feat: set default builderBoostFactor to 90

docs/pages/validator-management/vc-configuration.md

@@ -82,7 +82,8 @@ With produceBlockV3 (enabled automatically after the Deneb hard fork), the `--bu
 
 With Lodestar's `--builder.selection` validator options, you can select:
 
-- `maxprofit`: Default setting for Lodestar set at `--builder.boostFactor=100`. This default setting will always choose the more profitable block. Using this option, you may customize your `--builder.boostFactor` to your preference. Examples of its usage are below.
+- `default`: Default setting for Lodestar set at `--builder.boostFactor=90`. This default setting will have a local block boost of ~10%. Note that this value might change in the future depending on what we think is the most appropriate value to help improve censorship resistance of Ethereum.
+- `maxprofit`: An alias of `--builder.boostFactor=100`, which will always choose the more profitable block. Using this option, you may customize your `--builder.boostFactor` to your preference. Examples of its usage are below.
 - `executionalways`: An alias of `--builder.boostFactor=0`, which will select the local execution block, unless it fails to produce due to an error or a delay in the response from the execution client.
 - `executiononly`: Beacon node will be requested to produce local execution block even if builder relays are configured. This option will always select the local execution block and will error if it couldn't produce one.
 - `builderalways`: An alias of `--builder.boostFactor=18446744073709551615` (2\*\*64 - 1), which will select the builder block, unless the builder block fails to produce. The builder block may fail to produce if it's not available, not timely or there is an indication of censorship via `shouldOverrideBuilder` from the execution payload response.

packages/api/src/beacon/routes/validator.ts

@@ -42,6 +42,7 @@ import {allForksBlockContentsResSerializer} from "../../utils/routes.js";
 import {ExecutionOptimistic} from "./beacon/block.js";
 
 export enum BuilderSelection {
+  Default = "default",
   BuilderAlways = "builderalways",
   ExecutionAlways = "executionalways",
   MaxProfit = "maxprofit",

packages/beacon-node/src/api/impl/validator/utils.ts

@@ -60,6 +60,7 @@ export function selectBlockProductionSource({
     case routes.validator.BuilderSelection.ExecutionOnly:
       return ProducedBlockSource.engine;
 
+    case routes.validator.BuilderSelection.Default:
     case routes.validator.BuilderSelection.MaxProfit:
       return builderBoostFactor !== MAX_BUILDER_BOOST_FACTOR &&
         (builderBoostFactor === BigInt(0) || engineBlockValue >= (builderBlockValue * builderBoostFactor) / BigInt(100))

packages/cli/src/cmds/validator/options.ts

@@ -252,7 +252,7 @@ export const validatorOptions: CliCommandOptions<IValidatorCliArgs> = {
   "builder.selection": {
     type: "string",
     description:
-      "Builder block selection strategy `maxprofit`, `builderalways`, `builderonly`, `executionalways`, or `executiononly`",
+      "Builder block selection strategy `default`, `maxprofit`, `builderalways`, `builderonly`, `executionalways`, or `executiononly`",
     defaultDescription: `${defaultOptions.builderSelection}`,
     group: "builder",
   },

packages/cli/src/util/proposerConfig.ts

@@ -107,6 +107,8 @@ export function readProposerConfigDir(filepath: string, filename: string): Propo
 export function parseBuilderSelection(builderSelection?: string): routes.validator.BuilderSelection | undefined {
   if (builderSelection) {
     switch (builderSelection) {
+      case "default":
+        break;
       case "maxprofit":
         break;
       case "builderalways":

packages/cli/test/sim/multi_fork.test.ts

@@ -47,7 +47,7 @@ const env = await SimulationEnvironment.initWithDefaults(
           // return with engine full block and publish via publishBlockV2
           clientOptions: {
             useProduceBlockV3: true,
-            "builder.selection": "maxprofit",
+            "builder.selection": "default",
           },
         },
       },
@@ -65,7 +65,7 @@ const env = await SimulationEnvironment.initWithDefaults(
           // builder is attached to beacon, and publish via publishBlindedBlockV2
           clientOptions: {
             useProduceBlockV3: true,
-            "builder.selection": "maxprofit",
+            "builder.selection": "default",
             blindedLocal: true,
           },
         },
@@ -100,7 +100,7 @@ const env = await SimulationEnvironment.initWithDefaults(
           // of local block and subsequent publishing via publishBlindedBlock
           clientOptions: {
             useProduceBlockV3: false,
-            "builder.selection": "maxprofit",
+            "builder.selection": "default",
           },
         },
       },

packages/cli/test/unit/validator/parseProposerConfig.test.ts

@@ -26,7 +26,7 @@ const testValue = {
       feeRecipient: "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
       builder: {
         gasLimit: 35000000,
-        selection: routes.validator.BuilderSelection.MaxProfit,
+        selection: routes.validator.BuilderSelection.BuilderAlways,
         boostFactor: BigInt(18446744073709551616),
       },
     },
@@ -37,8 +37,8 @@ const testValue = {
     feeRecipient: "0xcccccccccccccccccccccccccccccccccccccccc",
     builder: {
       gasLimit: 30000000,
-      selection: routes.validator.BuilderSelection.BuilderAlways,
-      boostFactor: BigInt(100),
+      selection: routes.validator.BuilderSelection.MaxProfit,
+      boostFactor: BigInt(50),
     },
   },
 };

packages/cli/test/unit/validator/proposerConfigs/validData.yaml

@@ -9,13 +9,13 @@ proposer_config:
     fee_recipient: '0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'
     builder:
       gas_limit: "35000000"
-      selection: "maxprofit"
+      selection: "builderalways"
       boost_factor: "18446744073709551616"
 default_config:
   graffiti: 'default graffiti'
   strict_fee_recipient_check: "true"
   fee_recipient: '0xcccccccccccccccccccccccccccccccccccccccc'
   builder:
     gas_limit: "30000000"
-    selection: "builderalways"
-    boost_factor: "100"
+    selection: "maxprofit"
+    boost_factor: "50"

packages/validator/src/services/validatorStore.ts

@@ -124,7 +124,7 @@ export const defaultOptions = {
   suggestedFeeRecipient: "0x0000000000000000000000000000000000000000",
   defaultGasLimit: 30_000_000,
   builderSelection: routes.validator.BuilderSelection.ExecutionOnly,
-  builderAliasSelection: routes.validator.BuilderSelection.MaxProfit,
+  builderAliasSelection: routes.validator.BuilderSelection.Default,
   builderBoostFactor: BigInt(100),
   // spec asks for gossip validation by default
   broadcastValidation: routes.beacon.BroadcastValidation.gossip,
@@ -267,6 +267,12 @@ export class ValidatorStore {
 
     let boostFactor;
     switch (selection) {
+      case routes.validator.BuilderSelection.Default:
+        // Default value slightly favors local block to improve censorship resistance of Ethereum
+        // The people have spoken and so it shall be https://x.com/lodestar_eth/status/1772679499928191044
+        boostFactor = BigInt(90);
+        break;
+
       case routes.validator.BuilderSelection.MaxProfit:
         boostFactor =
           (this.validators.get(pubkeyHex)?.builder || {}).boostFactor ?? this.defaultProposerConfig.builder.boostFactor;