https://bondify.dev/blog Engineering notes on messenger authentication, stateless proofs, webhooks and shipping auth without SMS. en https://bondify.dev/blog/handling-webhooks-correctly https://bondify.dev/blog/handling-webhooks-correctly How signed webhook delivery works, the four mistakes that break signature verification, and how to make your handler idempotent against retries. Sat, 20 Jun 2026 00:00:00 GMT Bondify Team webhooks backend guide https://bondify.dev/blog/stateless-auth-proof-model https://bondify.dev/blog/stateless-auth-proof-model A technical deep-dive into the signed JWT proof that lets your backend verify a Telegram login locally, with no network call back to Bondify. Fri, 05 Jun 2026 00:00:00 GMT Bondify Team architecture security jwt https://bondify.dev/blog/sms-otp-real-cost https://bondify.dev/blog/sms-otp-real-cost A breakdown of where SMS-based login bleeds money and users — and what changes when you switch the first step of signup to a messenger tap. Mon, 01 Jun 2026 00:00:00 GMT Bondify Team product growth comparison