# on receiving block 921655 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-10-31T20:01:21Z
# as written in the block header
2025-10-31T20:01:14Z
$ uptime # since last reboot
20:01:21 up 79 days, 5:52, 0 users, load average: 1.04, 1.45, 1.98
$ battery.sh
55%, Power Supply Online
$ uname -smnr
Linux singer 6.12.40-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2383592 kB
$ du -h -d1 .bitcoin/
1.5G .bitcoin/testnet4
11.7G .bitcoin/indexes
3.4G .bitcoin/signet
41.7M .bitcoin/wallets
97.7G .bitcoin/blocks
18.6M .bitcoin/regtest
10.7G .bitcoin/chainstate
125.2G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 830.6G 79.8G 91% /
$ bitcoind -version
Bitcoin Core daemon version libre-relay-v30.0-1
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
921655
$ BH=$(bitcoin-cli getblockhash 921655); echo $BH
000000000000000000016370311b9ade4dac83c93ca3d49d0c3398c39640e598
$ bitcoin-cli getblockheader 000000000000000000016370311b9ade4dac83c93ca3d49d0c3398c39640e598
{
"hash": "000000000000000000016370311b9ade4dac83c93ca3d49d0c3398c39640e598",
"confirmations": 1,
"height": 921655,
"version": 604094464,
"versionHex": "2401c000",
"merkleroot": "ea6efbf803c4bdc9c0227acb64105b536288caf5079afaeb36b62983e38b056e",
"time": 1761940874,
"mediantime": 1761939032,
"nonce": 2453907869,
"bits": "1701cdfb",
"target": "00000000000000000001cdfb0000000000000000000000000000000000000000",
"difficulty": 155973032196071.9,
"chainwork": "0000000000000000000000000000000000000000f0c87b2db9b7f73c7838dc90",
"nTx": 3576,
"previousblockhash": "00000000000000000001134f38e369c2391c92da71bb9891ed4f56e06cc8e670"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 637. 311b 9ade
4dac 83c9 3ca3 d49d
.c33 98c3 964. e598
$ : 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
921655 sf: ...1 637. .c33 964. 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 .
921655 sk: e598 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 .
921655 ak: .9c7 84
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 13128,
"bytes": 6979771,
"usage": 38488976,
"total_fee": 0.02069298,
"maxmempool": 300000000,
"mempoolminfee": 0.00000001,
"minrelaytxfee": 0.00000001,
"incrementalrelayfee": 0.00000001,
"unbroadcastcount": 0,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000
}
$ gmm.sh
294
## Current epoch estimation is -0.02%
## 343 of 2016, i.e. 17%, 1673 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
1.113792370955033e+21
$ bitcoin-cli getnetworkhashps 2016 921311
1.11405143592317e+21
$ bitcoin-cli getnetworkhashps 2016 919295
1.049978271078539e+21
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 921655,
"bestblock": "000000000000000000016370311b9ade4dac83c93ca3d49d0c3398c39640e598",
"txouts": 166651258,
"bogosize": 13049994079,
"muhash": "d66a86dbf7d329713ea3e9055453c23b0ffea33a66d51e803bac01dde7eeb94f",
"total_amount": 19942444.91409894,
"total_unspendable_amount": 230.08590106,
"block_info": {
"prevout_spent": 4129.16453446,
"coinbase": 3.14263962,
"new_outputs_ex_coinbase": 4129.14689484,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 921655
{
"avgfee": 493,
"avgfeerate": 1,
"avgtxsize": 531,
"blockhash": "000000000000000000016370311b9ade4dac83c93ca3d49d0c3398c39640e598",
"feerate_percentiles": [
0,
0,
1,
2,
3
],
"height": 921655,
"ins": 6398,
"maxfee": 67838,
"maxfeerate": 150,
"maxtxsize": 98969,
"medianfee": 113,
"mediantime": 1761939032,
"mediantxsize": 354,
"minfee": 0,
"minfeerate": 0,
"mintxsize": 150,
"outs": 9820,
"subsidy": 312500000,
"swtotal_size": 1801126,
"swtotal_weight": 3599437,
"swtxs": 3427,
"time": 1761940874,
"total_out": 412914689484,
"total_size": 1899242,
"total_weight": 3991901,
"totalfee": 1763962,
"txs": 3576,
"utxo_increase": 3422,
"utxo_size_inc": 227015,
"utxo_increase_actual": 1426,
"utxo_size_inc_actual": 103611
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 267965112,
"totalbytessent": 569655783,
"timemillis": 1761940881829,
"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 libre-relay-v30.0-1 - server 70016/Satoshi:30.0.0/
ipv4 npr total block libre
in 20 2 22
out 14 0 14 2 4
total 34 2 36
Local services: witness, compact filters, network limited, p2p v2, libre
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 64723,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 64723
}
}
$ halving.sh 921655
=====================================
Bitcoin Block Halving prediction
=====================================
bc=921655
gbt=1231006505
bbt=1761940874
This is average time to mine a block
(1761940874-1231006505)/921655
bts=576.0656568177280894390097
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Sun Mar 5 13:33:40 UTC 2028
-------------------------------------
Next palindrome will be 922229
predicted to happen at this time:
Tue Nov 4 15:52:15 UTC 2025
-------------------------------------
Current mining epoch number is 457.
