# on receiving block 904217 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-07-06T01:15:24Z
# as written in the block header
2025-07-06T01:15:12Z
$ uptime # since last reboot
01:15:24 up 153 days, 12:55, 0 users, load average: 0.94, 1.76, 1.88
$ battery.sh
140%, Power Supply Online
$ uname -smnr
Linux singer 6.6.37-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1525828 kB
$ du -h -d1 .bitcoin/
11.3G .bitcoin/indexes
2.8G .bitcoin/signet
3.8M .bitcoin/wallets
97.7G .bitcoin/blocks
10.8G .bitcoin/chainstate
122.6G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 837.4G 73.0G 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
904217
$ BH=$(bitcoin-cli getblockhash 904217); echo $BH
000000000000000000001b889f9f6360c67d1223b8d1596eb519b5baf63b827a
$ bitcoin-cli getblockheader 000000000000000000001b889f9f6360c67d1223b8d1596eb519b5baf63b827a
{
"hash": "000000000000000000001b889f9f6360c67d1223b8d1596eb519b5baf63b827a",
"confirmations": 1,
"height": 904217,
"version": 701456384,
"versionHex": "29cf6000",
"merkleroot": "160b32f5c2376483904b5a88be5e85590276e3227f3d64097bf048bc6813e8f4",
"time": 1751764512,
"mediantime": 1751762395,
"nonce": 2153347592,
"bits": "17026816",
"target": "0000000000000000000268160000000000000000000000000000000000000000",
"difficulty": 116958512019762.1,
"chainwork": "0000000000000000000000000000000000000000d000e338950d5ba97e63128c",
"nTx": 4125,
"previousblockhash": "0000000000000000000148f11d79fde16697452ed1679fa92837eabf01d55e77"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
.... 1b88 9f9f 636.
c67d 1223 b8d1 596e
b519 b5ba f63b 827a
$ : 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
904217 sf: 636. 827a
$ : 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 .
904217 sk: 827a a5
$ : 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 .
904217 ak: a674 a5
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 49592,
"bytes": 15898496,
"usage": 103064400,
"total_fee": 0.09749913,
"maxmempool": 300000000,
"mempoolminfee": 0.00000100,
"minrelaytxfee": 0.00000100,
"incrementalrelayfee": 0.00000100,
"unbroadcastcount": 0,
"fullrbf": true
}
$ gmm.sh
613
## Current epoch estimation is +0.81%
## 1049 of 2016, i.e. 52%, 967 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
8.43492544585105e+20
$ bitcoin-cli getnetworkhashps 2016 903167
8.366861911869141e+20
$ bitcoin-cli getnetworkhashps 2016 901151
9.04687914735697e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 904217,
"bestblock": "000000000000000000001b889f9f6360c67d1223b8d1596eb519b5baf63b827a",
"txouts": 167398498,
"bogosize": 13115126481,
"muhash": "232d7b6ce0e1a266605bcfe0f034372ed4269c922e2d375cc57a8c3c09fd66d2",
"total_amount": 19887960.20454165,
"total_unspendable_amount": 221.04545835,
"block_info": {
"prevout_spent": 544.57572670,
"coinbase": 3.14425182,
"new_outputs_ex_coinbase": 544.55647488,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 904217
{
"avgfee": 466,
"avgfeerate": 1,
"avgtxsize": 400,
"blockhash": "000000000000000000001b889f9f6360c67d1223b8d1596eb519b5baf63b827a",
"feerate_percentiles": [
1,
1,
1,
2,
2
],
"height": 904217,
"ins": 6049,
"maxfee": 132541,
"maxfeerate": 92,
"maxtxsize": 73778,
"medianfee": 234,
"mediantime": 1751762395,
"mediantxsize": 354,
"minfee": 62,
"minfeerate": 0,
"mintxsize": 150,
"outs": 12304,
"subsidy": 312500000,
"swtotal_size": 1506222,
"swtotal_weight": 3411030,
"swtxs": 4030,
"time": 1751764512,
"total_out": 54455647488,
"total_size": 1651463,
"total_weight": 3991994,
"totalfee": 1925182,
"txs": 4125,
"utxo_increase": 6255,
"utxo_size_inc": 406971,
"utxo_increase_actual": 3176,
"utxo_size_inc_actual": 229147
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 5162918504,
"totalbytessent": 10762593008,
"timemillis": 1751764524809,
"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 904217
=====================================
Bitcoin Block Halving prediction
=====================================
bc=904217
gbt=1231006505
bbt=1751764512
This is average time to mine a block
(1751764512-1231006505)/904217
bts=575.9208586867326242123027
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Fri Mar 3 19:19:42 UTC 2028
-------------------------------------
Next palindrome will be 904409
predicted to happen at this time:
Mon Jul 7 07:58:08 UTC 2025
-------------------------------------
Current mining epoch number is 448.
The next fortnight happens in block
905184 and probably around this time:
Sat Jul 12 11:57:07 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
18 "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
162f5844194149fc
0d76369bdba989e1cda77daf76954cdd40f9c1e64a8a9a171d6a33a5157c8b72
$ niceblack.sh $BH $BC
| | |
_ \ | _ \ _| | /
_.__/_|\___/\__|_\_\
_ \ \ | |_ )_ |__ /
\_ /( |__ _| / | /
_/\__/ _|___| _| _/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. .... 1b88 9f9f 636. 1f |
| 2. c67d 1223 b8d1 596e 2f |
| 3. b519 b5ba f63b 827a 3f |
'=== ==== ==== ==== ==== ==='
ak: a674 a5