diff --git a/README.md b/README.md
index 133cef4cd..a0098e194 100644
--- a/README.md
+++ b/README.md
@@ -14,6 +14,7 @@
 * Modern beautiful Ember.js frontend
 * Separate stats for workers: can highlight timed-out workers so miners can perform maintenance of rigs
 * JSON-API for stats
+* PPLNS block reward
 
 #### Proxies
 
diff --git a/config.example.json b/config.example.json
index 1a264b8cc..f4a0687e1 100644
--- a/config.example.json
+++ b/config.example.json
@@ -2,6 +2,7 @@
 	"threads": 2,
 	"coin": "eth",
 	"name": "main",
+	"pplns": 9000,
 
 	"proxy": {
 		"enabled": true,
diff --git a/main.go b/main.go
index faff57e60..871d8a0e3 100644
--- a/main.go
+++ b/main.go
@@ -33,6 +33,7 @@ func startApi() {
 }
 
 func startBlockUnlocker() {
+	cfg.BlockUnlocker.Pplns = cfg.Pplns
 	u := payouts.NewBlockUnlocker(&cfg.BlockUnlocker, backend)
 	u.Start()
 }
@@ -82,7 +83,7 @@ func main() {
 
 	startNewrelic()
 
-	backend = storage.NewRedisClient(&cfg.Redis, cfg.Coin)
+	backend = storage.NewRedisClient(&cfg.Redis, cfg.Coin, cfg.Pplns)
 	pong, err := backend.Check()
 	if err != nil {
 		log.Printf("Can't establish connection to backend: %v", err)
diff --git a/payouts/unlocker.go b/payouts/unlocker.go
index c073ef0b3..e2a7f5f84 100644
--- a/payouts/unlocker.go
+++ b/payouts/unlocker.go
@@ -26,6 +26,7 @@ type UnlockerConfig struct {
 	Interval       string  `json:"interval"`
 	Daemon         string  `json:"daemon"`
 	Timeout        string  `json:"timeout"`
+	Pplns          int64
 }
 
 const minDepth = 16
@@ -448,12 +449,28 @@ func (u *BlockUnlocker) calculateRewards(block *storage.BlockData) (*big.Rat, *b
 	revenue := new(big.Rat).SetInt(block.Reward)
 	minersProfit, poolProfit := chargeFee(revenue, u.config.PoolFee)
 
-	shares, err := u.backend.GetRoundShares(block.RoundHeight, block.Nonce)
+	var shares map[string]int64
+	var err error
+	if u.config.Pplns > 0 {
+		shares, err = u.backend.GetNShares(block.RoundHeight, block.Nonce)
+	} else {
+		shares, err = u.backend.GetRoundShares(block.RoundHeight, block.Nonce)
+	}
 	if err != nil {
 		return nil, nil, nil, nil, err
 	}
 
-	rewards := calculateRewardsForShares(shares, block.TotalShares, minersProfit)
+	var rewards map[string]int64
+	if u.config.Pplns > 0 {
+		totalShares := int64(0)
+		for _, val := range shares {
+			totalShares += val
+		}
+
+		rewards = calculateRewardsForShares(shares, totalShares, minersProfit)
+	} else {
+		rewards = calculateRewardsForShares(shares, block.TotalShares, minersProfit)
+	}
 
 	if block.ExtraReward != nil {
 		extraReward := new(big.Rat).SetInt(block.ExtraReward)
diff --git a/proxy/config.go b/proxy/config.go
index 6248c538c..457cdd412 100644
--- a/proxy/config.go
+++ b/proxy/config.go
@@ -17,6 +17,7 @@ type Config struct {
 	Threads int `json:"threads"`
 
 	Coin  string         `json:"coin"`
+	Pplns int64          `json:"pplns"`
 	Redis storage.Config `json:"redis"`
 
 	BlockUnlocker payouts.UnlockerConfig `json:"unlocker"`
diff --git a/storage/redis.go b/storage/redis.go
index 449b58fcc..61d0d5252 100644
--- a/storage/redis.go
+++ b/storage/redis.go
@@ -22,6 +22,7 @@ type Config struct {
 type RedisClient struct {
 	client *redis.Client
 	prefix string
+	pplns  int64
 }
 
 type BlockData struct {
@@ -78,14 +79,14 @@ type Worker struct {
 	TotalHR int64 `json:"hr2"`
 }
 
