diff --git a/substrate/bin/node-template/pallets/template/src/mock.rs b/substrate/bin/node-template/pallets/template/src/mock.rs
index 84af63a1c3..60d22aad7b 100644
--- a/substrate/bin/node-template/pallets/template/src/mock.rs
+++ b/substrate/bin/node-template/pallets/template/src/mock.rs
@@ -16,6 +16,7 @@ impl_outer_origin! {
 pub struct Test;
 parameter_types! {
 	pub const BlockHashCount: u64 = 250;
+	pub const SS58Prefix: u8 = 42;
 }
 
 impl system::Config for Test {
@@ -40,6 +41,7 @@ impl system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = SS58Prefix;
 }
 
 impl Config for Test {
diff --git a/substrate/bin/node-template/runtime/src/lib.rs b/substrate/bin/node-template/runtime/src/lib.rs
index 51df3dd5a3..0812346779 100644
--- a/substrate/bin/node-template/runtime/src/lib.rs
+++ b/substrate/bin/node-template/runtime/src/lib.rs
@@ -136,6 +136,7 @@ parameter_types! {
 		::with_sensible_defaults(2 * WEIGHT_PER_SECOND, NORMAL_DISPATCH_RATIO);
 	pub BlockLength: frame_system::limits::BlockLength = frame_system::limits::BlockLength
 		::max_with_normal_ratio(5 * 1024 * 1024, NORMAL_DISPATCH_RATIO);
+	pub const SS58Prefix: u8 = 42;
 }
 
 // Configure FRAME pallets to include in runtime.
@@ -185,6 +186,8 @@ impl frame_system::Config for Runtime {
 	type AccountData = pallet_balances::AccountData<Balance>;
 	/// Weight information for the extrinsics of this pallet.
 	type SystemWeightInfo = ();
+	/// This is used as an identifier of the chain. 42 is the generic substrate prefix.
+	type SS58Prefix = SS58Prefix;
 }
 
 impl pallet_aura::Config for Runtime {
diff --git a/substrate/bin/node/runtime/src/lib.rs b/substrate/bin/node/runtime/src/lib.rs
index a86b015dbc..4eee9d83a5 100644
--- a/substrate/bin/node/runtime/src/lib.rs
+++ b/substrate/bin/node/runtime/src/lib.rs
@@ -176,6 +176,7 @@ parameter_types! {
 		})
 		.avg_block_initialization(AVERAGE_ON_INITIALIZE_RATIO)
 		.build_or_panic();
+	pub const SS58Prefix: u8 = 42;
 }
 
 const_assert!(NORMAL_DISPATCH_RATIO.deconstruct() >= AVERAGE_ON_INITIALIZE_RATIO.deconstruct());
@@ -202,6 +203,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = frame_system::weights::SubstrateWeight<Runtime>;
+	type SS58Prefix = SS58Prefix;
 }
 
