# on receiving block 931510 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-01-09T06:27:38Z
# as written in the block header
2026-01-09T06:26:57Z
$ uptime # since last reboot
06:27:38 up 148 days, 16:18, 0 users, load average: 0.43, 0.86, 1.25
$ battery.sh
50%, Power Supply Online
$ uname -smnr
Linux singer 6.12.40-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1901912 kB
$ du -h -d1 .bitcoin/
1.5G .bitcoin/testnet4
11.9G .bitcoin/indexes
4.0G .bitcoin/signet
41.9M .bitcoin/wallets
97.7G .bitcoin/blocks
18.6M .bitcoin/regtest
10.6G .bitcoin/chainstate
125.9G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 832.5G 78.0G 91% /
$ bitcoind -version
Bitcoin Core daemon version v30.1.0 bitcoind
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
931510
$ BH=$(bitcoin-cli getblockhash 931510); echo $BH
00000000000000000001adb59b9a7fef69a6d2d0589764aad233576625238841
$ bitcoin-cli getblockheader 00000000000000000001adb59b9a7fef69a6d2d0589764aad233576625238841
{
"hash": "00000000000000000001adb59b9a7fef69a6d2d0589764aad233576625238841",
"confirmations": 1,
"height": 931510,
"version": 663265280,
"versionHex": "2788a000",
"merkleroot": "a7fbbfa092f27a7de165f29dd5e3f7d2d1572d3b825735039896a8a49f8ce751",
"time": 1767940017,
"mediantime": 1767936852,
"nonce": 3472713985,
"bits": "1701ebf2",
"target": "00000000000000000001ebf20000000000000000000000000000000000000000",
"difficulty": 146472570619930.8,
"chainwork": "0000000000000000000000000000000000000001056036d136b1f4f8c312a667",
"nTx": 3403,
"previousblockhash": "000000000000000000006ccdd7a76dd42f6e72e61f3965c6fdfadb3a57820047"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 adb5 9b9a 7fef
69a6 d2d. 5897 64aa
d233 5766 2523 8841
$ : 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
931510 sf: ...1 d2d. 8841
$ : 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 .
931510 sk: 8841 a4
$ : 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 .
931510 ak: e6bd a4
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 62527,
"bytes": 25881591,
"usage": 171152400,
"total_fee": 0.04002346,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000
}
$ gmm.sh
154
## Current epoch estimation is -0.38%
## 118 of 2016, i.e. 5%, 1898 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
1.044003292117525e+21
$ bitcoin-cli getnetworkhashps 2016 931391
1.048049552337457e+21
$ bitcoin-cli getnetworkhashps 2016 929375
1.06126766979058e+21
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 931510,
"bestblock": "00000000000000000001adb59b9a7fef69a6d2d0589764aad233576625238841",
"txouts": 166249505,
"bogosize": 13019249356,
"muhash": "15a08c093162d8b85b111f0ae893a8bd8476f20bd5ee343fbe9174b467b55a8d",
"total_amount": 19973241.78419658,
"total_unspendable_amount": 230.09080342,
"block_info": {
"prevout_spent": 26393.22483992,
"coinbase": 3.15545985,
"new_outputs_ex_coinbase": 26393.19438004,
"unspendable": 0.00000003,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000003,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 931510
{
"avgfee": 895,
"avgfeerate": 3,
"avgtxsize": 483,
"blockhash": "00000000000000000001adb59b9a7fef69a6d2d0589764aad233576625238841",
"feerate_percentiles": [
1,
1,
2,
3,
4
],
"height": 931510,
"ins": 8132,
"maxfee": 90000,
"maxfeerate": 304,
"maxtxsize": 55129,
"medianfee": 423,
"mediantime": 1767936852,
"mediantxsize": 225,
"minfee": 100,
"minfeerate": 1,
"mintxsize": 139,
"outs": 9422,
"subsidy": 312500000,
"swtotal_size": 1546181,
"swtotal_weight": 3593774,
"swtxs": 3047,
"time": 1767940017,
"total_out": 2639319438007,
"total_size": 1645678,
"total_weight": 3991762,
"totalfee": 3045985,
"txs": 3403,
"utxo_increase": 1290,
"utxo_size_inc": 99893,
"utxo_increase_actual": 1149,
"utxo_size_inc_actual": 87035
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 2265662332,
"totalbytessent": 5130326526,
"timemillis": 1767940058784,
"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 v30.1.0 - server 70016/Satoshi:30.1.0/
ipv4 npr total block libre
in 25 2 27
out 14 0 14 2 4
total 39 2 41
Local services: witness, compact filters, network limited, p2p v2, libre
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 61900,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 61900
}
}
$ halving.sh 931510
=====================================
Bitcoin Block Halving prediction
=====================================
bc=931510
gbt=1231006505
bbt=1767940017
This is average time to mine a block
(1767940017-1231006505)/931510
bts=576.4113488729601690157174
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Thu Mar 9 18:23:17 UTC 2028
-------------------------------------
Next palindrome will be 932239
predicted to happen at this time:
Wed Jan 14 03:10:20 UTC 2026
-------------------------------------
Current mining epoch number is 462.
