# on receiving block 937574 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-02-20T19:09:39Z
# as written in the block header
2026-02-20T19:09:33Z
$ uptime # since last reboot
19:09:39 up 4 days, 40 min, 0 users, load average: 1.68, 1.80, 2.13
$ battery.sh
100%, Power Supply Online
$ uname -smnr
Linux singer 6.18.2-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2305488 kB
$ du -h -d1 .bitcoin/
12.0G .bitcoin/indexes
4.2G .bitcoin/signet
2.6M .bitcoin/wallets
97.8G .bitcoin/blocks
18.6M .bitcoin/regtest
10.6G .bitcoin/chainstate
124.8G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 433.3G 477.1G 48% /
$ bitcoind -version
Bitcoin Core daemon version v30.2.0 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
937574
$ BH=$(bitcoin-cli getblockhash 937574); echo $BH
000000000000000000015c569fed94373055fc011fb2b1661e8b060f727ed47b
$ bitcoin-cli getblockheader 000000000000000000015c569fed94373055fc011fb2b1661e8b060f727ed47b
{
"hash": "000000000000000000015c569fed94373055fc011fb2b1661e8b060f727ed47b",
"confirmations": 1,
"height": 937574,
"version": 536952832,
"versionHex": "20014000",
"merkleroot": "29ff39b268e49ca866ef5e5214e20a189dcddc21bfc7e386e76f2eb7acdbc4df",
"time": 1771614573,
"mediantime": 1771613385,
"nonce": 2264789775,
"bits": "1701f303",
"target": "00000000000000000001f3030000000000000000000000000000000000000000",
"difficulty": 144398401518100.9,
"chainwork": "000000000000000000000000000000000000000110fccefb04b312e041f23bee",
"nTx": 1138,
"previousblockhash": "00000000000000000000960cb0a4bbde966582332daea22f3906c12b3b083b7d"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 5c56 9fed 9437
3.55 fc.1 1fb2 b166
1e8b .6.f 727e d47b
$ : 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
937574 sf: ...1 3.55 fc.1 .6.f 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 .
937574 sk: d47b 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 .
937574 ak: 8b8c 84
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 28929,
"bytes": 13454847,
"usage": 70973776,
"total_fee": 0.01703787,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000
}
$ gmm.sh
126
## Current epoch estimation is -0.17%
## 134 of 2016, i.e. 6%, 1882 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
1.030991181480735e+21
$ bitcoin-cli getnetworkhashps 2016 937439
1.03283744073678e+21
$ bitcoin-cli getnetworkhashps 2016 935423
9.009048549126172e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 937574,
"bestblock": "000000000000000000015c569fed94373055fc011fb2b1661e8b060f727ed47b",
"txouts": 164556961,
"bogosize": 12894037624,
"muhash": "26f53c8eb2be94c0aecf8263af8170f631a77c3dd2f57b45666ad4b71c1d5e27",
"total_amount": 19992191.78170969,
"total_unspendable_amount": 230.09329031,
"block_info": {
"prevout_spent": 2527.39167636,
"coinbase": 3.13701507,
"new_outputs_ex_coinbase": 2527.37966129,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 937574
{
"avgfee": 1056,
"avgfeerate": 2,
"avgtxsize": 918,
"blockhash": "000000000000000000015c569fed94373055fc011fb2b1661e8b060f727ed47b",
"feerate_percentiles": [
1,
1,
1,
2,
3
],
"height": 937574,
"ins": 4379,
"maxfee": 91084,
"maxfeerate": 73,
"maxtxsize": 159540,
"medianfee": 387,
"mediantime": 1771613385,
"mediantxsize": 225,
"minfee": 99,
"minfeerate": 1,
"mintxsize": 150,
"outs": 3465,
"subsidy": 312500000,
"swtotal_size": 947802,
"swtotal_weight": 1912653,
"swtxs": 1001,
"time": 1771614573,
"total_out": 252737966129,
"total_size": 1044520,
"total_weight": 2299525,
"totalfee": 1201507,
"txs": 1138,
"utxo_increase": -914,
"utxo_size_inc": -65459,
"utxo_increase_actual": -952,
"utxo_size_inc_actual": -69434
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 1835021692,
"totalbytessent": 3222216348,
"timemillis": 1771614580154,
"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 v30.2.0 - server 70016/Satoshi:30.2.0/
ipv4 npr total block libre
in 16 2 18
out 14 0 14 2 4
total 30 2 32
Local services: witness, compact filters, network limited, p2p v2, libre
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 63290,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 63290
}
}
$ halving.sh 937574
=====================================
Bitcoin Block Halving prediction
=====================================
bc=937574
gbt=1231006505
bbt=1771614573
This is average time to mine a block
(1771614573-1231006505)/937574
bts=576.6024776684531904114337
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Sun Mar 12 02:08:03 UTC 2028
-------------------------------------
Next palindrome will be 937739
predicted to happen at this time:
Sat Feb 21 21:35:12 UTC 2026
-------------------------------------
Current mining epoch number is 465.
