Tokens & NFTs
Explore token standards — ERC-20, ERC-721, ERC-1155, soulbound tokens, approvals, metadata, and token security.
ERC-20 Simulator
Step through ERC-20 token operations — transfer, approve, transferFrom, mint, burn, and attack scenarios — with live balance tracking, allowance visualization, and event logging.
ERC-721 Simulator
Visualize NFT operations — mint, transfer, approve, setApprovalForAll, and attack scenarios — with a visual ownership map, emoji NFT tiles, and dual approval model tracking.
ERC-1155 Simulator
Interactive ERC-1155 simulator showing fungible tokens and NFTs in one contract. Batch transfers, balance matrix, operator approvals, and ERC-20 vs ERC-721 vs ERC-1155 comparison.
NFT Metadata Explorer
Fetch and inspect ERC-721 NFT metadata across 9 EVM chains. View token images, attributes, URI resolution chain, and storage analysis for IPFS, Arweave, on-chain, and HTTP-hosted metadata.
Token Approval Flow
Visualize the approve() → transferFrom() pattern in DeFi. Step through DEX swaps, unlimited approvals, lending deposits, NFT marketplace sales, and phishing attacks with live balance and allowance tracking.
Soulbound Token Demo
Interactive non-transferable token simulator. Watch credentials minted to wallets, see transfers blocked, verify ownership on-chain, and understand revoke vs burn. EIP-5192 reference with Solidity implementation.
Token URI Builder
Build valid ERC-721 and ERC-1155 metadata JSON files with a visual form, 5 templates, real-time validation, marketplace preview, and one-click copy/download.
Token Guard
Scan and revoke token approvals across 9 EVM chains. Detect unlimited ERC-20 allowances and NFT operator permissions. Connect MetaMask to revoke in one click.