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On MintLane since August 2026

9 checks. Real code. No guessing. The exact logic MintLane runs to verify a crypto payment is real, not spoofed, not replayed, not underpaid. 9 checks, in order, with the reasoning and the actual code behind each one. Pulled straight from a live webhook handler. All revenue from this product goes directly back into making MintLane better :)

This is the real build log of MintLane's Payment system. Every bug included. The Architecture, every decison, the 7 bugs i ran into and why, code snippets, and the proof it works. Written by the person who built it, so if you're building wallet connections, webhooks, or non-custodial crypto payments, this is the PDF that would've saved me hours. All revenue from this product goes directly back into making MintLane better :)