Jan Pleskač is a technical co-founder of Tropic Square. Company announcements document CTO and CEO roles, not uninterrupted current leadership or sole authorship of every part of TROPIC01.
Tropic Square's EPS Global partnership announcement of 19 February 2025 identifies Pleskač as CTO and co-founder. This records technical and founding roles at a particular time. A title attached to a historical statement should not be treated as today's job without checking newer announcements. [Tropic Square — EPS Global partnership, February 2025]
On 1 April 2025, Tropic Square announced Pleskač was taking over from John Sirianni, shifting focus from CTO duties toward strategy and product vision. It also credited Sirianni's contributions to the patent and TROPIC01 launch. A leadership change does not rewrite the previous team's work. [Tropic Square — Jan Pleskač leadership return, April 2025]
The 12 May 2026 announcement states that Pleskač is stepping down as CEO and retaining his relationship with the company as a shareholder. Ladislav Veselý is appointed interim CEO. An older invitation or quotation using the CEO title is therefore insufficient to claim Pleskač still runs the company. [Tropic Square — Leadership transition, May 2026]
The May 2026 announcement connects Pleskač with taking TROPIC01 from concept to volume production. Quoted co-founder Marek Palatinus refers to the engineering foundation created by Pleskač and the team. This supports a significant contribution, not a conclusion that he personally created every design, firmware component and security test. [Tropic Square — Leadership transition, May 2026]
The February 2025 EPS Global partnership covers secure programming, provisioning and distribution. The release also describes the partner's role in PKI infrastructure for authenticating TROPIC01. Pleskač's statements about design openness therefore do not remove the need to address the provenance, provisioning and integration of the physical chip. [Tropic Square — EPS Global partnership, February 2025]
Tropic Square's BTC Prague 2025 invitation announced Pleskač's talk for 20 June at 17:00 on open chips and the Bitcoin ecosystem. It establishes the announced programme, not a full transcript of what was actually said. A particular claim requires the recording itself or another direct source. [Tropic Square — BTC Prague 2025 invitation]
The main TROPIC01 repository describes a RISC-V core and SPECT cryptographic coprocessor and points to documentation by part number. It provides routes to firmware, errata and security reports. These specific materials are more informative for evaluating the chip than the founder's biography alone. [Tropic Square — TROPIC01 main documentation]
Tropic Square's GitHub organisation page warns that published repositories may not always exactly match shipped products: publication can lag and third-party rights restrict some parts. Read Pleskač's support for transparency together with the scope of published materials, the product version and a particular audit. [Tropic Square — Public repository scope and disclaimer]
For the clearest picture, read this entry together with Tropic Square, TROPIC01, SatoshiLabs. The reverse links also lead from Tropic Square.