EthereumClassic Block Explorer

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  • Updated at: 2019-03-27 16:25:39

ETC Explorer

ETC Explorer logo

Live Version:

Follow the project progress at: ETC Block Explorer Development

Local installation

Clone the repo

git clone

Download Nodejs and npm if you don't have them

Install dependencies:

npm install

Install mongodb:

MacOS: brew install mongodb

Ubuntu: sudo apt-get install -y mongodb-org

Populate the DB

This will fetch and parse the entire blockchain.

Setup your configuration file: cp config.example.json config.json

Edit config.json as you wish

Basic settings:

    "nodeAddr":     "localhost",
    "wsPort":       8546,
    "startBlock":   0,
    "endBlock":     "latest",
    "quiet":        true,
    "syncAll":      true,
    "patch":        true,
    "patchBlocks":  100,
    "bulkSize":     100,
    "settings": {
        "symbol": "ETC",
        "name": "Ethereum Classic",
        "title": "Ethereum Classic Block Explorer",
        "author": "Elaine",
        "rss": "",
        "reddit": "",
        "twitter": "",
        "linkedin": "",
        "github": "",
        "logo": "/img/explorer-logo.png",
        "copyright": "2019 © Ethereum Classic.",
        "poweredbyCustom": false,
        "poweredbyEtcImage": "/img/powered-by-etcexplorer-w.png",
        "poweredbyEtc": true,
        "useRichList": true,
        "useFiat": true,
        "miners": {
            "0xdf7d7e053933b5cc24372f878c90e62dadad5d42": "EtherMine",
            "0xc91716199ccde49dc4fafaeb68925127ac80443f": "F2Pool",
            "0x9eab4b0fc468a7f5d46228bf5a76cb52370d068d": "NanoPool",
            "0x1C0FA194a9d3B44313DCD849F3C6be6Ad270a0A4": "MiningPoolHub",
            "0x4750e296949b747df1585aa67beee8be903dd560": "UUPool",
            "0xef224fa5fad302b51f38898f4df499d7af127af0": "91pool",
            "0x0073Cf1B9230cF3EE8Cab1971B8DbeF21eA7B595": "2miners",
            "0x4c2b4e716883a2c3f6b980b70b577e54b9441060": "ETCPool PL",
            "0xd144e30a0571aaf0d0c050070ac435deba461fab": "Clona Network",
            "0x568f58bf1667504fdf5aa02d776c156f940178a5": "Whalesburg",
            "0x3b2d2613ad66d66ee0cb518aeeccc98e9e3b19c0": "private(0x3b2d2613)",
            "0x919973eb38844313dc31c41e140700d6e333f8d5": "private(0x919973eb)",
            "0xb205f337bad80e28351c7540b741c81470c4927f": "private(0xb205f337)",
            "0x232cad0429e653ab610fbcf7e7ebee2f05f28410": "private(0x232cad04)",
            "0x999c2944807874d3677ee3c6065c8a8a92721ac5": "",
            "0x39cd14977601184b7da518fd352261aad0cb9fd3": "91pool",
            "0xf35074bbd0a9aee46f4ea137971feec024ab704e": "Solo Mining Pools",
            "0xa97ed75172773ec705c2c78d999d3203199101bd": "epool",
            "0x58b3cabd0c5c777da2c1c4d4f7ecc8afe5674f20": "private(0x58b3cabd0)",
            "0x87cfd09c483fe65352456bb26c784a0e4c4ba389": "ArsMine",
            "0x5bc9ccbd3115cefb6f382d33e8ce2a0aba084da4": "private(0x5bc9ccbd3)",
            "0x4924414988feb1ee16e29298509f96317400eb57": "private(0x492441498)",
            "0xa9a926bed50dc038b20bb20de361e4c35aae51fc": "private(0xa9a926bed)",
            "0x0073cf1b9230cf3ee8cab1971b8dbef21ea7b595": "2miners",
            "0x004730417cd2b1d19f6be2679906ded4fa8a64e2": "2miners",
            "0x1c0fa194a9d3b44313dcd849f3c6be6ad270a0a4": "MiningPoolHub"
Name Explanation
nodeAddr Your node API RPC address.
wsPort Your node API WS (Websocket) port. (RPC HTTP port is deprecated on Web3 1.0 see
startBlock This is the start block of the blockchain, should always be 0 if you want to sync the whole ETC blockchain.
endBlock This is usually the 'latest'/'newest' block in the blockchain, this value gets updated automatically, and will be used to patch missing blocks if the whole app goes down.
quiet Suppress some messages. (admittedly still not quiet)
syncAll If this is set to true at the start of the app, the sync will start syncing all blocks from lastSync, and if lastSync is 0 it will start from whatever the endBlock or latest block in the blockchain is.
patch If set to true and below value is set, sync will iterated through the # of blocks specified.
patchBlocks If patch is set to true, the amount of block specified will be check from the latest one.
useRichList If useRichList is set to true, explorer will update account balance for richlist page.
useFiat If useFiat is set to true, explorer will show price for account & tx page. ( Disable for testnets )

Mongodb Auth setting.

Configure MongoDB

In view of system security, most of mongoDB Admin has setup security options, So, You need to setup mongodb auth informations. Switch to the built-in admin database:

$ mongo
$ > use admin
  1. Create an administrative user (if you have already admin or root of mongodb account, then skip it)
# make admin auth and role setup
$ > db.createUser( { user: "admin", pwd: "<Enter a secure password>", roles: ["root"] } )

And, You can make Explorer's "explorerDB" database with db user accounts "explorer" and password "some_pass_code".

$ > use explorerDB
$ > db.createUser( { user: "explorer", pwd: "<Enter a secure password>", roles: ["dbOwner"] } )
$ > quit()

Above dbuser explorer will full access explorerDB and clustor setting will be well used on monitoring the multiple sharding and replication of multiple mongodb instances. Enable database authorization in the MongoDB configuration file /etc/mongodb.conf by appending the following lines:


Restart MongoDB and verify the administrative user created earlier can connect:

$ sudo service mongodb restart
$ mongo -u admin -p your_password --authenticationDatabase=admin

If everything is configured correctly the Mongo Shell will connect and

$ > show dbs

will show db informations. and You can add modified from ./db.js:103 lines, add auth information and mongodb connect options.

mongoose.connect(process.env.MONGO_URI || 'mongodb://localhost/explorerDB', {
  useMongoClient: true
  // poolSize: 5,
  // rs_name: 'myReplicaSetName',
  // user: 'explorer',
  // pass: 'yourdbpasscode'

And explore it.


The below will start both the web-gui and sync.js (which populates MongoDB with blocks/transactions).

npm start

You can leave sync.js running without app.js and it will sync and grab blocks based on config.json parameters

npm run sync

Enabling stats requires running a separate process:

npm run stats

Enabling richlist requires running a separate process:

npm run rich

You can configure intervals (how often a new data point is pulled) and range (how many blocks to go back) with the following:

RESCAN=100:7700000 node tools/stats.js (New data point every 100 blocks. Go back 7,700,000 blocks).

Docker installation

Set nodeAddr in config.json to host.docker.internal

Run docker-compose up