TomoScan provides a user friendly, details and perfection-oriented user interface for TomoChain block explorer. From a user perspective, TomoScan brings TomoChain’s transparency to users, because all block, transaction, finality, smart contracts, DApp and token information are read from TomoChain and shown to users
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khaihkd Merge pull request #529 from khaihkd/master
 get block signer of 50 blocks per time & use url-join lib
Latest commit b5d5f83 Dec 17, 2018

TomoChain Explorer - Tomoscan

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Tomoscan is a BlockExplorer for TomoChain, built with VueJS, Nuxt and MongoDB. Tomoscan allows you to explore and search the TomoChain for transactions, addresses, tokens, prices and other activities taking place on TomoChain.

A demo instance connected to the TomoChain testnet is available at

Current Features

  • Browse blocks, transactions, accounts and contracts
  • View pending transactions
  • Upload & verify contract sources
  • Display the current state of verified contracts
  • Follow an address list
  • Responsive layout

Missing a feature? Please request it by creating a new Issue.

Usage notes

The explorer is still under heavy development, if you find any problems please create an issue or prepare a pull request.

Getting started



Copy .env files

cp client/.env.example client/.env

Build & up docker

docker-compose -f docker-compose-dev.yml up --build

The site will run at http://localhost:3000, server will run at http://localhost:3333

Environment variables

Client (in client/.env)


Server (in server/src/config/default.json)

cp server/src/config/default.json server/src/config/local.json
  "APP_ENV": "prod",
  "MONGODB": "localhost",
  "MONGODB_URI": "mongodb://localhost:27017/explorer",
  "redis": {
    "host": "localhost",
    "port": 6379,
    "password": null,
    "prefix": "TomoScan"

  "WEB3_URI": "",
  "WEB3_WS_URI": "wss://",
  "DEBUG_QUERY": false,

  "PORT": 3333,
  "DEBUG": "express:*",



  "CLIENT_URL": "http://localhost:3000/",
  "CMC_ID": 2570,