abi4

ARC-4 Selector Oracle

SHA-512/256 method selector generator & reverse lookup — powered by abi4

Quick Compute ▼

▶ Compute

Selector:

8aa3b61f

Full hash:

// Library usage
import { selector, hash } from 'abi4';

selector('add(uint64,uint64)uint128')  // => '8aa3b61f'
hash('add(uint64,uint64)uint128')     // => full SHA-512/256 hex

Target Selector

Enter 4-byte (8 hex char) selector

Dictionary Words

Words to combine into method names. The engine tries each word alone, plus multi-word combos joined with _ or camelCase.

Max words: Join style:

snake_case camelCase direct

Exact Method Names

Specific full method names to also try (in addition to dictionary combos).

Method Names

Types

Argument Types

Min args: Max args:

Return Types

Signatures: 0

Collisions: 0

Time: —

🔍

Collisions only

Selector

Method Signature

Configure & Generate

Select method names, argument types, and return types above, then hit Generate.
Selectors are the first 4 bytes of SHA-512/256(signature).