https://qeryx.com/guides Verification-first guides: check a safety number, read a handshake, verify a Bell binding — instruments you run yourself. en https://qeryx.com/guides/understand-the-handshake qeryx:understand-the-handshake:v1.0 Fri, 17 Jul 2026 00:00:00 +0000 tutorial What actually happens in the second before your first message sends: two key exchanges run side by side — X25519 and ML-KEM-1024 — both peers contribute quantum-sourced entropy, and each leg is signed under its own FIPS 204 context. A plain-language walk through Entangled Session v1. https://qeryx.com/guides/verify-a-bell-binding qeryx:verify-a-bell-binding:v1.1 Fri, 17 Jul 2026 00:00:00 +0000 how-to How a third party — an auditor, a journalist, a counterparty — checks that a session claiming a Bell binding really consumed a CHSH-verified transcript: fetch the transparency leaf, verify the Merkle inclusion proof, recompute S from the measurement counts, and confirm it sits in the accepted window. No trust in QERYX required. https://qeryx.com/guides/verify-your-safety-number qeryx:verify-your-safety-number:v1.0 Fri, 17 Jul 2026 00:00:00 +0000 how-to The one manual step that closes the machine-in-the-middle door. What the safety number is, why the Key Transparency log cannot replace an out-of-band check, and the exact steps to run one — in person, over a call, or by QR. Five minutes, once per contact. https://qeryx.com/guides/what-a-subpoena-yields qeryx:what-a-subpoena-yields:v1.0 Fri, 17 Jul 2026 00:00:00 +0000 tutorial The honest inventory of what a legal order against the QERYX relay can and cannot produce: ciphertext the order-holder cannot decrypt, blinded participant hashes, connection-level metadata — and, for destroyed conversations, envelope-locked bytes under a key that no longer exists. No dramatization; the table is the answer. https://qeryx.com/guides/reviewer-faq qeryx:reviewer-faq:v1.0 Fri, 01 May 2026 00:00:00 +0000 tutorial State-actor-tier reviewer questions, anticipated and answered: why Level 5 parameter sets, why hybrid rather than pure post-quantum, where formal verification stands, how side-channel classes are foreclosed, what happens when operator keys are compromised, and where to find a wire trace you can verify yourself.