[{"type":"report","id":"BLC-STUDY-0380","title":"Count leading zeros (CLZ) opcode","author":[{"literal":"Vectorized"},{"literal":"Georgios Konstantopoulos"},{"literal":"Jochem Brouwer"},{"literal":"Ben Adams"},{"literal":"Giulio Rebuffo"}],"issued":{"date-parts":[[2025]]},"publisher":"Vectorized , Georgios Konstantopoulos , Jochem Brouwer , Ben Adams , Giulio Rebuffo","URL":"https://eips.ethereum.org/EIPS/eip-7939","note":"Rights status: Official external source only. Not a licence to republish the paper."}]