PolkaBridge (PBR) is the native token of the PolkaBridge project, primarily existing as an ERC-20 token on the Ethereum blockchain. It serves several purposes within the PolkaBridge ecosystem:

1. Transactional Activity: PBR tokens are required to pay fees for transactions on the network.
2. Staking Collateral: PBR tokens are used as collateral for staking activities.
3. Staking Rewards: PBR tokens are distributed as rewards for staking.
4. Launchpad IDOs: PBR tokens are necessary for participating in Initial Decentralized Offerings (IDOs) on the PolkaBridge Launchpad.
5. Cross-Chain Swaps: PBR tokens are used as the base asset for cross-chain swaps.
6. Lending and Prediction: PBR tokens are used for lending and prediction purposes within the PolkaBridge platform.

These uses highlight the central role of PBR tokens in facilitating various activities within the PolkaBridge ecosystem, which aims to bridge Polkadot to other blockchains and provide a range of DeFi features.

To store PolkaBridge (PBR) tokens securely, you can use various types of wallets. Here are some options:

1. Cold Wallets: These are offline wallets that provide the highest level of security. There are two types:

   • Paper Wallet: Generate public and private keys offline and print them on paper. This method is highly secure but less convenient.
   • Hardware Cold Wallet: A physical device that stores your cryptocurrency keys. It is more user-friendly and suitable for large holdings.

2. Hot Wallets: These are online wallets provided by exchanges or other services. While they are more accessible, they are also more vulnerable to hacking and other security risks.

3. Multi-Asset Wallets: These wallets support multiple cryptocurrencies, including PolkaBridge. Examples include Atomic Wallet, which is trusted by millions of users and offers features like private key encryption and 24/7 support.

4. Web3 Wallets: These wallets, such as Metamask, are used for decentralized exchanges (DEX) and can also be used to store PolkaBridge tokens.

5. Crypto Wallet Apps: Apps like Trust Wallet can be used to store PolkaBridge tokens, offering a balance between security and convenience.

When choosing a wallet, consider factors like security, ease of use, and compatibility with your needs.

To buy PolkaBridge (PBR) tokens, you can follow these steps:

1. Find a Reliable CEX: Look for a trustworthy centralized exchange like Binance where you can buy PolkaBridge. You can refer to CoinMarketCap for a list of exchanges that support PBR trading.

2. Create an Account: Sign up for an account on the chosen exchange and complete any necessary verification steps.

3. Fund Your Account: Deposit funds into your account using a supported currency like USDT or BTC.

4. Navigate to the PolkaBridge Market: Find the PolkaBridge market on the exchange and select it.

5. Choose a Transaction Amount: Enter the amount of PBR you want to buy.

6. Confirm Purchase: Review the details and confirm your purchase.

1. Choose a DEX: Select a decentralized exchange that supports PolkaBridge trading, such as Uniswap or Pancakeswap.

2. Get a Web3 Wallet: Download and install a Web3 wallet like MetaMask or a supported app wallet like Trust Wallet.

3. Create and Set Up a Wallet: Create a new wallet and set it up according to the wallet's instructions.

4. Transfer Funds: Transfer the necessary cryptocurrency (e.g., ETH for Ethereum-based DEX) from a CEX or another wallet to your self-custody wallet address.

5. Connect to the DEX: Connect your wallet to the DEX by clicking "Connect Wallet" and following the instructions.

6. Swap for PBR: Find the "Swap" option, select the token you want to trade for PBR, enter the amount, and confirm the transaction.

Remember to always be cautious of scams and ensure you are using the correct contract address for PolkaBridge (PBR) on DEX platforms.