Move for Solidity Developers: Token Standard II — Advanced Fungible Token Extensions

This report compares advanced fungible token extension approaches across Solidity, Sui Move, and Aptos Move, detailing how each platform implements features such as pausing, blacklisting/whitelisting, and fee-on-transfer: Solidity relies on contract inheritance and established libraries (e.g., OpenZeppelin) for extensibility; Sui offers a dual model with system-level regulated coins (sui::coin) using DenyCapV2 and epoch-based deny lists plus a programmable sui::token TokenPolicy with ActionRequest enforcement; and Aptos uses the Fungible Asset (FA) standard with Metadata objects, capability Refs (MintRef, TransferRef, etc.), and dispatchable hooks for deposit/withdraw to enable custom behavior. The report emphasizes capability-driven access control, differences in enforcement semantics (including epoch delays on Sui), the hot-potato policy pattern, and security considerations such as metadata validation and Ref integrity.