OZOliver Zehentleitnerinblog.technopathy.club·Sep 13 · 10 min readpicows in UNICORN Binance WebSocket API: Up to 2× the Throughput, Opt-In for NowUNICORN Binance WebSocket API (UBWA) has used websockets since day one. Since UBWA 2.16.0, you can switch a manager instance to picows, a Cython WebSocket implementation. For typical Binance messages 10
OZOliver Zehentleitnerinblog.technopathy.club·Jun 2 · 23 min readI Created 2013 Binance Order Books on Kubernetes with 2 Replicas in 25 Minutes — Then Stress-Tested the REST APIThis is not a theoretical architecture article. This is a practical infrastructure test. The goal was simple: Can I create all active Binance Spot and Futures order books as replicated Kubernetes inf72
OZOliver Zehentleitnerinblog.technopathy.club·May 5 · 11 min readBinance Fixed the IP Whitelist Gap. The Disclosure Process Is Still Broken.I wanted to re-open an old Binance API security issue. Not because I enjoy re-litigating old reports. Because the last thirteen days made the threat model painfully concrete. I found or stumbled into 61L
OZOliver Zehentleitnerinblog.technopathy.club·Apr 29 · 14 min readYour Binance DepthCache is rotting — here's the proof in 25 hoursA local Binance Spot order book can look healthy at the top and still be structurally wrong underneath. Not “a little bit noisy”. Not “slightly delayed”. Wrong in the way that only shows up when you s00
OZOliver Zehentleitnerinblog.technopathy.club·Apr 28 · 18 min readUBDCC Deep-Dive: Building a Trust Layer for Binance Order BooksTL;DR — UBDCC is not "Redis for Binance order books". It is an order book trust layer: every layer of the stack — UBWA, UBLDC, the cluster, the dashboard — exists to turn a stream of binary diff messa00
OZOliver Zehentleitnerinblog.technopathy.club·Apr 22 · 12 min readSecurity Warning: Fraudulent GitHub Repository Impersonating UNICORN Binance WebSocket APIUpdate (2026-04-22): Further analysis indicates that this fraudulent repository is likely one lure within a broader GitHub malware campaign.Across the currently confirmed set, multiple repositories sh00
OZOliver Zehentleitnerinblog.technopathy.club·Apr 21 · 6 min readPassing Binance Market Data to Apache Kafka in Python with aiokafkaNote (2026): CloudKarafka has discontinued their hosted Kafka service — a more up-to-date tutorial on Kafka alternatives is coming soon! Using a message queuing cluster like Apache Kafka is an excell00
OZOliver Zehentleitnerinblog.technopathy.club·Apr 20 · 10 min readWhen IP Whitelisting Isn't What It Seems: A Real-World Case Study from the Binance APIA case study on how Binance's listenKey design bypasses IP whitelisting, why Bugcrowd dismissed it, and what this teaches us about API security in 2025. Update (2026-04-20): This article was original20
OZOliver Zehentleitnerinblog.technopathy.club·Apr 20 · 10 min readWhy Your Binance Order Book Should Not Live Inside Your BotMost Binance bots start the same way. One process opens a WebSocket, pulls a depth snapshot, keeps a local order book in memory, and runs a strategy loop on top. For one bot, on one machine, this is f54L
OZOliver Zehentleitnerinblog.technopathy.club·Apr 16 · 10 min readYour Binance Order Book Is Wrong — Here's WhyIf you maintain a local Binance order book, there is a good chance it contains price levels that no longer exist on the exchange. Not because your code has a bug — but because Binance's documentation 00