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Logger

utility
0x7b6556b40a5a...f4445986239c
FrontierDecompiled
Deployed October 1, 2015 (10 years ago)Block 319,519

A minimal event-logging contract with a single function log(uint256) that emits MyEvent. Compiled with soljson v0.1.2, optimizer off.

Key Facts

Deployment Block
319,519
Deployment Date
Oct 1, 2015, 10:46 PM
Code Size
147.0 B
Gas at Deploy
55,141
Transactions by Year
20151

Description

One of the simplest possible Solidity contracts; a single function that emits an event with a uint256 parameter. Deployed during the Frontier era by a developer (0xfd2605a2) who deployed two other unverified contracts on the same day, likely experimenting with Solidity events and logging.

Source Verified

SolidityExact bytecode match(147 bytes)
Compiler: soljson

Compiled with soljson-v0.1.2+commit.d0d36e3 optimizer OFF. Full creation bytecode match (147 bytes). SHA-256: 97ddf8b10672c77afbd8e8b8961f85e8d3c474dafd1a2e0ee4f6763eceb1d99b

Heuristic Analysis

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

Detected Type: utility

Frontier Era

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

Block span: 01,149,999
July 30, 2015March 14, 2016

Bytecode Overview

Opcodes147
Unique Opcodes62
Jump Instructions6
Storage Operations1

External Links