Squashed commit for segwit support:

commit c59abe5d203fabdabcca81ff5f9c6ff133cfae3b
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Tue Nov 28 11:13:52 2017 +0100

    segwit: show a segwit icon on blocks history

    + remove some inline styles...

commit b4a8639370e6837ebc5a2047e7c334e9f931abfc
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Tue Nov 28 09:55:40 2017 +0100

    segwit: cleanup + masternode case

    tested ok with BSD (block 400996), and with real BTX segwit txs (block 90958)

    also ok on VTC and GRS

commit 926dbd11757ebff7f7d4930266de9b9061c8ab16
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Sat Nov 25 18:41:01 2017 +0100

    sql: add segwit fields, and ui config

    and fill block segwit field if it contains segwit txs,
    an icon is added in the dashboard "last blocks" for these blocks

commit 0b13bf55e9dd1d2229d188f0f8382b27642b20da
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Sat Nov 25 13:47:20 2017 +0100

    segwit: include commitment in coinbase + .conf toggle

    tested ok on BTX, GRS and VTC with normal txs, but the commitment merkle hash maybe need some more love...

    so, to prevent useless bigger blocks, only generate segwit commitment if a segwit tx is present in mempool

    to check with real segwit txs... not seen any yet..

commit b508bc87943d9e426cda994c2f53c16c11e8d4c3
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Thu Mar 2 11:18:34 2017 +0100

    segwit: prepare the witness data, but disabled

    need more test, may affect the coinbase merkle and the miners...

commit 19bd3a83b9ddddd8b5ed4b7a1bdf8cf8c233e346
Author: Tanguy Pruvot <tanguy.pruvot@gmail.com>
Date:   Thu Mar 2 10:30:29 2017 +0100

    stratum: handle and auto toggle segwit if supported

sql/2017-11-segwit.sql

@@ -0,0 +1,7 @@
+-- Recent additions to add after db init (.gz)
+-- mysql yaamp -p < file.sql
+
+ALTER TABLE `blocks` ADD `segwit` tinyint(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `txhash`;
+
+ALTER TABLE `coins` ADD `usesegwit` tinyint(1) UNSIGNED NOT NULL DEFAULT '0' AFTER `usememorypool`;
+

stratum/client_submit.cpp

@@ -205,7 +205,7 @@ static void client_do_submit(YAAMP_CLIENT *client, YAAMP_JOB *job, YAAMP_JOB_VAL
 				debuglog("*** ACCEPTED %s %d (+1)\n", coind_aux->name, coind_aux->height);
 
 				block_add(client->userid, client->workerid, coind_aux->id, coind_aux->height, target_to_diff(coin_target_aux),
-					target_to_diff(hash_int), coind_aux->aux.hash, "");
+					target_to_diff(hash_int), coind_aux->aux.hash, "", 0);
 			}
 
 			else
@@ -270,7 +270,7 @@ static void client_do_submit(YAAMP_CLIENT *client, YAAMP_JOB *job, YAAMP_JOB_VAL
 
 			block_add(client->userid, client->workerid, coind->id, templ->height,
 				target_to_diff(coin_target), target_to_diff(hash_int),
-				hash1, submitvalues->hash_be);
+				hash1, submitvalues->hash_be, templ->has_segwit_txs);
 
 			if(coind->noblocknotify) {
 				// DCR go wallet doesnt handle blocknotify= config (yet)

stratum/coinbase.cpp

@@ -66,6 +66,7 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 {
 	char eheight[32], etime[32];
 	char entime[32] = { 0 };
+	char commitment[128] = { 0 };
 
 	ser_number(templ->height, eheight);
 	ser_number(time(NULL), etime);
@@ -90,6 +91,10 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 
 	sprintf(templ->coinb2, "%s00000000", script2);
 
+	// segwit commitment, if needed
+	if (templ->has_segwit_txs)
+		sprintf(commitment, "0000000000000000%02x%s", (int) (strlen(coind->commitment)/2), coind->commitment);
+
 	json_int_t available = templ->value;
 