The next fortnight happens in block
933408 and probably around this time:
Wed Jan 21 22:20:45 UTC 2026
### 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
80a814ed85a41b55
2a9d0171a11b89843c7a1cc744980504b9da457952e9667f1dc7455438514428
7d86c05aacd07b59
0ee7654f654c29c29d7be365481c44be84f9cf3a381d67312382bd2bbd2f4926
450e826538b39b32
e077795d47342d66b6f61a90a24b09e125a1bd40568a116f7323ab39311eb584
13e286edfca5e630
5c832f51dcda9b39a46b607bcf89f3ad92a59db4a0fcd15154ac257af3b569f8
66b50cef4f8a020c
bc9afa2949291910e123ab2ad0971bd6e8488f6a0bdff5b9f7897c772a0307c7
73a7f992c7ffb608
0af5a154c30ec0c58dcb478ec993c61792d5cec65456861b40aa344ffb0b302e
decf2ce7f6499136
8a235c43bc4f49028cb9a6e9de8f41728c1673fdfc1d280045b239c3b5fe8298
7716053ad5fe1196
8292c5f0a9977ad76dd747f7bb766c7906a916ca9af6c90d8639f3b418563830
b84b0a562bc7fbfd
b9c15fd97d804941449c9db4403ce39f1d887914fd878034268914c2995a37f7
f8de2846a0fa3161
d20793a19a11f5de9ba107b2cc14e88713bbb9ede2d1efe0bee457ad30f1e7d1
d9a2bbafe452eb73
468962fc985ad4121be04157365d343aedd43994081c9f3aee7f666bb098d9b9
ce8d39c75e03a6c8
4e6824cc8cfa8f8b32a09014cfdb4d4a9453039f33390b6cd5e1ae0cafc97b76
2a949470987d4a1c
8146fd1091a92d4893faa1d24660fab7a0849546d36779b6f2940e36d40babc7
bf84cb0471ea5381
82de0c0dae5e896ff991397c60b95b7ff5be936b9e0405d6ce3edc09a5a62aeb
5edd4df6e5dd001e
7d1fab146d309af70f662879e34f20ca1caae5388790013ab5bdbd362f6ccbfc
d41ad715a9c8aba7
e61b8de4418ad589cc4b2a702928c2d7dfa10cbc090d1ae9b00007047f4a6f9a
1472408a02a557b5
a32e3410b0405dd7118d59b1db1bea908855b6007f0187bfc4cc1cf6c7803e16
$ niceblack.sh $BH $BC
___ ____ __ _____ __ ___
/ _ \___ \/_ | | ____/_ |/ _ \
| (_) |__) || | | |__ | | | | |
\__, |__ < | | |___ \ | | | | |
/ /___) || | ___) || | |_| |
/_/|____/ |_| |____/ |_|\___/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 adb5 9b9a 7fef 1f |
| 2. 69a6 d2d. 5897 64aa 2f |
| 3. d233 5766 2523 8841 3f |
'=== ==== ==== ==== ==== ==='
ak: e6bd a4
...............| |.|.||.||.||.|.|