diff --git a/cmd/bootstrapper/bootstrapper.go b/cmd/bootstrapper/bootstrapper.go
index 299d72d8ce..af6bf53e17 100644
--- a/cmd/bootstrapper/bootstrapper.go
+++ b/cmd/bootstrapper/bootstrapper.go
@@ -23,7 +23,6 @@ import (
 	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/spacemeshos/go-spacemesh/common/types"
-	"github.com/spacemeshos/go-spacemesh/log"
 )
 
 const (
@@ -89,16 +88,26 @@ var cmd = &cobra.Command{
 			targetEpochs = append(targetEpochs, types.EpochID(epoch))
 		}
 
-		log.JSONLog(true)
-		lvl, err := zap.ParseAtomicLevel(strings.ToLower(logLevel))
+		lvl, err := zap.ParseAtomicLevel(logLevel)
 		if err != nil {
 			return err
 		}
-		logger := log.NewWithLevel("", lvl)
+
+		logger, err := zap.Config{
+			Level:            lvl,
+			Encoding:         "json",
+			EncoderConfig:    zap.NewProductionEncoderConfig(),
+			OutputPaths:      []string{"stderr"},
+			ErrorOutputPaths: []string{"stderr"},
+		}.Build()
+		if err != nil {
+			return fmt.Errorf("creating logger: %w", err)
+		}
+
 		g := NewGenerator(
 			bitcoinEndpoint,
 			spacemeshEndpoint,
-			WithLogger(logger.WithName("generator")),
+			WithLogger(logger.Named("generator")),
 		)
 
 		ctx, cancel := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
@@ -106,7 +115,7 @@ var cmd = &cobra.Command{
 		if serveUpdate {
 			srv := NewServer(g, genFallback, port,
 				WithSrvFilesystem(afero.NewOsFs()),
-				WithSrvLogger(logger.WithName("server")),
+				WithSrvLogger(logger.Named("server")),
 				WithBootstrapEpochs(targetEpochs),
 			)
 			return runServer(ctx, srv)
diff --git a/cmd/bootstrapper/generator.go b/cmd/bootstrapper/generator.go
index c6643885b4..0c8ac6456f 100644
--- a/cmd/bootstrapper/generator.go
+++ b/cmd/bootstrapper/generator.go
@@ -16,12 +16,12 @@ import (
 
 	pb "github.com/spacemeshos/api/release/go/spacemesh/v1"
 	"github.com/spf13/afero"
+	"go.uber.org/zap"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/spacemeshos/go-spacemesh/bootstrap"
 	"github.com/spacemeshos/go-spacemesh/common/types"
-	"github.com/spacemeshos/go-spacemesh/log"
 )
 
 const (
@@ -35,7 +35,7 @@ func PersistedFilename(epoch types.EpochID, suffix string) string {
 }
 
 type Generator struct {
-	logger      log.Log
+	logger      *zap.Logger
 	fs          afero.Fs
 	client      *http.Client
 	btcEndpoint string
@@ -44,7 +44,7 @@ type Generator struct {
 
 type Opt func(*Generator)
 
-func WithLogger(logger log.Log) Opt {
+func WithLogger(logger *zap.Logger) Opt {
 	return func(g *Generator) {
 		g.logger = logger
 	}
@@ -64,7 +64,7 @@ func WithHttpClient(c *http.Client) Opt {
 
 func NewGenerator(btcEndpoint, smEndpoint string, opts ...Opt) *Generator {
 	g := &Generator{
-		logger:      log.NewNop(),
+		logger:      zap.NewNop(),
 		fs:          afero.NewOsFs(),
 		client:      &http.Client{},
 		btcEndpoint: btcEndpoint,
@@ -125,7 +125,7 @@ type BitcoinResponse struct {
 	Hash   string `json:"hash"`
 }
 
-func (g *Generator) genBeacon(ctx context.Context, logger log.Log) (types.Beacon, error) {
+func (g *Generator) genBeacon(ctx context.Context, logger *zap.Logger) (types.Beacon, error) {
 	ctx, cancel := context.WithTimeout(ctx, timeout)
 	defer cancel()
 	br, err := bitcoinHash(ctx, logger, g.client, g.btcEndpoint)
@@ -142,15 +142,17 @@ func (g *Generator) genBeacon(ctx context.Context, logger log.Log) (types.Beacon
 	return beacon, nil
 }
 