 impl pallet_utility::Config for Runtime {
diff --git a/substrate/frame/assets/src/lib.rs b/substrate/frame/assets/src/lib.rs
index df1cb87f75..137ba81f38 100644
--- a/substrate/frame/assets/src/lib.rs
+++ b/substrate/frame/assets/src/lib.rs
@@ -952,6 +952,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	parameter_types! {
diff --git a/substrate/frame/atomic-swap/src/tests.rs b/substrate/frame/atomic-swap/src/tests.rs
index 47b5102bc5..19f5fc1dff 100644
--- a/substrate/frame/atomic-swap/src/tests.rs
+++ b/substrate/frame/atomic-swap/src/tests.rs
@@ -42,6 +42,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/aura/src/mock.rs b/substrate/frame/aura/src/mock.rs
index 1fcb1c2340..8d5cbcc9b7 100644
--- a/substrate/frame/aura/src/mock.rs
+++ b/substrate/frame/aura/src/mock.rs
@@ -66,6 +66,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl pallet_timestamp::Config for Test {
diff --git a/substrate/frame/authority-discovery/src/lib.rs b/substrate/frame/authority-discovery/src/lib.rs
index 2d275e01bb..5932142175 100644
--- a/substrate/frame/authority-discovery/src/lib.rs
+++ b/substrate/frame/authority-discovery/src/lib.rs
@@ -164,6 +164,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	impl_outer_origin! {
diff --git a/substrate/frame/authorship/src/lib.rs b/substrate/frame/authorship/src/lib.rs
index 693375e3c5..3672174e25 100644
--- a/substrate/frame/authorship/src/lib.rs
+++ b/substrate/frame/authorship/src/lib.rs
@@ -438,6 +438,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	parameter_types! {
diff --git a/substrate/frame/babe/src/mock.rs b/substrate/frame/babe/src/mock.rs
index 77b117db7f..f8805f7a10 100644
--- a/substrate/frame/babe/src/mock.rs
+++ b/substrate/frame/babe/src/mock.rs
@@ -86,6 +86,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Test
diff --git a/substrate/frame/balances/src/tests_composite.rs b/substrate/frame/balances/src/tests_composite.rs
index 81c2b89527..f98194c503 100644
--- a/substrate/frame/balances/src/tests_composite.rs
+++ b/substrate/frame/balances/src/tests_composite.rs
@@ -77,6 +77,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const TransactionByteFee: u64 = 1;
diff --git a/substrate/frame/balances/src/tests_local.rs b/substrate/frame/balances/src/tests_local.rs
index c168e1d8e5..e9d6fe2530 100644
--- a/substrate/frame/balances/src/tests_local.rs
+++ b/substrate/frame/balances/src/tests_local.rs
@@ -78,6 +78,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = Module<Test>;
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const TransactionByteFee: u64 = 1;
diff --git a/substrate/frame/benchmarking/src/tests.rs b/substrate/frame/benchmarking/src/tests.rs
index f86abebbb9..e31f5ec091 100644
--- a/substrate/frame/benchmarking/src/tests.rs
+++ b/substrate/frame/benchmarking/src/tests.rs
@@ -94,6 +94,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl Config for Test {
diff --git a/substrate/frame/bounties/src/tests.rs b/substrate/frame/bounties/src/tests.rs
index 4ebff64b4e..bcf371eae4 100644
--- a/substrate/frame/bounties/src/tests.rs
+++ b/substrate/frame/bounties/src/tests.rs
@@ -82,6 +82,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/collective/src/lib.rs b/substrate/frame/collective/src/lib.rs
index efc8626d68..1448bd9bc3 100644
--- a/substrate/frame/collective/src/lib.rs
+++ b/substrate/frame/collective/src/lib.rs
@@ -996,6 +996,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	impl Config<Instance1> for Test {
 		type Origin = Origin;
diff --git a/substrate/frame/contracts/src/tests.rs b/substrate/frame/contracts/src/tests.rs
index 6ac2fb0f97..991a89563e 100644
--- a/substrate/frame/contracts/src/tests.rs
+++ b/substrate/frame/contracts/src/tests.rs
@@ -130,6 +130,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet_balances::Config for Test {
 	type MaxLocks = ();
diff --git a/substrate/frame/democracy/src/tests.rs b/substrate/frame/democracy/src/tests.rs
index dae3a26220..0e369bf3bd 100644
--- a/substrate/frame/democracy/src/tests.rs
+++ b/substrate/frame/democracy/src/tests.rs
@@ -113,6 +113,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub MaximumSchedulerWeight: Weight = Perbill::from_percent(80) * BlockWeights::get().max_block;
diff --git a/substrate/frame/elections-phragmen/src/lib.rs b/substrate/frame/elections-phragmen/src/lib.rs
index b541303f65..9b7b9064fb 100644
--- a/substrate/frame/elections-phragmen/src/lib.rs
+++ b/substrate/frame/elections-phragmen/src/lib.rs
@@ -1099,6 +1099,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+	type SS58Prefix = ();
 	}
 
