From ab6189664799d6bde8a267387e23e6f4e11d15af Mon Sep 17 00:00:00 2001
From: The MMGen Project <mmgen@tuta.io>
Date: Wed, 29 Jul 2020 14:39:32 +0000
Subject: [PATCH] Version bump; minor changes, fixes

---
 cmds/mmgen-walletchk           |  3 +--
 examples/halving-calculator.py | 20 +++++++++++---------
 mmgen/globalvars.py            |  4 ++--
 mmgen/protocol.py              |  5 ++++-
 4 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/cmds/mmgen-walletchk b/cmds/mmgen-walletchk
index deaf9ae1..d753ac67 100755
--- a/cmds/mmgen-walletchk
+++ b/cmds/mmgen-walletchk
@@ -17,8 +17,7 @@
 # this program.  If not, see <http://www.gnu.org/licenses/>.
 
 """
-mmgen-walletchk: Check integrity of an MMGen deterministic wallet, display
-                 information about it and export it to various formats
+mmgen-walletchk: Check integrity of an MMGen deterministic wallet
 """
 
 from mmgen.main import launch
diff --git a/examples/halving-calculator.py b/examples/halving-calculator.py
index bf757fd6..15865437 100755
--- a/examples/halving-calculator.py
+++ b/examples/halving-calculator.py
@@ -60,15 +60,17 @@ async def main():
 
 	bdr = (cur['time'] - old['time']) / sample_size
 	t_rem = remaining * int(bdr)
-	sub = cur['subsidy'] * Decimal('0.00000001')
+	sub = cur['subsidy'] * proto.coin_amt.min_coin_unit
 
-	print(f'Current block:      {tip}')
-	print(f'Next halving block: {tip + remaining}')
-	print(f'Blocks until halving: {remaining}')
-	print('Current block subsidy: {} {}'.format(str(sub).rstrip('0'),proto.coin))
-	print(f'Current block discovery rate (over last {sample_size} blocks): {bdr/60:0.1f} minutes')
-	print(f'Current clock time (UTC): {date(clock_time)}')
-	print(f'Est. halving date (UTC):  {date(cur["time"] + t_rem)}')
-	print(f'Est. time until halving: {dhms(cur["time"] + t_rem - clock_time)}')
+	print(
+		f'Current block:      {tip}\n'
+		f'Next halving block: {tip + remaining}\n'
+		f'Blocks until halving: {remaining}\n'
+		f'Current block subsidy: {str(sub).rstrip("0")} {proto.coin}\n'
+		f'Current block discovery rate (over last {sample_size} blocks): {bdr/60:0.1f} minutes\n'
+		f'Current clock time (UTC): {date(clock_time)}\n'
+		f'Est. halving date (UTC):  {date(cur["time"] + t_rem)}\n'
+		f'Est. time until halving: {dhms(cur["time"] + t_rem - clock_time)}\n'
+	)
 
 run_session(main())
diff --git a/mmgen/globalvars.py b/mmgen/globalvars.py
index 1490a44e..c3d0c716 100755
--- a/mmgen/globalvars.py
+++ b/mmgen/globalvars.py
@@ -45,8 +45,8 @@ class GlobalContext(Lockable):
 	_use_class_attr = True
 
 	# Constants:
-	version      = '0.12.1'
-	release_date = 'June 2020'
+	version      = '0.12.199'
+	release_date = 'July 2020'
 
 	proj_name = 'MMGen'
 	proj_url  = 'https://github.com/mmgen/mmgen'
diff --git a/mmgen/protocol.py b/mmgen/protocol.py
index dd45b0dc..fe60e710 100755
--- a/mmgen/protocol.py
+++ b/mmgen/protocol.py
@@ -227,6 +227,7 @@ class CoinProtocol(MMGenObject):
 		sign_mode       = 'daemon'
 		avg_bdi         = int(9.7 * 60) # average block discovery interval (historical)
 		halving_interval = 210000
+		max_halvings    = 64
 
 		def hex2wif(self,hexpriv,pubkey_type,compressed): # input is preprocessed hex
 			sec = bytes.fromhex(hexpriv)
@@ -298,6 +299,7 @@ class CoinProtocol(MMGenObject):
 
 	class BitcoinRegtest(BitcoinTestnet):
 		bech32_hrp          = 'bcrt'
+		halving_interval    = 150
 
 	class BitcoinCash(Bitcoin):
 		is_fork_of      = 'Bitcoin'
@@ -353,7 +355,8 @@ class CoinProtocol(MMGenObject):
 		bech32_hrp         = 'tltc'
 
 	class LitecoinRegtest(LitecoinTestnet):
-		bech32_hrp        = 'rltc'
+		bech32_hrp         = 'rltc'
+		halving_interval   = 150
 
 	class DummyWIF: