diff --git a/nyancat/v0.16/upgrade_result.txt b/nyancat/v0.16/upgrade_result.txt
new file mode 100644
index 00000000..1a753a07
--- /dev/null
+++ b/nyancat/v0.16/upgrade_result.txt
@@ -0,0 +1,87 @@
+Parsing... DO NOT QUIT
+count of hash_height_map:  44
+0DE29813CBA06D2AD87B9B9B124DA4D9263025E7: 89500
+E01C7393FF629995EDA5BFE3E27FC19F63D5704E: 89500
+75875F70948E33D1650B9692EF1C51FF3A57DF88: 89500
+236E1A81D99FFFD81E4EA876E4AD2C0D329BAFC7: 89500
+F85D2B404E296373C4B89F16016B450A7178E0B5: 89500
+A4F264828371D3454AD062272E9B61D6AAA3A744: 89500
+13F2644AA5CD7DF42AA1B461ECA4E7F564C97C11: 89500
+A06346354FBF96767FA5149FC2F715E3CD1A7270: 89500
+36B0C2BC6853E51E929256FEAC9B6BEAAC7B3F83: 89500
+D55C44827D2AEC15B32DC419128B771055AD3A78: 89500
+AA8C02646CD999897DF507133BA03E921764EEEF: 89500
+20997FBDB7CF2560C9F2D9C3E9724DB5827DDBE5: 89500
+5238BE5E4451D2CFB13FE7BB6E89190F5A57EC5C: 89500
+1832D22279F8369A96DC1CEB8254B60FBBB6BCB5: 89500
+FD8261857253B1E7CC7907BCC9F1B72339927F29: 89500
+C0CD04963F838318C954DED2F99CF4BA3386F754: 89500
+9B93707175EBDB54218810EAACC0F94F1ECF85BE: 89500
+0DF1CD84F0A01D43D396FA510A3975BDA4B4270E: 89500
+F773B0EE4E139C6C71705C4BE29C4B5378208AF8: 89500
+70D5B7007BD6BB4ADA8AE05AA66D0F75BE8A1ADF: 89500
+CFB81B3886B2245B79B67F5341068A5789BCF2D5: 89500
+61AC82D9E229932490EFA163B59FAC41C0284FFE: 89500
+7C1D0834B14FC68C9ECDA31EEDAD536FF7F6ADC8: 89500
+2DC6BFFB64B0A7F9FDAE00CFA122C3BE12AD5194: 89500
+76C3D14A801DF1EA521B173DEFBE3119848A61FB: 89500
+B2183BA1262F92895027A1D7B65A185AF406CDF1: 89500
+6DA5F750A97DF6548A81DE1F69CAA0F5C81745F0: 89500
+DC95D92E97A88FD22F046AB95EEC5063E6147308: 89500
+AB998215298B2BF037BDC55184B30C415F763433: 89500
+BF84BC1334E698E628B061E729B384DC0192F08E: 89500
+871B774881BFEDA840B63E4B9A77EF4E925FF5C7: 89500
+776BB71E517A771C20718919C47391CE42844F2B: 89500
+C3A5C8764DD7ECE3802B912F679B8AD020FEA6D5: 89500
+A4CC9A56A091737311635ED0C584445BCDE091E4: 89549
+E3E379964AEAD656C8BC2FA24AA8F8D2934B6AD7: 89500
+BCC6D088A63E4CD4BD7FE0B8F4732AA00FC2202C: 89500
+4E5DF0F5F094921BA2ED3C380BCB697F7C82577D: 89500
+29C213D6F7A3B7A2B7BCE98FA4C7991E5958C3EE: 89500
+CAA2D43BFA31C2E9BF9D83B433E6157547A2130E: 89500
+2130777DE84D2CB4915C5E4902222C85DDFFE4C8: 89500
+BDD7EF0A45104720E14954C5F37769F970827F55: 89500
+B27194F8EFED98BBDA74A7A4E2C62728331A3747: 89500
