diff --git a/docs/generated/sql/functions.md b/docs/generated/sql/functions.md
index 4277a9bd7045..35fbc2ced206 100644
--- a/docs/generated/sql/functions.md
+++ b/docs/generated/sql/functions.md
@@ -3106,6 +3106,8 @@ may increase either contention or retry errors, or both.</p>
 </span></td><td>Volatile</td></tr>
 <tr><td><a name="crdb_internal.encode_key"></a><code>crdb_internal.encode_key(table_id: <a href="int.html">int</a>, index_id: <a href="int.html">int</a>, row_tuple: anyelement) &rarr; <a href="bytes.html">bytes</a></code></td><td><span class="funcdesc"><p>Generate the key for a row on a particular table and index.</p>
 </span></td><td>Stable</td></tr>
+<tr><td><a name="crdb_internal.fingerprint"></a><code>crdb_internal.fingerprint(span: <a href="bytes.html">bytes</a>[], start_time: <a href="decimal.html">decimal</a>, all_revisions: <a href="bool.html">bool</a>) &rarr; <a href="int.html">int</a></code></td><td><span class="funcdesc"><p>This function is used only by CockroachDB’s developers for testing purposes.</p>
+</span></td><td>Stable</td></tr>
 <tr><td><a name="crdb_internal.fingerprint"></a><code>crdb_internal.fingerprint(span: <a href="bytes.html">bytes</a>[], start_time: <a href="timestamp.html">timestamptz</a>, all_revisions: <a href="bool.html">bool</a>) &rarr; <a href="int.html">int</a></code></td><td><span class="funcdesc"><p>This function is used only by CockroachDB’s developers for testing purposes.</p>
 </span></td><td>Stable</td></tr>
 <tr><td><a name="crdb_internal.fingerprint"></a><code>crdb_internal.fingerprint(span: <a href="bytes.html">bytes</a>[], stripped: <a href="bool.html">bool</a>) &rarr; <a href="int.html">int</a></code></td><td><span class="funcdesc"><p>This function is used only by CockroachDB’s developers for testing purposes.</p>
diff --git a/pkg/ccl/streamingccl/replicationtestutils/testutils.go b/pkg/ccl/streamingccl/replicationtestutils/testutils.go
index 9df6af3b71ba..70acdb3c5107 100644
--- a/pkg/ccl/streamingccl/replicationtestutils/testutils.go
+++ b/pkg/ccl/streamingccl/replicationtestutils/testutils.go
@@ -149,7 +149,8 @@ func (c *TenantStreamingClusters) RequireDestinationFingerprintAtTimestamp(
 func FingerprintTenantAtTimestampNoHistory(
 	t sqlutils.Fataler, db *sqlutils.SQLRunner, tenantID uint64, timestamp string,
 ) string {
-	fingerprintQuery := fmt.Sprintf("SELECT * FROM crdb_internal.fingerprint(crdb_internal.tenant_span($1::INT), 0::TIMESTAMPTZ, false) AS OF SYSTEM TIME %s", timestamp)
+	fingerprintQuery := fmt.Sprintf("SELECT * FROM crdb_internal.fingerprint(crdb_internal."+
+		"tenant_span($1::INT), 0::DECIMAL, false) AS OF SYSTEM TIME %s", timestamp)
 	return db.QueryStr(t, fingerprintQuery, tenantID)[0][0]
 }
 
diff --git a/pkg/cmd/roachtest/tests/cluster_to_cluster.go b/pkg/cmd/roachtest/tests/cluster_to_cluster.go
index bcc4d5ff5164..fae0d042fd56 100644
--- a/pkg/cmd/roachtest/tests/cluster_to_cluster.go
+++ b/pkg/cmd/roachtest/tests/cluster_to_cluster.go
@@ -583,17 +583,12 @@ func (rd *replicationDriver) compareTenantFingerprintsAtTimestamp(
 	rd.t.Status(fmt.Sprintf("comparing tenant fingerprints between start time %s and end time %s",
 		startTime.UTC(), endTime.UTC()))
 