-func NewRedisClient(cfg *Config, prefix string) *RedisClient {
+func NewRedisClient(cfg *Config, prefix string, pplns int64) *RedisClient {
 	client := redis.NewClient(&redis.Options{
 		Addr:     cfg.Endpoint,
 		Password: cfg.Password,
 		DB:       cfg.Database,
 		PoolSize: cfg.PoolSize,
 	})
-	return &RedisClient{client: client, prefix: prefix}
+	return &RedisClient{client: client, prefix: prefix, pplns: pplns}
 }
 
 func (r *RedisClient) Client() *redis.Client {
@@ -212,12 +213,33 @@ func (r *RedisClient) WriteBlock(login, id string, params []string, diff, roundD
 		tx.HIncrBy(r.formatKey("miners", login), "blocksFound", 1)
 		tx.Rename(r.formatKey("shares", "roundCurrent"), r.formatRound(int64(height), params[0]))
 		tx.HGetAllMap(r.formatRound(int64(height), params[0]))
+		tx.LRange(r.formatKey("lastshares"), 0, r.pplns)
 		return nil
 	})
 	if err != nil {
 		return false, err
 	} else {
-		sharesMap, _ := cmds[10].(*redis.StringStringMapCmd).Result()
+		lastshares := cmds[len(cmds)-1].(*redis.StringSliceCmd).Val()
+
+		totalnshares := make(map[string]int64)
+		for _, val := range lastshares {
+			totalnshares[val] += 1
+		}
+
+		ntx := r.client.Multi()
+		defer ntx.Close()
+
+		_, err := ntx.Exec(func() error {
+			for k, v := range totalnshares {
+				ntx.HIncrBy(r.formatNShare(int64(height), params[0]), k, v)
+			}
+			return nil
+		})
+		if err != nil {
+			return false, err
+		}
+
+		sharesMap, _ := cmds[len(cmds)-2].(*redis.StringStringMapCmd).Result()
 		totalShares := int64(0)
 		for _, v := range sharesMap {
 			n, _ := strconv.ParseInt(v, 10, 64)
@@ -231,6 +253,9 @@ func (r *RedisClient) WriteBlock(login, id string, params []string, diff, roundD
 }
 
 func (r *RedisClient) writeShare(tx *redis.Multi, ms, ts int64, login, id string, diff int64, expire time.Duration) {
+	tx.LPush(r.formatKey("lastshares"), login)
+	tx.LTrim(r.formatKey("lastshares"), 0, r.pplns)
+
 	tx.HIncrBy(r.formatKey("shares", "roundCurrent"), login, diff)
 	tx.ZAdd(r.formatKey("hashrate"), redis.Z{Score: float64(ts), Member: join(diff, login, id, ms)})
 	tx.ZAdd(r.formatKey("hashrate", login), redis.Z{Score: float64(ts), Member: join(diff, id, ms)})
@@ -246,6 +271,10 @@ func (r *RedisClient) formatRound(height int64, nonce string) string {
 	return r.formatKey("shares", "round"+strconv.FormatInt(height, 10), nonce)
 }
 
+func (r *RedisClient) formatNShare(height int64, nonce string) string {
+	return r.formatKey("nshares", "round"+strconv.FormatInt(height, 10), nonce)
+}
+
 func join(args ...interface{}) string {
 	s := make([]string, len(args))
 	for i, v := range args {
@@ -271,6 +300,13 @@ func join(args ...interface{}) string {
 			} else {
 				s[i] = "0"
 			}
+		case *big.Rat:
+			x := v.(*big.Rat)
+			if x != nil {
+				s[i] = x.FloatString(9)
+			} else {
+				s[i] = "0"
+			}
 		default:
 			panic("Invalid type specified for conversion")
 		}
@@ -310,6 +346,20 @@ func (r *RedisClient) GetRoundShares(height int64, nonce string) (map[string]int
 	return result, nil
 }
 
