diff --git a/.golangci.yml b/.golangci.yml
index 50be17eef8..6d18155050 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -16,6 +16,7 @@ linters:
     - gci
     - gocheckcompilerdirectives
     - gofmt
+    - goheader
     - goimports
     - gomodguard
     - gosec
@@ -53,6 +54,10 @@ linters-settings:
       - alias
       - dot
       - blank
+  goheader:
+    values:
+    template-path: .libevm-header
+
   gomodguard:
     blocked:
       modules:
@@ -78,6 +83,7 @@ issues:
         - errcheck
         - gci
         - gofmt
+        - goheader
         - gosec
         - gosimple
         - govet
@@ -92,6 +98,7 @@ issues:
         - testifylint
         - thelper
         - tparallel
+        - typecheck
         - usestdlibvars
         - varnamelen
         - wastedassign
diff --git a/.libevm-header b/.libevm-header
new file mode 100644
index 0000000000..f8685d93f2
--- /dev/null
+++ b/.libevm-header
@@ -0,0 +1,15 @@
+Copyright {{ MOD-YEAR }} the libevm authors.
+
+The libevm additions to go-ethereum are free software: you can redistribute
+them and/or modify them under the terms of the GNU Lesser General Public License
+as published by the Free Software Foundation, either version 3 of the License,
+or (at your option) any later version.
+
+The libevm additions are distributed in the hope that they will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with the go-ethereum library. If not, see
+<http://www.gnu.org/licenses/>.
diff --git a/README.md b/README.md
index 1e8dba8090..b4f80524a0 100644
--- a/README.md
+++ b/README.md
@@ -356,3 +356,9 @@ also included in our repository in the `COPYING.LESSER` file.
 The go-ethereum binaries (i.e. all code inside of the `cmd` directory) are licensed under the
 [GNU General Public License v3.0](https://www.gnu.org/licenses/gpl-3.0.en.html), also
 included in our repository in the `COPYING` file.
+
+The libevm (i) _additions_ to the go-ethereum library (i.e. all code in files with `libevm` in their full path,
+be it a directory or file name); and (ii) _modifications_ to existing go-ethereum code; are licensed under the
+[GNU Lesser General Public License v3.0](https://www.gnu.org/licenses/lgpl-3.0.en.html),
+also included in our repository in the `COPYING.LESSER` file. A comprehensive outline of _modifications_ is
+produced by the [libevm delta workflow](https://github.com/ava-labs/go-ethereum/actions/workflows/libevm-delta.yml).
diff --git a/core/state_transition.libevm.go b/core/state_transition.libevm.go
index 4d2ee16f02..8c30ebc4b2 100644
--- a/core/state_transition.libevm.go
+++ b/core/state_transition.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package core
 
 // canExecuteTransaction is a convenience wrapper for calling the
diff --git a/core/state_transition.libevm_test.go b/core/state_transition.libevm_test.go
index 15235b4013..26abd15a47 100644
--- a/core/state_transition.libevm_test.go
+++ b/core/state_transition.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package core_test
 
 import (
diff --git a/core/vm/contracts.libevm.go b/core/vm/contracts.libevm.go
index e615ed545a..78f6df9192 100644
--- a/core/vm/contracts.libevm.go
+++ b/core/vm/contracts.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm
 
 import (
diff --git a/core/vm/contracts.libevm_test.go b/core/vm/contracts.libevm_test.go
index b709da7445..d40513f89c 100644
--- a/core/vm/contracts.libevm_test.go
+++ b/core/vm/contracts.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm_test
 
 import (
diff --git a/core/vm/evm.libevm_test.go b/core/vm/evm.libevm_test.go
index 3987ab1f2f..069dbc2887 100644
--- a/core/vm/evm.libevm_test.go
+++ b/core/vm/evm.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm
 
 import (
diff --git a/core/vm/hooks.libevm.go b/core/vm/hooks.libevm.go
index bd5668b593..42b7f93a49 100644
--- a/core/vm/hooks.libevm.go
+++ b/core/vm/hooks.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm
 
 import "github.com/ethereum/go-ethereum/params"
diff --git a/core/vm/libevm_test.go b/core/vm/libevm_test.go
index 5c2fbb02a1..4e365d4e42 100644
--- a/core/vm/libevm_test.go
+++ b/core/vm/libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm
 