 	parameter_types! {
diff --git a/substrate/frame/elections/src/mock.rs b/substrate/frame/elections/src/mock.rs
index 482c905f89..8a4111a38c 100644
--- a/substrate/frame/elections/src/mock.rs
+++ b/substrate/frame/elections/src/mock.rs
@@ -57,6 +57,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/example-offchain-worker/src/tests.rs b/substrate/frame/example-offchain-worker/src/tests.rs
index 196d4cac4a..a94174a33b 100644
--- a/substrate/frame/example-offchain-worker/src/tests.rs
+++ b/substrate/frame/example-offchain-worker/src/tests.rs
@@ -76,6 +76,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 type Extrinsic = TestXt<Call<Test>, ()>;
diff --git a/substrate/frame/example-parallel/src/tests.rs b/substrate/frame/example-parallel/src/tests.rs
index 24e846c3de..3da41b2218 100644
--- a/substrate/frame/example-parallel/src/tests.rs
+++ b/substrate/frame/example-parallel/src/tests.rs
@@ -59,6 +59,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/example/src/lib.rs b/substrate/frame/example/src/lib.rs
index 3ddb2fd4c1..14c40778ba 100644
--- a/substrate/frame/example/src/lib.rs
+++ b/substrate/frame/example/src/lib.rs
@@ -764,6 +764,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	parameter_types! {
 		pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/executive/src/lib.rs b/substrate/frame/executive/src/lib.rs
index caba857254..cb45a49b23 100644
--- a/substrate/frame/executive/src/lib.rs
+++ b/substrate/frame/executive/src/lib.rs
@@ -618,6 +618,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	type Balance = u64;
diff --git a/substrate/frame/grandpa/src/mock.rs b/substrate/frame/grandpa/src/mock.rs
index ae13c94659..288ef47a8e 100644
--- a/substrate/frame/grandpa/src/mock.rs
+++ b/substrate/frame/grandpa/src/mock.rs
@@ -100,6 +100,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl<C> frame_system::offchain::SendTransactionTypes<C> for Test
diff --git a/substrate/frame/identity/src/tests.rs b/substrate/frame/identity/src/tests.rs
index 7f3a95dcd1..04e6bb7df3 100644
--- a/substrate/frame/identity/src/tests.rs
+++ b/substrate/frame/identity/src/tests.rs
@@ -63,6 +63,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/im-online/src/mock.rs b/substrate/frame/im-online/src/mock.rs
index 0a6dc1f79c..71dc3d52ac 100644
--- a/substrate/frame/im-online/src/mock.rs
+++ b/substrate/frame/im-online/src/mock.rs
@@ -130,6 +130,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/indices/src/mock.rs b/substrate/frame/indices/src/mock.rs
index 63f0277548..0e1e9c3d43 100644
--- a/substrate/frame/indices/src/mock.rs
+++ b/substrate/frame/indices/src/mock.rs
@@ -69,6 +69,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/membership/src/lib.rs b/substrate/frame/membership/src/lib.rs
index cfdc38752b..943071c9a1 100644
--- a/substrate/frame/membership/src/lib.rs
+++ b/substrate/frame/membership/src/lib.rs
@@ -321,6 +321,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	ord_parameter_types! {
 		pub const One: u64 = 1;
diff --git a/substrate/frame/merkle-mountain-range/src/mock.rs b/substrate/frame/merkle-mountain-range/src/mock.rs
index c311d53446..4865ea7e57 100644
--- a/substrate/frame/merkle-mountain-range/src/mock.rs
+++ b/substrate/frame/merkle-mountain-range/src/mock.rs
@@ -63,6 +63,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl Config for Test {
diff --git a/substrate/frame/multisig/src/tests.rs b/substrate/frame/multisig/src/tests.rs
index 7a959ec37f..4101b718bc 100644
--- a/substrate/frame/multisig/src/tests.rs
+++ b/substrate/frame/multisig/src/tests.rs
@@ -80,6 +80,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/nicks/src/lib.rs b/substrate/frame/nicks/src/lib.rs
index 2b74f323d8..994e6996a1 100644
--- a/substrate/frame/nicks/src/lib.rs
+++ b/substrate/frame/nicks/src/lib.rs
@@ -283,6 +283,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	parameter_types! {
 		pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/node-authorization/src/lib.rs b/substrate/frame/node-authorization/src/lib.rs
index 9641bea116..e48faef128 100644
