---
title: "Discussion on \"CTF Writeup: Gateway | Blockchain | CSS CTF 2026: Return of Nexus\" | Hashnode"
description: "Discussion on \"CTF Writeup: Gateway | Blockchain | CSS CTF 2026: Return of Nexus\". Description\n\nThe reboot has awakened an abandoned UPDC checkpoint guarding access to the Quantum Nexus Network. Its emergency gate still demands three proofs of clearance, but the officers who issued"
url: "https://hashnode.com/posts/ctf-writeup-gateway-blockchain-css-ctf-2026-return-of-nexus/6af26e57c91512e319693f60"
---

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# [CTF Writeup: Gateway | Blockchain | CSS CTF 2026: Return of Nexus](https://mollysohaney.hashnode.dev/ctf-writeup-gateway-blockchain-css-ctf-2026-return-of-nexus?utm_source=hashnode&utm_medium=feed)

Description The reboot has awakened an abandoned UPDC checkpoint guarding access to the Quantum Nexus Network. Its emergency gate still demands three proofs of clearance, but the officers who issued

1d ago · 7 min read · mollysohaney.hashnode.dev  
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-   [#ctf](https://hashnode.com/tag/ctf)
-   [#ctf-writeup](https://hashnode.com/tag/ctf-writeup)
-   [#write-up](https://hashnode.com/tag/write-up)
-   [#blockchain](https://hashnode.com/tag/blockchain)

## Written by

[Molly Sohaney](https://hashnode.com/@mollysohaney)

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