# on receiving block 943939 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-04-06T17:00:31Z
# as written in the block header
2026-04-06T17:00:18Z
$ uptime # since last reboot
17:00:31 up 18 days, 7:53, 0 users, load average: 0.77, 1.00, 1.24
$ battery.sh
100%, Power Supply Online
$ uname -smnr
Linux singer 6.18.2-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2067116 kB
$ du -h -d1 .bitcoin/
12.1G .bitcoin/indexes
4.4G .bitcoin/signet
2.7M .bitcoin/wallets
97.7G .bitcoin/blocks
18.6M .bitcoin/regtest
10.6G .bitcoin/chainstate
125.0G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 433.3G 477.2G 48% /
$ bitcoind -version
Bitcoin Core daemon version v31.0rc2 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
943939
$ BH=$(bitcoin-cli getblockhash 943939); echo $BH
00000000000000000001f67ff4f37dcd8813607d18d850e7ff86525dd2838ab4
$ bitcoin-cli getblockheader 00000000000000000001f67ff4f37dcd8813607d18d850e7ff86525dd2838ab4
{
"hash": "00000000000000000001f67ff4f37dcd8813607d18d850e7ff86525dd2838ab4",
"confirmations": 1,
"height": 943939,
"version": 536961024,
"versionHex": "20016000",
"merkleroot": "8ad1effd02b49d5a28272405047827963a626655c4d392c8178d6142cba8a838",
"time": 1775494818,
"mediantime": 1775490550,
"nonce": 3501355768,
"bits": "17020684",
"target": "0000000000000000000206840000000000000000000000000000000000000000",
"difficulty": 138966872071213.2,
"chainwork": "00000000000000000000000000000000000000011d6e128beec2435faf667260",
"nTx": 3760,
"previousblockhash": "000000000000000000014e76cef12f3fde5ed4df72034c9a1e16c7f968ce6e70"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 f67f f4f3 7dcd
8813 6.7d 18d8 5.e7
ff86 525d d283 8ab4
$ : 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
943939 sf: ...1 6.7d 5.e7 8ab4
$ : 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 .
943939 sk: 8ab4 94
$ : 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 .
943939 ak: 2afd 94
$ : Following is the jointkode
943939 jk: 8ab4 2afd 94
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 18483,
"bytes": 14178286,
"usage": 73751104,
"total_fee": 0.02997846,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000,
"limitclustercount": 64,
"limitclustersize": 101000,
"optimal": true
}
$ gmm.sh
211
## Current epoch estimation is -1.47%
## 451 of 2016, i.e. 22%, 1565 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
9.795718598257836e+20
$ bitcoin-cli getnetworkhashps 2016 943487
9.942372658458654e+20
$ bitcoin-cli getnetworkhashps 2016 941471
9.575843405435805e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 943939,
"bestblock": "00000000000000000001f67ff4f37dcd8813607d18d850e7ff86525dd2838ab4",
"txouts": 165066357,
"bogosize": 12933671040,
"muhash": "e0e8773b5122e01d744da92893b57d56295e948ace719e073e23dc352739dbe5",
"total_amount": 20012082.40520892,
"total_unspendable_amount": 230.09479108,
"block_info": {
"prevout_spent": 11708.18511384,
"coinbase": 3.17012264,
"new_outputs_ex_coinbase": 11708.13999120,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 943939
{
"avgfee": 1200,
"avgfeerate": 4,
"avgtxsize": 400,
"blockhash": "00000000000000000001f67ff4f37dcd8813607d18d850e7ff86525dd2838ab4",
"feerate_percentiles": [
2,
2,
3,
4,
6
],
"height": 943939,
"ins": 6924,
"maxfee": 285440,
"maxfeerate": 905,
"maxtxsize": 25907,
"medianfee": 543,
"mediantime": 1775490550,
"mediantxsize": 223,
"minfee": 19,
"minfeerate": 0,
"mintxsize": 150,
"outs": 10903,
"subsidy": 312500000,
"swtotal_size": 1311214,
"swtotal_weight": 3219079,
"swtxs": 3416,
"time": 1775494818,
"total_out": 1170813999120,
"total_size": 1504403,
"total_weight": 3991835,
"totalfee": 4512264,
"txs": 3760,
"utxo_increase": 3979,
"utxo_size_inc": 292981,
"utxo_increase_actual": 3633,
"utxo_size_inc_actual": 265285
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 3986868368,
"totalbytessent": 8597431057,
"timemillis": 1775494831730,
"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 v31.0rc2 - server 70016/Satoshi:31.0.0/
ipv4 npr total block
in 19 1 20
out 10 0 10 2
total 29 1 30
Local services: witness, compact filters, network limited, p2p v2
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 62184,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 62184
}
}
$ halving.sh 943939
=====================================
Bitcoin Block Halving prediction
=====================================
bc=943939
gbt=1231006505
bbt=1775494818
This is average time to mine a block
(1775494818-1231006505)/943939
bts=576.8251297751975761171260
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Tue Mar 14 19:04:28 UTC 2028
-------------------------------------
Next palindrome will be 944449
predicted to happen at this time:
Fri Apr 10 02:43:18 UTC 2026
-------------------------------------
Current mining epoch number is 468.
