AdminCheck

program

0x49efab3940f7...492fd482c595

FrontierContract #5,553Exact Bytecode MatchEdit this contract

Deployed December 22, 2015 (10 years ago)Block 732,572

A test contract that checks if the caller matches a hardcoded admin address, with kill and get functions.

Frontier EraVerified Source

Historical Significance

Part of a series of iterative prototypes by a prolific Frontier-era developer. Shows the progression from simple storage to admin-gated functions, a pattern that evolved into multi-party escrow contracts with 72 production instances.

Context

Deployed in late December 2015 during the Frontier era. Developers were learning Solidity patterns like access control through hardcoded address comparisons, before modifiers and OpenZeppelin became standard.

Key Facts

Deployer

0x8b9346...73766e

Deployment Block

732,572

Deployment Date

Dec 22, 2015, 09:21 PM

Code Size

163.0 B

Gas at Deploy

61,157

Transactions by Year

20152

Deployment Transaction: 0x3077dad8438f64b5...1800cef0651ed566

Description

A small test contract with three functions: kill() to selfdestruct, get() to return the owner address (always zero since no constructor sets it), and test() which returns true if the caller matches a hardcoded admin address (0x8b9346aa...).

This was a learning exercise by a developer who deployed over 400 contracts between December 2015 and May 2016. It represents the second step in their development progression, after a simple key-value Store prototype. The hardcoded admin check pattern seen here became a core feature of their later multi-party escrow contracts.

The contract was selfdestructed shortly after deployment.

Source Verified

SolidityExact bytecode match(163 bytes)

Compiler: soljson

View verification proof

Exact bytecode match (init + runtime). 163 bytes creation code, no constructor args. Contract is selfdestructed.

Heuristic Analysis

The following characteristics were detected through bytecode analysis and may not be accurate.

Detected Type: program

Frontier Era

The initial release of Ethereum. A bare-bones implementation for technical users.

Block span: 0 — 1,149,999

July 30, 2015 — March 14, 2016

Bytecode Overview

Opcodes163

Unique Opcodes63

Jump Instructions5

Storage Operations3

Verified Source Available

Source verified through compiler archaeology and exact bytecode matching.

View Verification Proof

Show source code (Solidity)

contract T {
    address owner;

    function kill() { suicide(owner); }

    function get() returns (address) { return owner; }

    function test() returns (bool) {
        return msg.sender == 0x8b9346aa412b52954b5138dbb72adab97273766e;
    }
}

External Links

Etherscan Verified Source (if any)

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