# Payments and fintech: Settle where the coin is really issued

> Choose the chains and tokens to support from where native supply sits, avoid bridged copies, and tie each settlement figure to a block.

Markdown copy of https://voltfincrypto.com/use-cases/payments-fintech

Pick chains and tokens from where native supply sits, avoid bridged copies the issuer does not redeem, and tie each settlement figure to a block.

Live example: [Base: native and bridged stablecoins, contract by contract](https://voltfincrypto.com/chains/base/stablecoins)

## Route on facts, not on tickers.

A token with the right ticker is not always the issuer's token. Bridged copies circulate under the same symbol, and only native supply is issued and redeemed by the issuer.

Voltfin shows, chain by chain, which contracts are native, how much each holds and how that is changing, so product and treasury decide on the same numbers.

Finance can tie each figure in a settlement report to the block it was read at.

## Workflows

### Choose the chains

**The problem.** Every new chain costs integration and liquidity. Supporting the wrong one strands users on thin or bridged supply.

**With Voltfin.** Native USD and EUR supply on each of 9 chains, with the 30-day change, to rank chains by where a coin really lives.

- **Supply by chain.** Native USD supply on each chain, coin by coin.
- **Momentum.** The 30-day change by chain, to see where supply is growing.
- **EUR beside USD.** Euro supply from the same reads.

Live example: [Native stablecoin supply by chain](https://voltfincrypto.com/stablecoins)

### Native or bridged

**The problem.** The same symbol can be the issuer's coin or a bridged copy. Accepting the wrong one adds a bridge to your redemption path.

**With Voltfin.** One chain's stablecoins, contract by contract, with native and bridged apart and the issuer of each.

- **Canonical contracts.** The issuer's own contract on each chain.
- **Bridged copies.** Every bridged version, labelled and kept apart.
- **Supply per contract.** How much each contract holds, at a pinned block.

Live example: [Ethereum, contract by contract](https://voltfincrypto.com/chains/ethereum/stablecoins)

### Euro corridors

**The problem.** Euro payment flows need euro liquidity, which is spread thinly across issuers and chains.

**With Voltfin.** A euro coin's native supply on each chain, with its 30-day change, to size a euro corridor before you build it.

- **Per chain.** Where the coin's euro supply is natively issued.
- **Momentum.** Whether that supply is growing, chain by chain.
- **Bridged apart.** Bridged copies listed on their own.

Live example: [EURC across chains](https://voltfincrypto.com/stablecoins/eurc)

## The rules behind it

Short summaries for orientation, not legal advice.

- **GENIUS Act** (United States): Defines payment stablecoins and who may issue them, with one-to-one reserves and monthly reserve reports. [Source](https://www.govinfo.gov/app/details/PLAW-119publ27)
- **MiCA, e-money tokens** (European Union): A single-currency stablecoin is an e-money token, issued only by a licensed credit or e-money institution. [Source](https://eur-lex.europa.eu/eli/reg/2023/1114/oj)

## Next on the plan

- Settlement-wallet balances over time