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EPOCH Appchain: Stacks Fork + Native Rust Services

Instead of 5 external services talking to the chain via HTTP, they become native chain modules. Graph Kernel queries happen at chain speed, not network speed. N'Ko inscriptions render inside the block validator. RAG++ vector search is part of consensus.

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Instead of 5 external services talking to the chain via HTTP, they become native chain modules. Graph Kernel queries happen at chain speed, not network speed. N'Ko inscriptions render inside the block validator. RAG++ vector search is part of consensus. | Crate | Lines | Appchain Role | |-------|-------|--------------| | cc-rag-plus-plus | 33,274 | Native vector similarity precompile | | cc-inscription | 22,881 | Native inscription validator (the killer feature) | | cc-graph-kernel | 14,953 | Native context slicing with admissibility tokens | | cc-protocol | 7,429 | Smart contract type definitions | | cc-kernel | 4,357 | Ledger/storage layer | | cc-semantic-language | 4,000 | N'Ko text processing primitives | **Appchain spec**: 764 lines at `docs/appchain-mining-spec.md` covering mining rules, bridge contracts, economic model, security analysis. **Fork base**: Stacks `feat/app-chain-mvp` branch. Alpha quality, predates Nakamoto upgrade. Needs rebase against v3.[ip]. These run inside the block validator at Rust speed, not Clarity interpreter speed.

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