global: snapshot

crates/brk_parser/src/block.rs

@@ -0,0 +1,19 @@
+use bitcoin::Block;
+
+pub trait BlockExtended {
+    fn coinbase_tag(&self) -> String;
+}
+
+impl BlockExtended for Block {
+    fn coinbase_tag(&self) -> String {
+        let Some(input) = self.txdata.first().and_then(|tx| tx.input.first()) else {
+            return String::new();
+        };
+        let bytes = input.script_sig.as_bytes();
+        String::from_utf8_lossy(bytes)
+            .chars()
+            .filter(|&c| c != '\u{FFFD}' && (c >= ' ' || c == '\n' || c == '\r' || c == '\t'))
+            .take(1_024)
+            .collect()
+    }
+}