onchain logic
Monad Testnet smart contract
kernel
a Solidity contract deployed to Monad Testnet via MetaMask private key, then verified on Etherscan
how it drives the UI
a 'verified onchain' badge with the live contract address and an Etherscan link
Four onchain primitives, demystified.
Every idea in this repo leans on one of four web3 primitives. Each one runs against Monad Testnet (a free, fast EVM testnet) so you can ship a verifiable demo with zero hosting, and Privy sponsors the runtime gas for signed-in users so they never touch MON.
The five secrets
Add these in your Lovable project (Settings → Secrets) before pasting any mega-prompt:
- METAMASK_PRIVATE_KEYExported from MetaMask. Fund on Monad Testnet via the Monad faucet.open ↗
- ETHERSCAN_API_KEYEtherscan v2 key — covers MonadScan too. Used by npx hardhat verify.open ↗
- PRIVY_APP_IDGoogle sign-in + embedded wallet on Monad Testnet.open ↗
- PINATA_JWTPin to IPFS.open ↗
- MONAD_RPC_URLOptional. Defaults to https://testnet-rpc.monad.xyz. Swap for a provider endpoint if throttled.
250 ideas use this
decentralized storage
IPFS via Pinata
kernel
a Pinata JWT upload that pins images / JSON / manifests to IPFS and returns a permanent CID
how it drives the UI
a 'pinned to IPFS' chip with the CID and an ipfs.io gateway preview
wallet UX
Privy social + sponsored tx
kernel
Privy embedded wallet bootstrapped with PRIVY_APP_ID — Google sign-in plus sponsored transactions so users never see gas
how it drives the UI
a one-click 'Sign in with Google' that drops the user straight into the app with an onchain identity
onchain authorship
NFT provenance mint
kernel
an ERC-721 contract on Monad Testnet that mints a creator-owned token pointing at an IPFS CID, verified on Etherscan
how it drives the UI
a 'mint to claim authorship' button that returns the tokenId, owner address, and Etherscan link