diff --git a/Cargo.lock b/Cargo.lock
index b90a522..d11e8e2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -757,7 +757,7 @@ dependencies = [
 [[package]]
 name = "duniter-bc-reader"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "anyhow",
  "dubp",
@@ -803,7 +803,7 @@ dependencies = [
 [[package]]
 name = "duniter-conf"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "anyhow",
  "dubp",
@@ -817,7 +817,7 @@ dependencies = [
 [[package]]
 name = "duniter-core"
 version = "1.8.1"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "duniter-bc-reader",
  "duniter-conf",
@@ -830,7 +830,7 @@ dependencies = [
 [[package]]
 name = "duniter-dbs"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "arrayvec",
  "bincode",
@@ -853,7 +853,7 @@ dependencies = [
 [[package]]
 name = "duniter-dbs-write-ops"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "chrono",
  "dubp",
@@ -868,7 +868,7 @@ dependencies = [
 [[package]]
 name = "duniter-global"
 version = "1.8.1"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "async-rwlock",
  "dubp",
@@ -1001,7 +1001,7 @@ dependencies = [
 [[package]]
 name = "duniter-mempools"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "dubp",
  "duniter-bc-reader",
@@ -1014,7 +1014,7 @@ dependencies = [
 [[package]]
 name = "duniter-module"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "anyhow",
  "async-mutex",
@@ -1560,7 +1560,7 @@ dependencies = [
 [[package]]
 name = "kv_typed"
 version = "0.1.0"
-source = "git+https://git.duniter.org/nodes/rust/duniter-core#4f26e9e6f687f2c42adf7027bebb34f4ed58e600"
+source = "git+https://git.duniter.org/nodes/rust/duniter-core#193a64f042500c7a0b327fc216db1773a904270c"
 dependencies = [
  "byteorder",
  "cfg-if 0.1.10",
diff --git a/dbs-reader/src/network.rs b/dbs-reader/src/network.rs
index 4ebe0aa..b144c7e 100644
--- a/dbs-reader/src/network.rs
+++ b/dbs-reader/src/network.rs
@@ -14,7 +14,6 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 use crate::*;
-use dubp::crypto::keys::PublicKey as _;
 use duniter_core::dbs::{databases::network_v1::NetworkV1DbReadable, DunpHeadDbV1, PeerCardDbV1};
 
 #[allow(clippy::unnecessary_wraps)]
@@ -51,18 +50,14 @@ impl DbsReaderImpl {
             it.values()
                 .filter_map(|peer_res| {
                     if let Ok(peer) = peer_res {
-                        if let Ok(pubkey) = PublicKey::from_base58(&peer.pubkey) {
-                            let k_min = duniter_core::dbs::DunpNodeIdV1Db::new(0, pubkey);
-                            let k_max = duniter_core::dbs::DunpNodeIdV1Db::new(u32::MAX, pubkey);
-                            Some((
-                                peer,
-                                dunp_db.heads_old().iter(k_min..k_max, |it| {
-                                    it.values().filter_map(|head| head.ok()).collect()
-                                }),
-                            ))
-                        } else {
-                            None
-                        }
+                        let k_min = duniter_core::dbs::DunpNodeIdV1Db::new(0, peer.pubkey);
+                        let k_max = duniter_core::dbs::DunpNodeIdV1Db::new(u32::MAX, peer.pubkey);
+                        Some((
+                            peer,
+                            dunp_db.heads_old().iter(k_min..k_max, |it| {
+                                it.values().filter_map(|head| head.ok()).collect()
+                            }),
+                        ))
                     } else {
                         None
                     }
@@ -75,6 +70,7 @@ impl DbsReaderImpl {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use dubp::crypto::keys::PublicKey as _;
     use duniter_core::dbs::databases::network_v1::NetworkV1DbWritable;
     use duniter_core::dbs::PeerCardDbV1;
 
@@ -155,21 +151,21 @@ mod tests {
         let dunp_db =
             duniter_core::dbs::databases::network_v1::NetworkV1Db::<Mem>::open(MemConf::default())?;
         let db_reader = DbsReaderImpl::mem();
-        let pk = PublicKey::default();
+        let pubkey = PublicKey::default();
 
         dunp_db.peers_old_write().upsert(
-            PubKeyKeyV2(pk),
+            PubKeyKeyV2(pubkey),
             PeerCardDbV1 {
-                pubkey: pk.to_string(),
+                pubkey,
                 ..Default::default()
             },
         )?;
         dunp_db.heads_old_write().upsert(
-            duniter_core::dbs::DunpNodeIdV1Db::new(42, pk),
+            duniter_core::dbs::DunpNodeIdV1Db::new(42, pubkey),
             DunpHeadDbV1::default(),
         )?;
         dunp_db.heads_old_write().upsert(
-            duniter_core::dbs::DunpNodeIdV1Db::new(43, pk),
+            duniter_core::dbs::DunpNodeIdV1Db::new(43, pubkey),
             DunpHeadDbV1 {
                 pubkey: PublicKey::from_base58("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")
                     .expect("invalid pubkey"),
@@ -181,7 +177,7 @@ mod tests {
             db_reader.peers_and_heads(&dunp_db)?,
             vec![(
                 PeerCardDbV1 {
-                    pubkey: pk.to_string(),
+                    pubkey,
                     ..Default::default()
                 },
                 vec![
diff --git a/gql/src/entities/network.rs b/gql/src/entities/network.rs
index 4e06590..a195cb3 100644
--- a/gql/src/entities/network.rs
+++ b/gql/src/entities/network.rs
@@ -1,3 +1,5 @@
+use dubp::crypto::{bases::b58::ToBase58, keys::Signature};
+
 //  Copyright (C) 2020 Éloïs SANCHEZ.
 //
 // This program is free software: you can redistribute it and/or modify
@@ -29,11 +31,11 @@ impl From<duniter_core::dbs::PeerCardDbV1> for PeerCardGva {
         Self {
             version: peer.version,
             currency: peer.currency,
-            pubkey: peer.pubkey,
-            blockstamp: peer.blockstamp,
+            pubkey: peer.pubkey.to_base58(),
+            blockstamp: peer.blockstamp.to_string(),
             endpoints: peer.endpoints,
-            status: peer.status,
-            signature: peer.signature,
+            status: if peer.status { "UP" } else { "DOWN" }.to_owned(),
+            signature: peer.signature.to_base64(),
         }
     }
 }