 	// sample coins using mandatory dev/foundation fees
@@ -158,7 +163,12 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 		available -= charity_amount;
 		coind->charity_amount = charity_amount;
 
-		strcat(templ->coinb2, "02");
+		if (templ->has_segwit_txs) {
+			strcat(templ->coinb2, "03"); // 3 outputs (nulldata + fees + miner)
+			strcat(templ->coinb2, commitment);
+		} else {
+			strcat(templ->coinb2, "02");
+		}
 		job_pack_tx(coind, templ->coinb2, available, NULL);
 		job_pack_tx(coind, templ->coinb2, charity_amount, script_payee);
 		strcat(templ->coinb2, "00000000"); // locktime
@@ -350,6 +360,7 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 		json_int_t charity_amount = json_get_int(json_result, "payee_amount");
 		bool charity_payments = json_get_bool(json_result, "masternode_payments");
 		bool charity_enforce = json_get_bool(json_result, "enforce_masternode_payments");
+
 		if(strcmp(coind->symbol, "CRW") == 0)
 		{
 			char script_dests[2048] = { 0 };
@@ -390,29 +401,41 @@ void coinbase_create(YAAMP_COIND *coind, YAAMP_JOB_TEMPLATE *templ, json_value *
 			//debuglog("%s %d dests %s\n", coind->symbol, npayees, script_dests);
 			return;
 		}
+
 		if(charity_payments && charity_enforce)
 		{
-			available -= charity_amount;
+			char script_payee[256] = { 0 };
-
-			char script_payee[1024];
 			base58_decode(charity_payee, script_payee);
 
-			strcat(templ->coinb2, "02");
+			if (templ->has_segwit_txs) {
+				strcat(templ->coinb2, "03"); // 3 outputs (nulldata + node + miner)
+				strcat(templ->coinb2, commitment);
+			} else {
+				strcat(templ->coinb2, "02"); // 2 outputs
+			}
+
 			job_pack_tx(coind, templ->coinb2, charity_amount, script_payee);
-		}
+			available -= charity_amount;
-		else
+
+		} else {
 			strcat(templ->coinb2, "01");
+		}
 	}
 
-	else
+	else if (templ->has_segwit_txs) {
+		strcat(templ->coinb2, "02");
+		strcat(templ->coinb2, commitment);
+	} else {
 		strcat(templ->coinb2, "01");
+	}
 
 	job_pack_tx(coind, templ->coinb2, available, NULL);
-	strcat(templ->coinb2, "00000000"); // locktime
 
 	//if(coind->txmessage)
 	//	strcat(templ->coinb2, "00");
 
+	strcat(templ->coinb2, "00000000"); // locktime
+
 	coind->reward = (double)available/100000000*coind->reward_mul;
 //	debuglog("coinbase %f\n", coind->reward);
 

stratum/coind.h

@@ -68,6 +68,10 @@ public:
 	bool noblocknotify;
 	bool multialgos; // pow_hash field (or mined_hash)
 
+	bool usesegwit;
+	char commitment[128];
+	char witness_magic[16];
+
 	YAAMP_JOB *job;
 //	YAAMP_JOB_TEMPLATE *templ;
 };

stratum/coind_template.cpp

@@ -233,8 +233,9 @@ YAAMP_JOB_TEMPLATE *coind_create_template(YAAMP_COIND *coind)
 	if(coind->usememorypool)
 		return coind_create_template_memorypool(coind);
 
-	char params[4*1024] = "[{}]";
+	char params[512] = "[{}]";
 	if(!strcmp(coind->symbol, "PPC")) strcpy(params, "[]");
+	else if(g_stratum_segwit) strcpy(params, "[{\"rules\":[\"segwit\"]}]");
 
 	json_value *json = rpc_call(&coind->rpc, "getblocktemplate", params);
 	if(!json || json_is_null(json))
@@ -255,6 +256,26 @@ YAAMP_JOB_TEMPLATE *coind_create_template(YAAMP_COIND *coind)
 		return NULL;
 	}
 
