XRP Ledger developer Vito Tumas said new security work on the XRP Ledger is being expanded to cover upcoming native DeFi features, as the network prepares financial tools that could handle greater economic value and require stronger safeguards.
In the second article of the XRP Ledger Formal Verification Series, Tumas said the work with Common Prefix is moving from XRPL’s long-running Payment Engine to newer features such as Single Asset Vault and the Lending Protocol.
The change means security checks will be built into these protocols from the start, rather than reviewed only after development is largely complete.
Tumas noted that the team completed an exploratory phase earlier this year to define the technical scope and strategy, clearing the way for the formal verification work to move into its next stage.
XRPL tightens safeguards for native DeFi
Tumas said the XRP Ledger faces a different security test, as its DeFi features are built into the network’s core infrastructure rather than mainly running through separate smart contracts.
That makes accuracy more important, because a flaw in a native feature could have wider consequences than a bug in a separate application.
For Single Asset Vault and the Lending Protocol, that focus is critical because repeated calculations need to stay precise and small rounding errors cannot be allowed to compound over time, according to Tumas.
Testing alone leaves gaps
Tumas said regular software testing still matters, but it cannot cover every possible situation a DeFi protocol may face.
Formal verification adds another layer by using mathematical models to check whether a system can behave outside its intended rules. In simple terms, it is meant to prove that a feature works as designed, rather than only testing selected examples.
Early modelling reveals hidden risks
Tumas said the work with Common Prefix has already identified edge cases that normal testing did not catch, showing why the process is being added earlier in development.
The method can also create a reference model that lets engineers compare expected behaviour with the actual XRPL implementation, helping spot differences before features are deployed.
AI could strengthen future blockchain security
Tumas also said AI and formal verification could become complementary tools for securing future blockchain protocols, with AI helping identify new attack patterns while formal verification proves whether protocol designs follow their specifications.
Proofs may support future upgrades
Tumas said formal verification could eventually help XRPL validators assess new amendments with more confidence by giving them clearer technical evidence before activation.
As XRPL expands native DeFi, the work points to a broader effort to make security claims measurable and proven, rather than relying only on testing or developer assurances.
