EVM block explorer & blockchain indexerYour blockchain.
In plain sight.

Search blocks, transactions, tokens and contracts on your own chain, under your own name.

For private networks, public chains and the archives they leave behind.

The published FSNEX explorer, with its blue wordmark, search banner, network summary cards, and side-by-side block and transaction lists.
FSNEX · The Fusion explorerLive at fsnex.net
Open explorer (opens in a new tab)

From the experience
behind FSNEX.

01 / COMPATIBILITYEVM networks
02 / IDENTITYYour chain. Your branding.
03 / CONTINUITYLive data & historical records

Who it's for

Private networks, public chains and chains that have shut down

The same indexer and explorer run on a permissioned network, a busy public chain or a backup of a chain that no longer exists. Only the configuration differs.

01

Private & enterprise networks

Your team can look up transactions without querying a node by hand. The explorer can run inside your network, offline if needed.

Private EVM network explorer Visibility for your organisation
02

New & growing EVM chains

A public explorer with your chain's name on it, where users check their transactions and tokens.

New EVM chain explorer A front door to your ecosystem
03

Historical blockchain archives

If a chain's infrastructure goes away but a node backup survives, people can still look up their old transactions. FSNEX does this for Fusion.

Blockchain archive explorer A useful life beyond the last block

The product

An EVM block explorer for your network

A configurable blockchain indexer collects and organises on-chain data. The explorer makes it searchable for your users, while a read-only API gives developers access to the same indexed records.

See it on a real network
01

Follow the transaction

Look up blocks, addresses and transaction hashes. Inspect transfers, fees, status and the events behind each transaction.

02

Tokens and smart contract verification

Explore token activity and contract details. Developers can upload Solidity or Vyper source and the explorer checks it against the deployed bytecode, compiling with the official solc and Vyper releases.

03

Full history or the latest blocks

Keep everything from genesis, or only recent blocks to limit storage. The BNB explorer keeps about the last 400,000.

04

Blockchain data API

A read-only API makes indexed records available beyond the explorer. Retained raw data supports new decoding without fetching it all again. Read the API docs (opens in a new tab)

Under the hood

.NET 10 / PostgreSQL / Blazor WebAssembly

See it for yourself

Try it on two chains

One live chain and one archive, both running the same software.

FSNEXFusion

Historical archive

Fusion, archived

The original FSNEX, rebuilt. Every recovered Fusion block is searchable, from genesis on.

15,130,081 blocks · June 2019 to October 2025Open FSNEX (opens in a new tab)
bnb.BlockGaze.BNB Smart Chain

Live network demonstration

Live BNB Smart Chain

Indexes new blocks as they arrive and keeps about the last 400,000.

Latest ~400,000 blocks · a new block every ~0.45 sOpen BNB explorer (opens in a new tab)
From the archiveFSNEX / Original interface
The original FSNEX explorer, with its blue wordmark, search bar and side-by-side block and transaction tables. Historical screenshot, not current network data.

The original FSNEX, before the rebuild.

Where it comes from

It started with one chain.
And a reason to keep it.

FSNEX began as an explorer for the Fusion blockchain, built by Alg Ore (opens in a new tab). When the chain's public infrastructure went away, the need to read its history remained.

Rebuilding FSNEX became an opportunity to make the explorer adaptable to other EVM networks, from active public chains to private deployments and historical archives.

BlockGaze now powers FSNEX's fully indexed Fusion archive and the BNB Smart Chain explorer.

Read the Fusion recovery case study

How it works

From first conversation to launch

Before any work starts, we agree on what gets built, when, and who does what.

  1. Review your network

    We review your RPC interface, network rules and any custom transaction or token types, along with the historical data available to index.

  2. Agree on the scope

    We define branding, retained history, hosting and support needs, then agree on the work, pricing and timeline for your deployment.

  3. Configure and index

    We configure the explorer for your chain, index the agreed data and check the results against the source. We tell you which blocks are covered.

  4. Launch and operate

    We make the explorer available to your users and keep it maintained afterwards, wherever it runs.

Choose where it runs

We host it, or you do

Hosted by BlockGaze

Let us host and run your explorer and indexer, including monitoring, updates and backups. You provide access to the chain's data and tell us how the explorer should represent your network.

On your infrastructure

Run the explorer and indexer in your own environment while we keep the software maintained and supported. It can run entirely offline when the chain data is available locally.

Setup, maintenance and support

How pricing works

Your deployment starts with a one-time setup fee and continues with a subscription. When we host, the subscription includes hosting. Everything is scoped around your network, so you know what is included before work begins.

Initial deployment

Indexing your chain, applying your branding, checking the indexed data against your node or backup, and going live.

Ongoing subscription

Product updates, maintenance and standard support. If something we built doesn't work as agreed, fixing it is covered, including features built just for you.

Support

Standard support is included. If you need faster replies, we can agree priority support with set hours and response times.

Anything outside the agreed scope is quoted first, and work only starts once you approve it.

Not sure which setup fits?

Discuss your deployment

Before we talk

What chain teams usually ask

Will it work with our blockchain?

BlockGaze is built for EVM-compatible networks. Fusion and BNB Smart Chain are the current examples. We'll review your RPC interface, network rules and any custom transaction or token types before agreeing on a deployment.

Can we use our own branding?

Yes. The explorer supports a chain-specific identity, including its name and colour palette, so it reads as part of your network rather than a third-party site.

Who hosts and maintains the explorer?

BlockGaze can host and operate the explorer, or your team can run it on your infrastructure. Either way, the subscription keeps the software maintained. Who handles updates, monitoring, backups and node or RPC access is settled before launch.

What does preserving an inactive chain require?

It starts with an available data source: a surviving node, a usable backup or recoverable chain data. We assess what can be recovered.

Do we need to store the entire blockchain history?

No. A deployment can retain a rolling window of recent activity or index the available historical data. The BNB Smart Chain demo shows limited retention; FSNEX shows a fully indexed recovered archive. The right approach depends on your users, data availability and storage budget.

How long does a deployment take?

It depends on the network. A standard EVM chain needs less work than one with custom transaction types, recovered archive data or private infrastructure. Once we've reviewed your RPC interface and requirements, the timeline is set out together with the scope.

How is a deployment priced?

A deployment has a one-time setup fee and a subscription. When we host, the subscription also covers infrastructure and operations. Pricing reflects your chain's activity, retained history, custom integration and support needs, and you'll have a quote before any work begins.

Does the subscription include bug fixes?

Yes. If something we delivered doesn't work as agreed, fixing it is part of the subscription, including features built specifically for your deployment, whether we host it or you do. New features are quoted separately.

Your network, next

Let's take a look
at your chain

Launching a network, replacing an explorer, or preserving a piece of blockchain history? Tell us what you have in mind.

Discuss your network

A chain name, its current status and what you need are enough to start.

Prefer a direct message? X (opens in a new tab) · LinkedIn (opens in a new tab)