+	// segwit rule
+	json_value *json_rules = json_get_array(json_result, "rules");
+	if(json_rules && !strlen(coind->witness_magic) && json_rules->u.array.length) {
+		for (int i=0; i<json_rules->u.array.length; i++) {
+			json_value *val = json_rules->u.array.values[i];
+			if(!strcmp(val->u.string.ptr, "segwit")) {
+				const char *commitment = json_get_string(json_result, "default_witness_commitment");
+				strcpy(coind->witness_magic, "aa21a9ed");
+				if (commitment && strlen(commitment) > 12) {
+					strncpy(coind->witness_magic, &commitment[4], 8);
+					coind->witness_magic[8] = '\0';
+				}
+				coind->usesegwit |= g_stratum_segwit;
+				if (coind->usesegwit)
+					debuglog("%s segwit enabled, magic %s\n", coind->symbol, coind->witness_magic);
+				break;
+			}
+		}
+	}
+
 	json_value *json_tx = json_get_array(json_result, "transactions");
 	if(!json_tx)
 	{
@@ -355,26 +376,78 @@ YAAMP_JOB_TEMPLATE *coind_create_template(YAAMP_COIND *coind)
 	//////////////////////////////////////////////////////////////////////////////////////////
 
 	vector<string> txhashes;
+	vector<string> txids;
 	txhashes.push_back("");
+	txids.push_back("");
 
+	templ->has_segwit_txs = false;
+	// to force/test
+	// templ->has_segwit_txs = coind->usesegwit = (coind->usesegwit || g_stratum_segwit);
 	for(int i = 0; i < json_tx->u.array.length; i++)
 	{
 		const char *p = json_get_string(json_tx->u.array.values[i], "hash");
-
+		char hash_be[256] = { 0 };
-		char hash_be[1024];
-		memset(hash_be, 0, 1024);
 		string_be(p, hash_be);
-
 		txhashes.push_back(hash_be);
 
+		const char *txid = json_get_string(json_tx->u.array.values[i], "txid");
+		if(txid && strlen(txid)) {
+			char txid_be[256] = { 0 };
+			string_be(txid, txid_be);
+			txids.push_back(txid_be);
+			if (strcmp(hash_be, txid_be)) {
+				//debuglog("%s segwit tx found, height %d\n", coind->symbol, templ->height);
+				templ->has_segwit_txs = true; // if not, its useless to generate a segwit block, bigger
+			}
+		} else {
+			templ->has_segwit_txs = false; // force disable if not supported (no txid fields)
+		}
+
 		const char *d = json_get_string(json_tx->u.array.values[i], "data");
 		templ->txdata.push_back(d);
 	}
 
-	templ->txmerkles[0] = 0;
+	templ->txmerkles[0] = '\0';
-	templ->txcount = txhashes.size();
+	if(templ->has_segwit_txs) {
-	templ->txsteps = merkle_steps(txhashes);
+		templ->txcount = txids.size();
+		templ->txsteps = merkle_steps(txids);
+	} else {
+		templ->txcount = txhashes.size();
+		templ->txsteps = merkle_steps(txhashes);
+	}
+
+	if(templ->has_segwit_txs) {
+		// * We compute the witness hash (which is the hash including witnesses) of all the block's transactions, except the
+		//   coinbase (where 0x0000....0000 is used instead).
+		// * The coinbase scriptWitness is a stack of a single 32-byte vector, containing a witness nonce (unconstrained).
+		// * We build a merkle tree with all those witness hashes as leaves (similar to the hashMerkleRoot in the block header).
+		// * There must be at least one output whose scriptPubKey is a single 36-byte push, the first 4 bytes (magic) of which are
+		//   {0xaa, 0x21, 0xa9, 0xed}, and the following 32 bytes are SHA256^2(witness root, witness nonce). In case there are
+		/*
+		char bin[YAAMP_HASHLEN_BIN*2];
+		char witness[128] = { 0 };
+		vector<string> mt_verify = merkle_steps(txhashes);
+		string witness_mt = merkle_with_first(mt_verify, "0000000000000000000000000000000000000000000000000000000000000000");
+		mt_verify.clear();
+		witness_mt = witness_mt + "0000000000000000000000000000000000000000000000000000000000000000";
+
+		binlify((unsigned char *)bin, witness_mt.c_str());
+		sha256_double_hash_hex(bin, witness, YAAMP_HASHLEN_BIN*2);
+
+		int clen = (int) (strlen(coind->witness_magic) + strlen(witness)); // 4 + 32 = 36 = 0x24
+		sprintf(coind->commitment, "6a%02x%s%s", clen/2, coind->witness_magic, witness);
+		*/
+		// default commitment is already computed correctly
+		const char *commitment = json_get_string(json_result, "default_witness_commitment");
+		if (commitment) {
+			sprintf(coind->commitment, "%s", commitment);
+		} else {
+			templ->has_segwit_txs = false;
+		}
+	}
+
 	txhashes.clear();
+	txids.clear();
 
