A simple Ethereum smart contract that turns greetings into on-chain gifts. Users can send ETH with a short message, creating permanent digital greeting cards on the Flow EVM Testnet.
This Solidity smart contract, CollectibleQuestSystem, acts as a registry and distribution mechanism for digital collectible (NFT) rewards tied to off-chain quest completion. It is designed to be a lig
sentimental voting,
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A simple Solidity smart contract that logs every user interaction on the blockchain, storing the caller’s address, the current timestamp, and the block number.
A simple ERC20 token with a built-in faucet that lets each wallet claim 1000 FTK once. No imports, no constructor, and fully autonomous on-chain.
New to this tech
Simple Lottery Vault is a decentralized lottery contract built on the Flow Testnet. It allows users to join by sending a small, fixed amount of cryptocurrency and randomly selects one winner who recei
Creating cross-platform NFTs with interoperable attributes
The Scavenger Hunt NFT Game allows players to participate in a clue-based adventure managed by an admin. Players who successfully complete all the challenges are marked as winners.
ZKP Verified NFT is a decentralized smart contract that issues NFTs to users who are cryptographically verified using Zero-Knowledge Proofs (ZKPs). The system ensures privacy-preserving identity valid
**without providing any input fields**. Each log entry automatically captures the caller’s address and the exact timestamp when the interaction occurred. This contract is **deployed on the FLOW