--- a/substrate/frame/node-authorization/src/lib.rs
+++ b/substrate/frame/node-authorization/src/lib.rs
@@ -472,6 +472,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	ord_parameter_types! {
diff --git a/substrate/frame/offences/benchmarking/src/mock.rs b/substrate/frame/offences/benchmarking/src/mock.rs
index e55d7ac8e3..2a93bfa2c8 100644
--- a/substrate/frame/offences/benchmarking/src/mock.rs
+++ b/substrate/frame/offences/benchmarking/src/mock.rs
@@ -63,6 +63,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = (Balances,);
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: Balance = 10;
diff --git a/substrate/frame/offences/src/mock.rs b/substrate/frame/offences/src/mock.rs
index 124b003029..7d23780b12 100644
--- a/substrate/frame/offences/src/mock.rs
+++ b/substrate/frame/offences/src/mock.rs
@@ -116,6 +116,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/proxy/src/tests.rs b/substrate/frame/proxy/src/tests.rs
index b1dca43b6a..b3f9ebc75d 100644
--- a/substrate/frame/proxy/src/tests.rs
+++ b/substrate/frame/proxy/src/tests.rs
@@ -82,6 +82,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/randomness-collective-flip/src/lib.rs b/substrate/frame/randomness-collective-flip/src/lib.rs
index 9332262d68..04db12d1df 100644
--- a/substrate/frame/randomness-collective-flip/src/lib.rs
+++ b/substrate/frame/randomness-collective-flip/src/lib.rs
@@ -180,6 +180,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	type System = frame_system::Module<Test>;
diff --git a/substrate/frame/recovery/src/mock.rs b/substrate/frame/recovery/src/mock.rs
index 9b991987ce..1303376784 100644
--- a/substrate/frame/recovery/src/mock.rs
+++ b/substrate/frame/recovery/src/mock.rs
@@ -78,6 +78,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 parameter_types! {
diff --git a/substrate/frame/scheduler/src/lib.rs b/substrate/frame/scheduler/src/lib.rs
index 9f0f806233..67b86fad82 100644
--- a/substrate/frame/scheduler/src/lib.rs
+++ b/substrate/frame/scheduler/src/lib.rs
@@ -837,6 +837,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+	type SS58Prefix = ();
 	}
 	impl logger::Config for Test {
 		type Event = ();
diff --git a/substrate/frame/scored-pool/src/mock.rs b/substrate/frame/scored-pool/src/mock.rs
index 7d49136cef..b96daf6ba3 100644
--- a/substrate/frame/scored-pool/src/mock.rs
+++ b/substrate/frame/scored-pool/src/mock.rs
@@ -68,6 +68,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl pallet_balances::Config for Test {
diff --git a/substrate/frame/session/benchmarking/src/mock.rs b/substrate/frame/session/benchmarking/src/mock.rs
index 9001dee879..db6c465854 100644
--- a/substrate/frame/session/benchmarking/src/mock.rs
+++ b/substrate/frame/session/benchmarking/src/mock.rs
@@ -67,6 +67,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = Balances;
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: Balance = 10;
diff --git a/substrate/frame/session/src/mock.rs b/substrate/frame/session/src/mock.rs
index fa71859feb..e69eec14b0 100644
--- a/substrate/frame/session/src/mock.rs
+++ b/substrate/frame/session/src/mock.rs
@@ -218,6 +218,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl pallet_timestamp::Config for Test {
diff --git a/substrate/frame/society/src/mock.rs b/substrate/frame/society/src/mock.rs
index 6a718c2185..c704008067 100644
--- a/substrate/frame/society/src/mock.rs
+++ b/substrate/frame/society/src/mock.rs
@@ -78,6 +78,7 @@ impl frame_system::Config for Test {
 	type OnKilledAccount = ();
 	type AccountData = pallet_balances::AccountData<u64>;
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl pallet_balances::Config for Test {
diff --git a/substrate/frame/staking/fuzzer/src/mock.rs b/substrate/frame/staking/fuzzer/src/mock.rs
index 6f58d6a669..ca36bfb4c3 100644
--- a/substrate/frame/staking/fuzzer/src/mock.rs
+++ b/substrate/frame/staking/fuzzer/src/mock.rs
@@ -65,6 +65,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = (Balances,);
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: Balance = 10;
diff --git a/substrate/frame/staking/src/mock.rs b/substrate/frame/staking/src/mock.rs
