What said in that article is wrong.
Any UTXO you have is spendable, however sometimes it's not worth it to spend them.
If trustwallet doesn't allow you to spend a UTXO, it doesn't mean that's not spendable. You can import your key to another wallet and spend them.


Assume that you have received two bitcoin transactions. In one of them you received 0.01 BTC and in the other one you received 0.00001 BTC.
Now you have two UTXOs. UTXO A is worth 0.01 BTC and UTXO B is worth 0.00001. You are going to make a bitcoin transaction with the fee rate of 50 sat/vbyte sending the fund to a single address.

If you make a transaction using UTXO A and without using UTXO B, your transaction fee would be around 5600 satoshi.
If you add UTXO B to your transaction, the fee would increase to around 8900 satoshi. This means that if you add UTXO B to your transaction, you increase the fee by 3300 satoshi, while UTXO B is worth only 1000 satoshi. So, it's not worth it to spend UTXO B now and for spending that, you should wait until fees decrease. This doesn't mean you can't spend UTXO B now.

You should get dust error when your transaction creates an output worth less than the dust limit.
The dust limit is 546 satoshi for legacy addresses and 294 satoshi for native segwit addresses.


Don't use turstwallet and go for a trustworthy open-source wallet that supports coin control.

First of all take note that it's not as easy as you think to make profit and I hope someone isn't trying to scam you.
Anyways, assuming you have 1000 dollars and your money is multiplied by 1.3 after each week, you will have 23,298 dollars after 12 weeks, 190,050 dollars after 20 weeks and 294,632,676 dollars after 48 weeks.


After n weeks, you will have 1000*(1.3)ⁿ.

Bitcoin transactions are irreversible and if the transaction is confirmed, that's final.  


No.
To move fund from an address, what is required is its private key.
Take note that all bitcoin addresses that have received bitcoin are public and if it was possible to move fund just with knowing the address, bitcoin would have no value now.


It may worth mentioning that anyone who knows your bitcoin address can check your transactions.
So, if you care about your about your privacy, you shouldn't reuse addresses.

No. That wasn't pinkfloyd's fault.
According to what pinkfloyd said, he/she requested a withdrawal to bc1q6wk6ld89e7k2ezma0wqxeqh4awxth68w0z5u9r and the following transaction was made to process that.

0a17046452462d68882f4cda2007d17a5a17029336e8ef1cbe06599ae377b927

But the same coins were spent in other transactions and that transaction is now invalid.

According to etherscan, the required gas price for getting confirmation is now 45 Gwei.
As for a normal ethereum transaction 21,000 units of gas is required, the required fee is now around 0.0009 ETH which is worth around 2.2 dollars.

The required fee would be higher if you want to send tokens and note that you would have to pay much higher fees for withdrawal from exchanges.

Currently, the purging fee rate is more than 10 sat/vbyte for any node with default mempool size. This means that you can't broadcast a transaction with the fee rate of 1 sat/vbyte at all.
Even you run your own node or you can connect to a server which allows you to broadcast such a transaction, it will likely rejected by other nodes and it can't be propagated to the network.

Announced? Who should announce that?

Take note that there is no way to know the exact time of halving and there is nothing to be announced.
All we know is that the halving will be at block number 840000 and we can only have estimates on when that block will be mined.

The block reward will be halved at block number 840000 not 840001.
In other words, the block number 839999 will be the last block in which 6.25 new bitcoins will be generated and the block number 840000 will be the first block in which 3.125 new bitcoins will be generated.

Do you want to send 0.22 BTC or 0.22 mBTC?
Even if you want to make a transaction sending 0.22 mBTC, the error message is still true.

0.379 mBTC is equal to 0.000379 BTC and assuming you want to send 0.22 mBTC, the remaining fund is only 0.000159 BTC which is not enough for paying 0.9 mBTC (or 0.0009 BTC) as transaction fee.

Have you received the fund in several transactions? That's probably why you have to pay that high transaction fee.

Do you remember the starting character of the bitcoin address you had on your old phone?
Maybe, you sent fund to the legacy address (the address starting with1).

If that's the case, follow this guide to change the address type on your newly created wallet.
How to switch the Bitcoin address format?

The transaction is no longer valid.

There were two receiving addresses in the transaction in question. bc1qyetavzj5a626hn9knws6v3feas2mjm54yck06x and bc1q6wk6ld89e7k2ezma0wqxeqh4awxth68w0z5u9r
One of these two addresses is owned by you. Right?

