The Banker is a layer 2 vault for the Mintopoly Money tokens. Here's what that means...
Mintopoly! Money is an Ethereum-based token. That makes it highly secure and flexible, but it also means that gas fees are prohibitively high for most transactions. To address this, we created a layer 2 token on the Polygon network to enable secure, decentralized, lightning-fast transactions that cost a fraction of a cent – all while retaining access to the root Ethereum tokens.
This is a HUGE step for the game, because it allows us to quickly send airdrops directly from the vault to hundreds of players instantly. It also paves the way for an exciting future of in-game transactions.
When the MM tokens are moved from Ethereum into the Polygon vault, the original Ethereum-based tokens are safely locked up and the same amount of new Polygon-based tokens are minted.
When the owner wants to withdraw their tokens back to the Ethereum mainnet, the Polygon tokens are burned and the same amount of Ethereum tokens are unlocked and returned to the owner. These transactions are free (plus gas) and owners can move their funds between Ethereum and Polygon at will.
The top of this page will show your current balance for both mainnet tokens and polygon vault tokens. Until we build our own on-site transfer functions (coming soon) Transactions to / from the vault can be preformed on the official Polygon bridge. Simply connect your wallet and select Mintopoly Money from the dropdown (note there are ETH gas fees to move funds into or out of the vault).
In order to withdraw from Polygon, you'll need to add the Polygon network to your wallet. Here's the details on how to do that in MetaMask, but the process is similar in other wallets.
Open MetaMask and navigate to settings > Networks > Add Network and enter the following details:
Network Name: Polygon
New RPC Url: https://polygon-rpc.com/
Chain ID: 137
Currency Symbol: MATIC
Block Explorer URL: https://polygonscan.com
Done! Whenever you need to transact on Polygon, such as transferring within the network or withdrawing back to Ethereum) you'll need to switch to this network (the wallet will prompt you to do so when needed).
In order to transfer tokens within the Polygon network (i.e. to send to a friend or to make an in-game purchase, coming next year), you'll need MATIC tokens to pay the gas fees. Currently, 0.001 MATIC (a USD value of a faction of one cent) is enough for many transactions. You can actually get this small amount of MATIC for free from the following faucets: