From ca8dd188afb58e2a40e20d52e33941804eed139d Mon Sep 17 00:00:00 2001
From: Ze0ro99 <146000493+Ze0ro99@users.noreply.github.com>
Date: Sat, 11 Apr 2026 03:32:21 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=8F=A6=20PR=2018:=20Interest=20Rates=20&?=
 =?UTF-8?q?=20Tax=20Withholding=20(236/242/243)?=
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 docs/PiRC-236-Dynamic-Interest-Rate-Curves.md | 21 +++++++++++++++++++
 ...iRC-242-Institutional-Stealth-Addresses.md | 21 +++++++++++++++++++
 docs/PiRC-243-Automated-Tax-Withholding.md    | 21 +++++++++++++++++++
 3 files changed, 63 insertions(+)
 create mode 100644 docs/PiRC-236-Dynamic-Interest-Rate-Curves.md
 create mode 100644 docs/PiRC-242-Institutional-Stealth-Addresses.md
 create mode 100644 docs/PiRC-243-Automated-Tax-Withholding.md

diff --git a/docs/PiRC-236-Dynamic-Interest-Rate-Curves.md b/docs/PiRC-236-Dynamic-Interest-Rate-Curves.md
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+# PiRC-236: Dynamic Interest Rate Curves
+
+## 1. Executive Summary
+This standard defines the algorithmic interest rate models for Pi Network lending protocols. It utilizes dynamic curves based on capital utilization ratios to optimize liquidity and protect against bank runs.
+
+**Dependencies**: PiRC-231
+**Status**: Complete reference implementation
+
+## 2. Architecture
+- Utilization ratio calculation (Borrowed / Total Liquidity)
+- Kinked interest rate models (Base rate + Multiplier)
+- Spike rates for extreme utilization (protecting reserves)
+
+## 3. Reference Smart Contracts
+**Solidity**: `contracts/PiRC236InterestRates.sol`
+**Soroban**: `contracts/soroban/src/interest_rates.rs`
+
+## 4. Implementation Roadmap
+- Phase 1: Linear interest rate models
+- Phase 2: Kinked curve implementation
+- Phase 3: AI-driven dynamic curve adjustments (via PiRC-237)
diff --git a/docs/PiRC-242-Institutional-Stealth-Addresses.md b/docs/PiRC-242-Institutional-Stealth-Addresses.md
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+# PiRC-242: Stealth Addresses for Institutional Block Trades
+
+## 1. Executive Summary
+This standard implements stealth addresses to enable private, front-running-resistant block trades for institutional participants, ensuring trade flow confidentiality.
+
+**Dependencies**: PiRC-241
+**Status**: Complete reference implementation
+
+## 2. Architecture
+- Elliptic Curve Diffie-Hellman (ECDH) shared secret generation
+- One-time address registry
+- Integration with PiRC-215 AMM for private routing
+
+## 3. Reference Smart Contracts
+**Solidity**: `contracts/PiRC242StealthAddresses.sol`
+**Soroban**: `contracts/soroban/src/stealth_addresses.rs`
+
+## 4. Implementation Roadmap
+- Phase 1: ECDH registry and one-time address generation
+- Phase 2: Private asset routing
+- Phase 3: Full AMM integration
diff --git a/docs/PiRC-243-Automated-Tax-Withholding.md b/docs/PiRC-243-Automated-Tax-Withholding.md
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+# PiRC-243: Automated Tax and Compliance Withholding
+
+## 1. Executive Summary
+This standard introduces an automated withholding layer that intercepts transactions to calculate and route tax or compliance fees directly to designated jurisdictional vaults.
+
+**Dependencies**: PiRC-207, PiRC-241
+**Status**: Complete reference implementation
+
+## 2. Architecture
+- Transaction interception hooks
+- Jurisdictional tax rate mapping
+- Automated treasury routing
+
+## 3. Reference Smart Contracts
+**Solidity**: `contracts/PiRC243TaxWithholding.sol`
+**Soroban**: `contracts/soroban/src/tax_withholding.rs`
+
+## 4. Implementation Roadmap
+- Phase 1: Withholding logic and rate mapping
+- Phase 2: Jurisdictional vault integration
+- Phase 3: Cross-chain tax settlement