index f3c6d50d4c..6f7842b6b5 100644
--- a/substrate/frame/staking/src/mock.rs
+++ b/substrate/frame/staking/src/mock.rs
@@ -166,6 +166,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet_balances::Config for Test {
 	type MaxLocks = MaxLocks;
diff --git a/substrate/frame/sudo/src/mock.rs b/substrate/frame/sudo/src/mock.rs
index 12707d3e9d..5a0919b8d7 100644
--- a/substrate/frame/sudo/src/mock.rs
+++ b/substrate/frame/sudo/src/mock.rs
@@ -139,6 +139,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 // Implement the logger module's `Config` on the Test runtime.
diff --git a/substrate/frame/support/test/tests/pallet.rs b/substrate/frame/support/test/tests/pallet.rs
index 5d2785ebf2..e05a0e9bdf 100644
--- a/substrate/frame/support/test/tests/pallet.rs
+++ b/substrate/frame/support/test/tests/pallet.rs
@@ -364,6 +364,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet::Config for Runtime {
 	type Event = Event;
diff --git a/substrate/frame/support/test/tests/pallet_compatibility.rs b/substrate/frame/support/test/tests/pallet_compatibility.rs
index 912d68baed..5711326300 100644
--- a/substrate/frame/support/test/tests/pallet_compatibility.rs
+++ b/substrate/frame/support/test/tests/pallet_compatibility.rs
@@ -226,6 +226,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet::Config for Runtime {
 	type Event = Event;
diff --git a/substrate/frame/support/test/tests/pallet_compatibility_instance.rs b/substrate/frame/support/test/tests/pallet_compatibility_instance.rs
index d2f7a6668c..cdcc6a99cf 100644
--- a/substrate/frame/support/test/tests/pallet_compatibility_instance.rs
+++ b/substrate/frame/support/test/tests/pallet_compatibility_instance.rs
@@ -218,6 +218,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet::Config for Runtime {
 	type Event = Event;
diff --git a/substrate/frame/support/test/tests/pallet_instance.rs b/substrate/frame/support/test/tests/pallet_instance.rs
index 82b058b7bd..caa9019edf 100644
--- a/substrate/frame/support/test/tests/pallet_instance.rs
+++ b/substrate/frame/support/test/tests/pallet_instance.rs
@@ -259,6 +259,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 impl pallet::Config for Runtime {
 	type Event = Event;
diff --git a/substrate/frame/support/test/tests/pallet_version.rs b/substrate/frame/support/test/tests/pallet_version.rs
index 25320597ba..e70d752e40 100644
--- a/substrate/frame/support/test/tests/pallet_version.rs
+++ b/substrate/frame/support/test/tests/pallet_version.rs
@@ -165,6 +165,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 frame_support::construct_runtime!(
diff --git a/substrate/frame/support/test/tests/pallet_with_name_trait_is_valid.rs b/substrate/frame/support/test/tests/pallet_with_name_trait_is_valid.rs
index 01b965f3b5..fba1959489 100644
--- a/substrate/frame/support/test/tests/pallet_with_name_trait_is_valid.rs
+++ b/substrate/frame/support/test/tests/pallet_with_name_trait_is_valid.rs
@@ -141,6 +141,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	impl pallet_test::Trait for Runtime {
diff --git a/substrate/frame/system/benches/bench.rs b/substrate/frame/system/benches/bench.rs
index 4909317488..2e5d629218 100644
--- a/substrate/frame/system/benches/bench.rs
+++ b/substrate/frame/system/benches/bench.rs
@@ -87,6 +87,7 @@ impl system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl module::Config for Runtime {
diff --git a/substrate/frame/system/benchmarking/src/mock.rs b/substrate/frame/system/benchmarking/src/mock.rs
index 8cfd70b2f0..686db8fb5a 100644
--- a/substrate/frame/system/benchmarking/src/mock.rs
+++ b/substrate/frame/system/benchmarking/src/mock.rs
@@ -72,6 +72,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl crate::Config for Test {}
diff --git a/substrate/frame/system/src/lib.rs b/substrate/frame/system/src/lib.rs
index a89577a478..a8ffd05bf6 100644
--- a/substrate/frame/system/src/lib.rs
+++ b/substrate/frame/system/src/lib.rs
@@ -257,6 +257,13 @@ pub trait Config: 'static + Eq + Clone {
 	type OnKilledAccount: OnKilledAccount<Self::AccountId>;
 
