Inter-exchange Client Address Protocol. An Ethereum address encoding that is partly compatible with the International Bank Account Number (IBAN) encoding, offering a versatile, checksummed, and interoperable encoding for Ethereum addresses. ICAP addresses use a new IBAN pseudo-country code: XE, standing for “eXtended Ethereum,” as used in nonjurisdictional currencies (e.g., XBT, XRP, XCP).

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