# on receiving block 904220 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-07-06T01:25:22Z
# as written in the block header
2025-07-06T01:24:43Z
$ uptime # since last reboot
01:25:21 up 153 days, 13:05, 0 users, load average: 3.21, 2.47, 2.18
$ battery.sh
140%, Power Supply Online
$ uname -smnr
Linux singer 6.6.37-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1516120 kB
$ du -h -d1 .bitcoin/
11.3G .bitcoin/indexes
2.8G .bitcoin/signet
3.8M .bitcoin/wallets
97.7G .bitcoin/blocks
11.0G .bitcoin/chainstate
122.8G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 837.7G 72.8G 92% /
$ bitcoind -version
Bitcoin Core daemon version v29.99.0-5f9c5597106e
Copyright (C) 2009-2025 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
904220
$ BH=$(bitcoin-cli getblockhash 904220); echo $BH
000000000000000000014edc5d22daef58a213dce91efe3338d4e217db4ee739
$ bitcoin-cli getblockheader 000000000000000000014edc5d22daef58a213dce91efe3338d4e217db4ee739
{
"hash": "000000000000000000014edc5d22daef58a213dce91efe3338d4e217db4ee739",
"confirmations": 1,
"height": 904220,
"version": 1006632960,
"versionHex": "3c000000",
"merkleroot": "475f5e0b2f6c002231406f466eaf74db2f1e3a4781250689d2698ddc1ecc1102",
"time": 1751765083,
"mediantime": 1751763826,
"nonce": 2589863736,
"bits": "17026816",
"target": "0000000000000000000268160000000000000000000000000000000000000000",
"difficulty": 116958512019762.1,
"chainwork": "0000000000000000000000000000000000000000d002225867dd1a0f93ad1e06",
"nTx": 4422,
"previousblockhash": "000000000000000000015227aed986f7fde169a0d9c1d9dd7b8fccb88399ebd4"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 4edc 5d22 daef
58a2 13dc e91e fe33
38d4 e217 db4e e739
$ : 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
904220 sf: ...1 e739
$ : 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 .
904220 sk: e739 b4
$ : 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 .
904220 ak: 73f7 b4
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 49960,
"bytes": 15857737,
"usage": 103024144,
"total_fee": 0.09654417,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true
}
$ gmm.sh
607
## Current epoch estimation is +0.82%
## 1052 of 2016, i.e. 52%, 964 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
8.435531557382517e+20
$ bitcoin-cli getnetworkhashps 2016 903167
8.366861911869141e+20
$ bitcoin-cli getnetworkhashps 2016 901151
9.04687914735697e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 904220,
"bestblock": "000000000000000000014edc5d22daef58a213dce91efe3338d4e217db4ee739",
"txouts": 167411196,
"bogosize": 13116058944,
"muhash": "f32f15ae84a1541192b2de72201672779f1859b6010c8648821e314469060947",
"total_amount": 19887969.57954165,
"total_unspendable_amount": 221.04545835,
"block_info": {
"prevout_spent": 559.44032662,
"coinbase": 3.14470401,
"new_outputs_ex_coinbase": 559.42062261,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 904220
{
"avgfee": 445,
"avgfeerate": 1,
"avgtxsize": 396,
"blockhash": "000000000000000000014edc5d22daef58a213dce91efe3338d4e217db4ee739",
"feerate_percentiles": [
1,
1,
1,
2,
3
],
"height": 904220,
"ins": 6174,
"maxfee": 134104,
"maxfeerate": 150,
"maxtxsize": 74044,
"medianfee": 254,
"mediantime": 1751763826,
"mediantxsize": 354,
"minfee": 0,
"minfeerate": 0,
"mintxsize": 150,
"outs": 13055,
"subsidy": 312500000,
"swtotal_size": 1698315,
"swtotal_weight": 3773928,
"swtxs": 4347,
"time": 1751765083,
"total_out": 55942062261,
"total_size": 1752741,
"total_weight": 3991632,
"totalfee": 1970401,
"txs": 4422,
"utxo_increase": 6881,
"utxo_size_inc": 445433,
"utxo_increase_actual": 3344,
"utxo_size_inc_actual": 242059
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 5173362003,
"totalbytessent": 10791250240,
"timemillis": 1751765122992,
"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 v29.99.0-5f9c5597106e - server 70016/Satoshi:29.99.0/
ipv4 npr total block libre
in 24 2 26
out 14 0 14 2 4
total 38 2 40
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 61562,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 61562
}
}
$ halving.sh 904220
=====================================
Bitcoin Block Halving prediction
=====================================
bc=904220
gbt=1231006505
bbt=1751765083
This is average time to mine a block
(1751765083-1231006505)/904220
bts=575.9195793948603272872450
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Fri Mar 3 18:57:19 UTC 2028
-------------------------------------
Next palindrome will be 904409
predicted to happen at this time:
Mon Jul 7 07:38:51 UTC 2025
-------------------------------------
Current mining epoch number is 448.
