https://postfiat.org/research/ Recent content in Research on Post Fiat https://postfiat.org/papermod-cover.png https://postfiat.org/papermod-cover.png Hugo -- 0.148.1 en Sat, 20 Jun 2026 00:00:00 +0000 https://postfiat.org/research/heavy-zk-optimization-v2/ Sat, 20 Jun 2026 00:00:00 +0000 https://postfiat.org/research/heavy-zk-optimization-v2/ A grounded technical look at the devnet-proven, code-reviewed Halo2 circuit behind Post Fiat’s shielded NAVCoin swaps: every major constraint, the measured CPU prover bottleneck, the K=15/key-cache optimization sprint, and the remaining path to GPU-accelerated proving. https://postfiat.org/research/private-nav-otc-swaps/ Thu, 18 Jun 2026 00:00:00 +0000 https://postfiat.org/research/private-nav-otc-swaps/ A design for using Post Fiat to support private primary NAV subscriptions that add source-labeled USDC to NAVCoin reserves without walking a thin AMM book, plus private secondary OTC swaps for existing holders. The core claim is that TVL formation improves when issuance, reserve receipts, NAV policy, and shielded settlement are co-located; the hard boundaries are USDC provenance, mint escrow enforcement, credential governance, replayability, privacy budgets, and secondary liquidity.