diff --git a/block0.yml b/block0.yml
deleted file mode 100644
index 7cdf6b0..0000000
--- a/block0.yml
+++ /dev/null
@@ -1,7 +0,0 @@
---- # block genesis
-ver: 0x00
-seq: 0 # blocknumber (on 32bit max block-number : 4294967296)
-# ipfs object new unixfs-dir
-data: QmUNLLsPACCz1vLxQVkXqqLX5R1X345qqfHbsf67hvA3Nn
-# echo -n '' | ipfs add 
-bkprev: QmbFMke1KXqnYyBBWxB74N4c5SBnJMVAiMNRcGu6x1AwQH
diff --git a/genesis.yml b/genesis.yml
new file mode 100644
index 0000000..24d41ca
--- /dev/null
+++ b/genesis.yml
@@ -0,0 +1,15 @@
+--- # genesis block
+ver: 0
+data:
+ seq: 0
+ payload: QmWM48KvyK9YyPjJt69erxVPN3nbXVMgZWrncRJhAVkGAv
+ comment: "This is the genesis block"
+meta:
+ seed: 0xb3560762
+ salt: 442360558803467359 # used in address computation
+ txroot: ~
+audit:
+ peerid: QmcfHufAK9ErQ9ZKJF7YX68KntYYBJngkGDoVKcZEJyRve
+ tics: 1623830817245864895
+ ip: 83.78.4.228
+prev: ZgjNT5GbSC81KmUPncwhzQAGV3GUeAXafmkMPBw2GMHWM
diff --git a/lib b/lib
index d0e0fdd..9d739e5 160000
--- a/lib
+++ b/lib
@@ -1 +1 @@
-Subproject commit d0e0fdddfdffff4d23405b029266ab02498a009e
+Subproject commit 9d739e5c4bb0b27babea7bdc441cfed6a85bb694
diff --git a/t/encode.t b/t/encode.t
index 0c020fc..7b105c3 100644
--- a/t/encode.t
+++ b/t/encode.t
@@ -2,21 +2,21 @@ BEGIN { if (-e $ENV{SITE}.'/lib') { use lib $ENV{SITE}.'/lib'; } }
 
 use encode qw(encode_basen decode_basen);
 
-my $msg = 'no work yet !';
+my @msg = (
+    'no work yet !',
+    'genesis nonce',
+    'default nonce for block address',
+    'initial nonce'
+);
+for my $msg (@msg) {
+print "msg: $msg\n";
 my $nonce = unpack 'Q',&decode_basen($msg,29);
 printf "nonce: %s\n",$nonce;
 printf "nonce16: %s\n",unpack'H*',pack('Q',$nonce);
 printf "monce29: %s\n",&encode_basen(pack('Q',$nonce),29);
+print ".\n";
+}
 
-my $nonce = unpack 'Q',&decode_basen('genesis nonce',29);
-printf "nonce: %s\n",$nonce;
-printf "nonce16: %s\n",unpack'H*',pack('Q',$nonce);
-printf "monce29: %s\n",&encode_basen(pack('Q',$nonce),29);
-
-my $nonce = unpack 'Q',&decode_basen('initial nonce',29);
-printf "nonce: %s\n",$nonce;
-printf "nonce16: %s\n",unpack'H*',pack('Q',$nonce);
-printf "monce29: %s\n",&encode_basen(pack('Q',$nonce),29);
 
 $msg = &encode_basen("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF",29);
 printf "msg: %s\n",$msg;
diff --git a/testing.pl b/testing.pl
index 59901a1..8ab351c 100644
--- a/testing.pl
+++ b/testing.pl
@@ -13,13 +13,12 @@ BEGIN { print "// ToyChain !\n"; }
 
 use lib 'lib';
 use seed qw(rand64);
-use misc qw(khash $null);
+use misc qw(khash $ZNull);
 use toychain;
 use encode qw(mbase58);
 
 #printf "encode::EXPORT_OK: %s\n",join',',@encode::EXPORT_OK;
 
-printf "ZNull: %s\n",&mbase58($null);
 use YAML::Syck qw(Dump);
 
 my $seed = &seed::setseed('Intentionally good!');
@@ -38,7 +37,7 @@ displayBlock($block);
 print "// testing insertBlock:\n";
 my $chain = &insertBlock($toychain::HEADs[0],$block);
 
-#displayChain($toychain::chain);
+displayChain($toychain::chain);