Quote from: iBitcoinHongKong8 on Today at 06:31:04 PM

Quote from: thoughtfan on Today at 05:16:57 PM

Quote from: msin on December 20, 2020, 03:14:37 AM

I'd be interested in the 10btc, although not sure on the premium when thinking about it in terms of fiat. Will probably be hard (and not worth the risk) to sell even a 1btc Cas once BTC hits $100k+. On a side note, what is your recommended method to friends for sweeping the physical coins? Always like to hear about different methods. Thanks

Hi, thanks for your interest and sorry for my late response.
Regarding 'sweeping' or sending, it's something I've done many many times - for myself when they were low value but also more recently for friends.

I would agree with iBHK8 to use something like Ballet for the forked coins, 'airdropped' stuff etc.

However, I would first - cautiously and with very well considered steps beforehand - send your BTC to a hardware wallet address then only aftwerwards to go play with the BCH & small-fry other stuff.

I don't know if it's possible to 'sweep' without exposing the private keys online so the way I have talked people through doing it is with an out-of-the box £200 air-gapped (wifi off from first start-up) laptop with electrum installed on it from USB stick. Then with electrum also on your connected computer, you can set up watch-only wallet on that one, inputting the public key which will enable you, with the wallet able to read the blockchain, to prepare the transaction (the amount (max), the send-to address and the fee). Then you need to export the unsigned transaction and take it (either on USB or by QR code) to the air-gapped machine to import, sign and export again. You can then, with the signed transaction, input it back into the electrum on the connected machine and broadcast.

There are many variations on this theme with various degrees of security. It is essentially the same as safely spending from a paper wallet and you'll find many processes for that - some with illustrations etc. The critical thing is to remember is that until the signed transaction is broadcast and has been confirmed, you don't want there to have been *any way* the private key could be accessed by anyone (or some malware that will help itself to your funds). (Scanning the QR code to an app on your connected phone to sweep your BTC, for instance, can become a race between your legitimate app sending you the funds and malware on your phone sending them to someone else)!

Thanks for your input on how you sweep the BTC then the forks afterwards once the most important BTC is swept and secured first! Can you or anyone else in here let me know their thoughts on that very risk you describe above regarding it's just a race to get your BTC off your phone and onto a HW wallet? I mean let's say I use Ballet or Coinomi what are the actual risks vs doing it the way you described above? I have no doubt your way is likely more secure but for any security experts in here how much more secure would that way be?

PS: Also at this very movement in time I'd have to go with Coinomi for the BTC as they allow you to set the fees and I'd obviously set them higher for the need for speed but even Coinomi's faster fees is much cheaper than Ballets one size/speed fits all unless they have updated this in their software allowing for us the owner of the Ballet cards to select which fees and how much speed we need a sweep done. Because I do feel Ballet would be more secure given the fact it's a more colder of a wallet than Coinomi just being a straight up hot wallet(a great one but still a hot wallet nonetheless). Would love any and all thoughts!

PS: Thanks for video Krogoth....will watch that soon as I want to learn as many ways as possible!
iBHK8

The race against time he refers to is as follows...

If for some reason you have a virus or malware specifically engineered to be able to copy your mnemonic or paper wallet...or ant private key...then they can literally beat you to sweeping your coins before you do. So why take that chance?