NFT bridge for ETH<>FTM

NFT-bridge-proposal.md

ERC721 NFT token bridge ETH<>FTM

Architecture

• NFTRouter contract
• NFT Bridge nodes
• Multichain MPC network

Deployment

NFT Bridge deployment

1. NFTRouter contract on Ethereum
2. NFTRouter contract on Fantom
3. NFT Bridge nodes

NFT token initialization

1. NFT(ETH) token project owner deploy the same mapping NFT token contract on Fantom.
2. Owner transfer NFT(FTM) Token to NFTRouter(FTM) contract.

How it works

Bridge NFT from ETH to FTM

1. User deposit and lock NFT(ETH) token to NFTRouter(ETH) contract.
2. NFT bridge MPC nodes verify the locked NFT(ETH) token.
3. NFT bridge MPC nodes call NFTRouter(FTM) contract to transfer the NFT(FTM) token to user on Fantom.
4. User receive NFT(FTM) token on Fantom.

Bridge NFT from FTM to ETH

1. User deposit and lock NFT(FTM) token to NFTRouter(FTM) contract.
2. NFT bridge MPC nodes verify the locked NFT(FTM) token.
3. NFT bridge MPC nodes call NFTRouter(ETH) contract to transfer the NFT(ETH) token to user on Ethereum.
4. User receive NFT(ETH) token on Ethereum.

Fees

0.05 ETH or 300 FTM per cross-chain transaction.(0 fee for ETH<>FTM)

Security

NFTRouter contract need review and audit.

Loot NFT bridge ETH<>FTM testnet

Anyswap MPC

https://ftmscan.com/address/0x03a4cf4d39bb3e32a4d922a40db5d14458ec45e7

NFT Router

Rinkeby router

https://rinkeby.etherscan.io/address/0x5F69b7Ab8F7cAb199a310Fd5A27B43Fef44ddcC0

Fantom router

https://ftmscan.com/address/0x63D3F3b271dBbd43A788687B86D516Fe185D2509

Loot Token

Rinkeby Loot

https://rinkeby.etherscan.io/address/0xA5EEAc57C43e275f9B022E39D7d224992650fDFE

Fantom Loot

https://ftmscan.com/address/0xafbfd7b2f068c3c40ce59dafbfc2b3717c0f9a71

Bridge Loot from ETH to FTM

User deposit NFT on Rinkeby

https://rinkeby.etherscan.io/tx/0x11d0259071403d53a7de8d1eac108159332f92926a6c13c47cdadb398d3aec51

User receive NFT on Fantom

https://ftmscan.com/tx/0x6be9b561af3bbf12c9cd86a6be52e525f12c1e94a860d0f2bf9796ffc135e2aa