+759FAA15A53AD2F915E5A88D6F649BF03983B34A: 89500
+6739F35B94982379011BAFCD5D7445FAC75899D8: 89500
+1	fva1lr24zv4qhrrzude8f4swhuvtm44ne0lffrlj82	2019-11-18T13:04:22.573Z	nodeasy
+2	fva19yz90xr58ppf5t6hfwwrmn937qnuh7k5y5g272	2019-11-18T13:04:27.616Z	IRIS Cat - FAB46CEEAEAB9FA1
+3	fva1ewdan0e0wssu0sx42vurvh770q4vxgk4vqmpye	2019-11-18T13:04:33.031Z	Rich518
+4	fva1fs9mdufg8cl06n5h7w95wdle89eky6ssnj4cgn	2019-11-18T13:04:38.074Z	liangcheng-nyancat5-DBF3F5B2CA263BF2
+5	fva16lcrv5l70ta78p3hugd3ur7uuxc864sxjqrl8k	2019-11-18T13:04:43.116Z	hmm
+6	fva1ckqsu3mgcnn8u5kzlafrc8tez9xzwg5wlfw7sl	2019-11-18T13:04:43.116Z	xiaopeng
+7	fva12zw00vvh2jfqk7mt3cfsjjpsw0z2xe5tj2t3w0	2019-11-18T13:04:43.116Z	sen2
+8	fva1unvyq8pzjuadt6ceghuw8sr7m8x3923ymmw72z	2019-11-18T13:04:43.116Z	sheny
+9	fva1z9jt836m54snxsv92gpdqugz880uuytkfl6vuv	2019-11-18T13:04:48.165Z	excellent-A5A0087D80A1136E
+10	fva13gxuqpcgc8sq8zhw7ga2jhretmc8zy4r0avz66	2019-11-18T13:04:53.863Z	Coinstaking-65909B956DF0F488
+11	fva1n2gd7lawfyydjfjt5dc223puvy63j9qrd9a8tu	2019-11-18T13:04:53.863Z	CindyLi-A3D4307C0B2D4DB0
+12	fva1fyxwj6pf7sygvtg7tejltwcs8vfv8mwqg0cdp0	2019-11-18T13:04:58.908Z	Wetez
+13	fva1krghynpm5f2wpt6zhkcvljlwrr79cjypyefcuq	2019-11-18T13:05:03.946Z	Darmon-46077CBEEA4FF922
+14	fva1w4n0pkkqxgy5c9gk3nqwx0jlkn05ta0nnver6k	2019-11-18T13:05:09.88Z		dolphintwo-7A38C8CD6C0FA32A
+15	fva1naw4f7slg2fd9dt03m03sfepkhqgrxrcg363da	2019-11-18T13:05:14.923Z	stone
+16	fva1eelwxfzkrmnm7a83d9fv9aqsywdm4je9kur40q	2019-11-18T13:05:19.968Z	szq-1E70794B56DFB583
+17	fva1ud5jlg4unw428mnswt0j2xnahs205ya9frqn2k	2019-11-18T13:05:30.489Z	HLT-DE22EF4D75849301A5283B143B702801F00074AF
+18	fva1vagngllj3sr2s888528uw3rqsnq308km4ylr3t	2019-11-18T13:06:01.034Z	Stake5 Labs - C7595F18CC5D4FA6
+19	fva1f64m50kuemuwfeztpa8mnju309n434ane4vgek	2019-11-18T13:07:13.306Z	shikenian-F1F0BF192D84EAC3
+20	fva1wjyj2xqqgmq9aa69577en9u6x32vclx5820g76	2019-11-18T13:09:01.706Z	Hello_Rose
+21	fva1vjnl5dc385ly08p3rjah3v5peaeq0fqem2whuq	2019-11-18T13:09:42.819Z	matrixyz-D73D632ACC76163D
+22	fva1jytwvxwywuc69jlqp6e85fne4j2d6w9hla3x08	2019-11-18T13:10:09.187Z	wukong5-9A26C5A2EE8EAFD2
+23	fva1qp7hdyk72a7s9xx5078wjyt8ejteme3cr9qe3l	2019-11-18T13:12:33.368Z	filestealer-CF242D961E36802A
+24	fva1z7jfek9vurhw2sdmlwyvu2q37wswa6kaljwstx	2019-11-18T13:12:55.68Z		Allen-49D02A7526022E7C