The next fortnight happens in block
923328 and probably around this time:
Tue Nov 11 23:43:51 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
21 "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
ceec243f9226b854
7e3b9fd640f9c8c5aa2b7707e674c14f3861f07cd2f445578650e955b237e24d
b05212d343054ed0
b51f537f90c3a60f579490f11825db777d94b772222f87ad1f6295599c29fe20
8c22f5318d1d06a5
84f8a2d45921294e1563b924e28620263ea7846d035c316f893fe1420df3a2f6
8637c92b649bd493
60cae0c40623ebe5e666bc3fedb6b3c36f1f1e37892a450cce534a4056d22928
aadd5da680e7089e
23317222ae516873a503abcf485422e9d6b1e7bf865825debd584c5332d58189
c302f5e639a7c3f9
43094c785c71a2231e9db20d225f0bcfaed414c5ff3e7d2a80a7a1f0cac90182
adab10181915cb13
c337c0de335985b54a44566439d0c5f95faefeaba8980a4ba1976820608ee9ed
58ba96cd7a520659
30e4cb3f122341bd7bfa4290cbba82f365c0e5c727580de40a102402ad97663e
50f629ebfbfba5de
c8a740023d8b7e771cc7cda1c249c3c68e67cba1e1be32bd90df87aa92ce5ab0
54340b8f4c9ff9df
06140c3c512d242bb90ee9ec7d1d8632c6d357b4b355da389e44bb05c51a4b47
5edd4df6e5dd001e
d0f5c12dde5b00b6d80692b43de9af89c8d7f44ba4fe82cd89be0302c7d91160
9282c1cc2a89f952
676652d4134157e03d5d1d5ad8106812c85fd0217e2208727f4430527d4e10b4
53c9c142228187ab
0ea06ba26ba9ccf4119ef434c8ca1a771498700a1f00918dd5195af708a66607
2b758280cec18458
0941a415234a602bffdeea87cce951338a622e085ab4ebd26d7a90b160df001a
6ab310f97a2f7da3
b505cab3fe4a82e9df686fccac9034c44b7095516c88a88b08c320835367e3ec
4841d18fe1f6a63d
45f425688516f560631d921263c4df9715bd3812d118a94819c2e8acd02cc95b
0b98ea9564355e22
bdf646ae00bf9eb82b785be1a91c94212457cef646b295da1a6ca65d946cfc99
d998bebe6df9999e
073aae35ef865975fc3d033f0a74e09294cce851538fe1ddd7215dcf2c9eeea9
f673b39e6f930954
e28801b591b423ab25416ea8f46c944f8f2953ab5294a69a19fcba2b03235d48
16b2599db0a4600f
302b3b38662295302782fd8b508c6a84ea4ffcdd98469cf70f94b7ac3a492b97
2040a4c4d8eb0e95
c4521dd8aa14ff22afa0f1f3cb15ae13835161de3d64213f773194566d0eb9a2
$ niceblack.sh $BH $BC
___ ___ __ __ _____ _____
/ _ \__ \/_ | / /| ____| ____|
| (_) | ) || | / /_| |__ | |__
\__, |/ / | | | '_ \___ \|___ \
/ // /_ | | | (_) |__) |___) |
/_/|____||_| \___/____/|____/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 637. 311b 9ade 1f |
| 2. 4dac 83c9 3ca3 d49d 2f |
| 3. .c33 98c3 964. e598 3f |
'=== ==== ==== ==== ==== ==='
ak: .9c7 84