# on receiving block 897266 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-05-18T14:46:53Z
# as written in the block header
2025-05-18T14:46:25Z
$ uptime # since last reboot
14:46:53 up 105 days, 2:26, 0 users, load average: 1.53, 1.25, 1.42
$ battery.sh
123%, Power Supply Online
$ uname -smnr
Linux singer 6.6.37-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1800108 kB
$ du -h -d1 .bitcoin/
11.2G .bitcoin/indexes
2.0G .bitcoin/signet
3.4M .bitcoin/wallets
97.7G .bitcoin/blocks
11.0G .bitcoin/chainstate
121.8G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 836.5G 73.9G 92% /
$ bitcoind -version
Bitcoin Core daemon version v29.99.0-92b05c17b147
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/licenses/MIT>
$ BC=$(bitcoin-cli getblockcount); echo $BC
897266
$ BH=$(bitcoin-cli getblockhash 897266); echo $BH
00000000000000000000664e209680227797f560cf2e5cfdce773dab998a82a2
$ bitcoin-cli getblockheader 00000000000000000000664e209680227797f560cf2e5cfdce773dab998a82a2
{
"hash": "00000000000000000000664e209680227797f560cf2e5cfdce773dab998a82a2",
"confirmations": 1,
"height": 897266,
"version": 583671808,
"versionHex": "22ca2000",
"merkleroot": "352197b8fede45eee9ad05d2faf0bf0998e6a05e07237de2157ae12fcbcf7405",
"time": 1747579585,
"mediantime": 1747576853,
"nonce": 3469974565,
"bits": "17025049",
"target": "0000000000000000000250490000000000000000000000000000000000000000",
"difficulty": 121658450774825,
"chainwork": "0000000000000000000000000000000000000000c40ddb066a0cb137f3e05451",
"nTx": 3254,
"previousblockhash": "00000000000000000000f1d73cebd9bffd986bae30d3fcc1540a2b3c3f7e4b0c"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
.... 664e 2.96 8.22
7797 f56. cf2e 5cfd
ce77 3dab 998a 82a2
$ : 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
897266 sf: 2.96 8.22 f56. 82a2
$ : 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 .
897266 sk: 82a2 85
$ : 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 .
897266 ak: 3f2a 85
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 30529,
"bytes": 12125818,
"usage": 57312976,
"total_fee": 0.22471809,
"maxmempool": 300000000,
"mempoolminfee": 0.00001000,
"minrelaytxfee": 0.00001000,
"incrementalrelayfee": 0.00001000,
"unbroadcastcount": 0,
"fullrbf": true
}
$ gmm.sh
1851
## Current epoch estimation is +0.17%
## 146 of 2016, i.e. 7%, 1870 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
8.719929006508528e+20
$ bitcoin-cli getnetworkhashps 2016 897119
8.704557915859883e+20
$ bitcoin-cli getnetworkhashps 2016 895103
8.524479268489561e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 897266,
"bestblock": "00000000000000000000664e209680227797f560cf2e5cfdce773dab998a82a2",
"txouts": 171394761,
"bogosize": 13417614859,
"muhash": "cfeec88a9bfbe44b932dacba56bf9f53eba8c62e9b8b685f23d35e94a6becf07",
"total_amount": 19866238.34933357,
"total_unspendable_amount": 221.02566643,
"block_info": {
"prevout_spent": 4735.78272011,
"coinbase": 3.19224006,
"new_outputs_ex_coinbase": 4735.71548005,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 897266
{
"avgfee": 2067,
"avgfeerate": 6,
"avgtxsize": 439,
"blockhash": "00000000000000000000664e209680227797f560cf2e5cfdce773dab998a82a2",
"feerate_percentiles": [
4,
4,
4,
5,
9
],
"height": 897266,
"ins": 7154,
"maxfee": 253892,
"maxfeerate": 301,
"maxtxsize": 13997,
"medianfee": 804,
"mediantime": 1747576853,
"mediantxsize": 225,
"minfee": 100,
"minfeerate": 1,
"mintxsize": 150,
"outs": 9397,
"subsidy": 312500000,
"swtotal_size": 1156084,
"swtotal_weight": 2891824,
"swtxs": 2952,
"time": 1747579585,
"total_out": 473571548005,
"total_size": 1431056,
"total_weight": 3991712,
"totalfee": 6724006,
"txs": 3254,
"utxo_increase": 2243,
"utxo_size_inc": 165502,
"utxo_increase_actual": 1964,
"utxo_size_inc_actual": 142220
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 1029437870,
"totalbytessent": 2457565574,
"timemillis": 1747579614457,
"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 v29.99.0-92b05c17b147 - server 70016/Satoshi:29.99.0/
ipv4 npr total block
in 29 2 31
out 10 0 10 2
total 39 2 41
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 63130,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 63130
}
}
$ halving.sh 897266
=====================================
Bitcoin Block Halving prediction
=====================================
bc=897266
gbt=1231006505
bbt=1747579585
This is average time to mine a block
(1747579585-1231006505)/897266
bts=575.7183536227232250823890
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Wed Mar 1 08:15:52 UTC 2028
-------------------------------------
Next palindrome will be 897798
predicted to happen at this time:
Thu May 22 03:51:07 UTC 2025
-------------------------------------
Current mining epoch number is 445.
The next fortnight happens in block
899136 and probably around this time:
Sat May 31 01:49:38 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
10 "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
051ed1309233d6d4
b1ebd44295d36017d844074d02ff0db216ee3dbfca73d8ce4bddb9f3f10d0e99
20c0257705819c93
730cad47d1750a5ade24c6e40d34e214c270fbd516d5acbfbf16d5b3898926e4
7c7e28421f245218
0c24417b5cde4c77b339e5239555f51afd3cd71e3426d16aa48a25badc040bb6
f86edfd504e1b141
9ad4cd98fdc380a1b7770a7e353e85ae20c4ffccea82ef13342c80ff71f4d269
0f7cf65020fa22cb
01b2da53b6c9d077cdb65b30752a5968957e4bd0362bacf07e18f3b16fc96fd4
e8238212a61b49ad
f01741f2ed5d59f125bcdd303325bbed07ccf6ad0cdd59c51d2682e1bb96f91c
c018dcad0d639387
0a83341ef51a01c43aeb3da4eec4096d148d4c4a306ceae9998b19f6d7b60f2a
01120b4be340c418
898f6a5a7d54561168720624e3b786dd1d6262951f263b49eb6e9ea2d1482b52
3f692aed0dc9da67
0610b038b7a285f56e86ed59da703b8987b8858e34e539db75060d47901f8fae
9d6e5e1e72342b61
1700fc45cf8044bbfb1a483feca00a3cf4f4ca6a251b37b2405550b2018c080e
$ niceblack.sh $BH $BC
_|_| _|_| _|_|_|_|_|
_| _| _| _| _|
_|_| _|_|_| _|
_| _| _| _|
_|_| _|_|_| _|
_|_| _|_|_| _|_|_|
_| _| _| _|
_| _|_|_| _|_|_|
_| _| _| _| _|
_|_|_|_| _|_| _|_|
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. .... 664e 2.96 8.22 1f |
| 2. 7797 f56. cf2e 5cfd 2f |
| 3. ce77 3dab 998a 82a2 3f |
'=== ==== ==== ==== ==== ==='
ak: 3f2a 85