https://bitcointalk.org/index.php?topic=5322315.msg56584362#msg56584362. I didn't test his code but it makes the field optional. My solution for my own fork was to just remove it completely but the modification as referenced would work fine as well.

Thanks for using the correct format.

I don't recommend anyone trying to export and trying to download another program just to transfer Bitcoins. What you're doing right now would probably be the best for you without the need for additional complexity from exporting your keys and downloading a lightweight client.

No.

However, you won't be able to see the transactions after the date that you've synchronized, if any. Since I presume that you're able to see the transaction on the blockexplorer, I assume that you've already made a valid transaction. That leaves the only problem if any funds present in your addresses after that point cannot be seen. Since you're unable to see the floating fees recommended by Bitcoin Core, I'll advise you to take a look at https://mempool.space/ and see the recommended fees. 1sat/vbyte = 0.00001BTC/vMB; that is the unit used in Bitcoin Core.
Yes. You can just change the pruning settings in your preferences.

Move your data directory to your desired location, right click on your Bitcoin Core shortcut and edit the target accordingly:


After opening Bitcoin Core, it will ask you to specify the new directory. Specify and go back to your shortcut and delete the -choosedatadir that you've added.

What you've described is called a known plaintext attack.

By looking at BIP38's specifications[1], BIP38 uses Scrypt as a PBKDF and that by itself can't be reversed as of now. AES256 has quite a large keyspace so trying to get the correct Scrypt key would be close to impossible and even if you get it, you'll have to either find a vulnerability within Scrypt or to bruteforce it. Given the circumstances, I don't think either is currently practical.

[1] https://github.com/bitcoin/bips/blob/master/bip-0038.mediawiki#Encryption_when_EC_multiply_flag_is_not_used

Yes. As GBT expects coinbase aux, you can just include it as an empty field again. It'll be easier to ensure minimal downtime as you won't have to waste your time to manage each of your mining instances. Alternatively, remove it from your mining client so it doesn't throw an error.

The reason that it is labelled as such in the RPC is for the user to be aware that any remaining amount after deducting both the sending amount as well as the fees would be sent to the address as specified. I'm not sure why you would want to import a change address, it doesn't do anything anyways?

I don't think it really matters if the address is imported or not. The reason for us to be importing the address as such is to be able to retrieve its UTXOs but there isn't anything to be done for a change address.

Yes. Requests is not a mandatory module to be installed. It's only required to get locale and an older version should work fine as well.

Electrum doesn't have to be installed. You're only installing the utility required to upgrade the package and also upgrade the package itself. But as I said, it'll be fine without upgrading as well.

Yeah it will. If you prefer to not install anything, then this is probably the way to go.

You might've misunderstood the entire topic.

The hit with the bounty in Bitcoins was referenced in the show. If this doesn't sound illegal to you, then I'm not sure what jurisdiction you live in. It is fictitious so no government or law enforcement would come after them. I don't expect them to have any impact, no one other than Bitcoiners would care that they referenced Bitcoin in their shows. After all, who doesn't know that Bitcoin exist?

Nothing new, tons of other shows has featured this. Mr Robot for example. It is almost always being used with illegal transactions which doesn't give it a good portrayal.

Not saying that it isn't good; bad publicity is still publicity but I would very much like for it to be portrayed positively instead .

You meant giving the choice to the user to install the app themselves if they want to?

Yeah, you can already do so through your app store. There is no such thing as default Bitcoin wallets; making people use a certain app goes against the ethos of Bitcoin.

No one likes bloatware. This is a terrible idea and I'm not sure if it is even allowed on most mobile service providers.

People won't use Bitcoin unless there is a reason to and most commonly, it would be some incentives from using it which most companies won't have. Forcing Bitcoin on people doesn't bode well for its image nor increase the adoption by any significant amount.

Rather than focusing on getting a paper wallet, try getting an airgapped wallet instead. Paper wallets are not very secure in the sense that it is only a backup method. The main thing that you should be focusing on is the generation and the spending part.

I'll probably just recommend you to search for guides to make an airgapped wallet. You can do so by using a LiveUSB with an OS distribution and just install and generate your wallet completely offline. You can also spend it offline by signing the transaction on that offline device and thus ensuring that the private keys and the seeds are never exposed.

Probably possible. But would be adding much more load on the existing servers.

OP said Pre-Segwit but yep you're right.

Seed phrase extension is available with BIP39.

MyCelium has BIP44(?) derivation path so unless you're using a wallet with the same derivation path, you can't find it.

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If you're willing to give up your privacy: https://blockpath.com/wallets/local/101?action=appxpub.

I don't trust anything that requires the user to go online to generate any addresses. As the browser has to load the script from the website, it'll mean that it is totally possible that the site owner can insert a backdoor or any MITM attacks can happen as well. Browsers are not specifically designed to generate addresses anyways, I would rather just download a desktop wallet and do so myself.

However, if you want to see the script for bitaddress, go here[1]. During the generation, it calls for the CSPRNG function within the browser and salts the entropy with mouse movement as well as other random variables.

[1] https://github.com/pointbiz/bitaddress.org