+25	fva15c7ukycq8d9f5ucmftp42ujl4jx38wtw4aa7fd	2019-11-18T13:24:04.938Z	Irivin_AC1B8777C654F6ADAC9BC53FFCEE899E205B8C35
+26	fva1n5tqycmf8kyagatk9yyadd79e0cw4mldd2spck	2019-11-18T13:51:06.155Z	abouzidi-BE448F9ECAB40ABE
+27	fva1cc6n98a6nqhja23fzv6nhvd6rsdnsgfzvun80v	2019-11-18T13:54:58.043Z	irisnyan5-D378BD6DB583FDF9
+28	fva1est0jnntmeu8g6yv99vaa0khlmm478ajwxuewj	2019-11-18T14:06:41.497Z	NewRoad.Capital-F898ACE263EC1C4E
+29	fva1hma5k4xz2rjsy8sg2zfa6e97cqyptzyw4ddcmr	2019-11-18T14:34:35.879Z	kai-DA4CF56ADE526129
+30	fva1zmrnj3pkms3e86h5u35wyzkz42eptxq5ghgzrz	2019-11-18T14:35:11.703Z	sam-70FA19B71FE14D20
+31	fva1ud47gxvlc3cc9efpga4hvlm44q9970kah4a6ms	2019-11-18T14:35:37.474Z	xiaokai-58B908123A30A660
+32	fva1qkfu7e58pqm30d4ak0gguhnqnx00r6t5e97uug	2019-11-18T14:37:57.481Z	steep-F09FF586F5000416
+33	fva1ygq0eqeaxmgmrqvxm7cvthpgsj7punakv5rnwf	2019-11-18T15:13:56.257Z	yn-alex-FAA52713CBDB55F7
+34	fva1vn8xlcrpzgrhxwnvhed8xlpkvrrmnh4pygu85e	2019-11-18T15:14:47.493Z	BC7FB7F830FD2C32
+35	fva1cn2q6840090kgkpdyl330x5css5kp7m4npyq9j	2019-11-18T15:16:26.945Z	liviu-2C877AC873132C91
+36	fva1lyzpnl2k05wm2l5n7wc09ed7y3e9hfycy0x3kl	2019-11-18T15:41:16.888Z	bharvest-n6
+37	fva18wvfx7j783wq7v6dkr3mjfna2s2ul3d5ktg7u9	2019-11-18T17:25:20.997Z	ilya-genesislab-CE335B8803B8898E
+38	fva1gyhapedd7l0jaxe35hnwxc2tmjcdrvzxv9k50p	2019-11-18T17:42:27.172Z	syncnode-F422F328C14AFBFA
+39	fva10mljgcjf9h2dq6fnms7pxfx8288mtw04g77pd6	2019-11-19T00:34:16.961Z	ATEAM-B700C93D9E4578F666108BE80CB9A4E7643FF992
+40	fva1k4kxxfkhhwvyzxxxgksefkzpxahp9wfcapg2py	2019-11-19T02:22:32.772Z	Mr.K-74D3AF53635231D9
+41	fva19f2vm6gvepakeazkuxsrylgazvq5axpx5x6kn0	2019-11-19T13:17:24.341Z	valiris-5281C9C7BE5C2646		ok
diff --git a/nyancat/v0.16/upgrade_verify.sh b/nyancat/v0.16/upgrade_verify.sh
new file mode 100644
index 00000000..f0174c21
--- /dev/null
+++ b/nyancat/v0.16/upgrade_verify.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+echo "Parsing... DO NOT QUIT"
+
+declare -A hash_height_map
+declare -A fva_hash_map
+declare -A fva_vote_map
+declare -A fva_moniker_map
+declare -A testnet_identity_map
+declare -A mainnet_identity_map
+
+### acquire validator_address of validators who has signed one of blocks between 89500 and 89800 from lcd and save it to hash_height_map, 
+### the height of software upgrade switched to version v0.16.0-rc1 is 89500.
