Aptos on-chain NFT cross-chain implementation plan and operation guide

NFTs on the Aptos blockchain have now achieved cross-chain interoperability with other chains, a groundbreaking development that brings more possibilities for users. This article will detail how the NFT cross-chain bridge works, the supported chains, and the specific operation steps.

The Working Principle of the NFT Cross-Chain Bridge

The NFT cross-chain bridge enables bidirectional transfer of NFTs between supported chains while retaining their metadata. The cross-chain process mainly includes the following steps:

1. The original NFT is locked in the NFT bridge smart contract.
2. Mint an equivalent wrapped NFT on the target chain and add it to the corresponding collection.
3. The packaged NFT should be consistent with the original NFT in terms of name, appearance, and functionality.

The uniqueness of packaging NFTs lies in the ability to send them back to the original chain at any time and unlock the original NFT. This means users can trade and use NFTs freely across different chains, greatly increasing the liquidity and use cases of NFTs.

Supported Chains

Currently, users can perform NFT cross-chain between Aptos and the following chains:

Arbitrum, Aurora, Avalanche, BSC, Celo, Ethereum, Fantom, Karura, Klaytn, Moonbeam, Oasis, Optimsm, Polygon and Solana

It is worth mentioning that some high-value NFTs, such as Cryptopunks and Beeple's works, have successfully been transferred to the Aptos chain via cross-chain bridges.

Cross-chain Operation Guide

1. Access the NFT cross-chain bridge webpage
2. Select the source chain and target chain
3. Select the NFT to be cross-chain
4. Confirm and sign the transaction
5. Wait for the cross-chain process to complete

To transfer the NFT back to the original chain, simply select the corresponding wrapped NFT on the target chain and click "redeem" to complete the operation.

Through this cross-chain mechanism, Aptos has greatly enhanced the interoperability of its ecosystem. Users can now manage and trade their NFT assets more freely across different chains, bringing new vitality and possibilities to the NFT market.