XRPL Confidential MPT Feature Passes QA Testing with Full Cryptographic Coverage

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A QA test report dated September 22, 2026, documents results for Confidential Transfer (XLS-0096), a new feature built on top of XRPL's Multi-Purpose Tokens. The feature addresses privacy shortcomings of standard MPTs by storing token balances as ElGamal ciphertexts and validating every state change using zero-knowledge proofs, keeping amounts confidential yet verifiable on-ledger. Testing was conducted by engineer sgramkumar on a GitLab CI runner connected to the xrpld devnet, covering all five new transactors: Convert, Send, MergeInbox, ConvertBack, and Clawback. The test suite verified cryptographic correctness, balance conservation, issuance control flags, auditor mirror integrity, and resistance to adversarial inputs such as bad proofs and stale-proof replay attacks. Confidential MPT's compatibility with related XRPL features including Batch, Permission Delegation, and Sponsored Fees was also confirmed during the evaluation.

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