XChainModifyBridge

(Requires the XChainBridge amendment )

The XChainModifyBridge transaction allows bridge managers to modify the parameters of the bridge. They can only change the SignatureReward and the MinAccountCreateAmount.

This transaction must be sent by the door account and requires the entities that control the witness servers to coordinate and provide the signatures for this transaction. This coordination happens outside the ledger.

Note

You can't modify the signer list for the bridge with this transaction. The signer list is on the door account itself and is changed in the same way signer lists are changed on accounts (via a SignerListSet transaction).

Example XChainModifyBridge JSON

{
  "TransactionType": "XChainModifyBridge",
  "Account": "rhWQzvdmhf5vFS35vtKUSUwNZHGT53qQsg",
  "XChainBridge": {
    "LockingChainDoor": "rhWQzvdmhf5vFS35vtKUSUwNZHGT53qQsg",
    "LockingChainIssue": {
      "currency": "XRP"
    },
    "IssuingChainDoor": "rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh",
    "IssuingChainIssue": {
      "currency": "XRP"
    }
  },
  "SignatureReward": 200,
  "MinAccountCreateAmount": 1000000
}

XChainModifyBridge Fields

Field	JSON Type	Internal Type	Required?	Description
`Flags`	Number	UInt32	Yes	Specifies the flags for this transaction.
`MinAccountCreateAmount`	Currency Amount	Amount	No	The minimum amount, in XRP, required for a `XChainAccountCreateCommit` transaction. If this is not present, the `XChainAccountCreateCommit` transaction will fail. This field can only be present on XRP-XRP bridges.
`SignatureReward`	Currency Amount	Amount	No	The signature reward split between the witnesses for submitting attestations.
`XChainBridge`	XChainBridge	XChain_Bridge	Yes	The bridge to modify.

XChainBridge Fields

Field	JSON Type	Internal Type	Required?	Description
`IssuingChainDoor`	String	Account	Yes	The door account on the issuing chain. For an XRP-XRP bridge, this must be the genesis account (the account that is created when the network is first started, which contains all of the XRP).
`IssuingChainIssue`	Issue	Issue	Yes	The asset that is minted and burned on the issuing chain. For an IOU-IOU bridge, the issuer of the asset must be the door account on the issuing chain, to avoid supply issues.
`LockingChainDoor`	String	Account	Yes	The door account on the locking chain.
`LockingChainIssue`	Issue	Issue	Yes	The asset that is locked and unlocked on the locking chain.

Transaction Flags

In addition to the universal transaction flags that are applicable to all transactions, you can specify this flag:

Flag Name	Flag Value	Description
`tfClearAccountCreateAmount`	`0x00010000`	Clears the `MinAccountCreateAmount` of the bridge.