# On-chain data you can build a business on.

> Voltfin is a verifiable blockchain data platform. We read data from the chains themselves, publish it with a receipt for every number, and give teams one place to turn it into dashboards, tables and reports they run on every day.

Markdown copy of https://voltfincrypto.com/about

## What we hold to

- **Every number has a receipt.** A figure names the dataset, its version, the row and the block behind it. If it cannot be traced, it is not shown.
- **Missing is never zero.** A value that could not be read is shown as missing, never filled in, rounded away or summed into a partial total.
- **Check it yourself.** Verify re-runs the reads in your browser, against public RPC endpoints, so you can check the result without trusting us.
- **No paid placement.** No ads, no order flow, no token. What a board shows is decided by the data.

## How it works

1. **Read from the chain.** Each token's totalSupply() is read from contract state at the last block of every UTC day, on every covered chain.
2. **Publish with receipts.** Each day becomes a versioned dataset in Voltfin Ground, with a receipt for every row.
3. **Model it once.** One ontology of chains, tokens, issuers and wallets, so questions are about objects, not tables.
4. **Build and operate.** Vantage dashboards, Strata tables and Folio reports in Voltfin Studio, every figure linked to its receipt.

## Questions

### What is Voltfin?

A verifiable blockchain data platform: verified on-chain datasets, and Voltfin Studio to build dashboards, tables and reports on them. Every number links to its receipt.

### Where do the numbers come from?

From Voltfin Ground: each token's on-chain totalSupply(), read at the last block of every UTC day and published as a dataset with a receipt for every row.

### Can I check a number myself?

Yes. Click any figure to open its receipt, or use Verify to re-run the reads in your browser.

### Do I need an account?

Not to explore: everything in the marketplace is open. Create a free account to save your own work in Studio.

### Which chains are covered?

Ethereum, Base, Arbitrum One, OP Mainnet, Polygon PoS, BNB Smart Chain, Avalanche C-Chain, Plasma and HyperEVM.