feat: draft naive inscription detection

Author: Ludo Galabru

components/chainhook-event-observer/src/indexer/bitcoin/mod.rs

@@ -107,11 +107,32 @@ pub fn standardize_bitcoin_block(
 ) -> Result<BitcoinBlockData, String> {
     let mut transactions = vec![];
 
-    let expected_magic_bytes = get_canonical_magic_bytes(&indexer_config.bitcoin_network);
+    let expected_magic_bytes = get_stacks_canonical_magic_bytes(&indexer_config.bitcoin_network);
     let pox_config = get_canonical_pox_config(&indexer_config.bitcoin_network);
 
-    for mut tx in block.txdata.into_iter() {
-        let txid = tx.txid().to_string();
+    ctx.try_log(|logger| slog::info!(logger, "Start processing Bitcoin block {}", block.hash,));
+
+    for mut tx in block.tx.into_iter() {
+        let txid = tx.txid.to_string();
+
+        ctx.try_log(|logger| slog::info!(logger, "Start processing Bitcoin transaction {txid}"));
+
+        let mut stacks_operations = vec![];
+        if let Some(op) = try_parse_stacks_operation(
+            &tx.vout,
+            &pox_config,
+            &expected_magic_bytes,
+            block_height,
+            ctx,
+        ) {
+            stacks_operations.push(op);
+        }
+
+        let mut ordinal_operations = vec![];
+        if let Some(op) = try_parse_ordinal_operation(&tx, block_height, ctx) {
+            ordinal_operations.push(op);
+        }
+
         let mut inputs = vec![];
         for input in tx.vin.drain(..) {
             if input.is_coinbase() {
@@ -141,17 +162,6 @@ pub fn standardize_bitcoin_block(
         }
 
         let mut outputs = vec![];
-        let mut stacks_operations = vec![];
-
-        if let Some(op) = try_parse_stacks_operation(
-            &tx.output,
-            &pox_config,
-            &expected_magic_bytes,
-            block_height,
-            ctx,
-        ) {
-            stacks_operations.push(op);
-        }
         for output in tx.vout.drain(..) {
             outputs.push(TxOut {
                 value: output.value.to_sat(),
@@ -168,6 +178,7 @@ pub fn standardize_bitcoin_block(
                 inputs,
                 outputs,
                 stacks_operations,
+                ordinal_operations,
                 proof: None,
             },
         };
@@ -189,6 +200,39 @@ pub fn standardize_bitcoin_block(
     })
 }
 
+fn try_parse_ordinal_operation(
+    tx: &GetRawTransactionResult,
+    block_height: u64,
+    ctx: &Context,
+) -> Option<OrdinalOperation> {
+    let (pos, magic_bytes) = get_ordinal_canonical_magic_bytes();
+    let limit = pos + magic_bytes.len();
+
+    for input in tx.vin.iter() {
+        if let Some(ref witnesses) = input.txinwitness {
+            for witness in witnesses.iter() {
+                if witness.len() > limit && witness[pos..limit] == magic_bytes {
+                    ctx.try_log(|logger| {
+                        slog::info!(
+                            logger,
+                            "Ordinal operation detected in transaction {}",
+                            tx.txid,
+                        )
+                    });
+                    return Some(OrdinalOperation::InscriptionReveal(
+                        OrdinalInscriptionRevealData {
+                            satoshi_point: "".into(),
+                            content_type: "".into(),
+                            content: vec![],
+                        },
+                    ));
+                }
+            }
+        }
+    }
+    None
+}
+
 fn try_parse_stacks_operation(
     outputs: &Vec<GetRawTransactionResultVout>,
     pox_config: &PoxConfig,

components/chainhook-event-observer/src/indexer/bitcoin/tests.rs

@@ -204,3 +204,22 @@ fn test_bitcoin_vector_040() {
 // fn test_bitcoin_vector_041() {
 //     process_bitcoin_blocks_and_check_expectations(helpers::shapes::get_vector_041());
 // }
+
+#[test]
+fn test_ordinal_inscription_parsing() {
+    use clarity_repl::clarity::util::hash::hex_bytes;
+
+    let witness = hex_bytes("208737bc46923c3e64c7e6768c0346879468bf3aba795a5f5f56efca288f50ed2aac0063036f7264010118746578742f706c61696e3b636861727365743d7574662d38004c9948656c6c6f2030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030303030300a68").unwrap();
+
+    let (pos, magic_bytes) = super::get_ordinal_canonical_magic_bytes();
+    let limit = pos + magic_bytes.len();
+
+    println!("{:?}", &magic_bytes);
+
+    // println!("{:?}", &witness);
+    println!("{:?}", &witness[pos..limit]);
+    if witness.len() > limit && witness[pos..limit] == magic_bytes {
+    } else {
+        panic!();
+    }
+}

components/chainhook-event-observer/src/indexer/tests/helpers/transactions.rs

@@ -104,6 +104,7 @@ pub fn generate_test_tx_bitcoin_p2pkh_transfer(
         metadata: BitcoinTransactionMetadata {
             inputs: vec![],
             outputs,
+            ordinal_operations: vec![],
             stacks_operations: vec![],
             proof: None,
         },