Arbitrum Odyssey Week 1 Cross-Chain Interoperativity Guide

About Cross-Chain Week

During Week 1 of the Arbitrum Odyssey event, by connecting ETH assets to the Arbitrum network through 19 officially designated third-party cross-chain bridges, participants can receive 1 NFT. Moreover, the bridge with the highest cumulative ETH transaction volume entering the Arbitrum network during the cross-chain week can also receive an additional NFT.

Cross-Chain Bridge for Participation in Events

A total of 19 cross-chain bridges participated in the event, including Across, Banxa, BoringDAO, Bungee, Celer, and others.

Frequently Asked Questions

• Only calculate ETH assets
• No minimum cross-chain amount requirement
• Use the bridge with the largest cross-chain volume to earn additional NFTs
• NFTs are expected to be available for collection after June 28.
• Can cross into Arbitrum from any supported chain
• Multiple cross-chain bridges can be used.
• Official bridges and centralized exchanges do not participate in the event.

Notes

• The cross-chain circumference lasts for a week, providing ample time to complete.
• It is recommended to observe the data at the end of the cross-chain week to strive for additional NFTs.
• Newbies are advised to familiarize themselves with the relevant operations in advance.
• You may consider crossing over from networks like Polygon to reduce costs.
• Obtain the ultimate NFT with 13 NFTs, it is recommended to try to get the extra NFTs during the Cross-Chain Interoperativity week.
• You can purchase missing NFTs in the NFT market.

Cross-Chain Path Selection

1. The ETH mainnet directly crosses into ( with the highest fee )
2. The cost of crossing from BSC to ( is relatively low )
3. Transitioning from Polygon with the lowest fees of ( to )
4. Moving from Optimism to ( has lower fees )

Cross-Chain Bridge Tutorial

Take Bungee, Hop, and Across as examples to demonstrate:

Bungee

• Support for cross-chain entry from ETH mainnet, BSC, Polygon, and Optimism.
• The fees range from less than 1U to 5U.

Hop

• Support for cross-chain transfer from ETH mainnet, Polygon, and Optimism
• Not supported on BSC
• Fees range from less than 1U to around 5U.

Across

• Support for cross-chain transfers from the ETH mainnet, Polygon, and Optimism.
• Not supported on BSC
• The fees are generally low, with the ETH mainnet cross-chain costing around 1U.

Completing any cross-chain bridge interaction will grant you a basic NFT, while additional NFTs require monitoring subsequent data and choosing the bridge with the highest trading volume for interaction.