+for i in {89501..89801}
+do
+    # echo $i;
+    PreCommits=$(curl -s 'https://lcd.nyancat.irisnet.org/blocks/'$i | jq '.block.last_commit.precommits')
+    for row in $(echo "${PreCommits}" | jq -r '.[] | @base64'); do
+        _jq() {
+            echo ${row} | base64 --decode | jq -r ${1}
+        }
+        validator_address=$(_jq '.validator_address')
+        height=$(_jq '.height')
+        ### filter validator_address of validator who already has signed last block.
+        if [ "$validator_address" != "null" -a -z "${hash_height_map[$validator_address]}" ]
+        then
+            hash_height_map["$validator_address"]=$height
+        fi
+    done
+done
+echo "count of hash_height_map: " ${#hash_height_map[@]}
+
+### acquire info of validators from api of nyancat explorer and save it to fva_hash_map and testnet_identity_map.
+curl -s 'https://nyancat.irisplorer.io/api/stake/validators?page=1&size=100&type=""&origin=browser' | jq '.Data[] | .proposer_addr+":"+.operator_address+":"+.description.identity' | sed 's/"//g' > nyancat-task-temp
+while read row; do
+    # echo $row
+    hash=$(echo $row | cut -d':' -f1)
+    fva=$(echo $row | cut -d':' -f2)
+    identity=$(echo $row | cut -d':' -f3)
+    fva_hash_map[$fva]=$hash
+    testnet_identity_map[$fva]=$identity
+done < nyancat-task-temp
+
+### acquire info of validators from api of explorer of mainnet and save it to mainnet_identity_map.
+curl -s 'https://www.irisplorer.io/api/stake/validators?page=1&size=100&type=""&origin=browser' | jq '.Data[] | .proposer_addr+":"+.operator_address+":"+.description.identity' | sed 's/"//g' > nyancat-task-temp
+while read row; do
+    identity=$(echo $row | cut -d':' -f3)
+    # echo $identity
+    [ -n "$identity" ] && mainnet_identity_map[$identity]="ok"
+done < nyancat-task-temp
+
+### acquire voted info in proposal #1 & #3 from api of nyancat explorer ordered by time.
+curl -s 'https://nyancat.irisplorer.io/api/gov/proposals/1/voter_txs?page=1&size=100' | jq '.items | reverse | .[] | .voter+":"+.moniker+":"+.option+"::"+.timestamp' | sed 's/"//g' > nyancat-task-temp
+curl -s 'https://nyancat.irisplorer.io/api/gov/proposals/3/voter_txs?page=1&size=100' | jq '.items | reverse | .[] | .voter+":"+.moniker+":"+.option+"::"+.timestamp' | sed 's/"//g' >> nyancat-task-temp
+index=0
+while read row; do
+    # echo $row
+    fva=$(echo $row | cut -d':' -f1)
+    moniker=$(echo $row | cut -d':' -f2)
+    vote=$(echo $row | cut -d':' -f3)
+    timestamp=$(echo $row | awk -F:: '{print $2}')
+    ### filter validators of duplicate vote and unsigned one of 300 blocks after software upgrade.
+    if [ -z "${fva_vote_map[$fva]}" -a -n "${fva_hash_map[$fva]}" ] && [ -n "${hash_height_map[${fva_hash_map[$fva]}]}" ]; then
+        if [ $index -lt 40 ]; then
+            index=$[$index + 1]
+            fva_vote_map[$fva]=$vote
+            echo -e $index"\t"$fva"\t"$timestamp"\t"${testnet_identity_map[$fva]}"\t"$moniker
+        ### validators of mainnet beyond top 40 is passed by verifying their identity.
+        elif [ -n "${testnet_identity_map[$fva]}" ] && [ "${mainnet_identity_map[${testnet_identity_map[$fva]}]}" == "ok" ]; then
+            index=$[$index + 1]
+            fva_vote_map[$fva]=$vote
+            echo -e $index"\t"$fva"\t"$timestamp"\t"${testnet_identity_map[$fva]}"\t"$moniker"\t"ok
+        fi
+    fi
+    # echo $fva,$moniker,$vote
+done < nyancat-task-temp
+rm -f nyancat-task-temp