# on receiving a block here
$ date -u '+%Y-%m-%d %H:%M:%SZ'
2024-04-19 02:06:57Z
# as written in the block header
2024-04-19 02:06:20Z
$ uptime # since last reboot
02:06:56 up 170 days, 12:23, 0 users, load average: 0.38, 0.28, 0.30
$ battery.sh
78%, Power Supply Online
$ uname -snrm
Linux singer 6.1.42-0-lts #1-Alpine SMP PREEMPT_DYNAMIC Thu, 27 Jul 2023 12:27:13 +0000 x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2188080 kB
$ du -h -d1 .bitcoin/
10.1G .bitcoin/indexes
1.8G .bitcoin/signet
12.9M .bitcoin/wallets
49.0G .bitcoin/blocks
11.0G .bitcoin/chainstate
3.4G .bitcoin/testnet3
75.4G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 667.6G 242.8G 73% /
$ bitcoind --version
Bitcoin Core version v27.0
Copyright (C) 2009-2024 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
839860
$ BH=$(bitcoin-cli getblockhash 839860); echo $BH
000000000000000000011bf7e0cbea9c87dc2e3508c158a765b53032dffa7c72
$ bitcoin-cli getblockheader $BH
{
"hash": "000000000000000000011bf7e0cbea9c87dc2e3508c158a765b53032dffa7c72",
"confirmations": 1,
"height": 839860,
"version": 536985600,
"versionHex": "2001c000",
"merkleroot": "738a8e70cca7abbb9b1ed0caeba6a912dbfe8dd0706dbe4bdea741835ee64c0d",
"time": 1713492380,
"mediantime": 1713487291,
"nonce": 3369863250,
"bits": "17034219",
"difficulty": 86388558925171.02,
"chainwork": "00000000000000000000000000000000000000007510e2bb61726afab8645527",
"nTx": 2619,
"previousblockhash": "000000000000000000027bf9cdf0b90897e41b163cf95578dae929fe76145c43"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
...1 1bf7 e.cb ea9c
87dc 2e35 .8c1 58a7
65b5 3.32 dffa 7c72
$ : Following is the shortform
$ last=${BH#${BH%????}}
$ a=$(echo $BH | cut -b-60 \
| fold -w 4 \
| grep -Ev '^(0000|[^0]{4})$')
$ R=$(echo $a $last | cut -b-20)
$ printf "%s: " $BC
$ { echo $R | grep "$last$" \
|| echo $R M; } | tr "0\n" ". "
echo
839860: ...1 e.cb .8c1 3.32 M
$ : Following is the shortkode
$ last=${BH#${BH%????}}
$ nz=$(echo $BH | fold -w 4 \
| grep -cE '^[^0]{4}$')
$ z=$(echo $BH | fold -w 4 \
| grep -c '^0000$')
$ printf "%s sk: " $BC
$ printf "%s %x" $last \
$(((${nz}<<4)+${z})) \
| tr "0\n" ". "; echo
839860 sk: 7c72 84
$ niceblack.sh $BH $BC
__ __ __
/ / / /__ ____/ /__
/ _ \/ / _ \/ __/ '_/
/_.__/_/\___/\__/_/\_\
___ _______ ___ ____ ___
( _ )|_ / _ \( _ )/ __// _ \
/ _ |/_ <\_, / _ / _ \/ // /
\___/____/___/\___/\___/\___/
,--- .123 4567 89ab cdef ---,
| .. .... .... .... .... .f |
| 1. ...1 1bf7 e.cb ea9c 1f |
| 2. 87dc 2e35 .8c1 58a7 2f |
| 3. 65b5 3.32 dffa 7c72 3f |
'=== ==== ==== ==== ==== ==='
sf: ...1 e.cb .8c1 3.32 M
sk: 7c72 84
...............| ...||.||||||.|||
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 64447,
"bytes": 73434380,
"usage": 278773056,
"total_fee": 9.67272252,
"maxmempool": 300000000,
"mempoolminfee": 0.00001000,
"minrelaytxfee": 0.00001000,
"incrementalrelayfee": 0.00001000,
"unbroadcastcount": 0,
"fullrbf": true
}
# current and previous two
$ bitcoin-cli getnetworkhashps -1
6.306290064217267e+20
$ bitcoin-cli getnetworkhashps -1 838655
6.182828247491896e+20
$ bitcoin-cli getnetworkhashps -1 836639
5.948660332273082e+20
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 839860,
"bestblock": "000000000000000000011bf7e0cbea9c87dc2e3508c158a765b53032dffa7c72",
"txouts": 176434353,
"bogosize": 13537913224,
"muhash": "d25b140105b214600508b92b11d759acdbf86dd7d99f1dba6f2ba7bc66dd85c8",
"total_amount": 19686411.74273122,
"total_unspendable_amount": 219.50726878,
"block_info": {
"prevout_spent": 5581.29438145,
"coinbase": 7.08553655,
"new_outputs_ex_coinbase": 5580.45884490,
"unspendable": 0.00000000,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000000,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 40763018,
"totalbytessent": 61011547,
"timemillis": 1713492417619,
"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 v27.0 - server 70016/Satoshi:27.0.0/
ipv4 onion npr total block manual
in 50 0 5 55
out 3 8 0 11 2 1
total 53 8 5 66
Local addresses
176.112.185.89 port 8333 score 278
gifm4fnj3vua664xhgeanx5fnpco3txkqy4amr4txbfsciiyrkxpf2qd.onion port 8333 score 4
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 54298,
"ipv6": 9,
"onion": 15329,
"i2p": 0,
"cjdns": 0,
"total": 69636
}
}
$ halving.sh 839860
=====================================
Bitcoin Block Halving prediction
=====================================
bc=839860
gbt=1231006505
bbt=1713492380
This is average time to mine a block
(1713492380-1231006505)/839860
bts=574.4836937108565713333174
Now let's multiply that by 840000
which is the block number of next
halving and get the prediction:
Sat Apr 20 00:26:47 UTC 2024
-------------------------------------
Next palindrome will be 839938
predicted to happen at this time:
Fri Apr 19 14:33:09 UTC 2024
-------------------------------------
Current mining epoch number is 416.
The next fortnight happens in block
840672 and probably around this time:
Wed Apr 24 11:41:00 UTC 2024
### v2_peerinfo are in v2_peerinfo-bitcoin.txt