ETH / PRINTHD
fee 0%- Swap ETH → PRINTHDno liquidity at the current price
- Swap PRINTHD → ETHno liquidity at the current price
- Add, then remove liquiditycame back whole
pool 0x56e4bbf13b80b6c04eea815b756703723d858f8c0a8f9dcf1595843d5286aebc
Reading the hook.
The address, the bytecode, then a swap each way through its pool. A few seconds.
6 pools use this hook, the first one 31 d ago.
The address enables before swap returns delta, after swap returns delta. The hook is allowed to take; the next two checks measure whether it does.
No pool with liquidity to swap through yet.
Liquidity added and removed in the same block came back whole.
A fixed fee of 0%, written in the pool key.
Owned by 0x4d1BbAe900993F8E40005B64bFb54ed97F7F478e. Owner-style functions: setFactory, transferOwnership.
Not a proxy, no DELEGATECALL, no SELFDESTRUCT.
Each callback refused a call that did not come from the PoolManager.
6 pools over 30 days.
Measured at block 93,175,331. A hook with an owner or a dynamic fee can behave differently later; scan again before a large trade.
A v4 hook's permissions are the last fourteen bits of its address. The PoolManager calls only what they switch on.
A small swap each way and a liquidity round trip, run through the PoolManager and this hook inside a call that is never sent. The pool fee is expected; anything else missing is the hook.
pool 0x56e4bbf13b80b6c04eea815b756703723d858f8c0a8f9dcf1595843d5286aebc
Selectors found in the dispatcher, named from the public signature database. Red ones are what an owner usually keeps for itself.