[draft] MD-85: Bridge Architecture Requirements

.github/CODEOWNERS

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 /MD/md-4/ @l-monninger
 /MD/md-5/ @l-monninger @apenzk
 /MD/md-15/ @l-monninger @apenzk
+/MD/md-85/ @franck44
 /MD/md-93/ @andygolay
 
 ## MIPs

MD/md-85/README.md

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+# MD-85: Bridge Architecture Requirements
+
+- **Description**: Elicit the requirements of the native bridge.
+- **Authors**: [Franck Cassez](mailto:[email protected])
+
+## Overview
+
+This MD summarizes the requirements of the _Native Bridge_ (bridge in the sequel).
+
+## Desiderata
+
+### D1: High-level Description of the Native Bridge
+
+**Description**: A high-level diagram of the architecture
+
+**Justification**: Provides a reference for documentation and implementation.
+
+### D2: List the expected functionalities of the bridge
+
+**Description**: A list of expected functionalities.
+
+**Justification**: Provides a reference for documentation and implementation.
+
+### D3: Elicit the trust assumptions and permissions
+
+**Description**: Provide a list of trusted systems/components and the associated permissions.
+
+**Justification**: Provides a reference for documentation and implementation and governance.
+
+### D4: Explain how the bridge transfers work
+
+**Description**: Provide sequence diagrams to explain how bridging from Move to Ethereum (and back) works.
+
+**Justification**: Explain the sequence of actions required on the chains and their ordering, to complete a bridge transfer.
+
+## Change Logs