Radisav Cojbasic (@radi_cojbasic) — Twitter Score 21 out of 1000

Radisav Cojbasic is a co-founder and former chief executive of Irreducible, a cryptographic-computing company that built hardware-and-software solutions for faster and cheaper zero-knowledge proof generation, which shut down in November 2025. Radisav Cojbasic's Twitter Score is 21 out of 1000 as of August 2026, ranking #47,117 (top 10%) among 485,005 tracked accounts.

Radisav Cojbasic co-founded Irreducible, formerly known as Ulvetanna, with a focus on accelerating zero-knowledge proof generation through co-designed hardware and software. The company raised a $15 million seed round in December 2022, co-led by Bain Capital Crypto and Paradigm with participation from Jump Crypto, per the company's announcement. Irreducible followed that with a $24 million Series A announced in January 2025, again co-led by Paradigm and Bain Capital Crypto, with additional support from Fenbushi Capital, L2 Iterative Ventures, and Robot Ventures.

Radisav Cojbasic announced on X that Irreducible had shut down and that he was no longer in crypto. The company confirmed the closure on November 12, 2025, noting it would relicense its Binius64 software following the shutdown. Radisav Cojbasic's account has accumulated 612 followers as of August 2026 and 145 posts on the platform, and has been mentioned by 9 accounts a total of 11 times.

Who follows Radisav Cojbasic on X?

The accounts that follow Radisav Cojbasic include 61 founders, 27 angel investors, 8 influencers and 2 VCs, among them Fred Ehrsam, Georgios Konstantopoulos, Tarun Chitra, Mario Nawfal, Charlie and Zooko.