 	vector<string>::const_iterator i;
 	for(i = templ->txsteps.begin(); i != templ->txsteps.end(); ++i)

stratum/db.cpp

@@ -158,7 +158,7 @@ void db_update_coinds(YAAMP_DB *db)
 	db_query(db, "SELECT id, name, rpchost, rpcport, rpcuser, rpcpasswd, rpcencoding, master_wallet, reward, price, "
 		"hassubmitblock, txmessage, enable, auto_ready, algo, pool_ttf, charity_address, charity_amount, charity_percent, "
 		"reward_mul, symbol, auxpow, actual_ttf, network_ttf, usememorypool, hasmasternodes, algo, symbol2, "
-		"rpccurl, rpcssl, rpccert, account, multialgos, max_miners, max_shares "
+		"rpccurl, rpcssl, rpccert, account, multialgos, max_miners, max_shares, usesegwit "
 		"FROM coins WHERE enable AND auto_ready AND algo='%s' ORDER BY index_avg", g_stratum_algo);
 
 	MYSQL_RES *result = mysql_store_result(&db->mysql);
@@ -258,6 +258,9 @@ void db_update_coinds(YAAMP_DB *db)
 		if(row[32]) coind->multialgos = atoi(row[32]);
 		if(row[33] && atoi(row[33]) > 0) g_stratum_max_cons = atoi(row[33]);
 		if(row[34] && atol(row[34]) > 0) g_max_shares = atol(row[34]);
+		if(row[35]) coind->usesegwit = atoi(row[35]) > 0;
+
+		if(coind->usesegwit) g_stratum_segwit = true;
 
 		// force the right rpcencoding for DCR
 		if(!strcmp(coind->symbol, "DCR") && strcmp(coind->rpcencoding, "DCR"))

stratum/job.h

@@ -50,6 +50,8 @@ struct YAAMP_JOB_TEMPLATE
 
 	char header[256];
 
+	bool has_segwit_txs;
+
 	int auxs_size;
 	YAAMP_COIND_AUX *auxs[MAX_AUXS];
 };

stratum/share.cpp

@@ -180,7 +180,7 @@ void share_prune(YAAMP_DB *db)
 void block_prune(YAAMP_DB *db)
 {
 	int count = 0;
-	char buffer[128*1024] = "insert into blocks (height, blockhash, coin_id, userid, workerid, category, difficulty, difficulty_user, time, algo) values ";
+	char buffer[128*1024] = "insert into blocks (height, blockhash, coin_id, userid, workerid, category, difficulty, difficulty_user, time, algo, segwit) values ";
 
 	g_list_block.Enter();
 	for(CLI li = g_list_block.first; li; li = li->next)
@@ -199,9 +199,9 @@ void block_prune(YAAMP_DB *db)
 		}
 
 		if(count) strcat(buffer, ",");
-		sprintf(buffer+strlen(buffer), "(%d, '%s', %d, %d, %d, 'new', %f, %f, %d, '%s')",
+		sprintf(buffer+strlen(buffer), "(%d, '%s', %d, %d, %d, 'new', %f, %f, %d, '%s', %d)",
 			block->height, block->hash, block->coinid, block->userid, block->workerid,
-			block->difficulty, block->difficulty_user, (int)block->created, g_stratum_algo);
+			block->difficulty, block->difficulty_user, (int)block->created, g_stratum_algo, block->segwit?1:0);
 
 		object_delete(block);
 		count++;
@@ -211,7 +211,7 @@ void block_prune(YAAMP_DB *db)
 	if(count) db_query(db, buffer);
 }
 
