26 lines
821 B
Markdown
26 lines
821 B
Markdown
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# Messages
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In this section we describe the processing of the crisis messages and the
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corresponding updates to the state.
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## MsgVerifyInvariant
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Blockchain invariants can be checked using the `MsgVerifyInvariant` message.
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+++ https://github.com/cosmos/cosmos-sdk/blob/v0.40.0-rc7/proto/cosmos/crisis/v1beta1/tx.proto#L14-L22
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This message is expected to fail if:
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* the sender does not have enough coins for the constant fee
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* the invariant route is not registered
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This message checks the invariant provided, and if the invariant is broken it
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panics, halting the blockchain. If the invariant is broken, the constant fee is
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never deducted as the transaction is never committed to a block (equivalent to
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being refunded). However, if the invariant is not broken, the constant fee will
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not be refunded.
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