-func bitcoinHash(ctx context.Context, logger log.Log, client *http.Client, targetUrl string) (*BitcoinResponse, error) {
+func bitcoinHash(
+	ctx context.Context,
+	logger *zap.Logger,
+	client *http.Client,
+	targetUrl string,
+) (*BitcoinResponse, error) {
 	latest, err := queryBitcoin(ctx, client, targetUrl)
 	if err != nil {
 		return nil, err
 	}
-	logger.With().Info("latest bitcoin block height",
-		log.Uint64("height", latest.Height),
-		log.String("hash", latest.Hash),
-	)
+	logger.Info("latest bitcoin block height", zap.Uint64("height", latest.Height), zap.String("hash", latest.Hash))
 	height := latest.Height - confirmation
 
 	blockUrl := fmt.Sprintf("%s/blocks/%d", targetUrl, height)
@@ -158,10 +160,7 @@ func bitcoinHash(ctx context.Context, logger log.Log, client *http.Client, targe
 	if err != nil {
 		return nil, err
 	}
-	logger.With().Info("confirmed bitcoin block",
-		log.Uint64("height", confirmed.Height),
-		log.String("hash", confirmed.Hash),
-	)
+	logger.Info("confirmed bitcoin block", zap.Uint64("height", confirmed.Height), zap.String("hash", confirmed.Hash))
 	return confirmed, nil
 }
 
@@ -257,8 +256,8 @@ func (g *Generator) GenUpdate(
 	if err != nil {
 		return "", fmt.Errorf("persist epoch update %v: %w", filename, err)
 	}
-	g.logger.With().Info("generated update",
-		log.String("filename", filename),
+	g.logger.Info("generated update",
+		zap.String("filename", filename),
 	)
 	return filename, nil
 }
diff --git a/cmd/bootstrapper/generator_test.go b/cmd/bootstrapper/generator_test.go
index 346e57209d..4c1aec7bb4 100644
--- a/cmd/bootstrapper/generator_test.go
+++ b/cmd/bootstrapper/generator_test.go
@@ -22,7 +22,6 @@ import (
 	"github.com/spacemeshos/go-spacemesh/bootstrap"
 	"github.com/spacemeshos/go-spacemesh/common/types"
 	"github.com/spacemeshos/go-spacemesh/datastore"
-	"github.com/spacemeshos/go-spacemesh/log/logtest"
 	"github.com/spacemeshos/go-spacemesh/sql"
 	"github.com/spacemeshos/go-spacemesh/sql/atxs"
 )
@@ -143,7 +142,7 @@ func TestGenerator_Generate(t *testing.T) {
 			g := NewGenerator(
 				ts.URL,
 				cfg.PublicListener,
-				WithLogger(logtest.New(t)),
+				WithLogger(zaptest.NewLogger(t)),
 				WithFilesystem(fs),
 				WithHttpClient(ts.Client()),
 			)
@@ -170,9 +169,9 @@ func TestGenerator_CheckAPI(t *testing.T) {
 	t.Parallel()
 	targetEpoch := types.EpochID(3)
 	db := sql.InMemory()
-	lg := logtest.New(t)
+	lg := zaptest.NewLogger(t)
 	createAtxs(t, db, targetEpoch-1, types.RandomActiveSet(activeSetSize))
-	cfg, cleanup := launchServer(t, datastore.NewCachedDB(db, lg.Zap()))
+	cfg, cleanup := launchServer(t, datastore.NewCachedDB(db, lg))
 	t.Cleanup(cleanup)
 
 	fs := afero.NewMemMapFs()
diff --git a/cmd/bootstrapper/server.go b/cmd/bootstrapper/server.go
index eb6fa5204f..a2c737451e 100644
--- a/cmd/bootstrapper/server.go
+++ b/cmd/bootstrapper/server.go
@@ -13,11 +13,11 @@ import (
 	"time"
 
 	"github.com/spf13/afero"
+	"go.uber.org/zap"
 	"golang.org/x/sync/errgroup"
 
 	"github.com/spacemeshos/go-spacemesh/bootstrap"
 	"github.com/spacemeshos/go-spacemesh/common/types"
-	"github.com/spacemeshos/go-spacemesh/log"
 )
 
 const fileRegex = "/epoch-(?P<Epoch>[0-9]+)-update-(?P<Suffix>[a-z]+)"
@@ -45,7 +45,7 @@ func (np *NetworkParam) updateActiveSetTime(targetEpoch types.EpochID) time.Time
 type Server struct {
 	*http.Server
 	eg              errgroup.Group
-	logger          log.Log
+	logger          *zap.Logger
 	fs              afero.Fs
 	gen             *Generator
 	genFallback     bool
@@ -55,7 +55,7 @@ type Server struct {
 
 type SrvOpt func(*Server)
 
