diff --git a/api/src/StamperWrapper.js b/api/src/StamperWrapper.js
index 13ee090db91121e0a17ac45bffbd82788dadddf2..7eebbb3ef4d60f9620e6dd31600dd0cbf5925622 100644
--- a/api/src/StamperWrapper.js
+++ b/api/src/StamperWrapper.js
@@ -38,7 +38,8 @@ class Stamper {
                 to: this.contractAddress,
                 // v: 47525974938 * 35 + 2,
                 // v: 47525974938,
-                chainId: '200941592',
+                // Parece que sin chainId funciona igual - hasta a veces mejor.
+                //chainId: '200941592',
                 gas: gasLimit,
                 // gasLimit: gasLimit,
                 data: encodedABI