Bridges
The Aavegotchi Bridge
A bridge is a piece of software that allows you to transfer assets from one blockchain to another.
The initial plan was to launch Aavegotchi on Ethereum Mainnet on 4 January 2021. Due to high gas fees, the community voted to launch the project on Polygon Network instead. As a result of this decision, assets have to be bridged from one network to another.
To facilitate the transfer of assets, Pixelcraft studios created the Aavegotchi Bridge that allows users to send assets back and forth across both networks. Since then, other bridging solutions have also arrived at the scene. This page will cover some of the most common bridges.
Contents
Aavegotchi Bridge
The Aavegotchi Bridge is the official bridge created by Pixelcraft Studios. Currently, it allows for the transfer of ERC-20 tokens and ERC-721 assets (Aavegotchis) from Ethereum Mainnet to Polygon Network and vice versa. Bridging for ERC-1155s (Wearables) will be coming shortly.
The Aavegotchi Bridge can be accessed here.
The following is a step-by-step example of bridging ERC-20 tokens from Ethereum Mainnet to Polygon:
1). Click on the token image (circled in red below) to open a dropdown menu of tokens. Select the token that is to be transferred to Polygon.
2). Key in the amount that is to be transferred.
3). Click the "Approve Transfer" button.
4). Click the "Transfer to Polygon" button.
5). Wait for ~10 minutes for your asset to appear on Polygon network.
The same concept applies for sending assets back to Ethereum Mainnet from Polygon Network.
Decentralized Bridges
Polygon Bridge
The Polygon bridge was the first cross-chain bridge created between Ethereum and Polygon. It is the official bridge of the Polygon team, and uses a validator driven model to transfer assets between Ethereum and Polygon. This bridge can transfer $GHST tokens, but cannot bridge NFT assets.
For those who want to use the Polygon Bridge, here are the steps to take:
1). Access the Polygon Web Wallet v2 at https://wallet.polygon.technology. Click on Polygon Bridge (circled in red below).
2). Select the token from the dropdown menu, key in the amount into the textbox, and click the Transfer button
It can take up to 10 minutes for the tokens to arrive in your Polygon address.
If you need help with anything you can join the Aavegotchi Discord and ask a fellow community member.
Umbria Narni Bridge
The Narni bridge is a novel bridging solution created by Umbria Network, that uses a liquidity-bridge model, to reduce the cost of bridging by up to 90%. The Narni bridge resolves transactions in approximately 5 minutes, and costs approximately $40 (100 GWEI) to transfer GHST tokens between the Ethereum and Polygon blockchains. Currently, only ERC-20 tokens are compatible with the Narni bridge; NFTs cannot be bridged.
To use the Umbria Narni Bridge, please refer to the following steps:
1). Visit the Umbria Narni Bridge. Select the originating and destination networks.
2). From the dropdown menu, select the token to be bridged.
3). Key in the amount of token to be bridged. The Narni bridge will provide an estimation of the amount of tokens you will receive post-bridging. The bridge takes a 0.5% fee for bridging assets between chains. The fees go to the liquidity providers that are providing assets on the Narni bridge.
4). At the point of bridging, you will be provided with 2 options (QR code or MetaMask). Bridging using MetaMask is the recommended approach. It is also recommended to select the fastest speed you can afford to minimize the risk of the transaction getting temporarily stuck.
5). After sending the transaction, a modal will be displayed. The 1st section displays your transaction process to reaching the bridge. Once your transaction has reached the bridge, you will receive the first tick. It can take a few minutes for you to receive both ticks, but if it takes longer than 10 minutes, please contact the Umbria team on Discord and they will help you solve the issue.
Finally, you will receive two pink ticks, which means that your transaction has successfully bridged, and you will be able to see the assets in your wallet on the destination blockchain. You will also be able to see the transaction on the destination block explorer by clicking the relevant button on the screen at this stage.
If you have any questions about the Umbria Narni Bridge, or would like to chat with a member of the support of developer team, reach out on the Umbria Discord channel
Centralized Bridges
AscendEX
AscendEX (formerly BitMax) is a cryptocurrency platform that allows withdrawals to Polygon Network. Check out the infographic below for more details.
Transak
Transak is a fiat-to-crypto payment gateway. Users pay using their credit card and receive the tokens on the wallet address they specified.
See this post by our community member for a step-by-step guide.
Crypto.com
Crypto.com is a mobile app wallet. They enable withdrawals of MATIC and USDC to Polygon Network.
1). Select Transfer --> Withdraw --> Crypto --> External Wallet
2). Click the + sign at the top right corner
3). Select the token to be withdrawed. If withdrawal is available for that particular token, you will see an Option for "Polygon" in the "Select Network" field (see screenshot below).
Binance
Binance is one of the largest cryptocurrency exchanges in the world.
As of 31st May 2022, they have enabled GHST deposits and withdrawals directly on Polygon.
