Smart Contracts
CST Token

CST Token

CST is Coset's ERC20 token. It is designed to work well with x402 by supporting EIP-3009 (gas-abstracted transfers).

You can find the deployed address on the Contracts List.

Basics

  • Name: Coset
  • Symbol: CST
  • Decimals: 6
  • Initial supply: 1,000,000 CST minted to the initial owner at deployment

Why EIP-3009 matters

Coset uses EIP-3009 so a transfer can be authorized via an off-chain signature and executed on-chain by someone else (e.g. a relayer / Coset node).

The token supports:

  • transferWithAuthorization(...)
  • receiveWithAuthorization(...) (payee must be the caller)
  • cancelAuthorization(...)
  • authorizationState(authorizer, nonce)

Notes:

  • Each authorization uses a nonce and a [validAfter, validBefore] time window.
  • A nonce can be used only once (used or canceled).

EIP-712 / permit helpers

The CST token also exposes standard EIP-712 metadata through the underlying permit implementation.

  • permit(...) (EIP-2612)
  • version() (returns the EIP-712 version string)
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