🖼️NFTs

Fuul supports NFTs (ERC-721 and ERC-1155) as on-chain rewards. Like ERC-20 token rewards, NFTs are distributed through the voucher-based claiming system.

How it works

The NFT reward flow mirrors the standard token flow:

1. User performs a qualifying action

2. Fuul issues a signed claim check for the specific token ID

3. User submits a claim transaction to the Fuul contract

4. The NFT is transferred from the project's contract to the user's wallet

The claim check includes a token_id field specifying which NFT the user is entitled to claim.

Token type reference

Token type	Value	Description
ERC20	1	Fungible tokens
ERC721	2	Non-fungible tokens (unique items)
ERC1155	3	Multi-token standard (editions, badges)

Use cases

• Exclusive membership NFTs — reward early adopters or top users with a unique collectible

• Achievement badges — mint on-chain badges for reaching milestones (e.g., first trade, 100 referrals)

• Access passes — NFTs that unlock features or content in your protocol

• Event participation — distribute NFTs to users who participated in a specific campaign

Claiming NFT rewards works identically to claiming ERC-20 tokens. Users submit a transaction with their signed claim check. See Claiming Onchain Rewards for the full implementation guide.