diff --git a/README.md b/README.md
index d040697b..8cdb2871 100644
--- a/README.md
+++ b/README.md
@@ -74,3 +74,4 @@ cargo run -- account-balance --interval 2.0 -c polygon -a 0x75be52afd54a13b6c984
 
 http://deposit.dev.golem.network:15555/erc20/api/attestation/sepolia/0xeb9b088871155d0ae32f382de5a42d0a64e946f512b722698f4ae6b32164f92d
 http://deposit.dev.golem.network:15555/erc20/api/attestation/sepolia/0xc8b0ceee393cdcf313945d20b3bd45a01b0ccf2484309b669da2d4da9266b4d5
+http://deposit.dev.golem.network:15555/erc20/api/attestation/base/0xc0f18976a498f7287562492cca4a145108e83e3606e020f10653afd3511656ef
diff --git a/crates/erc20_payment_lib/src/server/web.rs b/crates/erc20_payment_lib/src/server/web.rs
index b441a89b..79be6c1b 100644
--- a/crates/erc20_payment_lib/src/server/web.rs
+++ b/crates/erc20_payment_lib/src/server/web.rs
@@ -1383,7 +1383,22 @@ pub async fn check_attestation(
         decoded_items.push(AttestationItemInfo {
             name: token_name.to_string(),
             typ: token_type.to_string(),
-            value: token.to_string(),
+            value: match token {
+                ethabi::Token::Address(addr) => format!("{:#x}", addr),
+                ethabi::Token::FixedBytes(bytes) => hex::encode(bytes),
+                ethabi::Token::Int(int) => format!("{:#x}", int),
+                ethabi::Token::Uint(uint) => format!("{:#x}", uint),
+                ethabi::Token::Bool(b) => {
+                    if *b {
+                        "true".to_string()
+                    } else {
+                        "false".to_string()
+                    }
+                }
+                ethabi::Token::String(s) => s.to_string(),
+                ethabi::Token::Bytes(bytes) => hex::encode(bytes),
+                _ => token.to_string(),
+            },
         });
     }