Past Meetup

#3 Building a Toy Version of Etherscan in an Hour

This Meetup is past

10 people went


千代田区九段南1-5-6りそな九段ビル5F · Tokyo

How to find us

It is the upper floor of "RESONA BANK" / There are some find our "SIGN BOAD" near the Bldg. / The closest station from "KUDANSHITA-Sta."

Location image of event venue


Etherscan( among other block explorers is one of the important pieces of a blockchain application that allows us to analyze the data in the blockchain. In this workshop, we will welcome Jeff Wentworth of Curvegrid to build a toy version of Etherscan.
The programming language used will be Go (, with a small amount of HTML and Solidity. However, those familiar with other C-like languages should be able to follow along.
If you like, you can familiarize yourself with Go and a couple of key blockchain concepts ahead of time:
- A Tour of Go (English: (日本語:
- ERC-20 crypto token standard (
- Ethereum transaction events, English option: Technical Introduction to Events and Logs in Ethereum (
- Ethereum transaction events, 日本語:
*Beware that this is the hands on programming event. Bring your laptop with you. You will have the free access to our Wi-Fi at the venue.

19:00 Doors Open
19:30 Building a Toy Version of Etherscan in an Hour by Jeff Wentworth
21:00 Networking----Beer& Pizza!
22:00 End

Speaker: Jeff Wentworth, Co-founder of Curvegrid
Jeff Wentworth is a Co-Founder of Curvegrid, a blockchain tooling startup based in Tokyo, Japan. Curvegrid is building a blockchain application server that provides all the critical infrastructure you need to build a DApp on one or more blockchain platforms, so you can focus on crafting your vision.

// Windows prereq instructions
- [Cygwin](
- [git](
- [Go](
- [go-ethereum](

// Mac prereq instructions
- [Homebrew](
- [git](
- [Go](
- [go-ethereum](

This event will be primarily in English.

1000JPY cash only

This event is cross-posted in connpass.
connpass URL: