> For the complete documentation index, see [llms.txt](https://oracle-free-dollar.gitbook.io/ofd/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://oracle-free-dollar.gitbook.io/ofd/stablecoin-bridges.md).

# 🌉Stablecoin bridges

The swap page allows you to swap other recognized USD stablecoins against OFD and back. Moving back into other stablecoins is only possible as long as there it some of the other stablecoin left in the bridge contract. Essentially, this pegs the OFD 1:1 to other stablecoins and helps stabilizing its value. In order to protect the Oracle Free Dollar from a crash of the connected stablecoins, the bridge contract is limited in time and volume. After a year the latest, it needs to be replaced with a new contract.

System participants should closely watch the amount of other stablecoins flowing in and out. Having a lot of outflow could be an indication that it is too cheap to mint OFD, i.e. implied interest rates being too low. Having large inflows could be an indication that going into OFD is too attractive and interest rates too high.


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