This is a copy of any token transferred from one blockchain to another.
There are many blockchains in the cryptocurrency industry: Bitcoin, Ethereum, Cosmos, Avalanche, etc. Blockchains are deprived of the opportunity to "understand each other": everyone acts according to their own rules and speaks their own language. Each blockchain has its own Native token - a coin that is used to pay for the commission:
for the Bitcoin network, this is bitcoin (BTC)
for Ethereum - ETH
For Cosmos - Atom
For Avalanche - Avax
If you want to carry out any actions, for example, send a USDT tokens to the EThereum network to another wallet, the commission will have to be paid in ETH tokens if Avalanche is an AVAX commission, etc. However, if you decide to send your USDT from Ethereum to Avalanche, your USDT will be lost. Why? Because USDT on the Ethereum and USDT network on Avalanche is not the same thing, because we remember that each blockchain lives according to its own rules.
And what to do if you urgently need to send your USDT from one network to another? For these purposes, cross -miners were invented - special applications that allow you to translate tokens from “one language to another”, that is, from one blockchain to another. In one network, the token is blocked, and in another - a copy is created that does not lose its original value. For example, if you transfer BTC from the Bitcoin network to Ethereum, it will become WBTC, i.e. wrapped.
Good morning / Good evening -
These are commission fees that the user pays to miners or validators of the network for various transactions and transactions. The commission is paid using the native tokens of a particular network, for example, on the BSC network for transactions, you need to pay in BNB.
A computer (server) connected to a blockchain and performing the functions of confirming transactions, creating blocks and storing copies of blockchain. In order for the computer (server) to become a node, it is necessary to install special software.
The block reward is the payment that is offered to the node that is securing the blockchain. In the case of Bitcoin, which is has a Proof-of-Work consensus algorithm, these would be the miners. The payment is in the form of the native cryptocurrency of that blockchain. The amount is a predetermined reward per block, but often that is supplemented with the fees that are paid for the transactions that block contains. For Bitcoin the current block rewards are cut in half every four years. This is called the ‘halvening’.
1) Mining Pool (Mining Pool) is the association of miners in order to simplify the production of cryptocurrencies.
2) Poole as a common fund. Investors create similar funds, invest their resources (this is not necessarily money, possibly investing their own time) in this fund and on behalf of the fund invest, for example, through tokens. The allocation won is distributed between the participants in the pool in proportion to the invested resources.