-void block_add(int userid, int workerid, int coinid, int height, double difficulty, double difficulty_user, const char *hash1, const char *hash2)
+void block_add(int userid, int workerid, int coinid, int height, double diff, double diff_user, const char *h1, const char *h2, int segwit)
 {
 	YAAMP_BLOCK *block = new YAAMP_BLOCK;
 	memset(block, 0, sizeof(YAAMP_BLOCK));
@@ -221,11 +221,12 @@ void block_add(int userid, int workerid, int coinid, int height, double difficul
 	block->workerid = workerid;
 	block->coinid = coinid;
 	block->height = height;
-	block->difficulty = difficulty;
+	block->difficulty = diff;
-	block->difficulty_user = difficulty_user;
+	block->difficulty_user = diff_user;
+	block->segwit = segwit;
 
-	strcpy(block->hash1, hash1);
+	strcpy(block->hash1, h1);
-	strcpy(block->hash2, hash2);
+	strcpy(block->hash2, h2);
 
 	g_list_block.AddTail(block);
 }

stratum/share.h

@@ -9,7 +9,7 @@ public:
 
 	bool valid;
 	bool extranonce1;
-	int error_number;
+	int32_t error_number;
 
 	uint32_t ntime;
 	double difficulty;
@@ -56,8 +56,9 @@ void share_prune(YAAMP_DB *db);
 class YAAMP_BLOCK: public YAAMP_OBJECT
 {
 public:
-	int created;
+	time_t created;
 	bool confirmed;
+	bool segwit;
 
 	int userid;
 	int workerid;
@@ -83,7 +84,7 @@ inline void block_delete(YAAMP_OBJECT *object)
 class YAAMP_SUBMIT: public YAAMP_OBJECT
 {
 public:
-	int created;
+	time_t created;
 	bool valid;
 
 	int remoteid;
@@ -98,7 +99,7 @@ inline void submit_delete(YAAMP_OBJECT *object)
 
 void block_prune(YAAMP_DB *db);
 
-void block_add(int userid, int workerid, int coinid, int height, double difficulty, double difficulty_user, const char *hash1, const char *hash2);
+void block_add(int userid, int workerid, int coinid, int height, double diff, double diff_user, const char *hash1, const char *h2, int segwit);
 void block_confirm(int coinid, const char *hash);
 
 YAAMP_SUBMIT *submit_add(int remoteid, double difficulty);

stratum/stratum.cpp

@@ -31,6 +31,7 @@ int g_stratum_max_ttf;
 int g_stratum_max_cons = 5000;
 bool g_stratum_reconnect;
 bool g_stratum_renting;
+bool g_stratum_segwit;
 bool g_autoexchange = true;
 
 uint64_t g_max_shares = 0;
@@ -221,6 +222,7 @@ int main(int argc, char **argv)
 	g_stratum_max_ttf = iniparser_getint(ini, "STRATUM:max_ttf", 0x70000000);
 	g_stratum_reconnect = iniparser_getint(ini, "STRATUM:reconnect", true);
 	g_stratum_renting = iniparser_getint(ini, "STRATUM:renting", true);
+	g_stratum_segwit = iniparser_getint(ini, "STRATUM:segwit", 0);
 
 	iniparser_freedict(ini);
 

stratum/stratum.h

@@ -82,6 +82,7 @@ extern int g_stratum_max_cons;
 extern int g_stratum_max_ttf;
 extern bool g_stratum_reconnect;
 extern bool g_stratum_renting;
+extern bool g_stratum_segwit;
 
 extern uint64_t g_max_shares;
 extern uint64_t g_shares_counter;

