diff --git a/crypto/keys/ed25519.rs b/crypto/keys/ed25519.rs
index 2ed603663b048770633b8277ba1749993c151705..f239e51bd823f66f7c4ed1e235b8faaf9de88b9a 100644
--- a/crypto/keys/ed25519.rs
+++ b/crypto/keys/ed25519.rs
@@ -19,6 +19,8 @@
 //!
 //! [`KeyPairGenerator`]: struct.KeyPairGenerator.html
 
+extern crate serde;
+
 use std::collections::hash_map::DefaultHasher;
 use std::fmt::Display;
 use std::fmt::Error;
@@ -30,6 +32,7 @@ use base58::{FromBase58, FromBase58Error, ToBase58};
 use base64;
 use base64::DecodeError;
 use crypto;
+use self::serde::ser::{Serialize, Serializer};
 
 use super::{BaseConvertionError, PrivateKey as PrivateKeyMethods, PublicKey as PublicKeyMethods};
 
@@ -123,6 +126,15 @@ impl Debug for PublicKey {
     }
 }
 
+impl Serialize for PublicKey {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&format!("{}", self))
+    }
+}
+
 impl super::PublicKey for PublicKey {
     type Signature = Signature;
 
diff --git a/documents/blockchain/v10/documents/certification.rs b/documents/blockchain/v10/documents/certification.rs
index 6c0e3c0fe15c35011ef15bbebfe223464ae5f551..cc841f9de5d7a31a4abace5f242e4d7f8bd5c111 100644
--- a/documents/blockchain/v10/documents/certification.rs
+++ b/documents/blockchain/v10/documents/certification.rs
@@ -15,8 +15,11 @@
 
 //! Wrappers around Certification documents.
 
+extern crate serde;
+
 use duniter_crypto::keys::{PublicKey, Signature, ed25519};
 use regex::Regex;
+use self::serde::ser::{Serialize, Serializer};
 
 use Blockstamp;
 use blockchain::{BlockchainProtocol, Document, DocumentBuilder, IntoSpecializedDocument};
@@ -120,6 +123,15 @@ impl TextDocument for CertificationDocument {
     }
 }
 
+impl Serialize for CertificationDocument {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.generate_compact_text())
+    }
+}
+
 impl IntoSpecializedDocument<BlockchainProtocol> for CertificationDocument {
     fn into_specialized(self) -> BlockchainProtocol {
         BlockchainProtocol::V10(Box::new(V10Document::Certification(Box::new(self))))
diff --git a/documents/blockchain/v10/documents/identity.rs b/documents/blockchain/v10/documents/identity.rs
index cf40450c53ea1e4971b4c8448f06b62349179892..ed9de1608edb6fd2085c3329e44652c0da28bca6 100644
--- a/documents/blockchain/v10/documents/identity.rs
+++ b/documents/blockchain/v10/documents/identity.rs
@@ -15,8 +15,11 @@
 
 //! Wrappers around Identity documents.
 
+extern crate serde;
+
 use duniter_crypto::keys::{PublicKey, ed25519};
 use regex::Regex;
+use self::serde::ser::{Serialize, Serializer};
 
 use Blockstamp;
 use blockchain::{BlockchainProtocol, Document, DocumentBuilder, IntoSpecializedDocument};
@@ -100,6 +103,15 @@ impl TextDocument for IdentityDocument {
     }
 }
 
+impl Serialize for IdentityDocument {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.generate_compact_text())
+    }
+}
+
 impl IntoSpecializedDocument<BlockchainProtocol> for IdentityDocument {
     fn into_specialized(self) -> BlockchainProtocol {
         BlockchainProtocol::V10(Box::new(V10Document::Identity(self)))
diff --git a/documents/blockchain/v10/documents/membership.rs b/documents/blockchain/v10/documents/membership.rs
index b8e5652b45ea912cb35af050a0f8742629bdd677..061dc808025602bc56e5fa995008f7608caa9bed 100644
--- a/documents/blockchain/v10/documents/membership.rs
+++ b/documents/blockchain/v10/documents/membership.rs
@@ -15,8 +15,11 @@
 
 //! Wrappers around Membership documents.
 
+extern crate serde;
+
 use duniter_crypto::keys::{PublicKey, ed25519};
 use regex::Regex;
+use self::serde::ser::{Serialize, Serializer};
 
 use Blockstamp;
 use blockchain::{BlockchainProtocol, Document, DocumentBuilder, IntoSpecializedDocument};
@@ -122,6 +125,15 @@ impl TextDocument for MembershipDocument {
     }
 }
 
+impl Serialize for MembershipDocument {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.generate_compact_text())
+    }
+}
+
 impl IntoSpecializedDocument<BlockchainProtocol> for MembershipDocument {
     fn into_specialized(self) -> BlockchainProtocol {
         BlockchainProtocol::V10(Box::new(V10Document::Membership(self)))
diff --git a/documents/blockchain/v10/documents/revocation.rs b/documents/blockchain/v10/documents/revocation.rs
index 43b58913a7d9698f0be6f3a6806ee03a1b0e48c8..4ba5f7773abd5d6f46612dd9adc31113357fabe9 100644
--- a/documents/blockchain/v10/documents/revocation.rs
+++ b/documents/blockchain/v10/documents/revocation.rs
@@ -15,8 +15,11 @@
 
 //! Wrappers around Revocation documents.
 
+extern crate serde;
+
 use duniter_crypto::keys::{PublicKey, Signature, ed25519};
 use regex::Regex;
+use self::serde::ser::{Serialize, Serializer};
 
 use Blockstamp;
 use blockchain::{BlockchainProtocol, Document, DocumentBuilder, IntoSpecializedDocument};
@@ -102,6 +105,15 @@ impl TextDocument for RevocationDocument {
     }
 }
 
+impl Serialize for RevocationDocument {
+    fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        serializer.serialize_str(&self.generate_compact_text())
+    }
+}
+
 impl IntoSpecializedDocument<BlockchainProtocol> for RevocationDocument {
     fn into_specialized(self) -> BlockchainProtocol {
         BlockchainProtocol::V10(Box::new(V10Document::Revocation(Box::new(self))))
diff --git a/documents/lib.rs b/documents/lib.rs
index 702879a4d0b2915cc92bb87e4f198531e7e34ebf..f89b5accf124c8bc94f452cbc86c55039781a4e9 100644
--- a/documents/lib.rs
+++ b/documents/lib.rs
@@ -118,7 +118,7 @@ impl Hash {
 
 /// Wrapper of a block hash.
 #[derive(Copy, Clone, PartialEq, Eq, Hash)]
-pub struct BlockHash(Hash);
+pub struct BlockHash(pub Hash);
 
 impl Display for BlockHash {
     fn fmt(&self, f: &mut Formatter) -> Result<(), Error> {