-	// TODO(adityamaru,lidorcarmel): Once we agree on the format and precision we
-	// display all user facing timestamps with, we should revisit how we format
-	// the start time to ensure we are fingerprinting from the most accurate lower
-	// bound.
-	microSecondRFC3339Format := "2006-01-02 15:04:05.999999"
-	startTimeStr := startTime.Format(microSecondRFC3339Format)
+	startTimeDecimal := hlc.Timestamp{WallTime: startTime.UnixNano()}.AsOfSystemTime()
 	aost := hlc.Timestamp{WallTime: endTime.UnixNano()}.AsOfSystemTime()
 	fingerprintQuery := fmt.Sprintf(`
 SELECT *
-FROM crdb_internal.fingerprint(crdb_internal.tenant_span($1::INT), '%s'::TIMESTAMPTZ, true)
-AS OF SYSTEM TIME '%s'`, startTimeStr, aost)
+FROM crdb_internal.fingerprint(crdb_internal.tenant_span($1::INT), '%s'::DECIMAL, true)
+AS OF SYSTEM TIME '%s'`, startTimeDecimal, aost)
 
 	var srcFingerprint int64
 	fingerPrintMonitor := rd.newMonitor(ctx)
diff --git a/pkg/sql/sem/builtins/builtins.go b/pkg/sql/sem/builtins/builtins.go
index 24aa614b263e..d9dbe61598ed 100644
--- a/pkg/sql/sem/builtins/builtins.go
+++ b/pkg/sql/sem/builtins/builtins.go
@@ -7627,6 +7627,22 @@ expires until the statement bundle is collected`,
 			Info:       "This function is used only by CockroachDB's developers for testing purposes.",
 			Volatility: volatility.Stable,
 		},
+		tree.Overload{
+			Types: tree.ParamTypes{
+				{Name: "span", Typ: types.BytesArray},
+				{Name: "start_time", Typ: types.Decimal},
+				{Name: "all_revisions", Typ: types.Bool},
+				// NB: The function can be called with an AOST clause that will be used
+				// as the `end_time` when issuing the ExportRequests for the purposes of
+				// fingerprinting.
+			},
+			ReturnType: tree.FixedReturnType(types.Int),
+			Fn: func(ctx context.Context, evalCtx *eval.Context, args tree.Datums) (tree.Datum, error) {
+				return verboseFingerprint(ctx, evalCtx, args)
+			},
+			Info:       "This function is used only by CockroachDB's developers for testing purposes.",
+			Volatility: volatility.Stable,
+		},
 		tree.Overload{
 			Types: tree.ParamTypes{
 				{Name: "span", Typ: types.BytesArray},
@@ -7638,17 +7654,7 @@ expires until the statement bundle is collected`,
 			},
 			ReturnType: tree.FixedReturnType(types.Int),
 			Fn: func(ctx context.Context, evalCtx *eval.Context, args tree.Datums) (tree.Datum, error) {
-				if len(args) != 3 {
-					return nil, errors.New("argument list must have three elements")
-				}
-				span, err := parseSpan(args[0])
-				if err != nil {
-					return nil, err
-				}
-				startTime := tree.MustBeDTimestampTZ(args[1]).Time
-				startTimestamp := hlc.Timestamp{WallTime: startTime.UnixNano()}
-				allRevisions := bool(tree.MustBeDBool(args[2]))
-				return fingerprint(ctx, evalCtx, span, startTimestamp, allRevisions /* stripped */, false)
+				return verboseFingerprint(ctx, evalCtx, args)
 			},
 			Info:       "This function is used only by CockroachDB's developers for testing purposes.",
 			Volatility: volatility.Stable,
diff --git a/pkg/sql/sem/builtins/fingerprint_builtin_test.go b/pkg/sql/sem/builtins/fingerprint_builtin_test.go
index 8928d103d35f..6f70e1fb3f01 100644
--- a/pkg/sql/sem/builtins/fingerprint_builtin_test.go
+++ b/pkg/sql/sem/builtins/fingerprint_builtin_test.go
@@ -21,7 +21,6 @@ import (
 	"github.com/cockroachdb/cockroach/pkg/kv/kvserver"
 	"github.com/cockroachdb/cockroach/pkg/roachpb"
 	"github.com/cockroachdb/cockroach/pkg/server"
-	"github.com/cockroachdb/cockroach/pkg/sql/sem/eval"
 	"github.com/cockroachdb/cockroach/pkg/storage"
 	"github.com/cockroachdb/cockroach/pkg/testutils/serverutils"
 	"github.com/cockroachdb/cockroach/pkg/testutils/sqlutils"
@@ -89,10 +88,11 @@ func TestFingerprint(t *testing.T) {
 	}
 
