Definition
Token-2022 is a successor token program on Solana that extends the classic SPL Token spec with optional extensions: transfer fee, non-transferable, interest bearing, permanent delegate, confidential transfer, and more. Each mint declares which extensions it uses when created.
Token-2022 is powerful for utility tokens that need protocol-level features, but not every DEX aggregator and wallet supports every extension. For standard meme coins, the classic SPL Token program is usually the safer default.
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