 	type SystemWeightInfo: WeightInfo;
+
+	/// The designated SS85 prefix of this chain.
+	///
+	/// This replaces the "ss58Format" property declared in the chain spec. Reason is
+	/// that the runtime should know about the prefix in order to make use of it as
+	/// an identifier of the chain.
+	type SS58Prefix: Get<u8>;
 }
 
 pub type DigestOf<T> = generic::Digest<<T as Config>::Hash>;
@@ -516,6 +523,13 @@ decl_module! {
 		/// The weight configuration (limits & base values) for each class of extrinsics and block.
 		const BlockWeights: limits::BlockWeights = T::BlockWeights::get();
 
+		/// The designated SS85 prefix of this chain.
+		///
+		/// This replaces the "ss58Format" property declared in the chain spec. Reason is
+		/// that the runtime should know about the prefix in order to make use of it as
+		/// an identifier of the chain.
+		const SS58Prefix: u8 = T::SS58Prefix::get();
+
 		fn on_runtime_upgrade() -> frame_support::weights::Weight {
 			if !UpgradedToU32RefCount::get() {
 				Account::<T>::translate::<(T::Index, u8, T::AccountData), _>(|_key, (nonce, rc, data)|
diff --git a/substrate/frame/system/src/mock.rs b/substrate/frame/system/src/mock.rs
index 1558a5ed39..e22f5870ee 100644
--- a/substrate/frame/system/src/mock.rs
+++ b/substrate/frame/system/src/mock.rs
@@ -117,6 +117,7 @@ impl Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = RecordKilled;
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 pub type System = Module<Test>;
diff --git a/substrate/frame/timestamp/src/lib.rs b/substrate/frame/timestamp/src/lib.rs
index b62777832a..423f7f5128 100644
--- a/substrate/frame/timestamp/src/lib.rs
+++ b/substrate/frame/timestamp/src/lib.rs
@@ -335,6 +335,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	parameter_types! {
 		pub const MinimumPeriod: u64 = 5;
diff --git a/substrate/frame/tips/src/tests.rs b/substrate/frame/tips/src/tests.rs
index 3bfecafeaf..15f3481ba2 100644
--- a/substrate/frame/tips/src/tests.rs
+++ b/substrate/frame/tips/src/tests.rs
@@ -81,6 +81,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
@@ -292,28 +293,28 @@ fn slash_tip_works() {
 		System::set_block_number(1);
 		Balances::make_free_balance_be(&Treasury::account_id(), 101);
 		assert_eq!(Treasury::pot(), 100);
-		
+
 		assert_eq!(Balances::reserved_balance(0), 0);
 		assert_eq!(Balances::free_balance(0), 100);
-		
+
 		assert_ok!(TipsModTestInst::report_awesome(Origin::signed(0), b"awesome.dot".to_vec(), 3));
-		
+
 		assert_eq!(Balances::reserved_balance(0), 12);
 		assert_eq!(Balances::free_balance(0), 88);
-		
+
 		let h = tip_hash();
 		assert_eq!(last_event(), RawEvent::NewTip(h));
-		
+
 		// can't remove from any origin
 		assert_noop!(
 			TipsModTestInst::slash_tip(Origin::signed(0), h.clone()),
 			BadOrigin,
 		);
-		
+
 		// can remove from root.
 		assert_ok!(TipsModTestInst::slash_tip(Origin::root(), h.clone()));
 		assert_eq!(last_event(), RawEvent::TipSlashed(h, 0, 12));
-		
+
 		// tipper slashed
 		assert_eq!(Balances::reserved_balance(0), 0);
 		assert_eq!(Balances::free_balance(0), 88);
diff --git a/substrate/frame/transaction-payment/src/lib.rs b/substrate/frame/transaction-payment/src/lib.rs
index e530380dfb..a787836d24 100644
--- a/substrate/frame/transaction-payment/src/lib.rs
+++ b/substrate/frame/transaction-payment/src/lib.rs
@@ -662,6 +662,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 
 	parameter_types! {
diff --git a/substrate/frame/treasury/src/tests.rs b/substrate/frame/treasury/src/tests.rs
index 8db303a426..4d0bdf32e4 100644
--- a/substrate/frame/treasury/src/tests.rs
+++ b/substrate/frame/treasury/src/tests.rs
@@ -80,6 +80,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/utility/src/tests.rs b/substrate/frame/utility/src/tests.rs
index 95973a8823..4837be6952 100644
--- a/substrate/frame/utility/src/tests.rs
+++ b/substrate/frame/utility/src/tests.rs
@@ -118,6 +118,7 @@ impl frame_system::Config for Test {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 parameter_types! {
 	pub const ExistentialDeposit: u64 = 1;
diff --git a/substrate/frame/vesting/src/lib.rs b/substrate/frame/vesting/src/lib.rs
index a7a8147a06..6a65e58d41 100644
--- a/substrate/frame/vesting/src/lib.rs
+++ b/substrate/frame/vesting/src/lib.rs
@@ -433,6 +433,7 @@ mod tests {
 		type OnNewAccount = ();
 		type OnKilledAccount = ();
 		type SystemWeightInfo = ();
+		type SS58Prefix = ();
 	}
 	parameter_types! {
 		pub const MaxLocks: u32 = 10;
diff --git a/substrate/primitives/externalities/src/lib.rs b/substrate/primitives/externalities/src/lib.rs
index 6869969f4b..a6596a22d1 100644
--- a/substrate/primitives/externalities/src/lib.rs
+++ b/substrate/primitives/externalities/src/lib.rs
@@ -170,9 +170,6 @@ pub trait Externalities: ExtensionStore {
 		value: Option<Vec<u8>>,
 	);
 