 // The original RunPrecompiledContract was migrated to being a method on
diff --git a/core/vm/stack.libevm.go b/core/vm/stack.libevm.go
index bc16735276..a022a62197 100644
--- a/core/vm/stack.libevm.go
+++ b/core/vm/stack.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm
 
 import "github.com/holiman/uint256"
diff --git a/core/vm/stack.libevm_test.go b/core/vm/stack.libevm_test.go
index f6ce05e1a6..5a0db84543 100644
--- a/core/vm/stack.libevm_test.go
+++ b/core/vm/stack.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package vm_test
 
 import (
diff --git a/libevm/ethtest/evm.go b/libevm/ethtest/evm.go
index 7bf1a23480..27a7c47458 100644
--- a/libevm/ethtest/evm.go
+++ b/libevm/ethtest/evm.go
@@ -1,3 +1,19 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
+
 // Package ethtest provides utility functions for use in testing
 // Ethereum-related functionality.
 package ethtest
diff --git a/libevm/ethtest/rand.go b/libevm/ethtest/rand.go
index b6319178d1..8584ce1169 100644
--- a/libevm/ethtest/rand.go
+++ b/libevm/ethtest/rand.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package ethtest
 
 import (
diff --git a/libevm/hookstest/stub.go b/libevm/hookstest/stub.go
index 270c113f57..78fec96f0e 100644
--- a/libevm/hookstest/stub.go
+++ b/libevm/hookstest/stub.go
@@ -1,3 +1,19 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
+
 // Package hookstest provides test doubles and convenience wrappers for testing
 // libevm hooks.
 package hookstest
diff --git a/libevm/interfaces_test.go b/libevm/interfaces_test.go
index 05497ed40a..0357db665b 100644
--- a/libevm/interfaces_test.go
+++ b/libevm/interfaces_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package libevm_test
 
 import (
diff --git a/libevm/libevm.go b/libevm/libevm.go
index bd11f971fe..31f8b11b51 100644
--- a/libevm/libevm.go
+++ b/libevm/libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package libevm
 
 import (
diff --git a/libevm/pseudo/constructor.go b/libevm/pseudo/constructor.go
index 9142924034..4245727857 100644
--- a/libevm/pseudo/constructor.go
+++ b/libevm/pseudo/constructor.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package pseudo
 
 // A Constructor returns newly constructed [Type] instances for a pre-registered
diff --git a/libevm/pseudo/constructor_test.go b/libevm/pseudo/constructor_test.go
index 7b681c48d6..4dc3b19aef 100644
--- a/libevm/pseudo/constructor_test.go
+++ b/libevm/pseudo/constructor_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package pseudo
 
 import (
diff --git a/libevm/pseudo/type.go b/libevm/pseudo/type.go
index 822198f973..21eb31e2aa 100644
--- a/libevm/pseudo/type.go
+++ b/libevm/pseudo/type.go
@@ -1,3 +1,19 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
+
 // Package pseudo provides a bridge between generic and non-generic code via
 // pseudo-types and pseudo-values. With careful usage, there is minimal
 // reduction in type safety.
diff --git a/libevm/pseudo/type_test.go b/libevm/pseudo/type_test.go
index 8a47fe562b..d68348cff0 100644
--- a/libevm/pseudo/type_test.go
+++ b/libevm/pseudo/type_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package pseudo
 
 import (
diff --git a/params/config.libevm.go b/params/config.libevm.go
index e4e43d9122..f427e40036 100644
--- a/params/config.libevm.go
+++ b/params/config.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params
 
 import (
diff --git a/params/config.libevm_test.go b/params/config.libevm_test.go
index 524117e81b..f9faae9b11 100644
--- a/params/config.libevm_test.go
+++ b/params/config.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params
 
 import (
diff --git a/params/example.libevm_test.go b/params/example.libevm_test.go
index 52559688c7..9e8a990d3b 100644
--- a/params/example.libevm_test.go
+++ b/params/example.libevm_test.go
@@ -1,3 +1,19 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
+
 // In practice, everything in this file except for the Example() function SHOULD
 // be a standalone package, typically called `extraparams`. As long as this new
 // package is imported anywhere, its init() function will register the "extra"
diff --git a/params/hooks.libevm.go b/params/hooks.libevm.go
index f40da7ba87..57e40d4f31 100644
--- a/params/hooks.libevm.go
+++ b/params/hooks.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params
 
 import (
diff --git a/params/hooks.libevm_test.go b/params/hooks.libevm_test.go
index 4b9fbf4e9d..8cec3103b2 100644
--- a/params/hooks.libevm_test.go
+++ b/params/hooks.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params_test
 
 import (
diff --git a/params/json.libevm.go b/params/json.libevm.go
index a60dd39062..c18ae4c0a1 100644
--- a/params/json.libevm.go
+++ b/params/json.libevm.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params
 
 import (
diff --git a/params/json.libevm_test.go b/params/json.libevm_test.go
index aa9f7928fd..66173d350f 100644
--- a/params/json.libevm_test.go
+++ b/params/json.libevm_test.go
@@ -1,3 +1,18 @@
+// Copyright 2024 the libevm authors.
+//
+// The libevm additions to go-ethereum are free software: you can redistribute
+// them and/or modify them under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation, either version 3 of the License,
+// or (at your option) any later version.
+//
+// The libevm additions are distributed in the hope that they will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+// General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see
+// <http://www.gnu.org/licenses/>.
 package params
 
 import (