web/yaamp/models/db_coinsModel.php

@@ -49,6 +49,7 @@ class db_coins extends CActiveRecord
 			'serveruser'	=> 'Server user',
 			'hassubmitblock'=> 'Has submitblock',
 			'hasmasternodes'=> 'Masternodes',
+			'usesegwit'	=> 'Use segwit',
 			'market'	=> 'Preferred market',
 			'rpcencoding'	=> 'RPC Type',
 			'specifications'=> 'Notes'

web/yaamp/modules/site/block_results.php

@@ -3,11 +3,9 @@
 JavascriptFile("/yaamp/ui/js/jquery.metadata.js");
 JavascriptFile("/yaamp/ui/js/jquery.tablesorter.widgets.js");
 
-$id = getiparam('id');
+$id = (int) getiparam('id');
-if($id)
+$db_blocks = getdbolist('db_blocks', "coin_id=:id order by time desc limit 250", array(':id'=>$id));
-	$db_blocks = getdbolist('db_blocks', "coin_id=:id order by time desc limit 250", array(':id'=>$id));
+$coin = getdbo('db_coins', $id);
-else
-	$db_blocks = getdbolist('db_blocks', "1 order by time desc limit 250");
 
 showTableSorter('maintable', "{
 	tableClass: 'dataGrid',
@@ -54,7 +52,6 @@ foreach($db_blocks as $db_block)
 {
 	if(!$db_block->coin_id) continue;
 
-	$coin = getdbo('db_coins', $db_block->coin_id);
 	if(!$coin) continue;
 
 	if($db_block->category == 'stake' && !$this->admin) continue;
@@ -74,12 +71,14 @@ foreach($db_blocks as $db_block)
 
 	echo '<td><img width="16" src="'.$coin->image.'"></td>';
 
+	$flags = $db_block->segwit ? '&nbsp;<img src="/images/ui/segwit.png" height="8px" valign="center" title="segwit"/>' : '';
+
 	echo '<td>';
 	if ($this->admin)
 		echo '<a href="/site/coin?id='.$coin->id.'"><b>'.$coin->name.'</b></a>';
 	else
 		echo '<b>'.$coin->name.'</b>';
-	echo '&nbsp;('.$coin->symbol.')</td>';
+	echo '&nbsp;('.$coin->symbol.')'.$flags.'</td>';
 
 //	$db_block->confirmations = $blockext['confirmations'];
 //	$db_block->save();
@@ -133,11 +132,3 @@ foreach($db_blocks as $db_block)
 
 echo "</tbody></table>";
 
-
-
-
-
-
-
-
-

web/yaamp/modules/site/coin_form.php

@@ -219,6 +219,12 @@ echo CUFHtml::activeCheckBox($coin, 'hasmasternodes');
 echo '<p class="formHint2">Require "payee" and "payee_amount" fields in getblocktemplate (DASH)</p>';
 echo CUFHtml::closeCtrlHolder();
 
+echo CUFHtml::openActiveCtrlHolder($coin, 'usesegwit');
+echo CUFHtml::activeLabelEx($coin, 'usesegwit');
+echo CUFHtml::activeCheckBox($coin, 'usesegwit');
+echo '<p class="formHint2"></p>';
+echo CUFHtml::closeCtrlHolder();
+
 echo "</div>";
 
 //////////////////////////////////////////////////////////////////////////////////////////

web/yaamp/modules/site/common_results.php

@@ -615,7 +615,8 @@ foreach($db_blocks as $db_block)
 	$algo_color = getAlgoColors($coin->algo);
 	echo '<tr style="background-color: '.$algo_color.';">';
 	echo '<td width="18px"><img width="16px" src="'.$coin->image.'"></td>';
-	echo '<td><b><a href="/site/coin?id='.$coin->id.'">'.$coin->name.'</a></b></td>';
+	$flags = $db_block->segwit ? '&nbsp;<img src="/images/ui/segwit.png" height="8px" valign="center" title="segwit">' : '';
+	echo '<td><b><a href="/site/coin?id='.$coin->id.'">'.$coin->name.'</a></b>'.$flags.'</td>';
 