-	/// Get the identity of the chain.
-	fn chain_id(&self) -> u64;
-
 	/// Get the trie root of the current storage map.
 	///
 	/// This will also update all child storage keys in the top-level storage map.
diff --git a/substrate/primitives/io/src/lib.rs b/substrate/primitives/io/src/lib.rs
index 023bf7dcb3..dba984f433 100644
--- a/substrate/primitives/io/src/lib.rs
+++ b/substrate/primitives/io/src/lib.rs
@@ -388,11 +388,6 @@ pub trait Trie {
 /// Interface that provides miscellaneous functions for communicating between the runtime and the node.
 #[runtime_interface]
 pub trait Misc {
-	/// The current relay chain identifier.
-	fn chain_id(&self) -> u64 {
-		sp_externalities::Externalities::chain_id(*self)
-	}
-
 	/// Print a number.
 	fn print_num(val: u64) {
 		log::debug!(target: "runtime", "{}", val);
diff --git a/substrate/primitives/state-machine/src/basic.rs b/substrate/primitives/state-machine/src/basic.rs
index 9de75785e4..def0eecf70 100644
--- a/substrate/primitives/state-machine/src/basic.rs
+++ b/substrate/primitives/state-machine/src/basic.rs
@@ -263,8 +263,6 @@ impl Externalities for BasicExternalities {
 		crate::ext::StorageAppend::new(current).append(value);
 	}
 
