StkBNBOracle

The currently registered BNB mainnet StkBNBOracle is an uncapped V1 transparent proxy, not an instance of the capped repository-main source.

Checked block	Proxy	Implementation
118367342	0xdBAFD16c5eA8C29D1e94a5c26b31bFAC94331Ac6	0xA7C432c50D310c805c8342488921A108b585397F

The implementation constructor is:

constructor(
    address stakePool,
    address stkBNB,
    address resilientOracle
)

getUnderlyingAmount() reads the StakePool exchange-rate structure, rejects a zero pool-token supply, and returns BNB per stkBNB. getPrice(stkBNB) multiplies that amount by the ResilientOracle BNB price.

The V1 implementation exposes immutable STAKE_POOL, CORRELATED_TOKEN, UNDERLYING_TOKEN, RESILIENT_ORACLE, and NATIVE_TOKEN_ADDR getters. It does not expose the V2 snapshot/growth setters.

The StkBNBOracle.sol file at v2.16.0 has the newer nine-argument capped V2 constructor. Do not use that ABI for the proxy above unless a later onchain implementation upgrade proves it applies.