The next fortnight happens in block
939456 and probably around this time:
Thu Mar 5 08:35:38 UTC 2026
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
18 "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
2cc2e80f93695aca
ba385c8844882d2702cdb00a26e72702146bee662683120fd43b334de6255303
03cffffea1416bf2
be5dd8d36dd8927acd6cb9cbd31f69b0ddcd2e077ed50ec33977c28dcf5eedba
f8296a068f754e4c
5c1845bd354fde462110ba1bef6981b9beffcb4914bf835fda64b91840e6b1c4
dd5d423ffdfce6d9
92b1a5595109f486cb572f4abc1c928790458e82916de9a4234d515b949b712d
5047d5678d7df13f
dac3ef2d593a5525694abff3e33c1cf62df1dc0d9d43c81ccf70558d3be1bba8
88985320f20ecc73
7f7529154a88587d520e6bc076980fe45b5d8b1213f2316a8919fa76648007c1
93f43076b3bb3924
453873ddb1828d8e7204c7324d58001b74ffb1f018a95874ae96fe31b646c477
e7bb3d482e5189fd
2153b16db6db1a7e4779009a2d739cf559fe98fd4ede61981dcae13281f3a3a8
e61e016b0081794e
4b5629a49e4e3ecc9ffeb79d72266d570418c253be1263d8a2e60a06104855d2
b3d9f9c3d0face61
3707672eeed142fc67c66ffa719199421e8522140664d80178276621b19e54d7
38a2937f5e488f1f
1026d34a876b4f5ac8388918208d7be5870ca50225edf96fa686d6bfad07549c
2f483f8248b737c5
c293b6efa35f215df540d7b5963cbc448e6cd10bc9f198e80b9cdd180a3a7334
8f35bb2a8edb5934
3718e11d556f393dcf244960f529609dadb0e8301c7496ec448032958cfe05f4
bf77d7a51641e024
ef9464f53ed7f52fdbb48dc1a9decac01aecfc19edbbb7a4a729a151ab12c716
846abf8a428a4628
5031fa45c12fae789e7a39f51a605124394e9aef71b4cd01837c142848a04b54
f3bab9a46fe45df8
ac239f568763218de5b09020a38c17e464c50839084bf3100dc8a09633b0a731
202e56d27b722b14
eb0433764562915de01f4e9918b4f68551ef044f223fd1ded66ac1ba1993447b
952c29ffb60124fb
d9a691c57556f6dcff6b3a78544859ffd11408291d871c2cf471c74c87248453
$ niceblack.sh $BH $BC
___ __________
/ _ \___ /___ |
| (_) ||_ \ / /
\__, |__) |/ /
/_/____//_/
____ _____ _ _
| ___|___ | || |
|___ \ / /| || |_
___) |/ / |__ _|
|____//_/ |_|
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 5c56 9fed 9437 1f |
| 2. 3.55 fc.1 1fb2 b166 2f |
| 3. 1e8b .6.f 727e d47b 3f |
'=== ==== ==== ==== ==== ==='
ak: 8b8c 84