adjust btc and eth publishers and publisher tests

pkg/super_node/shared/intefaces.go

@@ -18,6 +18,8 @@ package shared
 
 import (
 	"math/big"
+
+	node "github.com/ipfs/go-ipld-format"
 )
 
 // PayloadStreamer streams chain-specific payloads to the provided channel
@@ -71,7 +73,7 @@ type ClientSubscription interface {
 
 // DagPutter is a general interface for a dag putter
 type DagPutter interface {
-	DagPut(raw interface{}) ([]string, error)
+	DagPut(n node.Node) (string, error)
 }
 
 // Cleaner is for cleaning out data from the cache within the given ranges