The next fortnight happens in block
905184 and probably around this time:
Sat Jul 12 11:37:49 UTC 2025
### 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
1956ddc4d37429f5
e9e4809e3a3fbfc39672e2f8ff8d3a72484a701cb4207a793da246c6c5ee8a15
728a54fb2bae1004
fb990c98e254b9065a14b849c71e63de92249e74b3e432589ae5dcb92352e38d
7b9a1ca6d304d08a
6704ec7448acad70860759e8be6448226643a62f363cb80c81a5411f9f5a4b12
08fff73d0f9c61e1
194d3a4b8f77f5349bb06d54603a26a4ccd58de4ac27af73bd8b696e33a685cb
1195be88043551ce
d20a686527243d5f71c111ec6307188988872d47a4a63827ed88a81774aa2fca
8b58bf2b34e0580d
9f358524256122bee8dfcb987d6482600e1bf808cc4d5782affb5e0fad1339be
e7bb3d482e5189fd
197cbee7eecdf20a27e48d4a40076c46a19ea423bd3ea874a834ee68e3bb5656
524a03cbf24b1585
ac96e3a1ce3b6c2f5a22d652fae479f9ca5e52104821f9de92e9bbd402ad2d17
0e6c9b2cae4c6519
5f19d67f5f23b28043e5a8a3eba18eda3a462c0fa3d42f03c0d2d517d0041049
a1299e79849a8cd5
575f3a46a2f03e400c9c36f072bff891dd501c7cd5022e3cefb27d367187954e
88e33d6cdf1c8ee9
6eef292f68ab3a490405366f3aa223cb68e5793922cca646c6168ab377f4c4ae
3ee822f843b047c3
01a1bd21be4680f26757407216c4b1805543de35bfd1ee0ce8b060b32f5b0a97
2b0692144af1130d
0e67824ff45f6053aa9490ae71e05556e05c02f57263c3c77068b41c4cde2735
2e87a04adfb4bcc9
10ed95cb383f65a0ae97071704682f188278af9fee05a1895f83275b55b725f6
237473f4de223db3
739bf6746144ef8fff258eaea24b6e8fb494df5baef3e4a778eeaad6128b7e9a
9b0cbecdbc5284d0
94ce8b0f4d805499698686001296e1b93b52bfb0254e19f5498beb7392efc194
53ed8d63e0eff5a6
9f3bcf7abacba11c812399cafe7ff8eb8306508031096fa5cb429cff2a193109
$ niceblack.sh $BH $BC
___ ___ _ _
/ _ \ / _ \| || |
| (_) | | | | || |_
\__, | |_| |__ _|
/_/ \___/ |_|
____ ____ ___
|___ \|___ \ / _ \
__) | __) | | | |
/ __/ / __/| |_| |
|_____|_____|\___/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 4edc 5d22 daef 1f |
| 2. 58a2 13dc e91e fe33 2f |
| 3. 38d4 e217 db4e e739 3f |
'=== ==== ==== ==== ==== ==='
ak: 73f7 b4