+func (r *RedisClient) GetNShares(height int64, nonce string) (map[string]int64, error) {
+	result := make(map[string]int64)
+	cmd := r.client.HGetAllMap(r.formatNShare(height, nonce))
+	if cmd.Err() != nil {
+		return nil, cmd.Err()
+	}
+	sharesMap, _ := cmd.Result()
+	for login, v := range sharesMap {
+		n, _ := strconv.ParseInt(v, 10, 64)
+		result[login] = n
+	}
+	return result, nil
+}
+
 func (r *RedisClient) GetPayees() ([]string, error) {
 	payees := make(map[string]struct{})
 	var result []string
@@ -552,6 +602,7 @@ func (r *RedisClient) writeImmatureBlock(tx *redis.Multi, block *BlockData) {
 	// Redis 2.8.x returns "ERR source and destination objects are the same"
 	if block.Height != block.RoundHeight {
 		tx.Rename(r.formatRound(block.RoundHeight, block.Nonce), r.formatRound(block.Height, block.Nonce))
+		tx.Rename(r.formatNShare(block.RoundHeight, block.Nonce), r.formatNShare(block.Height, block.Nonce))
 	}
 	tx.ZRem(r.formatKey("blocks", "candidates"), block.candidateKey)
 	tx.ZAdd(r.formatKey("blocks", "immature"), redis.Z{Score: float64(block.Height), Member: block.key()})
@@ -559,6 +610,7 @@ func (r *RedisClient) writeImmatureBlock(tx *redis.Multi, block *BlockData) {
 
 func (r *RedisClient) writeMaturedBlock(tx *redis.Multi, block *BlockData) {
 	tx.Del(r.formatRound(block.RoundHeight, block.Nonce))
+	tx.Del(r.formatNShare(block.RoundHeight, block.Nonce))
 	tx.ZRem(r.formatKey("blocks", "immature"), block.immatureKey)
 	tx.ZAdd(r.formatKey("blocks", "matured"), redis.Z{Score: float64(block.Height), Member: block.key()})
 }
@@ -578,6 +630,7 @@ func (r *RedisClient) GetMinerStats(login string, maxPayments int64) (map[string
 		tx.ZRevRangeWithScores(r.formatKey("payments", login), 0, maxPayments-1)
 		tx.ZCard(r.formatKey("payments", login))
 		tx.HGet(r.formatKey("shares", "roundCurrent"), login)
+		tx.LRange(r.formatKey("lastshares"), 0, r.pplns)
 		return nil
 	})
 
@@ -591,6 +644,15 @@ func (r *RedisClient) GetMinerStats(login string, maxPayments int64) (map[string
 		stats["paymentsTotal"] = cmds[2].(*redis.IntCmd).Val()
 		roundShares, _ := cmds[3].(*redis.StringCmd).Int64()
 		stats["roundShares"] = roundShares
+
+		lastnshares := cmds[4].(*redis.StringSliceCmd).Val()
+		nsh := 0
+		for _, val := range lastnshares {
+			if val == login {
+				nsh++
+			}
+		}
+		stats["lastNShares"] = nsh
 	}
 
 	return stats, nil
@@ -668,6 +730,7 @@ func (r *RedisClient) CollectStats(smallWindow time.Duration, maxBlocks, maxPaym
 		tx.ZCard(r.formatKey("blocks", "matured"))
 		tx.ZCard(r.formatKey("payments", "all"))
 		tx.ZRevRangeWithScores(r.formatKey("payments", "all"), 0, maxPayments-1)
+		tx.LLen(r.formatKey("lastshares"))
 		return nil
 	})
 
@@ -676,6 +739,7 @@ func (r *RedisClient) CollectStats(smallWindow time.Duration, maxBlocks, maxPaym
 	}
 
 	result, _ := cmds[2].(*redis.StringStringMapCmd).Result()
+	result["lastNShares"] = strconv.FormatInt(cmds[11].(*redis.IntCmd).Val(), 10)
 	stats["stats"] = convertStringMap(result)
 	candidates := convertCandidateResults(cmds[3].(*redis.ZSliceCmd))
 	stats["candidates"] = candidates
diff --git a/storage/redis_test.go b/storage/redis_test.go
index 29c60d9f7..666722e84 100644
--- a/storage/redis_test.go
+++ b/storage/redis_test.go
@@ -14,7 +14,7 @@ var r *RedisClient
 const prefix = "test"
 
 func TestMain(m *testing.M) {
-	r = NewRedisClient(&Config{Endpoint: "127.0.0.1:6379"}, prefix)
+	r = NewRedisClient(&Config{Endpoint: "127.0.0.1:6379"}, prefix, 3000)
 	reset()
 	c := m.Run()
 	reset()
diff --git a/www/app/controllers/account.js b/www/app/controllers/account.js
index 79782f798..fa822524c 100644
--- a/www/app/controllers/account.js
+++ b/www/app/controllers/account.js
@@ -6,7 +6,7 @@ export default Ember.Controller.extend({
 
   roundPercent: Ember.computed('stats', 'model', {
     get() {
-      var percent = this.get('model.roundShares') / this.get('stats.roundShares');
+      var percent = this.get('model.lastNShares') / this.get('stats.lastNShares');
       if (!percent) {
         return 0;
       }