# on receiving block 901872 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-06-19T09:24:54Z
# as written in the block header
2025-06-19T09:24:37Z
$ uptime # since last reboot
09:24:54 up 136 days, 21:04, 0 users, load average: 1.87, 1.15, 1.23
$ battery.sh
122%, Power Supply Online
$ uname -smnr
Linux singer 6.6.37-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 1704900 kB
$ du -h -d1 .bitcoin/
11.3G .bitcoin/indexes
2.6G .bitcoin/signet
3.4M .bitcoin/wallets
97.8G .bitcoin/blocks
10.8G .bitcoin/chainstate
122.5G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 837.2G 73.3G 92% /
$ bitcoind -version
Bitcoin Core daemon version v29.99.0-b613a35eab4a
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
901872
$ BH=$(bitcoin-cli getblockhash 901872); echo $BH
000000000000000000010b84608693dae9ca078ce3cf6dd9ab6828502482ecd5
$ bitcoin-cli getblockheader 000000000000000000010b84608693dae9ca078ce3cf6dd9ab6828502482ecd5
{
"hash": "000000000000000000010b84608693dae9ca078ce3cf6dd9ab6828502482ecd5",
"confirmations": 1,
"height": 901872,
"version": 724852736,
"versionHex": "2b346000",
"merkleroot": "42038f457f3aba3c958d882625ade86eaf3d279d6c8f590fa76a1a5ccfc34ffa",
"time": 1750325077,
"mediantime": 1750318155,
"nonce": 949710165,
"bits": "17023a04",
"target": "000000000000000000023a040000000000000000000000000000000000000000",
"difficulty": 126411437451912.2,
"chainwork": "0000000000000000000000000000000000000000cc06fc99cbb6539f853cb3ac",
"nTx": 3365,
"previousblockhash": "00000000000000000001959970b814ebbed6c2f11a02715a2b7182e9dfcbde6f"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 .b84 6.86 93da
e9ca .78c e3cf 6dd9
ab68 285. 2482 ecd5
$ : 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
901872 sf: ...1 .b84 6.86 .78c 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 .
901872 sk: ecd5 74
$ : 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 .
901872 ak: d3e6 74
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 11117,
"bytes": 5992993,
"usage": 29470160,
"total_fee": 0.09320613,
"maxmempool": 300000000,
"mempoolminfee": 0.00001000,
"minrelaytxfee": 0.00001000,
"incrementalrelayfee": 0.00001000,
"unbroadcastcount": 0,
"fullrbf": true
}
$ gmm.sh
1553
## Current epoch estimation is -1.31%
## 720 of 2016, i.e. 35%, 1296 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
8.928150730989332e+20
$ bitcoin-cli getnetworkhashps 2016 901151
9.04687914735697e+20
$ bitcoin-cli getnetworkhashps 2016 899135
9.088485232729964e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 901872,
"bestblock": "000000000000000000010b84608693dae9ca078ce3cf6dd9ab6828502482ecd5",
"txouts": 168637100,
"bogosize": 13209127222,
"muhash": "8cde42eb8dd3b8b7ac2c4be729afc275978f495d47e708dcc677df13ee5507a1",
"total_amount": 19880632.08337771,
"total_unspendable_amount": 221.04162229,
"block_info": {
"prevout_spent": 3580.61035624,
"coinbase": 3.16315743,
"new_outputs_ex_coinbase": 3580.57218789,
"unspendable": 0.00001092,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00001092,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 901872
{
"avgfee": 1134,
"avgfeerate": 3,
"avgtxsize": 502,
"blockhash": "000000000000000000010b84608693dae9ca078ce3cf6dd9ab6828502482ecd5",
"feerate_percentiles": [
2,
3,
3,
3,
5
],
"height": 901872,
"ins": 8566,
"maxfee": 87990,
"maxfeerate": 100,
