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

The NFTs on Aptos are now equipped with cross-chain functionality with other blockchains, a groundbreaking development that brings new opportunities for users and creators. This article will delve into the workings of the NFT cross-chain bridge, the supported blockchain networks, and the specific operational steps.

The Working Mechanism of NFT Cross-Chain Bridges

The NFT cross-chain bridge allows for the transfer of NFTs between supported blockchains while retaining their metadata. The cross-chain process includes the following steps:

1. The original NFT is locked in the smart contract of the origin chain.
2. An equivalent packaged NFT is minted on the target chain.
3. The packaged NFT retains its original name and appearance, and behaves indistinguishably from other local NFTs on the new chain.

It is worth noting that packaged NFTs can be sent back to the original chain at any time and unlock the original NFT. This means that, for example, an NFT originating from Aptos can be cross-chain to Ethereum, traded on a certain exchange platform, and then returned to Aptos by the new owner.

Support cross-chain to Aptos blockchain network

Currently, users can cross-chain NFTs from multiple blockchain networks to Aptos, including but not limited to: Arbitrum, Aurora, Avalanche, BSC, Celo, Ethereum, Fantom, Karura, Klaytn, Moonbeam, Oasis, Optimsm, Polygon, and Solana. These networks also support cross-chain transferring NFTs back from Aptos.

Introduction to Cross-Chain Protocols

The key to achieving this cross-chain functionality lies in an interoperability protocol. This protocol allows projects to build on its universal messaging layer, connecting multiple blockchain networks. It enables cross-chain functionality by transmitting messages between different chains, which are observed and verified by a network of nodes, and upon validation, submitted for processing by the target chain.

This simple and efficient messaging mechanism enables cross-chain functionality, allowing users to interact with cross-chain decentralized applications, transfer assets between different networks, or access cross-chain data. The protocol has processed tens of billions of dollars in transaction volume, transmitting millions of messages daily and supporting dozens of protocols.

Aptos on-chain NFT cross-chain Operation Guide

1. Visit the cross-chain bridge web interface.

2. Choose the source chain that contains the NFT you want to cross-chain from the optional multiple chains, such as Arbitrum.

3. Select the specific NFT you want to cross-chain from the NFT list, click and confirm the operation through wallet signature.

4. After the cross-chain is completed, if you want to cross back the wrapped NFT to the original chain, just click the "redeem" button.

By following these simple steps, users can easily achieve cross-chain transfer of NFTs, greatly increasing the liquidity and use cases of digital assets. With the continuous development of cross-chain technology, we can expect to see more innovative applications and broader ecosystem interoperability.