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Tokens & Apps · ERC-20 from scratch · 2026Verified on Sepolia

StableX

An ERC-20 built without OpenZeppelin core: capped supply, role-based minting and USDC-style blacklisting.

GitHub
Implementation
Zero OZ core
Access
2-role model
Tests
31 total
01  The problem

Stablecoin-style tokens need more control than a plain ERC-20 (minting authority, freezing and supply caps) without giving one key total power.

A custom ERC-20 written from scratch, with two separate role mappings and a deployer that holds no privileges after deployment.

02  How it works
1234userOwnercontractStableXuserHoldersuserMINTERuserBLACKLISTER
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03  What I built
  1. 01A hard-capped supply with separate MINTER and BLACKLISTER roles.
  2. 02Blacklist checks on sender, receiver and operator in transferFrom.
  3. 03Infinite allowances that are never decremented, saving gas for integrations.
  4. 0431 unit, fuzz and invariant tests, with a documented comparison against OpenZeppelin.
06  Verify it on-chain
StableX
Sepolia
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