Quote from: BitCryptex on April 24, 2020, 10:39:58 PM

Quote from: scott.carter.2020 on April 24, 2020, 10:15:06 PM

- Why payments does fail in general ? and if failed, what shall be done, just re-initiate it ?

When you try to send a payment to a node which is not directly connected to you, your payment is routed through other nodes. Those nodes must be connected to each other. Payments usually fail if there is no route available or if the amount of coins you are trying to send exceeds the amount available in the channels which route the payment.

Let's say you are Alice and you want to pay Dave 0.1 BTC via the Lightning Network. You didn't open a channel to Dave but you did to Bob. However, Bob has an open channel with Charlie who has a direct channel with Dave. The path looks like this: Alice -> Bob -> Charlie -> Dave. Your payment will be routed through Bob and Charlie. Depending on their fee policy, they might charge you a small fee (usually under 1 satoshi) for routing. For example, if Charlie had only 0.05 BTC on his side of the channel, he wouldn't be able to route your 0.1 BTC payment so it would fail.

If your payment fails then there is nothing you can do except funding another channel or trying sending less coins.

Quote from: scott.carter.2020 on April 24, 2020, 10:15:06 PM

- is zap still active and fully functional till nowadays as i saw the latest release was in 2019

While the development has slowed down significantly, it doesn't lack any crucial features. The app works fairly well and is user-friendly.

Quote from: scott.carter.2020 on April 24, 2020, 10:15:06 PM

- is there any chance you could help me with my question about wasabi and coinjoin please

Sorry, but I haven't used Wasabi much. I might try answering it in the morning.

- hopefully you have any answer for my Wasabi question, if no, no problem

- correct me please if I am wrong here

lets first assume we have a host machine (main pc) and a guest machine (machine with bitcoin core installed in it) and an old wallet.dat file with 1 btc in it on a usb flash

can I do all the following (totally offline)

guest machine :

- have the already generated wallet.dat file deleted to let the bitcoin core create a new one offline (will the bitcoin core be able to create a wallet.dat file offline)
- open bitcoin core
- create a new address

main pc :

- open bitcoin core
- the bitcoin core will detect the old wallet.dat file which is in the usb flash, the 1 btc old wallet.dat (will it be able to detect the wallet with the balance on it even if it is offline, the bitcoin core here is fully synced to take notice)
- send the 1 btc to the new address offline created on the guest machine

once online, the transaction will be broadcasted

i have underlined the questions for you please to not get distracted

Quote from: ETFbitcoin on Today at 06:49:03 AM

Quote from: scott.carter.2020 on April 24, 2020, 01:03:35 PM

Wasabi & CoinJoin :

- what are the pros. and cons. of wasabi and join market, which route shall i go for the best privacy.

I haven't done throughtful research about privacy of both of them, but here's few pros. and cons. that i know

Wasabi :
+ Easy to use
+ Hardware wallet support
+ Many participant, so you don't need wait too long to before
- Minimum about 0.1BTC required to mix your coin
- It's very obvious your coin going through CoinJoin process due to fixed output size

JoinMarket :
+ Very low minimum bitcoin required to mix your coin (depending on maker though)
- There are less participant (market), so you might need to wait longer.
- Difficult to use (compared with Wasabi)

Quote from: scott.carter.2020 on April 24, 2020, 01:03:35 PM

- to avoid having my coins flagged/rejected due to being coinjoined if sent to a exchange, is it a good practice to send the coins after mixing to a new bitcoin core wallet/address and from there send it to the exchange, if no, how would you advise me to send the coinjoined coins without being flagged

There's no good/best practice since it's unknown how exchange trace your coin, how far they're willing spend resource to trace your coin and how "sensitive" their system to flag your coin or not.

can i infer from your helpful post that wasabi is got in p2p transaction, like for example, sending you bitcoins in exchange for fiat or alt. coin ?