 	fingerprint := func(t *testing.T, startKey, endKey string, startTime, endTime hlc.Timestamp, allRevisions bool) int64 {
-		decimal := eval.TimestampToDecimal(endTime)
+		aost := endTime.AsOfSystemTime()
 		var fingerprint int64
-		query := fmt.Sprintf(`SELECT * FROM crdb_internal.fingerprint(ARRAY[$1::BYTES, $2::BYTES], $3, $4) AS OF SYSTEM TIME %s`, decimal.String())
-		require.NoError(t, sqlDB.QueryRow(query, roachpb.Key(startKey), roachpb.Key(endKey), startTime.GoTime(), allRevisions).Scan(&fingerprint))
+		query := fmt.Sprintf(`SELECT * FROM crdb_internal.fingerprint(ARRAY[$1::BYTES, $2::BYTES],$3::DECIMAL, $4) AS OF SYSTEM TIME '%s'`, aost)
+		require.NoError(t, sqlDB.QueryRow(query, roachpb.Key(startKey), roachpb.Key(endKey),
+			startTime.AsOfSystemTime(), allRevisions).Scan(&fingerprint))
 		return fingerprint
 	}
 
diff --git a/pkg/sql/sem/builtins/fingerprint_builtins.go b/pkg/sql/sem/builtins/fingerprint_builtins.go
index e50561be7058..c1611869541f 100644
--- a/pkg/sql/sem/builtins/fingerprint_builtins.go
+++ b/pkg/sql/sem/builtins/fingerprint_builtins.go
@@ -31,6 +31,33 @@ import (
 	"github.com/cockroachdb/errors"
 )
 
+func verboseFingerprint(
+	ctx context.Context, evalCtx *eval.Context, args tree.Datums,
+) (tree.Datum, error) {
+	if len(args) != 3 {
+		return nil, errors.New("argument list must have three elements")
+	}
+	span, err := parseSpan(args[0])
+	if err != nil {
+		return nil, err
+	}
+
+	// The startTime can either be a timestampTZ or a decimal.
+	var startTimestamp hlc.Timestamp
+	if parsedDecimal, ok := tree.AsDDecimal(args[1]); ok {
+		startTimestamp, err = hlc.DecimalToHLC(&parsedDecimal.Decimal)
+		if err != nil {
+			return nil, err
+		}
+	} else {
+		startTime := tree.MustBeDTimestampTZ(args[1]).Time
+		startTimestamp = hlc.Timestamp{WallTime: startTime.UnixNano()}
+	}
+
+	allRevisions := bool(tree.MustBeDBool(args[2]))
+	return fingerprint(ctx, evalCtx, span, startTimestamp, allRevisions /* stripped */, false)
+}
+
 func fingerprint(
 	ctx context.Context,
 	evalCtx *eval.Context,
diff --git a/pkg/sql/sem/builtins/fixed_oids.go b/pkg/sql/sem/builtins/fixed_oids.go
index f619f7cd50d5..9fa7fd84f7c1 100644
--- a/pkg/sql/sem/builtins/fixed_oids.go
+++ b/pkg/sql/sem/builtins/fixed_oids.go
@@ -2383,6 +2383,7 @@ var builtinOidsArray = []string{
 	2410: `crdb_internal.pretty_value(raw_value: bytes) -> string`,
 	2411: `to_char(date: date, format: string) -> string`,
 	2412: `crdb_internal.unsafe_lock_replica(range_id: int, lock: bool) -> bool`,
+	2413: `crdb_internal.fingerprint(span: bytes[], start_time: decimal, all_revisions: bool) -> int`,
 }
 
 var builtinOidsBySignature map[string]oid.Oid