-	fn chain_id(&self) -> u64 { 42 }
-
 	fn storage_root(&mut self) -> Vec<u8> {
 		let mut top = self.inner.top.clone();
 		let prefixed_keys: Vec<_> = self.inner.children_default.iter().map(|(_k, v)| {
diff --git a/substrate/primitives/state-machine/src/ext.rs b/substrate/primitives/state-machine/src/ext.rs
index 3c4d88f392..c46d0d56be 100644
--- a/substrate/primitives/state-machine/src/ext.rs
+++ b/substrate/primitives/state-machine/src/ext.rs
@@ -507,10 +507,6 @@ where
 		StorageAppend::new(current_value).append(value);
 	}
 
-	fn chain_id(&self) -> u64 {
-		42
-	}
-
 	fn storage_root(&mut self) -> Vec<u8> {
 		let _guard = guard();
 		if let Some(ref root) = self.storage_transaction_cache.transaction_storage_root {
diff --git a/substrate/primitives/state-machine/src/read_only.rs b/substrate/primitives/state-machine/src/read_only.rs
index 2ab92f5fbb..ba9984a6c7 100644
--- a/substrate/primitives/state-machine/src/read_only.rs
+++ b/substrate/primitives/state-machine/src/read_only.rs
@@ -156,8 +156,6 @@ impl<'a, H: Hasher, B: 'a + Backend<H>> Externalities for ReadOnlyExternalities<
 		unimplemented!("storage_append is not supported in ReadOnlyExternalities")
 	}
 
-	fn chain_id(&self) -> u64 { 42 }
-
 	fn storage_root(&mut self) -> Vec<u8> {
 		unimplemented!("storage_root is not supported in ReadOnlyExternalities")
 	}
diff --git a/substrate/primitives/tasks/src/async_externalities.rs b/substrate/primitives/tasks/src/async_externalities.rs
index efb4c498f7..e2afeee413 100644
--- a/substrate/primitives/tasks/src/async_externalities.rs
+++ b/substrate/primitives/tasks/src/async_externalities.rs
@@ -143,8 +143,6 @@ impl Externalities for AsyncExternalities {
 		panic!("`storage_append`: should not be used in async externalities!")
 	}
 
-	fn chain_id(&self) -> u64 { 42 }
-
 	fn storage_root(&mut self) -> Vec<u8> {
 		panic!("`storage_root`: should not be used in async externalities!")
 	}
diff --git a/substrate/test-utils/runtime/src/lib.rs b/substrate/test-utils/runtime/src/lib.rs
index 6bee4b704f..3e5ab8f697 100644
--- a/substrate/test-utils/runtime/src/lib.rs
+++ b/substrate/test-utils/runtime/src/lib.rs
@@ -462,6 +462,7 @@ impl frame_system::Config for Runtime {
 	type OnNewAccount = ();
 	type OnKilledAccount = ();
 	type SystemWeightInfo = ();
+	type SS58Prefix = ();
 }
 
 impl pallet_timestamp::Config for Runtime {