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Title: Vaults Auction -> Vaults: `start_vault_rotation()` Vaults -> Vaults: `KeygenRequestResponse::make_request()` Vaults -> CFE: event `KeygenRequest()` CFE --> Vaults: `keygen_response()` Vaults -> Vaults: `KeygenRequestResponse()::handle_response()` if: Failed `bad_validators` Vaults -> Vaults: `abort_rotation()` else: Success `new_public_key` Vaults -> Vaults: `EthereumChain::start_vault_rotation()` end Vaults -> Vaults: `EthereumChain::make_request()` Vaults -> CFE: event `EthSignTxRequest()` CFE --> Vaults: `eth_signing_tx_response()` Vaults -> Vaults: `EthereumChain::handle_response()` if: Failed `bad_validators` Vaults -> Vaults: `abort_rotation()` else: Success `signature` Vaults -> Vaults: `request_vault_rotation(signature)` end: Vaults -> Vaults: `VaultRotationRequestResponse::make_request()` Vaults -> CFE: event `VaultRotationRequest()` CFE -> ETH: selected node `sign_and_broadcast_tx()` CFE -> CFE: witness `KeyChange` event on the contract. CFE --> Vaults: `vault_rotation_response()` NB: *Only if witness of `KeyChange` occurs* Vaults -> Vaults: `VaultRotationRequestResponse::handle_response()` Vaults -> Vaults: `EthereumChain::vault_rotated()` Vaults -> CFE: event `VaultRotationCompleted()`