New Protocol Verifies Digital Transaction Intent
The open-source tool blocks unauthorized payment changes, addressing vulnerabilities in automated agent workflows.
Updated on Oct. 31, 2026 in Cybersecurity
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Violet Sky Security, a consultancy founded in 2011, began development in May 2026 on a new transaction-verification protocol called SPT-Txn. This open-source tool is designed to prevent unauthorized modifications to digital payments by verifying that transaction details match original approvals.
Why it matters
As organizations contend with high-stakes digital theft, the need to confirm that automated commands or human-authorized payments remain untampered with is critical. SPT-Txn provides a mechanism to lock transaction intent before execution.
The SPT-Txn gateway sees approximately 100 unique clones per fortnight. It functions by sealing payment approvals in short-lived cryptographic tokens without exposing personal data, checking the transaction against this token immediately before execution.
The players
Violet Sky Security
A cybersecurity consultancy and software developer shifting from advisory services to product-based security tools.
Rudi Coetzee
A cybersecurity architect with 31 years of IT experience who developed the SPT-Txn protocol.
The details
SPT-Txn works by recording authorized payment parameters and securing them within a cryptographic token—a digital string used to verify data integrity. The gateway intercepts real-time transaction requests and compares them against the stored token. If the destination, amount, or authorization status of the transaction differs from the original, the protocol blocks the execution to prevent unauthorized shifts in assets.
Timeline
2011: Violet Sky Security began operations.
December 2025: Rudi Coetzee moved to the Cayman Islands.
March 2026: Rudi Coetzee authored a working paper on security controls.
May 2026: Development of the SPT-Txn product began.
The Tech Race
The development of SPT-Txn follows the US$1.46 billion Bybit hack, highlighting the industry-wide scramble for stronger transaction integrity controls. The protocol aims to mitigate similar vulnerabilities by verifying the intent of both human and AI-driven agents.
Organizations currently using the open-source gateway can integrate the protocol to protect payment pipelines from modification. The company is now developing a paid commercial subscription and planning independent software audits.
The takeaway
The protocol represents an attempt to bridge the security gap between human intent and automated execution. Stakeholders should track the company's upcoming strategic relationships with audit firms to verify the software's effectiveness.
Further reading
Learn more about the latest innovations in Cybersecurity.
Source note: This article includes information reported by Cayman Compass.
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