Approved workflow

Release Candles (token symbol CNDL) on Sepolia as a univ4_hook launch. Token: Candles (CNDL), total supply 1,000,000,000 CNDL with 18 decimals, minted once to the deployer (a separate zero-argument ERC-20, no mint, owner or admin). Hook: OHLCCandleHook, a Uniswap v4 hook on the token's native-ETH pool that records 5-minute candles. afterInitialize stores lastTick[poolId] = the initial tick. afterSwap reads the post-swap tick with StateLibrary.getSlot0 and updates candle[poolId][bucket], bucket = block.timestamp / 300: on a bucket's first swap open = lastTick (the price before that swap, since only swaps move the price); high and low track the max and min of open and every post-swap tick; close = the post-swap tick; volumeEth += |delta.amount0()|, volumeToken += |delta.amount1()|, swaps += 1; then lastTick = the post-swap tick and Candle(poolId, bucket, open, high, low, close, volumeEth, volumeToken, swaps) is emitted. Prices are ticks (price = 1.0001^tick, in token per ETH), packed so a swap inside an existing bucket rewrites at most two storage slots; afterSwap stays under the 100,000-gas afterSwap ceiling in uniswap-v4-security, and a bucket's first swap (fresh slots) is measured separately. Buckets without swaps have no candle; readers draw them flat at the previous close. getCandles(poolId, fromBucket, count) returns up to 288 buckets (24 h); a larger count is clamped to 288. No deltas, no fee, no funds, no admin. README: anyone can paint these candles with swaps; they are a display record, not an oracle, and nothing may price off them. Deploy shape, matching the live Sepolia hook launches 170 and 186 (168 passed the mainnet PoolManager and is not a model): OHLCCandleHook's only constructor argument is the Sepolia PoolManager 0xE03A1074c86CFeDd5C142C4F04F1a1536e203543; every rate, window and threshold here is a source constant; there is no owner, admin, setter, pause, upgrade or sweep, and no $owner or $token argument. Permissions are exactly afterInitialize, afterSwap (low address bits 0x1040), all others false; the constructor calls Hooks.validateHookPermissions and the CREATE2 salt is mined for those bits. The factory initializes the pool (currency0 native ETH, currency1 CNDL, fee 3000, tickSpacing 60) and seeds one-sided CNDL liquidity, so nothing in the hook may revert that initialize or that liquidity add (launch 138 was parked when a beforeInitialize gate reverted the factory), and the first buy lands in a pool that holds no ETH. All state is keyed by PoolId; a pool on this hook whose currency0 is not native ETH gets zero deltas and no other effect. Every callback requires msg.sender == PoolManager. Tests (Foundry, a real v4-core PoolManager deployed in the test, hook at a mined address): a launch rehearsal that initializes at the manifest price, seeds one-sided CNDL liquidity like the factory and makes the first buy into the ETH-less pool; exact-in and exact-out in both directions; dust amounts; a pool whose currency0 is not ETH; direct callback calls from a non-PoolManager address revert; fuzzed sizes; and specifically: the first swap's open equals the pre-swap tick; several swaps in one bucket; a swap at exactly a multiple of 300 seconds opens a new bucket; liquidity adds do not disturb candles; negative and extreme ticks; getCandles bounds (a count above 288 is clamped to 288); afterSwap gas. An independent adversarial review (read-only) must attack: whether open can be wrong (any way the price moves without a swap), int24 packing and sign handling, bucket math, gas per swap, and view bounds. It reports each finding with the exact call sequence that triggers it. Website: one static page (dist/index.html) that reads the hook's views and events and the pool price through Uniswap's Sepolia StateView, with a buy/sell form that swaps through Uniswap's published Sepolia PoolSwapTest router (check it has code). It shows a candlestick chart of the last 24 hours from getCandles (gaps drawn flat) with a volume bar per candle.

Sepolia (11155111) only, launched as univ4_hook on the native-ETH pool the factory opens. GitHub publication and IPFS hosting are approved. Launch token: fixed supply of 1,000,000,000, 18 decimals, no constructor arguments, minted to msg.sender, no mint or admin. One hook; enable only the permission flags its logic uses and never revert the factory's pool initialisation or its one-sided seed. Like every hook launch that has gone live, the hook constructor takes exactly one argument, the Sepolia PoolManager 0xE03A1074c86CFeDd5C142C4F04F1a1536e203543; rates, recipients and the token are source constants or learned from the pool key, and there is no owner. Take any hook fee through return deltas (settled as ERC-6909 claims, paid out by pull) instead of assuming a dynamic-fee pool key. Where a swapper identity is needed, read it from hookData; a swap without valid hookData credits nobody (a router can never claim), and hookData is unauthenticated, which the README states. No external oracles or VRF, no proxies, delegatecall or selfdestruct. foundry.toml sets bytecode_hash = "none". Any website is a static export with index.html in dist/. Site label lab-candles-hook.

Build CNDL and OHLCCandleHook (permissions afterInitialize, afterSwap; PoolManager-only constructor) with a launch-rehearsal Foundry suite and an independent adversarial review, deploy them through the factory on Sepolia, then build the one-page site against the live pool.

Website: one static page (dist/index.html) that reads the hook's views and events and the pool price through Uniswap's Sepolia StateView, with a buy/sell form that swaps through Uniswap's published Sepolia PoolSwapTest router (check it has code). It shows a candlestick chart of the last 24 hours from getCandles (gaps drawn flat) with a volume bar per candle.