feat: add GenesisTimestamp to NetworkParams (#12925)

Author: rjan90

CHANGELOG.md

@@ -13,12 +13,12 @@
 - **BREAKING**: Removed `SupportedProofTypes` from `StateGetNetworkParams` response as it was unreliable and didn't match FVM's actual supported proofs ([filecoin-project/lotus#12881](https://github.com/filecoin-project/lotus/pull/12881))
 - refactor(eth): attach ToFilecoinMessage converter to EthCall method for improved package/module import structure. This change also exports the converter as a public method, enhancing usability for developers utilizing Lotus as a library. ([filecoin-project/lotus#12844](https://github.com/filecoin-project/lotus/pull/12844))
 - feat(f3): Implement contract based parameter setting as for FRC-0099 ([filecoin-project/lotus#12861](https://github.com/filecoin-project/lotus/pull/12861))
-
 - chore: switch to pure-go zstd decoder for snapshot imports.  ([filecoin-project/lotus#12857](https://github.com/filecoin-project/lotus/pull/12857))
 - feat: automatically detect if the genesis is zstd compressed. ([filecoin-project/lotus#12885](https://github.com/filecoin-project/lotus/pull/12885)
 - `lotus send` now supports `--csv` option for sending multiple transactions. ([filecoin-project/lotus#12892](https://github.com/filecoin-project/lotus/pull/12892))
 - chore: upgrade to the latest go-f3 and allow F3 chain exchange topics ([filecoin-project/lotus#12893](https://github.com/filecoin-project/lotus/pull/12893)
 - chore: upgrade to a minimum Golang version of `1.23.6` ([filecoin-project/lotus#12910](https://github.com/filecoin-project/lotus/pull/12910)
+- feat: add `GenesisTimestamp` field to `StateGetNetworkParams` response ([filecoin-project/lotus#12925](https://github.com/filecoin-project/lotus/pull/12925))
 
 # UNRELEASED v.1.32.0
 

api/types.go

@@ -160,6 +160,7 @@ type NetworkParams struct {
 	PreCommitChallengeDelay abi.ChainEpoch
 	ForkUpgradeParams       ForkUpgradeParams
 	Eip155ChainID           int
+	GenesisTimestamp        uint64
 }
 
 type ForkUpgradeParams struct {

build/openrpc/full.json

@@ -19970,7 +19970,8 @@
                                 "UpgradeTuktukHeight": 10101,
                                 "UpgradeTeepHeight": 10101
                             },
-                            "Eip155ChainID": 123
+                            "Eip155ChainID": 123,
+                            "GenesisTimestamp": 42
                         }
                     ],
                     "additionalProperties": false,
@@ -20113,6 +20114,10 @@
                             },
                             "type": "object"
                         },
+                        "GenesisTimestamp": {
+                            "title": "number",
+                            "type": "number"
+                        },
                         "NetworkName": {
                             "type": "string"
                         },

build/openrpc/gateway.json

@@ -9584,7 +9584,8 @@
                                 "UpgradeTuktukHeight": 10101,
                                 "UpgradeTeepHeight": 10101
                             },
-                            "Eip155ChainID": 123
+                            "Eip155ChainID": 123,
+                            "GenesisTimestamp": 42
                         }
                     ],
                     "additionalProperties": false,
@@ -9727,6 +9728,10 @@
                             },
                             "type": "object"
                         },
+                        "GenesisTimestamp": {
+                            "title": "number",
+                            "type": "number"
+                        },
                         "NetworkName": {
                             "type": "string"
                         },

documentation/en/api-v0-methods.md

@@ -4484,7 +4484,8 @@ Response:
     "UpgradeTuktukHeight": 10101,
     "UpgradeTeepHeight": 10101
   },
-  "Eip155ChainID": 123
+  "Eip155ChainID": 123,
+  "GenesisTimestamp": 42
 }
 ```
 

documentation/en/api-v1-unstable-methods.md

@@ -6836,7 +6836,8 @@ Response:
     "UpgradeTuktukHeight": 10101,
     "UpgradeTeepHeight": 10101
   },
-  "Eip155ChainID": 123
+  "Eip155ChainID": 123,
+  "GenesisTimestamp": 42
 }
 ```
 

node/impl/full/state.go

@@ -2043,12 +2043,20 @@ func (a *StateAPI) StateGetNetworkParams(ctx context.Context) (*api.NetworkParam
 		return nil, err
 	}
 
+	var genesisTimestamp uint64
+	if genBlock, err := a.Chain.GetGenesis(ctx); err != nil {
+		return nil, xerrors.Errorf("getting genesis: %w", err)
+	} else if genBlock != nil {
+		genesisTimestamp = genBlock.Timestamp
+	}
+
 	return &api.NetworkParams{
 		NetworkName:             networkName,
 		BlockDelaySecs:          buildconstants.BlockDelaySecs,
 		ConsensusMinerMinPower:  buildconstants.ConsensusMinerMinPower,
 		PreCommitChallengeDelay: buildconstants.PreCommitChallengeDelay,
 		Eip155ChainID:           buildconstants.Eip155ChainId,
+		GenesisTimestamp:        genesisTimestamp,
 		ForkUpgradeParams: api.ForkUpgradeParams{
 			UpgradeSmokeHeight:       buildconstants.UpgradeSmokeHeight,
 			UpgradeBreezeHeight:      buildconstants.UpgradeBreezeHeight,