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Glossary

ERC-20

The token standard for assets on the Ethereum blockchain, used by USDT, USDC and most stablecoins.

Last updated: June 2026

ERC-20 is the standard that defines how tokens behave on the Ethereum network. Major stablecoins such as USDT and USDC are available as ERC-20 tokens.

ERC-20 transfers are highly compatible but can carry higher gas fees than networks like Tron, so many users pick a cheaper network for routine card top-ups.

Related terms

  • USDT (Tether)The most widely used US-dollar stablecoin, commonly used to fund crypto cards because its value stays near $1.
  • USDC (USD Coin)A regulated US-dollar stablecoin issued by Circle, an alternative to USDT for funding crypto cards.
  • TRC-20The token standard for assets on the Tron blockchain, a popular low-fee network for sending USDT.
  • Gas FeeThe network fee paid to process a blockchain transaction, varying by chain and congestion.

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