Merge pull request #5412 from ethereum-optimism/fault-proof-specs

specs: initial fault proof program/VM specs

specs/README.md

@@ -24,6 +24,14 @@ that maintains 1:1 compatibility with Ethereum.
 - [Predeploys](predeploys.md)
 - [Glossary](glossary.md)
 
+### Experimental
+
+Specifications of new features in active development.
+
+- [Fault Proof](./fault-proof.md)
+- [Dispute Game](./dispute-game.md)
+- [Dispute Game Interface](./dispute-game-interface.md)
+
 ## Design Goals
 
 Our aim is to design a protocol specification that is: