Convert an Ethereum address to its EIP-55 checksummed form. Input can be all-lowercase, all-uppercase, or mixed. The checksum capitalizes hex letters based on keccak256 of the lowercase address — for example 0xfb6916095ca1df60bb79ce92ce3ea74c37c5d359 becomes 0xfB6916095ca1df60bB79Ce92cE3Ea74c37c5d359 .
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marduc812
2026