"maxtxsize": 63034,
"medianfee": 558,
"mediantime": 1750318155,
"mediantxsize": 253,
"minfee": 121,
"minfeerate": 1,
"mintxsize": 150,
"outs": 8890,
"subsidy": 312500000,
"swtotal_size": 1614923,
"swtotal_weight": 3694676,
"swtxs": 3131,
"time": 1750325077,
"total_out": 358057219881,
"total_size": 1689198,
"total_weight": 3991776,
"totalfee": 3815743,
"txs": 3365,
"utxo_increase": 324,
"utxo_size_inc": 31149,
"utxo_increase_actual": 144,
"utxo_size_inc_actual": 15820
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 2752666174,
"totalbytessent": 5908473821,
"timemillis": 1750325095073,
"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-b613a35eab4a - server 70016/Satoshi:29.99.0/
ipv4 npr total block libre
in 21 2 23
out 14 0 14 2 4
total 35 2 37
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 62683,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 62683
}
}
$ halving.sh 901872
=====================================
Bitcoin Block Halving prediction
=====================================
bc=901872
gbt=1231006505
bbt=1750325077
This is average time to mine a block
(1750325077-1231006505)/901872
bts=575.8222853993855010627882
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Thu Mar 2 14:34:40 UTC 2028
-------------------------------------
Next palindrome will be 902209
predicted to happen at this time:
Sat Jun 21 15:18:49 UTC 2025
-------------------------------------
Current mining epoch number is 447.
The next fortnight happens in block
903168 and probably around this time:
Sat Jun 28 00:42:22 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
16 "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
bd64f6c8919dd45c
2acac5e9a18b164002a2e1f7c1c1463cf31cf12fd511adc8c0ac7175533d920e
078d8dcbe3bfcbe2
b2c50d25d309c868a1927e5a35bef8194dec6127a5d77f783ce5461bb40bfb3c
0cf28f8d33c10e9d
dad9a7bf07a76ef78079c8e7ce2257559fb5d245d9c28dca87474b7179eed585
01491ee7b26368ed
f72f5a590a0f534a7ce4d222743d2f1305e34b78f30a8ca930441906eba90770
2f59cc5c721b04b5
299405f20c22161319310a68989ce101790899b0a5583e9926911f68d75d3201
93f4927388f970c6
387908771f268946d28c8eb2ce4250bc5c4b39f44adda09982dc07efc3e5fc3a
43e973c34fe39234
302856f89cbc556f6733186feb738bee01c280798f54898464455c6e1271ee37
9bdcc5b2b475587c
6078cd142ac149da48f0eea07ed94388a0b609876b0f15a91f96e77b726b0db5
96a5c538c60619ef
a04a980f930df8f8ea394fb53ddf7f9c0809ec56496be401baa0ecfebc867916
952c29ffb60124fb
d5837610aba8fcd151a29b379714c5865c487bac7ecbb17ebcfa9767f5d9686a
be1f2f4ccd6c4e97
69cbd923f0c663642939a00e0ef05271b88419eea122b6373f524fe81290f6b4
524a03cbf24b1585
894bf4b350620af3659ef3100a28bda6ea90cd6aa6211cb7c003891947e0f5e1
e7bb3d482e5189fd
ff3a8f2a6ea40455e438c64131775f34389b7d35fee9bdff0f47439f1559fc82
83af1f551cb4556e
2c8650ca3fee0a5acc170632a6217a5da21ff468e0680b0bc45e1a01085d7c64
76acde81ddf5a702
5640847e10280f842b1b75d8449342bd48792c9daa431d4b5ad6ccf49bc0fa53
41c5e6df602a86eb
b7946c0116f003b3bbf76c03b3abd6471955bfc820a92ea5ff4e7f9eecf2945f
$ niceblack.sh $BH $BC
##### ### #
# # # # ##
# # # # # #
###### # # #
# # # #
# # # # #
##### ### #####
##### ####### #####
# # # # # #
# # # #
##### # #####
# # # #
##### # #######
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. ...1 .b84 6.86 93da 1f |
| 2. e9ca .78c e3cf 6dd9 2f |
| 3. ab68 285. 2482 ecd5 3f |
'=== ==== ==== ==== ==== ==='
ak: d3e6 74