From 65e3ead5557ed81fef6ee4a3672e382e40732a91 Mon Sep 17 00:00:00 2001
From: David Rodriguez <70919589+daveroga@users.noreply.github.com>
Date: Fri, 25 Apr 2025 14:01:59 +0200
Subject: [PATCH] Add Billions networks (#467)

* add billions networks

* update ubuntu version

* update billions main chainid
---
 .github/workflows/lint.yaml |  2 +-
 .github/workflows/test.yaml |  2 +-
 chain.go                    |  2 ++
 did.go                      |  6 ++++++
 did_test.go                 | 14 ++++++++++++++
 5 files changed, 24 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/lint.yaml b/.github/workflows/lint.yaml
index 0226065..28fe214 100644
--- a/.github/workflows/lint.yaml
+++ b/.github/workflows/lint.yaml
@@ -8,7 +8,7 @@ on:
 
 jobs:
   lint:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 7c10f84..66efcb2 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -15,7 +15,7 @@ jobs:
           - 1.19.13-bullseye
           - 1.20.13-bullseye
           - 1.21.6-bookworm
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-latest
     container: golang:${{matrix.containers}}
     steps:
       - uses: actions/checkout@v3
diff --git a/chain.go b/chain.go
index 37c4260..838e30a 100644
--- a/chain.go
+++ b/chain.go
@@ -34,6 +34,8 @@ var chainIDs = map[chainIDKey]ChainID{
 	{Polygon, Cardona}:  2442,
 	{Privado, Main}:     21000,
 	{Privado, Test}:     21001,
+	{Billions, Main}:    45056,
+	{Billions, Test}:    6913,
 	{Linea, Main}:       59144,
 	{Linea, Sepolia}:    59141,
 }
diff --git a/did.go b/did.go
index ecbd53d..af02fd9 100644
--- a/did.go
+++ b/did.go
@@ -64,6 +64,8 @@ const (
 	Polygon Blockchain = "polygon"
 	// Privado is Privado blockchain network
 	Privado Blockchain = "privado"
+	// Billions is Billions blockchain network
+	Billions Blockchain = "billions"
 	// Linea is Linea blockchain network
 	Linea Blockchain = "linea"
 	// UnknownChain is used when it's not possible to retrieve blockchain type from identifier
@@ -78,6 +80,7 @@ var blockchains = map[Blockchain]Blockchain{
 	Ethereum:     Ethereum,
 	Polygon:      Polygon,
 	Privado:      Privado,
+	Billions:     Billions,
 	Linea:        Linea,
 	UnknownChain: UnknownChain,
 	ReadOnly:     ReadOnly,
@@ -216,6 +219,9 @@ var blockchainNetworkMap = map[DIDNetworkFlag]byte{
 	{Blockchain: Privado, NetworkID: Main}: 0b1010_0000 | 0b0000_0001,
 	{Blockchain: Privado, NetworkID: Test}: 0b1010_0000 | 0b0000_0010,
 
+	{Blockchain: Billions, NetworkID: Main}: 0b1011_0000 | 0b0000_0001,
+	{Blockchain: Billions, NetworkID: Test}: 0b1011_0000 | 0b0000_0010,
+
 	{Blockchain: Linea, NetworkID: Main}:    0b0100_0000 | 0b0000_1001,
 	{Blockchain: Linea, NetworkID: Sepolia}: 0b0100_0000 | 0b0000_1000,
 }
diff --git a/did_test.go b/did_test.go
index da9cae4..6d20ccc 100644
--- a/did_test.go
+++ b/did_test.go
@@ -215,6 +215,20 @@ func TestDID_Build_From_Types(t *testing.T) {
 			net:     Test,
 			wantDID: "did:iden3:privado:test:2Skqvp4vnSFtq5bgAXbDs1Fs4AA5QGpRut9mCDew5R",
 		},
+		{
+			title:   "Iden3 | Billions chain, main",
+			method:  DIDMethodIden3,
+			chain:   Billions,
+			net:     Main,
+			wantDID: "did:iden3:billions:main:2VmAkXrihYaKzzVRkb3hoFRH3zdjibHXPK2Ahm3xBq",
+		},
+		{
+			title:   "Iden3 | Billions chain, test",
+			method:  DIDMethodIden3,
+			chain:   Billions,
+			net:     Test,
+			wantDID: "did:iden3:billions:test:2VxnoiNqdMPxUigcPf9LTfZdz7jSwQv8YscTjjH5zf",
+		},
 		{
 			title:   "Iden3 | Linea, Main",
 			method:  DIDMethodIden3,