The next fortnight happens in block
945504 and probably around this time:
Fri Apr 17 03:45:49 UTC 2026
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
16 "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
aa553ee8cea85fe0
dc95a76ee26addfed640e64fc8fd12c9d792238dd7a6d94bedf4cfd7796354bb
28fedca04b7887ac
b0cfc453555c6174441b04b48773edd9e454227cd9ce8e3e2f4a4513fbaebd75
1957d89a90d1886f
e60144424987c961b9e8d1e05ec7026400946a8bee433ea851811401ce2f8eab
cfe855ce8ca537e1
46dc23905ab0e89d5ea5fe14f882eb96cb68c1f0e28f96d6f267be68729cb9a0
793aa6b16f184fe2
288f399824371fc9616fd44a0026b47aa68c3b423c5d1569d4d8c16b69bec790
4a89496d1d8583ca
9ddf15d0c90ea68d0d93aa174d7f0ee52d3887e8d01b31af43ba9b12e000d125
05fd879efdf20907
820a7cbb146d008a921c4b4a4a1e59ff2626c4180aec04597917b3d41d2dfb3c
6dd1586401433524
4247dc12074acbdd4ed644683d8c5ca04478fd833797cb578dd2bde9883e5c15
70e8634654f4590b
bec5cac797dae6987d69a0f1e8f7427981324333d79c9ee70ec66aeada3333e7
200a1ee50612a94b
0b720956bcfe72dbdd16bd59c935a104c09e4cfd837c0e5f1377939048f067e9
0854b6cc77e685fb
3eaef9e024dd539da5d3d2cd04b7216c036780b9514a4f95d0e61877fd974d6f
8e20d00239ea5c02
c49d97bc5301ae4eca750c767f8c3d640c7a38e4bdbba8a1c34423e78ee3c3c2
87c9d75a40cbeab0
720867a6c14c4d60cab7d7c5f323590a4c03a1311f4976680386a48dfa089123
d9c374770f75b307
99ebea71da54f434656615ef8595847decfa0acddaf96eb767355cd83aa28d22
488b39130806983a
7fcbcda894da4886a3ae9ec6615faed3ebbbf2d1fa906922ee0957787ac9d309
13f92236c972968f
4a6590f54e56e56cd671be6081443488f676877cd9d5bb48c096273ba50de45b
$ niceblack.sh $BH $BC
___ _ _ ____
/ _ \| || ||___ \
| (_) | || |_ __) |
\__, |__ _|__ <
/ / | | ___) |
/_/ |_||____/
___ ____ ___
/ _ \___ \ / _ \
| (_) |__) | (_) |
\__, |__ < \__, |
/ /___) | / /
/_/|____/ /_/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 f67f f4f3 7dcd 1f |
| 2. 8813 6.7d 18d8 5.e7 2f |
| 3. ff86 525d d283 8ab4 3f |
'=== ==== ==== ==== ==== ==='
jk: 8ab4 2afd 94