-func WithSrvLogger(logger log.Log) SrvOpt {
+func WithSrvLogger(logger *zap.Logger) SrvOpt {
 	return func(s *Server) {
 		s.logger = logger
 	}
@@ -76,7 +76,7 @@ func WithBootstrapEpochs(epochs []types.EpochID) SrvOpt {
 func NewServer(gen *Generator, fallback bool, port int, opts ...SrvOpt) *Server {
 	s := &Server{
 		Server:          &http.Server{Addr: fmt.Sprintf(":%d", port)},
-		logger:          log.NewNop(),
+		logger:          zap.NewNop(),
 		fs:              afero.NewOsFs(),
 		gen:             gen,
 		genFallback:     fallback,
@@ -102,7 +102,7 @@ func (s *Server) Start(ctx context.Context, errCh chan error, params *NetworkPar
 		http.HandleFunc("/", s.handle)
 		http.HandleFunc("/checkpoint", s.handleCheckpoint)
 		http.HandleFunc("/updateCheckpoint", s.handleUpdate)
-		s.logger.With().Info("server starts serving", log.String("addr", ln.Addr().String()))
+		s.logger.Info("server starts serving", zap.Stringer("addr", ln.Addr()))
 		if err = s.Serve(ln); err != nil {
 			errCh <- err
 			return err
@@ -170,7 +170,7 @@ func (s *Server) genWithRetry(ctx context.Context, epoch types.EpochID, maxRetri
 	if err == nil {
 		return nil
 	}
-	s.logger.With().Debug("generate fallback active set retry", log.Err(err))
+	s.logger.Debug("generate fallback active set retry", zap.Error(err))
 
 	retries := 0
 	backoff := 10 * time.Second
@@ -180,7 +180,7 @@ func (s *Server) genWithRetry(ctx context.Context, epoch types.EpochID, maxRetri
 		select {
 		case <-timer.C:
 			if err := s.GenFallbackActiveSet(ctx, epoch); err != nil {
-				s.logger.With().Debug("generate fallback active set retry", log.Err(err))
+				s.logger.Debug("generate fallback active set retry", zap.Error(err))
 				retries++
 				if retries >= maxRetries {
 					return err
@@ -245,7 +245,7 @@ func getPartialActiveSet(ctx context.Context, smEndpoint string, targetEpoch typ
 }
 
 func (s *Server) Stop(ctx context.Context) {
-	s.logger.With().Info("shutting down server")
+	s.logger.Info("shutting down server")
 	s.Shutdown(ctx)
 	s.eg.Wait()
 }
@@ -253,13 +253,13 @@ func (s *Server) Stop(ctx context.Context) {
 func (s *Server) handle(w http.ResponseWriter, r *http.Request) {
 	matches := s.regex.FindStringSubmatch(r.URL.String())
 	if len(matches) != 3 {
-		s.logger.With().Error("unrecognized url", log.String("url", r.URL.String()))
+		s.logger.Error("unrecognized url", zap.Stringer("url", r.URL))
 		w.WriteHeader(http.StatusNotFound)
 		return
 	}
 	e, err := strconv.Atoi(matches[1])
 	if err != nil {
-		s.logger.With().Error("unrecognized url", log.String("url", r.URL.String()), log.Err(err))
+		s.logger.Error("unrecognized url", zap.Stringer("url", r.URL), zap.Error(err))
 		w.WriteHeader(http.StatusNotFound)
 		return
 	}
@@ -310,8 +310,5 @@ func (s *Server) handleUpdate(w http.ResponseWriter, r *http.Request) {
 		fmt.Fprintf(w, "save checkpoint err: %v", err)
 		return
 	}
-	s.logger.With().Info("saved checkpoint data",
-		log.String("data", data),
-		log.String("filename", filename),
-	)
+	s.logger.Info("saved checkpoint data", zap.String("data", data), zap.String("filename", filename))
 }
diff --git a/cmd/bootstrapper/server_test.go b/cmd/bootstrapper/server_test.go
index 910d448c79..1bdb61c6bb 100644
--- a/cmd/bootstrapper/server_test.go
+++ b/cmd/bootstrapper/server_test.go
@@ -19,7 +19,6 @@ import (
 	"github.com/spacemeshos/go-spacemesh/bootstrap"
 	"github.com/spacemeshos/go-spacemesh/common/types"
 	"github.com/spacemeshos/go-spacemesh/datastore"
-	"github.com/spacemeshos/go-spacemesh/log/logtest"
 	"github.com/spacemeshos/go-spacemesh/sql"
 )
 
@@ -65,14 +64,14 @@ func TestServer(t *testing.T) {
 	g := NewGenerator(
 		"",
 		cfg.PublicListener,
-		WithLogger(logtest.New(t)),
+		WithLogger(zaptest.NewLogger(t)),
 		WithFilesystem(fs),
 	)
 
 	epochs := []types.EpochID{types.EpochID(4), types.EpochID(5)}
 	srv := NewServer(g, false, port,
 		WithSrvFilesystem(fs),
-		WithSrvLogger(logtest.New(t)),
+		WithSrvLogger(zaptest.NewLogger(t)),
 		WithBootstrapEpochs(epochs),
 	)
 	np := &NetworkParam{