💧 PR 9: Cross-Chain AMM & Liquidity Routing (215/227/251)

Author: Ze0ro99

docs/PiRC-215-Cross-Chain-Liquidity-and-AMM-Protocol.md

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+# PiRC-215: Cross-Chain Liquidity & AMM Protocol
+
+## 1. Executive Summary
+
+This standard defines cross-chain liquidity pools and automated market makers, integrated with PiRC-211 Sovereign Bridge.
+
+**Dependencies**: PiRC-211, PiRC-207  
+**Status**: Complete reference implementation
+
+## 2. Architecture
+
+- Hybrid AMM model
+- 7-Layer token support
+- Cross-chain routing via PiRC-211
+- Liquidity incentives using $REF
+
+## 3. Reference Smart Contracts
+
+**Solidity**: `contracts/PiRC215AMM.sol`  
+**Soroban**: `contracts/soroban/src/amm.rs`
+
+## 4. Implementation Roadmap
+
+- Phase 1 (Q2 2026): Core AMM + liquidity pools
+- Phase 2 (Q3 2026): Cross-chain routing
+- Phase 3 (Q4 2026): Full liquidity incentives
+
+**Status**: Ready for Testnet deployment.

docs/PiRC-227-Illiquid-AMM.md

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+# PiRC-227: AMM for Illiquid Assets
+
+## 1. Executive Summary
+This standard defines an Automated Market Maker (AMM) with specialized bonding curves and time-weighted liquidity execution, designed specifically for low-frequency trading assets such as tokenized Real Estate or fractionalized IP.
+
+## 2. Architecture
+- Time-Weighted Average Price (TWAP) bonding curves.
+- Dynamic fee structures to prevent slippage exploitation.
+- Integration with PiRC-207 for Parity verification during swaps.
+
+## 3. Reference Smart Contracts
+**Solidity**: `contracts/PiRC227IlliquidAMM.sol`  
+**Soroban**: `contracts/soroban/src/illiquid_amm.rs`
+
+**Status**: Ready.
+

docs/PiRC-251-Protocol-Owned-Liquidity.md

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+# PiRC-251: Protocol-Owned Liquidity (POL) Routing
+
+## 1. Executive Summary
+This standard defines the mechanisms for Protocol-Owned Liquidity (POL) routing. It allows the Pi Network ecosystem treasury to automatically deploy capital into PiRC-215 AMMs, ensuring deep liquidity for 7-Layer Colored Tokens without relying solely on mercenary capital.
+
+**Dependencies**: PiRC-215, PiRC-220
+**Status**: Complete reference implementation
+
+## 2. Architecture
+- Automated liquidity provisioning
+- LP token custody within the ecosystem treasury
+- Yield harvesting and reinvestment loops
+
+## 3. Reference Smart Contracts
+**Solidity**: `contracts/PiRC251POLRouting.sol`
+**Soroban**: `contracts/soroban/src/pol_routing.rs`
+
+## 4. Implementation Roadmap
+- Phase 1: Basic POL deployment to AMMs
+- Phase 2: Automated yield harvesting
+- Phase 3: Dynamic liquidity rebalancing