From f7c0f04520d5fae83eb7d57d83f0f73c552f3432 Mon Sep 17 00:00:00 2001
From: daveroga <daveroga@gmail.com>
Date: Mon, 24 Nov 2025 08:02:34 +0100
Subject: [PATCH] add base and bnb networks

---
 chain.go    |  4 ++++
 did.go      | 12 ++++++++++++
 did_test.go | 28 ++++++++++++++++++++++++++++
 3 files changed, 44 insertions(+)

diff --git a/chain.go b/chain.go
index 838e30a..4bd293f 100644
--- a/chain.go
+++ b/chain.go
@@ -38,6 +38,10 @@ var chainIDs = map[chainIDKey]ChainID{
 	{Billions, Test}:    6913,
 	{Linea, Main}:       59144,
 	{Linea, Sepolia}:    59141,
+	{Base, Main}:        8453,
+	{Base, Sepolia}:     84532,
+	{Bnb, Main}:         56,
+	{Bnb, Test}:         97,
 }
 
 // ChainIDfromDID returns chain name from w3c.DID
diff --git a/did.go b/did.go
index af02fd9..0a69f2f 100644
--- a/did.go
+++ b/did.go
@@ -70,6 +70,10 @@ const (
 	Linea Blockchain = "linea"
 	// UnknownChain is used when it's not possible to retrieve blockchain type from identifier
 	UnknownChain Blockchain = "unknown"
+	// Base is Base blockchain network
+	Base Blockchain = "base"
+	// Bnb is BNB Smart Chain blockchain network
+	Bnb Blockchain = "bnb"
 	// ReadOnly should be used for readonly identity to build readonly flag
 	ReadOnly Blockchain = "readonly"
 	// NoChain can be used for identity to build readonly flag
@@ -82,6 +86,8 @@ var blockchains = map[Blockchain]Blockchain{
 	Privado:      Privado,
 	Billions:     Billions,
 	Linea:        Linea,
+	Base:         Base,
+	Bnb:          Bnb,
 	UnknownChain: UnknownChain,
 	ReadOnly:     ReadOnly,
 	NoChain:      NoChain,
@@ -224,6 +230,12 @@ var blockchainNetworkMap = map[DIDNetworkFlag]byte{
 
 	{Blockchain: Linea, NetworkID: Main}:    0b0100_0000 | 0b0000_1001,
 	{Blockchain: Linea, NetworkID: Sepolia}: 0b0100_0000 | 0b0000_1000,
+
+	{Blockchain: Base, NetworkID: Main}:    0b0101_0000 | 0b0000_0001,
+	{Blockchain: Base, NetworkID: Sepolia}: 0b0101_0000 | 0b0000_0010,
+
+	{Blockchain: Bnb, NetworkID: Main}: 0b0110_0000 | 0b0000_0001,
+	{Blockchain: Bnb, NetworkID: Test}: 0b0110_0000 | 0b0000_0010,
 }
 
 // DIDMethodNetwork is map for did methods and their blockchain networks
diff --git a/did_test.go b/did_test.go
index 6d20ccc..fc0dd2a 100644
--- a/did_test.go
+++ b/did_test.go
@@ -243,6 +243,34 @@ func TestDID_Build_From_Types(t *testing.T) {
 			net:     Sepolia,
 			wantDID: "did:iden3:linea:sepolia:28itzVLBHnMHocFAeArLFYHP59J7WN1s5JwL8yGpQw",
 		},
+		{
+			title:   "Iden3 | Base, Main",
+			method:  DIDMethodIden3,
+			chain:   Base,
+			net:     Main,
+			wantDID: "did:iden3:base:main:2AXVV81Fe3jx79ypPoj2DHadUFBWVkhKZNFyShK2gP",
+		},
+		{
+			title:   "Iden3 | Base, Sepolia",
+			method:  DIDMethodIden3,
+			chain:   Base,
+			net:     Sepolia,
+			wantDID: "did:iden3:base:sepolia:2Aj7YJXNZrZaatB12speshizQNHDiaKvivrGUfYAVD",
+		},
+		{
+			title:   "Iden3 | Bnb, Main",
+			method:  DIDMethodIden3,
+			chain:   Bnb,
+			net:     Main,
+			wantDID: "did:iden3:bnb:main:2DjSN2KAUxt1ko4kcwH8owtQQCkt2to2CMifzCwBbd",
+		},
+		{
+			title:   "Iden3 | Bnb, Test",
+			method:  DIDMethodIden3,
+			chain:   Bnb,
+			net:     Test,
+			wantDID: "did:iden3:bnb:test:2Dw4RCqHQmheEXFwG1NmUN2mLKrbFiRdMvJy2BAKQT",
+		},
 	}
 
 	for i := range testCases {