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A hub groups markets within the central pool. Each market is identified by both its hub and its asset. The same token in two hubs has two separate market balances.

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What stays separate

Each hub-asset market tracks its own available cash, supplied balance, debt, interest accrual, and protocol revenue. Its interest-rate curve and utilization ceiling also apply independently. For example, supplying USDC in one hub does not create a USDC supply balance in another hub. Select the intended hub when supplying, repaying, or withdrawing; using the same token does not join the two balances. A bad-debt write-off in the first market reduces claims in that market; the second market has separate accounting. This accounting boundary does not remove risks from the shared contracts or from holding the same token. See liquidations for how unrecovered debt affects suppliers.

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How spokes use hubs

A spoke lists the hub-asset markets its accounts can use. Supply and borrow caps belong to each spoke listing, so spokes using the same market can have different limits. Review both the market and the spoke when choosing where to supply or borrow.