add safety checks to prevent wallet disasters

manager.go

@@ -176,6 +176,7 @@ func (s *SyncManager) Start() error {
 					"NotEnoughFunds",
 					"no space left on device",
 					"failure uploading wallet",
+					"the channel in the wallet is different than the channel in the database",
 				}
 				if util.SubstringInSlice(err.Error(), fatalErrors) {
 					return errors.Prefix("@Nikooo777 this requires manual intervention! Exiting...", err)

setup.go

@@ -193,6 +193,11 @@ func (s *Sync) ensureChannelOwnership() error {
 			//TODO: eventually get rid of this when the whole db is filled
 			if s.lbryChannelID == "" {
 				err = s.Manager.apiConfig.SetChannelClaimID(s.YoutubeChannelID, channel.ClaimID)
+			} else if channel.ClaimID != s.lbryChannelID {
+				return errors.Err("the channel in the wallet is different than the channel in the database")
+			}
+			if channel.Name != s.LbryChannelName {
+				return errors.Err("the channel in the wallet is different than the channel in the database")
 			}
 			s.lbryChannelID = channel.ClaimID
 			isChannelMine = true

ytsync.go

@@ -383,6 +383,10 @@ func (s *Sync) fixDupes(claims []jsonrpc.Claim) (bool, error) {
 			return false, errors.Err("something is wrong with this claim: %s", c.ClaimID)
 		}
 		tn := *c.Value.Stream.Metadata.Thumbnail
+		if !strings.Contains(tn, "https://berk.ninja/thumbnails/") {
+			//we're dealing with something that wasn't published by us!
+			continue
+		}
 		videoID := tn[strings.LastIndex(tn, "/")+1:]
 
 		log.Infof("claimid: %s, claimName: %s, videoID: %s", c.ClaimID, c.Name, videoID)