 	echo '<td align="right" style="font-size: .8em">'.$db_block->amount.' '.$coin->symbol.'</td>';
 	echo '<td align="right" style="font-size: .8em" title="found '.$db_block->difficulty_user.'">'.$diff.'</td>';

web/yaamp/modules/site/results/found_results.php

@@ -35,6 +35,9 @@ span.block.new       { color: white; background-color: #ad4ef0; }
 span.block.orphan    { color: white; background-color: #d9534f; }
 span.block.immature  { color: white; background-color: #f0ad4e; }
 span.block.confirmed { color: white; background-color: #5cb85c; }
+b.row a { font-size: 10pt; }
+.ssrow td.row { font-size: .8em; }
+td.right { text-align: right; }
 </style>
 
 <table class="dataGrid2">
@@ -61,17 +64,17 @@ foreach($db_blocks as $db_block)
 
 		$reward = bitcoinvaluetoa($db_block->amount);
 
-		echo "<tr class='ssrow'>";
+		echo '<tr class="ssrow">';
-		echo "<td width=18><img width=16 src='/images/btc.png'></td>";
+		echo '<td width="18px"><img width="16px" src="/images/btc.png"/></td>';
-		echo "<td><b>Rental</b><span style='font-size: .8em'> ($db_block->algo)</span></td>";
+		echo '<td class="row"><b>Rental</b> ('.$db_block->algo.')</td>';
-		echo "<td align=right style='font-size: .8em'><b>$reward BTC</b></td>";
+		echo '<td class="row right"><b>'.$reward.' BTC</b></td>';
-		echo "<td align=right style='font-size: .8em'></td>";
+		echo '<td class="row right"></td>';
-		echo "<td align=right style='font-size: .8em'></td>";
+		echo '<td class="row right"></td>';
-		echo "<td align=right style='font-size: .8em'>$d ago</td>";
+		echo '<td class="row right">'.$d.' ago</td>';
-		echo "<td align=right style='font-size: .8em'>";
+		echo '<td class="row right">';
-		echo "<span style='padding: 2px; color: white; background-color: #5cb85c'>Confirmed</span>";
+		echo '<span class="block confirmed">Confirmed</span>';
-		echo "</td>";
+		echo '</td>';
-		echo "</tr>";
+		echo '</tr>';
 
 		continue;
 	}
@@ -83,14 +86,16 @@ foreach($db_blocks as $db_block)
 
 	$link = $coin->createExplorerLink($coin->name, array('hash'=>$db_block->blockhash));
 
+	$flags = $db_block->segwit ? '&nbsp;<img src="/images/ui/segwit.png" height="8px" valign="center" title="segwit"/>' : '';
+
 	echo '<tr class="ssrow">';
-	echo '<td width="18"><img width="16" src="'.$coin->image.'"></td>';
+	echo '<td width="18px"><img width="16px" src="'.$coin->image.'"></td>';
-	echo "<td><b>$link</b><span style='font-size: .8em'> ($coin->algo)</span></td>";
+	echo '<td class="row"><b class="row">'.$link.'</b> ('.$coin->algo.')'.$flags.'</td>';
-	echo "<td align=right style='font-size: .8em'><b>$reward $coin->symbol_show</b></td>";
+	echo '<td class="row right"><b>'.$reward.' '.$coin->symbol_show.'</b></td>';
-	echo "<td align=right style='font-size: .8em' title='found $db_block->difficulty_user'>$difficulty</td>";
+	echo '<td class="row right" title="found '.$db_block->difficulty_user.'">'.$difficulty.'</td>';
-	echo "<td align=right style='font-size: .8em'>$height</td>";
+	echo '<td class="row right">'.$height.'</td>';
-	echo "<td align=right style='font-size: .8em'>$d ago</td>";
+	echo '<td class="row right">'.$d.' ago</td>';
-	echo "<td align=right style='font-size: .8em'>";
+	echo '<td class="row right">';
 
 	if($db_block->category == 'orphan')
 		echo '<span class="block orphan">Orphan</span>';