# on receiving block 904357 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-07-06T22:08:27Z
# as written in the block header
2025-07-06T22:08:17Z
$ uptime # since last reboot
22:08:27 up 154 days, 9:48, 0 users, load average: 2.06, 2.73, 3.19
$ battery.sh
138%, Power Supply Online
$ uname -smnr
Linux singer 6.6.37-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1468692 kB
$ du -h -d1 .bitcoin/
11.3G .bitcoin/indexes
2.8G .bitcoin/signet
3.8M .bitcoin/wallets
97.7G .bitcoin/blocks
11.1G .bitcoin/chainstate
123.0G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 837.9G 72.6G 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
<https://bitcoincore.org/> for further information about the software.
The source code is available from <https://github.com/bitcoin/bitcoin>.
This is experimental software.
Distributed under the MIT software license, see the accompanying file COPYING
or <https://opensource.org/license/MIT>
$ BC=$(bitcoin-cli getblockcount); echo $BC
904357
$ BH=$(bitcoin-cli getblockhash 904357); echo $BH
000000000000000000017c24019c5bcaf040c65731adc12a38b1032f404e2402
$ bitcoin-cli getblockheader 000000000000000000017c24019c5bcaf040c65731adc12a38b1032f404e2402
{
"hash": "000000000000000000017c24019c5bcaf040c65731adc12a38b1032f404e2402",
"confirmations": 1,
"height": 904357,
"version": 536895488,
"versionHex": "20006000",
"merkleroot": "c14e6f95d5d79311af65116eaca780ecce51ac4994a29410c76fb95c623612d9",
"time": 1751839697,
"mediantime": 1751836978,
"nonce": 3615799857,
"bits": "17026816",
"target": "0000000000000000000268160000000000000000000000000000000000000000",
"difficulty": 116958512019762.1,
"chainwork": "0000000000000000000000000000000000000000d03b0fb0584166455fe27f74",
"nTx": 1517,
"previousblockhash": "00000000000000000001d48cebe8057a5afdedf2cf5ceaeb0d2fd4628a9445ee"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 7c24 .19c 5bca
f.4. c657 31ad c12a
38b1 .32f 4.4e 24.2
$ : 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
904357 sf: ...1 .19c f.4. .32f 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 .
904357 sk: 24.2 64
$ : 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 .
904357 ak: bf31 64
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 20123,
"bytes": 15879581,
"usage": 93220480,
"total_fee": 0.07581631,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true
}
$ gmm.sh
476
## Current epoch estimation is +3.13%
## 1189 of 2016, i.e. 58%, 827 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
8.629212130135352e+20
$ bitcoin-cli getnetworkhashps 2016 903167
8.366861911869141e+20
$ bitcoin-cli getnetworkhashps 2016 901151
9.04687914735697e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 904357,
"bestblock": "000000000000000000017c24019c5bcaf040c65731adc12a38b1032f404e2402",
"txouts": 167518772,
"bogosize": 13123757575,
"muhash": "f4ca21ceb282ac92a5fcc805f30508a379f53e42acb058fcc55665df0a07554f",
"total_amount": 19888397.70436433,
"total_unspendable_amount": 221.04563567,
"block_info": {
"prevout_spent": 1328.86879976,
"coinbase": 3.13811717,
"new_outputs_ex_coinbase": 1328.85568259,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 904357
{
"avgfee": 865,
"avgfeerate": 2,
"avgtxsize": 585,
"blockhash": "000000000000000000017c24019c5bcaf040c65731adc12a38b1032f404e2402",
"feerate_percentiles": [
1,
1,
1,
2,
3
],
"height": 904357,
"ins": 4770,
"maxfee": 140567,
"maxfeerate": 104,
"maxtxsize": 86437,
"medianfee": 322,
"mediantime": 1751836978,
"mediantxsize": 224,
"minfee": 0,
"minfeerate": 0,
"mintxsize": 150,
"outs": 4401,
"subsidy": 312500000,
"swtotal_size": 760435,
"swtotal_weight": 1745770,
"swtxs": 1313,
"time": 1751839697,
"total_out": 132885568259,
"total_size": 887416,
"total_weight": 2253694,
"totalfee": 1311717,
"txs": 1517,
"utxo_increase": -369,
"utxo_size_inc": -32396,
"utxo_increase_actual": -449,
"utxo_size_inc_actual": -40040
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 5589145989,
"totalbytessent": 12052312889,
"timemillis": 1751839708182,
"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 26 2 28
out 14 0 14 2 4
total 40 2 42
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 61534,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 61534
}
}
$ halving.sh 904357
=====================================
Bitcoin Block Halving prediction
=====================================
bc=904357
gbt=1231006505
bbt=1751839697
This is average time to mine a block
(1751839697-1231006505)/904357
bts=575.9148390349839333538266
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Fri Mar 3 17:34:21 UTC 2028
-------------------------------------
Next palindrome will be 904409
predicted to happen at this time:
Mon Jul 7 06:27:24 UTC 2025
-------------------------------------
Current mining epoch number is 448.
The next fortnight happens in block
905184 and probably around this time:
Sat Jul 12 10:26:18 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
19 "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
88e33d6cdf1c8ee9
6eef292f68ab3a490405366f3aa223cb68e5793922cca646c6168ab377f4c4ae
3ee822f843b047c3
01a1bd21be4680f26757407216c4b1805543de35bfd1ee0ce8b060b32f5b0a97
2b0692144af1130d
0e67824ff45f6053aa9490ae71e05556e05c02f57263c3c77068b41c4cde2735
237473f4de223db3
739bf6746144ef8fff258eaea24b6e8fb494df5baef3e4a778eeaad6128b7e9a
9b0cbecdbc5284d0
94ce8b0f4d805499698686001296e1b93b52bfb0254e19f5498beb7392efc194
53ed8d63e0eff5a6
9f3bcf7abacba11c812399cafe7ff8eb8306508031096fa5cb429cff2a193109
db3c29d4141c1dd0
27acf2529cd494a3668be495a7011c957ce2cbcb78b8d9bd17a76fa3987373ea
56692c347885ee65
80cbe79f9249800bde55d9cb81f2d11cae9d8c1fbb4aee88907408721f34bbbf
5edd4df6e5dd001e
e4882072d8a49c4b8b3c21873d01f4d6331c3b12a0b33c4fc672fa5bff03949b
f4c5d9a43df982c0
709be18045fe1e23113c5258ad5ccb6a5f456a99dffa0d5cda6da5eed6ea7fd0
a97a2ce43e21a7c2
e6a8108e5b470bedb882ebd4c51a7d612313e62b0bf0fcf76017b4a36aa1b054
$ niceblack.sh $BH $BC
___ ___ _ _
/ _ \ / _ \| || |
| (_) | | | | || |_
\__, | | | |__ _|
/ /| |_| | | |
/_/ \___/ |_|
____ _____ ______
|___ \| ____|____ |
__) | |__ / /
|__ <|___ \ / /
___) |___) | / /
|____/|____/ /_/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 7c24 .19c 5bca 1f |
| 2. f.4. c657 31ad c12a 2f |
| 3. 38b1 .32f 4.4e 24.2 3f |
'=== ==== ==== ==== ==== ==='
ak: bf31 64