This statement doesn't make a lot of sense.
SPV has been proposed in the original bitcoin whitepaper. It is simply a mechanism to verify payments without requiring all blocks to be saved.
Thanks to concept of the blocks (especially merkle trees), the header (and missing hashes) are enough to verify that payments (transactions) are included in a block.

I could also claim:
The computer you are using is connecting to the network, so no.. you (as a person) are not actually using bitcoin. You are sending "your" bitcoin through an electronic device.

Obviously this statement would be completely retarded. But there is a small analogy to your statement.

The process depends on the OS you want the executable to be build for.

You can find step-by-step guides on github:

• Linux (tarball) (no reproducible builds yet)
• Linux (AppImage)
• Mac OS X / macOS (no reproducible builds yet)
• Windows
• Android (not reproducible builds yet)

This would be quite a loose security concept.
But i guess the possibility exists.

However, i doubt that coinbase would update the application for OP.

IMO this thread shows two important points:
1) Always have a backup stored securely and
2) Do not rely on biometric security on a smartphone

So, what exactly is the difference in your eyes ?
If a devices goes online, it is not an offline wallet. And also can't be called "offline mode".

What is the difference according to you ?




And that is exactly what an offline wallet is too.
Your definition of a cold wallet now exactly is the definition of an offline wallet.

Ye.. i didn't read it and didn't even click on the link.
But i don't need to do that to tell you that this is absolute garbage.

Bitcoin "encryption" (i guess you meant signatures) won't be crackable the next few years..
Even if (and that already is a big if) there will be well working quantum computers available in a few years... there are no algorithms available.

You need the hardware AND the efficient algorithms.
And once its coming close to be possible, a hardfork is going to solve everything.
The traditional banking sector and the government will be at a higher risk with their slow IT departments than bitcoin.

You don't have any clue about what you are doing online. That's how he got access to your new email address.
Obviously, you didn't learn anything about getting compromised 2 times already.




If you would have done everything (somewhat) correctly, this wouldn't happen.
But you lost your account 3 times already .. so who knows..

They can't help OP, because they don't have any access to the private keys.
It is not their exchange application.




Highly unlikely this will result in recovery.
OP might have a chance using this if 1) his mobile is rooted or 2) the application was installed on an SD card.
If neither is the case, recovering lost data (and especially data purposely deleted by an application) is not that easy feasible.

I actually never heard the terms being used in a different context.
Whenever i heard cold wallet it absolutely meant offline wallet and vice versa.

A Wallet operated offline is an offline wallet and a cold wallet.
There is nothing in between.

Either it is completely offline or it is not.
A wallet which partially is offline, is neither an offline wallet nor a cold wallet.

Whether and how the device has been used prior to serve as an offline/cold wallet doesn't matter for the terminology.
Cold wallet = wallet completely and always offline = offline wallet.

You can remove wallets by simply deleting the wallet file.
But that's not recommended since you might receive more BTC at some point in the future. If you don't need them just move them into a different folder and forget about them.

Regarding addresses, you can't delete them (addresses, private keys) since it is a HD wallet (all derived from the same seed).
Is there a practical reason you want to delete them? 

If we are talking at that level, you also have to consider that it IS possible to infiltrate an completely air-gapped system.
Regardless of whether it ever has been online or not.

And additionally, the hardware supply chain can be a huge problem.
There are multiple points in the supply chain where your hardware can be manipulated (your hardware wallet or motherboard, CPU, etc..):
Chip design, preperation of the masks, IC test and packaging, PC assembly, vendor, distributor and anywhere in between.


With these considerations, you should keep in mind that every system always can be compromised.
You will never reach absolute security. All you can do is to minimize the risk.

If you plan on storing a few millions worth of BTC and are telling everyone you own that much.. yes. Maybe use a brand new PC to be a little more on the safe side.
If that is not the case, you practically don't gain much.

Ja.

