diff --git a/docs/openapi.yaml b/docs/openapi.yaml
index 8cf0c4b..2047909 100644
--- a/docs/openapi.yaml
+++ b/docs/openapi.yaml
@@ -524,7 +524,7 @@ paths:
               schema:
                 $ref: '#/components/schemas/Signature'
         403:
-          description: Post does not belong to user, is not public or not saved to IPFS, or user's wallet address is not known
+          description: Post does not belong to user, is not public or not saved to IPFS, or user's wallet address is not known or not verified
         404:
           description: Post not found
         418:
diff --git a/src/mastodon_api/statuses/views.rs b/src/mastodon_api/statuses/views.rs
index 4718619..c61ee89 100644
--- a/src/mastodon_api/statuses/views.rs
+++ b/src/mastodon_api/statuses/views.rs
@@ -451,7 +451,8 @@ async fn get_signature(
     let current_user = get_current_user(db_client, auth.token()).await?;
     let blockchain_config = config.blockchain.as_ref()
         .ok_or(HttpError::NotSupported)?;
-    let wallet_address = current_user.wallet_address
+    // Wallet address must be public because minting exposes it
+    let wallet_address = current_user.public_wallet_address()
         .ok_or(HttpError::PermissionError)?;
     let post = get_post_by_id(db_client, &status_id).await?;
     if post.author.id != current_user.id || !post.is_public() || post.repost_of_id.is_some() {