f(x) Protocol vs Money On Chain: Stablecoin and leverage (2026)

Both protocols combine a stablecoin with a second token or position that carries more market risk, but their designs and networks are different. f(x) Protocol runs on Ethereum, mints fxUSD against stETH and WBTC, and offers fixed-leverage ETH and BTC positions. Under its v2.1 design, those positions can reach up to 7x long or 6x short. Its Liquidation Brake can rebalance a position near a typical liquidation point rather than closing it outright, but it does not remove the risk of losing money.

Money On Chain runs on Rootstock and uses Bitcoin as collateral for DOC, its dollar-pegged token. BPRO offers leveraged BTC exposure, with its holders absorbing volatility to support DOC. The project describes this risk-sharing model as aiming to avoid liquidations for DOC minters. Choose between them based first on what you want to hold and which chain you use: f(x) suits ETH and BTC position traders, while Money On Chain is centered on Bitcoin and DOC.

f(x) has a documented opening fee of 0.3% and describes normal funding fees as absent. A temporary funding cost can apply to xPOSITIONs if fxUSD remains below peg for too long, and rebalancing carries a small fee. Ethereum gas also applies to transactions. The project advises checking its fee documentation for other settings, so the listed opening fee should not be treated as the full cost of every use.

Money On Chain does not publish fee levels for minting, redeeming or swapping DOC, BPRO and MOC. Users should check the DApp or its documentation before confirming a transaction, and Rootstock network gas still applies. On published protocol fees, f(x) is easier to assess in advance; it is not possible to conclude that it is cheaper overall because Money On Chain’s fees are unknown and network costs differ. Neither protocol’s fees alone capture the financial risk of holding leveraged or stablecoin positions.

Both protocols have two audits listed, but the auditor names are not published in the information available here. f(x) has public contracts and references a security bounty program; Money On Chain points users to security and performance information. Check the projects’ audit reports and current security disclosures before depositing funds, and do not treat an audit count as a guarantee against loss.

The main risks differ with the designs. f(x) depends on smart contracts and oracles, and its own documentation acknowledges possible bad debt if rebalancing and liquidation fail. Any losses beyond its reserve fund can be shared among position holders. fxUSD may temporarily de-peg, and the protocol notes that recovery can depend partly on the underlying market rebounding. Money On Chain faces smart-contract and oracle risk, as well as the chance that a sharp Bitcoin decline stresses BPRO’s role in supporting DOC. In both cases, use only funds you can afford to lose.

Pick f(x) Protocol if you specifically want fixed-leverage ETH or BTC exposure, or want to use fxUSD and related pools on Ethereum. Its published 0.3% opening fee and no-normal-funding-fee policy offer more fee detail than Money On Chain publishes, but you still need to account for Ethereum gas, rebalancing costs and the protocol’s tail risks. Its design is more involved than a standard perpetual exchange, so understand how rebalancing and potential shared losses work before using it.

Pick Money On Chain if your priority is a Bitcoin-backed dollar token, leveraged BTC exposure through BPRO, or governance through MOC on Rootstock. Its longer operating history, which the project says dates to 2019, may matter to users comparing track records, but its fees are not published and its ecosystem is smaller than Ethereum’s. Neither is a direct substitute for the other: the better choice depends on your preferred chain, asset exposure and comfort with each protocol’s risk-sharing model.