diff --git a/cmd/fireantelope/main.go b/cmd/fireantelope/main.go
index e1e9805..02d64f9 100644
--- a/cmd/fireantelope/main.go
+++ b/cmd/fireantelope/main.go
@@ -65,6 +65,8 @@ func Chain() *firecore.Chain[*pbantelope.Block] {
 				return nil
 			},
 
+			SanitizeBlockForCompare: sanitizeBlockForCompare,
+
 			//TransformFlags: map[string]*firecore.TransformFlag{
 			//	"receipt-account-filters": {
 			//		Description: "Comma-separated accounts to use as filter/index. If it contains a colon (:), it will be interpreted as <prefix>:<suffix> (each of which can be empty, ex: 'hello:' or ':world')",
diff --git a/cmd/fireantelope/util.go b/cmd/fireantelope/util.go
index e65fca8..b742c51 100644
--- a/cmd/fireantelope/util.go
+++ b/cmd/fireantelope/util.go
@@ -2,7 +2,10 @@ package main
 
 import (
 	"fmt"
+	pbantelope "github.com/pinax-network/firehose-antelope/types/pb/sf/antelope/type/v1"
+	"google.golang.org/protobuf/types/known/timestamppb"
 	"strconv"
+	"time"
 )
 
 func mustParseUint64(in string) uint64 {
@@ -13,3 +16,74 @@ func mustParseUint64(in string) uint64 {
 
 	return out
 }
+
+func sanitizeBlockForCompare(block *pbantelope.Block) *pbantelope.Block {
+
+	fixedTimestamp := timestamppb.New(time.Now())
+
+	var sanitizeContext func(logContext *pbantelope.Exception_LogContext)
+	sanitizeContext = func(logContext *pbantelope.Exception_LogContext) {
+		if logContext != nil {
+			logContext.Line = 0
+			logContext.ThreadName = "thread"
+			logContext.Timestamp = fixedTimestamp
+			sanitizeContext(logContext.Context)
+		}
+	}
+
+	sanitizeException := func(exception *pbantelope.Exception) {
+		if exception != nil {
+			for _, stack := range exception.Stack {
+				sanitizeContext(stack.Context)
+			}
+		}
+	}
+
+	sanitizeRLimitOp := func(rlimitOp *pbantelope.RlimitOp) {
+		switch v := rlimitOp.Kind.(type) {
+		case *pbantelope.RlimitOp_AccountUsage:
+			v.AccountUsage.CpuUsage.LastOrdinal = 111
+			v.AccountUsage.NetUsage.LastOrdinal = 222
+		case *pbantelope.RlimitOp_State:
+			v.State.AverageBlockCpuUsage.LastOrdinal = 333
+			v.State.AverageBlockNetUsage.LastOrdinal = 444
+		}
+	}
+
+	for _, rlimitOp := range block.RlimitOps {
+		sanitizeRLimitOp(rlimitOp)
+	}
+
+	for _, trxTrace := range block.UnfilteredTransactionTraces {
+		trxTrace.Elapsed = 888
+		sanitizeException(trxTrace.Exception)
+
+		for _, permOp := range trxTrace.PermOps {
+			if permOp.OldPerm != nil {
+				permOp.OldPerm.LastUpdated = fixedTimestamp
+			}
+
+			if permOp.NewPerm != nil {
+				permOp.NewPerm.LastUpdated = fixedTimestamp
+			}
+		}
+
+		for _, rlimitOp := range trxTrace.RlimitOps {
+			sanitizeRLimitOp(rlimitOp)
+		}
+
+		for _, actTrace := range trxTrace.ActionTraces {
+			actTrace.Elapsed = 999
+			sanitizeException(actTrace.Exception)
+		}
+
+		if trxTrace.FailedDtrxTrace != nil {
+			sanitizeException(trxTrace.FailedDtrxTrace.Exception)
+			for _, actTrace := range trxTrace.FailedDtrxTrace.ActionTraces {
+				sanitizeException(actTrace.Exception)
+			}
+		}
+	}
+
+	return block
+}