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Deployed August 12, 2017 (8 years ago)Block 4,150,283
A minimal proxy wallet deployed by exchange and custodian factories for hot wallet deposit address infrastructure.
Key Facts
Transactions by Year
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Description
UserWallet is a lightweight proxy contract deployed by factory contracts for exchange and custodian hot wallet systems. Each instance delegates calls to a shared implementation, making it the single most-deployed bytecode in Ethereum history with over 1.5 million instances. Factory-deployed at scale from 2017 onward, these contracts served as deposit addresses for crypto exchanges managing per-user inbound ETH. The pattern separates deposit address logic from the implementation contract, allowing upgrades without redeploying individual wallets.
Source Verified
SolidityEtherscan verified
Compiler: v0.4.11
Spurious Dragon Era
Continued DoS protection. State trie clearing.
Block span: 2,675,000 — 4,369,999
November 22, 2016 — October 16, 2017
Bytecode Overview
Opcodes545
Unique Opcodes96
Jump Instructions27
Storage Operations3