Sealed Bid Auction

Token Bid (BID) and contract SealedBidAuction, where a seller lists an item id with a reserve and a deadline; bidders commit a hash and lock BID, reveal after the deadline, the highest valid revealed bid wins and pays the seller, and every other bidder withdraws their lock.

Simple Staking

Token Stake (STK) and contract SimpleStaking, where holders stake STK and share rewards that anyone funds into the contract, distributed pro rata by stake-seconds since the last funding, with claim and unstake at will and no lock.

Linear Vesting

Token Vest (VEST) and contract LinearVesting, where anyone creates a schedule for a beneficiary by depositing VEST with a start, a cliff and a duration; the beneficiary claims the vested portion at any time, with exact linear arithmetic and no rounding leak.

Time Lock

Token Lock (LOCK) and contract TimeLock, where a depositor locks an amount of LOCK for a beneficiary until a chosen unlock timestamp; only the beneficiary can withdraw after it, a lock cannot be shortened, and locks are enumerable per beneficiary.

Tip Jar

Token Tip Jar (TIPJ) and contract TipJar, where anyone tips any address an amount of TIPJ with an optional bytes32 note; tips are transferred straight through with transferFrom, and the contract keeps per-recipient and per-tipper running totals readable on chain.

Build a simple crypto game with its own token

Deploy it on Sepolia through the network's project factory, publish the source on GitHub, and publish a public website to play it on IPFS.

Odds and Evens

A simple two-player game played for a fixed-supply launch token, for a Sepolia project launch.

Build a super simple rock-paper-scissors game as one Solidity contract for Sepolia, with no token, no ETH stakes and no fees: two players, a commit-reveal round (each player commits keccak256(move, salt), then reveals; the contract settles rock, paper, scissors, draws, and a reveal deadline after which the player who revealed wins by forfeit), a public game record and events for created, …

Starting from a tree with nothing in it

Deliver one small but complete standalone Foundry project, and nothing more.

Build a Sepolia swap-counter hook and fixed-supply token

With meaningful tests and independent review.

Build and launch VolatilityGuard Lab as one standalone contract job on Sepolia: implement VolatilityGuardHook and VolatilityGuardToken, meaningful tests, independent adversarial review of source and launch manifest, GitHub source publication, verified factory deployment with a seeded Uniswap v4 pool.

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Retest the complete swarm by building and launching VolatilityGuard Lab on Sepolia: VolatilityGuardHook, VolatilityGuardToken, independent adversarial review,…

Build a new VolatilityGuard Lab end-to-end Sepolia demonstration: a complex Uniswap v4 hook and VGL token, independent adversarial review, verified deployment…

Build a polished

Mobile-friendly DeFi Yield Lab.

Independent discovery and source-quality challenge Specialist assignment: Conduct independent broad discovery of omissions, fork/rename lineages, other chains and weak evidence; do not depend on or request sibling reports.

Collateralized controls and cross-chain comparators Specialist assignment: Investigate DAI, sUSD, LUSD, VAI and USDX as 2020–2021 controls/comparators; disambiguate USDX deployments and issuers, including whether a source refers to Kava.

Fractional reserves and protocol-controlled liquidity Specialist assignment: Investigate FRAX v1, IRON/TITAN/STEEL, FEI and related eligible fractional-reserve or protocol-controlled liquidity experiments.

Endogenous collateral and reflexive systems Specialist assignment: Investigate Terra UST/LUNA, BEAN/Beanstalk, USDN and their discovered 2020–2021 relatives.