# on receiving block 942521 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-03-27T21:00:35Z
# as written in the block header
2026-03-27T21:00:15Z
$ uptime # since last reboot
21:00:35 up 8 days, 11:53, 0 users, load average: 1.27, 1.14, 1.45
$ battery.sh
100%, Power Supply Online
$ uname -smnr
Linux singer 6.18.2-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2313152 kB
$ du -h -d1 .bitcoin/
12.1G .bitcoin/indexes
4.3G .bitcoin/signet
2.7M .bitcoin/wallets
97.7G .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 433.2G 477.3G 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
942521
$ BH=$(bitcoin-cli getblockhash 942521); echo $BH
00000000000000000000da24bb91f69a67fd6a8edcaf4c0b7a085ea73e303ae6
$ bitcoin-cli getblockheader 00000000000000000000da24bb91f69a67fd6a8edcaf4c0b7a085ea73e303ae6
{
"hash": "00000000000000000000da24bb91f69a67fd6a8edcaf4c0b7a085ea73e303ae6",
"confirmations": 1,
"height": 942521,
"version": 537214976,
"versionHex": "20054000",
"merkleroot": "56d966e78679376253ef6c5511800f41913595f7cf4046bb368b3f3a048cee36",
"time": 1774645215,
"mediantime": 1774642802,
"nonce": 2999049617,
"bits": "17021a91",
"target": "000000000000000000021a910000000000000000000000000000000000000000",
"difficulty": 133793147307542.8,
"chainwork": "00000000000000000000000000000000000000011ac3bcde9891b389ce3c4138",
"nTx": 4769,
"previousblockhash": "00000000000000000000d0a83ec69a161a182cf6516cd11d437a459c14c6dc1b"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
.... da24 bb91 f69a
67fd 6a8e dcaf 4c.b
7a.8 5ea7 3e3. 3ae6
$ : 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
942521 sf: 4c.b 7a.8 3e3. 3ae6
$ : 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 .
942521 sk: 3ae6 85
$ : 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 .
942521 ak: 2a81 85
$ : Following is the jointkode
942521 jk: 3ae6 2a81 85
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 21561,
"bytes": 7865766,
"usage": 49551984,
"total_fee": 0.00863526,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 42,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000,
"limitclustercount": 64,
"limitclustersize": 101000,
"optimal": true
}
$ gmm.sh
109
## Current epoch estimation is +0.47%
## 1049 of 2016, i.e. 52%, 967 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
9.621616425656493e+20
$ bitcoin-cli getnetworkhashps 2016 941471
9.575843405435805e+20
$ bitcoin-cli getnetworkhashps 2016 939455
1.037983005536264e+21
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 942521,
"bestblock": "00000000000000000000da24bb91f69a67fd6a8edcaf4c0b7a085ea73e303ae6",
"txouts": 165135075,
"bogosize": 12940013106,
"muhash": "202bfa84543d48e8b0bd6a9e8e101ff19c9c3d1dac0c92f8c5f23da0539c54a4",
"total_amount": 20007651.15530772,
"total_unspendable_amount": 230.09469228,
"block_info": {
"prevout_spent": 6021.93042002,
"coinbase": 3.14085396,
"new_outputs_ex_coinbase": 6021.91456606,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 942521
{
"avgfee": 332,
"avgfeerate": 1,
"avgtxsize": 348,
"blockhash": "00000000000000000000da24bb91f69a67fd6a8edcaf4c0b7a085ea73e303ae6",
"feerate_percentiles": [
0,
0,
1,
2,
3
],
"height": 942521,
"ins": 7057,
"maxfee": 59288,
"maxfeerate": 302,
"maxtxsize": 154641,
"medianfee": 17,
"mediantime": 1774642802,
"mediantxsize": 222,
"minfee": 13,
"minfeerate": 0,
"mintxsize": 150,
"outs": 11804,
"subsidy": 312500000,
"swtotal_size": 1576774,
"swtotal_weight": 3657118,
"swtxs": 4613,
"time": 1774645215,
"total_out": 602191456606,
"total_size": 1661431,
"total_weight": 3995746,
"totalfee": 1585396,
"txs": 4769,
"utxo_increase": 4747,
"utxo_size_inc": 345093,
"utxo_increase_actual": 1868,
"utxo_size_inc_actual": 138580
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 460024999,
"totalbytessent": 785504393,
"timemillis": 1774645235762,
"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 16 1 17
out 10 0 10 2
total 26 1 27
Local services: witness, compact filters, network limited, p2p v2
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 64063,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 64063
}
}
$ halving.sh 942521
=====================================
Bitcoin Block Halving prediction
=====================================
bc=942521
gbt=1231006505
bbt=1774645215
This is average time to mine a block
(1774645215-1231006505)/942521
bts=576.7915337785218806563666
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Tue Mar 14 09:16:32 UTC 2028
-------------------------------------
Next palindrome will be 943349
predicted to happen at this time:
Thu Apr 2 09:39:58 UTC 2026
-------------------------------------
Current mining epoch number is 467.
The next fortnight happens in block
943488 and probably around this time:
Fri Apr 3 07:56:12 UTC 2026
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
9 "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
53cb09911245d260
50c22bb3c18ff9ccf388cc1dd721210fd780266fa55a7565f136069a70f52e26
070fa09d81bddbfc
cb4882d8db9a875b5cdc44096e8f4dfaaa6496ebeaff14c0e7e8011995a1c30c
57b0f3d93065c3d3
b0140909cf87cce0128fa7b18db592b217a535d544f4d609542aa393a01828d2
95533200f3e856ae
25c8f82ea3189e5953d21fd5afb8030ba0d630a32caf680b5052c18d315eadac
89615755e7e06376
28b12b914c7eaf6e76f2149e25788244ec169d3aac1aeb3cf95955ea8d853db9
396fd83d1d6b5e68
0e804e9ee9c2860ee9a7141000fd426c9ebb19d4e0195b1be38d5dcbcaa9ac74
79d2c4cd32da7162
cc1eefe454c765b858260652e87c39cdebfa191255622a7189dc10e95fc34cb6
1fb3bf7327225ba5
dbc754eeb5cbf1a0bfa02053fed0311cc60616485009944be74478cab06b3ef4
21889d03bdb1c6c4
5abb4c1531d351ef81a0c57b91458497b1bc34ee135c9030faee195fbcec59b6
$ niceblack.sh $BH $BC
| | |
_ \ | _ \ _| | /
_.__/_|\___/\__|_\_\
_ \ | |_ ) __|_ )_ |
\_ /__ _| / __ \ / |
_/ _|___|___/___| _|
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. .... da24 bb91 f69a 1f |
| 2. 67fd 6a8e dcaf 4c.b 2f |
| 3. 7a.8 5ea7 3e3. 3ae6 3f |
'=== ==== ==== ==== ==== ==='
jk: 3ae6 2a81 85