Use new bulk endpoints to speed up forensics

backend/src/api/bitcoin/bitcoin-api.ts

@@ -60,8 +60,17 @@ class BitcoinApi implements AbstractBitcoinApi {
       });
   }
 
-  $getRawTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getRawTransactions not supported by the Bitcoin RPC API.');
+  async $getRawTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
+    const txs: IEsploraApi.Transaction[] = [];
+    for (const txid of txids) {
+      try {
+        const tx = await this.$getRawTransaction(txid, false, true);
+        txs.push(tx);
+      } catch (err) {
+        // skip failures
+      }
+    }
+    return txs;
   }
 
   $getMempoolTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
@@ -202,6 +211,10 @@ class BitcoinApi implements AbstractBitcoinApi {
     return outspends;
   }
 
+  async $getBatchedOutspendsInternal(txId: string[]): Promise<IEsploraApi.Outspend[][]> {
+    return this.$getBatchedOutspends(txId);
+  }
+
   $getEstimatedHashrate(blockHeight: number): Promise<number> {
     // 120 is the default block span in Core
     return this.bitcoindClient.getNetworkHashPs(120, blockHeight);