chore: add zkattester readme

Author: fbwoolf

consensus/types/src/execution_proof.rs

@@ -8,13 +8,13 @@ use tree_hash_derive::TreeHash;
 
 use super::ExecutionProofId;
 
-/// TODO(ethproofs): Set to 2MB for the demo.
+/// TODO(ethproofs): Set to 3MB for the demo.
 ///
 /// Maximum size of proof data in bytes
 ///
 /// Note: Most proofs will fit within 300KB. Some zkVMs have 1MB proofs (currently)
 /// and so this number was set to accommodate for the most zkVMs.
-pub const MAX_PROOF_DATA_BYTES: usize = 2_097_152;
+pub const MAX_PROOF_DATA_BYTES: usize = 3_145_728;
 
 /// TODO(ethproofs): Set to 1 for the demo.
 ///

zkvm_execution_layer/README.md

@@ -0,0 +1,38 @@
+# Running the zkAttester client
+
+### WARNING: THIS CODE IS EXPERIMENTAL - FOR DEMO ONLY
+
+**Steps to run the modified Lighthouse client:**
+
+1. Clone the repo: `https://github.com/ethproofs/lighthouse`
+2. `git checkout ethproofs/zkattester-demo`
+3. Run `make` to build the new binary
+4. Install the new binary: `sudo cp ~/.cargo/bin/lighthouse /usr/local/bin/`
+5. Install Docker if needed
+6. For the dummy EL run: `docker build -f dummy_el/Dockerfile -t dummy_el:latest .`
+7. Run (e.g. Linux Debian):
+
+```bash
+docker run -d \
+    -p 8551:8551 \
+    --name dummy-el \
+    dummy_el:latest \
+    /usr/local/bin/dummy_el \
+   --port 8551 \
+    --jwt-secret /path/to/jwt.hex
+```
+
+8. Stop your EL and CL if needed
+9. Start your LH client with the `--activate-zkvm` flag:
+
+```bash
+   lighthouse bn \
+    --mainnet \
+    --execution-endpoint http://localhost:8551 \
+    --execution-jwt /path/to/jwt.hex \
+    --activate-zkvm \
+    --debug-level debug \
+    # ...other flags
+```
+
+10. For debug logs: `sudo journalctl -u lighthouse-beacon -f | grep -i "Ethproofs"`