diff --git a/src/slp/utils.js b/src/slp/utils.js
index f62575e..3ca596b 100644
--- a/src/slp/utils.js
+++ b/src/slp/utils.js
@@ -1308,108 +1308,8 @@ class Utils {
           if (!isValid) isValid = null
           // let isValid = null
 
-          // There are two possible responses from SLPDB. If SLPDB is functioning
-          // correctly, then validateTxid() will return this:
-          // isValid: [
-          //   {
-          //  "txid": "ff0c0354f8d3ddb34fa36f73494eb58ea24f8b8da6904aa8ed43b7a74886c583",
-          //  "valid": true
-          //   }
-          // ]
-          //
-          // If SLPDB has fallen behind real-time processing, it will return this:
-          // isValid: [
-          //   null
-          // ]
-          //
-          // Note: validateTxid3() has the same output as validateTxid().
-          // validateTxid2() uses slp-validate, which has a different output format.
-
-          // If not in the cache, try the general SLPDB.
-          if (isValid === null) {
-            // console.log(`utxo: ${JSON.stringify(utxo, null, 2)}`)
-            isValid = await this.validateTxid(utxo.txid)
-            // console.log(
-            //   `validateTxid() isValid: ${JSON.stringify(isValid, null, 2)}`
-            // )
-
-            // Handle corner case where SLPDB returns an array with a null element.
-            if (isValid[0] === null) {
-              isValid = [{ txid: utxo.txid, valid: null }]
-            }
-
-            isValid = isValid[0].valid
-
-            // Save the result to the local cache.
-            // cachedTxValidation[utxo.txid] = isValid
-          }
-          // console.log(`isValid: ${JSON.stringify(isValid, null, 2)}`)
-
-          // console.log(
-          //   `pre-validateTxid3() isValid: ${JSON.stringify(isValid, null, 2)}`
-          // )
-
-          // If still null, check the whitelist SLPDB
-          if (isValid === null) {
-            // console.log(
-            //   `checking against whitelist SLPDB. outAry[${i}]: ${JSON.stringify(
-            //     outAry[i],
-            //     null,
-            //     2
-            //   )}`
-            // )
-
-            // Figure out if the token UTXO is in the whitelist.
-            let utxoInWhitelist = false
-            for (let j = 0; j < this.whitelist.length; j++) {
-              if (outAry[i].tokenId === this.whitelist[j].tokenId) {
-                utxoInWhitelist = true
-                break
-              }
-            }
-
-            // If the utxo.tokenId is in the whitelist, check the validity with
-            // the whitelist SLPDB. This should still be functioning properly
-            // if the general SLPDB is not.
-            if (utxoInWhitelist) {
-              isValid = await this.validateTxid3(utxo.txid)
-
-              // console.log(
-              //   `whitelist-SLPDB for ${utxo.txid}: ${JSON.stringify(
-              //     isValid,
-              //     null,
-              //     2
-              //   )}`
-              // )
-
-              if (isValid[0] !== null) isValid = isValid[0].valid
-
-              // Save the result to the local cache.
-              // cachedTxValidation[utxo.txid] = isValid
-            }
-          }
-
-          // console.log(
-          //   `pre-validateTxid2() isValid: ${JSON.stringify(isValid, null, 2)}`
-          // )
-
-          // If still null, as a last resort, check it against slp-validate
-          if (isValid === null) {
-            try {
-              isValid = await this.validateTxid2(utxo.txid)
-            } catch (err) {
-              // Mark as invalid if validateTxid2() throws an error.
-              isValid = null
-            }
-            // console.log(
-            //   `slp-validate isValid: ${JSON.stringify(isValid, null, 2)}`
-            // )
-
-            if (isValid !== null) isValid = isValid.isValid
-
-            // Save the result to the local cache.
-            // cachedTxValidation[utxo.txid] = isValid
-          }
+          // Validate using a 'waterfall' of validators.
+          isValid = await this.waterfallValidateTxid(utxo.txid)
 
           // console.log(`isValid: ${JSON.stringify(isValid, null, 2)}`)
           outAry[i].isValid = isValid