A full-stack Web3 dApp that allows users to mint, purchase, and auction NFTs using ETH or USDC. Chainlink oracles fetch real-time ETH/USD prices. NFT metadata is stored using Pinata (IPFS), and minting/purchasing is restricted to whitelisted users via Merkle trees.
@@ -113,3 +112,6 @@ npm install - Backend was hashing addresses with just keccak256(address) — a plain string hash — while smart contract likely expected keccak256(abi.encodePacked(address)) like Solidity does. That mismatch is why the proofs were invalid (resulting in false in cast call). - solidityPackedKeccak256(...) = mimics abi.encodePacked + keccak256 from Solidity - If the hash of your leaf in JS doesn’t match the one Solidity expects, the Merkle proof won’t validate — ever. + + +SOMe changes