Man trifft sich an einem sicheren öffentlichen Ort.
Das Geld wird übergeben und die BTC werden transferiert.
Dann wird noch ein Kaffee getrunken bis die 1-6 Bestätigungen (was eben abgemacht wurde) da sind.

Then maybe tell us the name of the app ?

This all depends on which kind of wallet you are using.
And if you don't see any name when opening the app, just give us the name of the application (preferably with a link to the play store).

Thanks for the heads up. I missed a "5".




You guys are obsessed with storage space 

A 500 GB HDD costs ~25$.
Whether a pruned nodes needs 2 or 20 GB is pretty much irrelevant (IMO).

If someone is doing 2 requests per second, thats more than 7k requuests per hour. I would guess that he should be able to run a full node and give up on 2-20 GB on storage space in this case.

Dann spiel dein Spiel deinen Scam und mach keine Werbung dafür.
Da du deine Meinung diesbezüglich geäußert hast, habe ich meine Meinung (auf deiner Trust seite) auch mal geäußert.

Wenn du wirklich meinst hier Idioten zu finden, die sich das Geld aus der Tasche ziehen lassen (so wie du), dann liegst du ja mal richtig daneben.

Seite 12 ff. zusammenfassung:

• Es wurden 100 Milliarden UPX tokens aus dem Nichts erstellt
• 1.000 UPX tokens wird der Wert 1$ zugeschrieben

Des weiteren:

• Man zahlt Geld für Tokens ein
• Es kann kein Geld ausgezahlt werden

Ok, es wurde also einfach so mal 100.000.000 $ erstellt.

Ich kann mir echt nicht vorstellen, dass du wirklich glaubst, dass es sich hierbei nicht um einen scam handelt.
Sowas gibts hier schon seit Jahren. Ständig das gleiche mit neuem Namen und anderen Zahlen.


Ich würde dir raten, das als riskant und just 4 fun und ausschließlich als "Spiel" zu kennzeichnen.
Mit Investment hat as nichts zu tun. Und Verdienen tut man da nichts dran.

Sonst kann das ganz schnell als Promotion von Scam angesehen werden.

In this case, try here: https://login.blockchain.com/wallet/recover-wallet.

Oh and, please stop giving out more words from your mnemonic code.
You already posted 7 out of 20 words.

This isn't enough to bruteforce it, but be careful. And don't reply to PM's asking for information.

If it is a BIP39 mnemonic code, the number of words has to be divisible by 4 3.
However, the word "interruptions" is not part of it.

Do you remember using your own wordlist (i.e. replacing the wordlist by another one yourself) ?
Do you remember which kind of wallet you were using ? Did you use a browser? Your mobile?
Anything you remember?

So.. why did you use changelly in the first place ?
How and why did you believe it is safe to use such an "instant exchange" ?

I am sorry, but no one here can help you.
Their support is the only one being able to help you. But since they are lying all the time (e.g. about their location), if they don't want to help you, you can't expect anything from them.

For the future, google first before using any service (especially something shady like an instant exchange).

If you need at least 2 requests per second, you might want to consider setting up your own node.
It's not that hard and doesn't need too much disk space, since you can simply enable pruning and only save the last few blocks (e.g. 50 MB of blocks).

I don't know what of software/service you are building, but it might be better to not rely on a 3rd party (keyword: availability).

Wait, what ?

Regardless of the irrelevance to the OP, this statement doesn't make any sense.
You are using your desktop wallet to pay stuff, ok. But how are you funding your desktop wallet with your hardware wallet ?
I'd assume that you are using your PC ?
It doesn't matter whether you send a transaction to someone else, or to your other wallet.

The only real advantage in security would be, if you'd only use an offline PC to sign transactions with your hardware wallet and then move it to an online PC to actually broadcast it.
I mean.. that's possible and adds another level of protection, but.. if you aren't transaction huge sums of money this seems like an overkill to me.