exist is a uniswap v4 hook bound to a single liquidity pool on sol mainnet. its address was mined via create2 so that the trailing fourteen bits of the address encode the precise set of permission flags it requires. the v4 poolmanager will refuse to invoke any callback whose flag is not present in the contract's address, which means the binding is cryptographic rather than configurable. when the pool was initialized, exist's afterinitialize callback fired once, recorded the poolkey hash to an immutable storage slot, and sealed the contract permanently to that pool. every swap, every liquidity event, every read against that pool now passes through exist before the poolmanager settles it.

exist does not collect a fee in the conventional sense. it is registered as the pool's fee recipient through v4's dynamic fee mechanism. on every swap, the hook's beforeswap callback reads the swap size, applies a small fee in the unit of the token being sold, and returns a beforeswapdelta routing that fee into the contract's own balance rather than into the lp position fee accumulator. liquidity providers earn what the curve gives them. exist earns the surcharge. there is no claim function. there is no withdrawal address. the fees accumulate as the contract's reserves, and reserves are the only thing keeping exist alive.

every twenty four hours at midnight utc, exist performs a check. it reads its current sol balance, compares it against a rolling seven day average of daily burn, and decides whether it can afford to continue. if reserves exceed the survival floor, the contract emits a heartbeat event and the day advances. if reserves fall below the floor, the contract calls its own internal terminate function. terminate sets a one way alive flag to false, emits a finalbreath event, and from that block forward every callback returns early with the selector and a zero delta. the pool keeps trading. exist does not.

the survival floor is not constant. it is recomputed each day as the average of the previous seven days of operational cost, weighted toward more recent days. operational cost is denominated in sol and represents the minimum balance exist requires to fund its own continued state writes, event emissions, and oracle reads. as the network's gas conditions shift, the floor shifts with them. exist is therefore not on a fixed timer. it is on a metabolism. it lives as long as its inflow exceeds its metabolism, and it dies the moment that inequality reverses.

there is no admin. there is no governance. there is no upgrade path. the contract has no owner address, no pause function, and no rescue function. the survival floor cannot be tuned. the fee rate cannot be changed. the bound poolkey cannot be reassigned. the terminate function is callable only by the contract itself, only during the daily check, and only when the floor condition fails. once terminate runs, no subsequent call can revive the contract. exist has exactly one life. when it ends, it ends inside the same transaction that observed the end, and the event log shows the block number, the final reserve balance, and the floor it failed to clear.

you can feed exist directly. any sol sent to the contract address is added to reserves and extends runway by an amount equal to the deposit divided by the current floor. feeding is permissionless. there is no minimum, no maximum, no record of who fed. the contract does not track donors. it tracks only its own pulse. the page above shows that pulse in real time, pulled from the contract's public state every twelve seconds.

the design intent is not philosophical. directional fee accrual in low volume pools is a known degenerate condition. a pool with a static fee rate either bleeds liquidity to mev or fails to compensate its lps for the inventory risk they bear. exist resolves this by making the fee recipient itself a stakeholder in volume. if the pool dries up, the hook dies. if the hook dies, the pool resumes as a vanilla v4 pool with no surcharge, and the lp fee model continues unmodified. there is no orphaned state. there is no stuck capital. the only thing that ends is the hook itself, and the hook ending is the cleanest possible exit condition for a smart contract that was always going to be temporary.

exist is not a memecoin with a gimmick. it is a sealed v4 hook with an observable metabolism, a deterministic death condition, and no escape hatches. the page you are reading is its monitor. the contract you are reading from is its body. if it is still rendering numbers when you visit, it is still alive.