# on receiving block 966421 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-09-11T00:01:57Z
# as written in the block header
2026-09-11T00:01:39Z
$ uptime # since last reboot
00:01:57 up 22 days, 14:17, 0 users, load average: 1.84, 1.53, 1.37
$ battery.sh
102%, Power Supply Online
$ uname -smnr
Linux singer 6.18.44-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1281880 kB
$ du -h -d1 .bitcoin/
12.5G .bitcoin/indexes
5.0G .bitcoin/signet
88.0M .bitcoin/wallets
97.7G .bitcoin/blocks
18.6M .bitcoin/regtest
10.7G .bitcoin/chainstate
126.1G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 435.0G 475.4G 48% /
$ bitcoind -version
Bitcoin Core daemon version v31.99.0-gdb73d162395789ca3a74d50a831f4ac30c0da4f4 bitcoind
Copyright (C) 2009-2026 The Bitcoin Core developers
Please contribute if you find Bitcoin Core useful. Visit
for further information about the software.
The source code is available from .
This is experimental software.
Distributed under the MIT software license, see the accompanying file COPYING
or
$ BC=$(bitcoin-cli getblockcount); echo $BC
966421
$ BH=$(bitcoin-cli getblockhash 966421); echo $BH
000000000000000000011be505b6908d11888bd777d43e96900117852fec59e5
$ bitcoin-cli getblockheader 000000000000000000011be505b6908d11888bd777d43e96900117852fec59e5
{
"hash": "000000000000000000011be505b6908d11888bd777d43e96900117852fec59e5",
"confirmations": 1,
"height": 966421,
"version": 704643072,
"versionHex": "2a000000",
"merkleroot": "51fdd623d0e47ef066a3280a1e813c05d16a2539399d91388917abf4c8720405",
"time": 1789084899,
"mediantime": 1789079629,
"nonce": 3128838862,
"bits": "1702355e",
"target": "00000000000000000002355e0000000000000000000000000000000000000000",
"difficulty": 127450789715843.1,
"chainwork": "00000000000000000000000000000000000000014669e4819c9cafe9d981f334",
"nTx": 6845,
"previousblockhash": "000000000000000000003abeda5933386a675da9bdfeaa5c0e83b060c68240dc"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 1be5 .5b6 9.8d
1188 8bd7 77d4 3e96
9..1 1785 2fec 59e5
$ : Following was the shortform
$ : from which shortkode came
$ last=${BH: -4}
$ a=$(echo $BH | cut -b-60 \
| fold -w 4 \
| grep -Ev '^(0000|[^0]{4})$')
$ R=$(echo $a $last | cut -b-20)
$ printf "%s sf: " $BC
$ { echo $R | grep "$last$" \
|| echo $R M; } | tr "0\n" ". "
echo
966421 sf: ...1 .5b6 9.8d 9..1 M
$ : Following was the shortkode
$ : from which anecdote came
$ nz=$(echo $BH | fold -w 4 \
| grep -cE '^[^0]{4}$')
$ z=$(echo $BH | fold -w 4 \
| grep -c '^0000$')
$ nzzs=$(((${nz}<<4)+${z}))
$ printf "%s sk: " $BC
$ printf "%s %x\n" \
$last \
$nzzs \
| tr 0 .
966421 sk: 59e5 84
$ : Following is an anecdote
$ all=$(echo $BH | fold -w 4 \
| sed 's/^/0x/' \
| paste -s | tr '\t' ^)
$ printf "%s ak: " $BC
$ printf "%04x %02x\n" \
$(($all)) $nzzs \
| tr 0 .
966421 ak: ac4f 84
$ : Following is the jointkode
966421 jk: 59e5 ac4f 84
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 73676,
"bytes": 39935006,
"usage": 220698288,
"total_fee": 0.06086854,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 27,
"permitbaremultisig": true,
"maxdatacarriersize": 100000,
"limitclustercount": 64,
"limitclustersize": 101000,
"optimal": true
}
$ gmm.sh
152
## Current epoch estimation is +1.96%
## 757 of 2016, i.e. 37%, 1259 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
9.281798648074323e+20
$ bitcoin-cli getnetworkhashps 2016 965663
9.102936500339878e+20
$ bitcoin-cli getnetworkhashps 2016 963647
9.004776521724085e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 966421,
"bestblock": "000000000000000000011be505b6908d11888bd777d43e96900117852fec59e5",
"txouts": 165216803,
"bogosize": 12942981313,
"muhash": "3848895061af00c21dfb7d008e556d8a1a3368cc5b8f51f17092cb82702833b7",
"total_amount": 20082338.63163715,
"total_unspendable_amount": 230.11836285,
"block_info": {
"prevout_spent": 253.67359847,
"coinbase": 3.13257932,
"new_outputs_ex_coinbase": 253.66601915,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 966421
{
"avgfee": 110,
"avgfeerate": 0,
"avgtxsize": 215,