If so, you haven't received any fund and the only thing you can do now is to contact the sender and tell them the withdrawal transaction is not valid.

With canceling a transaction in electrum, you replace it with a new one paying higher fee and sending the fund to one of your own addresses.

If you have an unconfirmed transaction and you want it to get confirmed fast, just bump the fee.
If you cancel the transaction and then make a new one, you only waste your money. Because you will have to pay fee for an extra transaction.

As I said in my previous post, it's possible that the replacement transaction has been made to a different address.
If the receiving address used in the replacement transaction doesn't belong to your wallet, it's normal that the transaction is not displayed in your wallet.

Do you know the sender? Maybe, you got scammed.


Yes, post your transaction ID.

Import your wallet into electrum, so that you can customize the fee and make a RBF-enabled transaction.


BitPay wallet is non-custodial and gives users full control over their fund.
BitPay doesn't allow users to set the fee rate manually and it's very bad at fee estimating.

At the time I am writing this post, around 120 sat/vbyte is enough to put your transaction less than 1 vMB from the tip of the mempool and below is how BitPay is estimating the required fee rate.

Super Economy: 149 sat/vbyte
Economy: 199 sat/vbyte
Normal: 281 sat/vbyte
Priority:  281 sat/vbyte
Urgent:  421 sat/vbyte


To import a seed phrase generated by Bitpay into electrum and get the same addresses, you must use the derivation path m/44h/0h/0h.

8 blocks, not 2 blocks.

According to the first chart, if you set the fee rate to 140 sat/vbyte, you should wait for at least 8 blocks.
Note that each block can include up to 1 vMB of transactions.


I couldn't understand how you got those numbers.
Here are my calculations for the case the fee rate used for the transaction is 200 sat/vbyte.

1 legacy input and 1 legacy output: 191 sat, 38,200 sat
1 legacy input and 1 nested segwit output: 189 sat, 37,800 sat
1 legacy input and 1 native segwit output: 188 sat, 37,600 sat


1 nested segwit input and 1 legacy output: 135 vbyte, 27,000 sat
1 nested segwit input and 1 nested segwit output: 133 sat, 26,600 sat
1 nested segwit input and 1 native segwit output: 132 sat, 26,400 sat

1 native segwit input and 1 legacy output: 112 sat, 22,400 sat
1 native segwit input and 1 nested segwit output:  110 vbyte, 22,000 sat
1 native segwit input and 1 native segwit output: 109 vbyte, 21,800 sat

According to consensus rules, the total value of inputs must be equal or greater than the total value of outputs. This means even a transaction with zero fee and outputs worth zero can be valid.
According to standard rules, the fee rate must be equal or greater than 1 sat/vbyte and the value of any of the outputs created in the transaction must be greater than the dust limit.


Almost all nodes follow these standard rules and reject any transaction creating an output worth less than the dust limit, regardless of the fee paid for the transaction.
Almost all nodes reject any transaction with the fee rate of less than 1 sat/vbyte, regardless of the value of outputs.


If you run your own node, you can broadcast a transaction with zero fee and an output with zero value, but other nodes will reject it and your transaction won't be propagated to the network. Such transaction must be sent directly to a mining pool.

You can check your transaction on a block explorer to make sure it's valid and it has been confirmed.
But what makes you think the watch-only wallet may be fake and shows wrong information? Didn't you create the watch-only wallet by yourself? What software did you use for creating your watch-only wallet?


By the way, note that if your transaction has received 1 confirmation, it will likely receive more confirmations, but you shouldn't consider a transaction with 1 confirmation final especially if you have received a big amount of bitcoin.

Note that it's possible to replace an unconfirmed transaction with a new one paying higher fee and sending the fund to a different address.
Check the replacement transaction on a block explorer and see if the receiving address is same as the replaced transaction.

If you want to have a cold wallet, one solution is to get a hardware wallet and send all the fund to that.
The other solution (which requires some technical knowledge) is to create a new wallet on an air-gapped device.



You probably had bitcoin on multiple addresses and didn't import all of them.
Did you check "Include unused" when exporting your private keys from Armory?


The most valuable forked coin is BCH which costs only $247 per coin now.

To claim the forked coins, you can follow the guide provided by LoyceV.
LoyceV's Bitcoin Fork claiming guide (and service)

Before claiming the forked coins, make sure you have moved all your bitcoin.
You swept your private keys and moved your fund to a new wallet, but since you said you had 0.34 BTC and now you have 0.28 BTC in your electrum wallet, there's a chance you still have some bitcoin in your old wallet.