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-rw-r--r--src/include/taler_crypto_lib.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/taler_crypto_lib.h b/src/include/taler_crypto_lib.h
index 7261d4de5..d354add1a 100644
--- a/src/include/taler_crypto_lib.h
+++ b/src/include/taler_crypto_lib.h
@@ -324,7 +324,9 @@ struct TALER_CoinSpendPublicKeyP
struct GNUNET_CRYPTO_EddsaPublicKey eddsa_pub;
/*
- * If age restriction applies to the coin, it must come with a hash of the age commitment
+ * If age restriction applies to the coin, it must come with a hash of the
+ * age commitment. A zero value indicates that the coin has no age
+ * commitment set.
*/
struct TALER_AgeHash age_commitment_hash;
};