"blockhash": "000000000000000000011be505b6908d11888bd777d43e96900117852fec59e5",
"feerate_percentiles": [
0,
0,
0,
1,
1
],
"height": 966421,
"ins": 8630,
"maxfee": 42732,
"maxfeerate": 25,
"maxtxsize": 38504,
"medianfee": 43,
"mediantime": 1789079629,
"mediantxsize": 220,
"minfee": 0,
"minfeerate": 0,
"mintxsize": 67,
"outs": 13793,
"subsidy": 312500000,
"swtotal_size": 1210986,
"swtotal_weight": 2925771,
"swtxs": 4313,
"time": 1789084899,
"total_out": 25366601915,
"total_size": 1477473,
"total_weight": 3991719,
"totalfee": 757932,
"txs": 6845,
"utxo_increase": 5163,
"utxo_size_inc": 363256,
"utxo_increase_actual": -198,
"utxo_size_inc_actual": -13884
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 11599059555,
"totalbytessent": 28412234679,
"timemillis": 1789084918185,
"uploadtarget": {
"timeframe": 86400,
"target": 0,
"target_reached": false,
"serve_historical_blocks": true,
"bytes_left_in_cycle": 0,
"time_left_in_cycle": 0
}
}
$ bitcoin-cli -netinfo
Bitcoin Core client v31.99.0-gdb73d162395789ca3a74d50a831f4ac30c0da4f4 - server 70017/Satoshi:31.99.0/
ipv4 npr total block
in 30 1 31
out 10 0 10 2
total 40 1 41
Local services: witness, compact filters, network limited, p2p v2
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 78580,
"ipv6": 309,
"onion": 1833,
"i2p": 6,
"cjdns": 0,
"total": 80728
}
}
$ halving.sh 966421
=====================================
Bitcoin Block Halving prediction
=====================================
bc=966421
gbt=1231006505
bbt=1789084899
This is average time to mine a block
(1789084899-1231006505)/966421
bts=577.4686358547301282462526
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Wed Mar 22 14:45:50 UTC 2028
-------------------------------------
Next palindrome will be 966669
predicted to happen at this time:
Sat Sep 12 15:48:31 UTC 2026
-------------------------------------
Current mining epoch number is 479.
The next fortnight happens in block
967680 and probably around this time:
Sat Sep 19 09:58:52 UTC 2026
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
17 "transport_protocol_type": "v2",
$ bitcoin-cli getpeerinfo \
| jq -r '.[]
| select ( .transport_protocol_type == "v2" )
| .addr + " " + .session_id' \
| while read addr sid
do
a=$(echo ${addr%\]*} | tr -d '\[' | md5sum | cut -b-16);
printf "%s\n\t%s\n" "$a" "$sid"
done
2fe657504291436b
9c501a1ae0a3cd9eb2cdb4b50afc06741bee4bb36447dd6f9b1169da4688abd4
4429b73fffa10bc5
364061ab2428d09fce1bd54e59e729f8c3ad5a0476383798c0a2e9fc57d70024
830b7a307069d260
e258607a3910f9ca28bcda184f800408c6d96955335b6491167bb6eab455324b
55d45610947dac3f
afb506f14fd6388afafba91f74a9368184b17f7e2f7436bbed315e4e21d2828a
a8155758465dfb26
750aeb296d5f038ce225e25e8fa3fc4d91a0010193bb3a0f3e6bbe3ad9aa9f1f
5b67796efcc30c3a
e6b95ac267eab33d7a0fd7febb91b7a01458c13f7cf638b6b9954defce847057
74fedb6e41df9591
20f6614c2e2737c5f078748201c17b46918355c8220174eec1d223f498d91c26
1aa6113a5e84f800
4d9c1b5a679dda0abd567bd737b9121198b483c4d6c10283854846ac386bb6dc
1ffafc66ecb3c5d4
1c41dbd7aa2543aa848006b12d3211278910821d15ac187e9f0884f3286b38bc
a5c98dec4f8b686c
1f63bd140820684dd00f090c187f708725989bd809c40570a3af0d8f1d20c200
7daaee24c6571433
7b59df9926b06d53843a56e7351977e60ed3318e2f8f20ba11f1f61a272ce52b
a7bbcd64b6e103f2
b43c398f2dc1717f73210bda6aef79890d037517057bfd8a3dd307e06ada4b0e
959e9f48da10fd18
1c95ed7754a9147d604ff710440c609e42333d33a01a95e7f2d8cb4cdb86c729
eb19da94a24c672f
04d663a504f5be1eabf3251193a49ed165fb42f50c0316eecbb95062c5ae5afc
72458f1b4d668216
5bf5a1d54fb93b705fc9c3c533592749598f227ecfed69087232f8afc3ec28cc
65a1f151f40e920a
01c826c049d7f48a69ef2372f8c8cef55330643b371ba7afdd77b79fa39cdde2
91a2081737d36619
33f33ae7d4231490acc4191623d64fefde5ae9bb2d569e02936e563736ae3978
$ niceblack.sh $BH $BC
___ __ __ _ _ ___ __
/ _ \ / / / / | || |__ \/_ |
| (_) |/ /_ / /_ | || |_ ) || |
\__, | '_ \| '_ \ |__ _/ / | |
/ /| (_) | (_) | | |/ /_ | |
/_/ \___/ \___/ |_|____||_|
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 1be5 .5b6 9.8d 1f |
| 2. 1188 8bd7 77d4 3e96 2f |
| 3. 9..1 1785 2fec 59e5 3f |
'=== ==== ==== ==== ==== ==='
jk: 59e5 ac4f 84