# on receiving block 306847 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-05-31T17:53:54Z
# as written in the block header
2026-05-31T17:53:46Z

$ uptime   # since last reboot
 17:53:54 up 73 days,  8:46,  0 users,  load average: 1.80, 2.09, 2.22

$ battery.sh
163%, Power Supply Online

$ uname -smnr
Linux singer 6.18.2-0-lts x86_64

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1441388 kB

$ du -h -d1 .bitcoin/signet
300M	.bitcoin/signet/indexes
21M	.bitcoin/signet/wallets
468M	.bitcoin/signet/blocks
3.7G	.bitcoin/signet/chainstate
4.5G	.bitcoin/signet

$ df -h .
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       912G  435G  476G  48% /

$ bitcoind -version
Bitcoin Core daemon version v31.0.0rc4 bitcoind
Copyright (C) 2009-2026 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 -signet getblockcount); echo $BC
306847

$ BH=$(bitcoin-cli -signet getblockhash 306847); echo $BH
0000000aebb9d6d914b00d193cc9aceccc05510dc5267fdf460b7e14d3f1e486

$ bitcoin-cli -signet getblockheader 0000000aebb9d6d914b00d193cc9aceccc05510dc5267fdf460b7e14d3f1e486
{
  "hash": "0000000aebb9d6d914b00d193cc9aceccc05510dc5267fdf460b7e14d3f1e486",
  "confirmations": 1,
  "height": 306847,
  "version": 536870912,
  "versionHex": "20000000",
  "merkleroot": "ab8f4965bccf6ad8eefb81cbe998f9bf39971db3505784b2fb0aa904a009754d",
  "time": 1780250026,
  "mediantime": 1780244237,
  "nonce": 66330014,
  "bits": "1d1490f5",
  "target": "0000001490f50000000000000000000000000000000000000000000000000000",
  "difficulty": 0.04862263684784939,
  "chainwork": "00000000000000000000000000000000000000000000000000000dd0e427bbe0",
  "nTx": 344,
  "previousblockhash": "0000000b4ede3b1d3e32dc0ecbc1aba752caf60006cdab9bb693a63eee13b886"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... ...a ebb9 d6d9
14b. .d19 3cc9 acec
cc.5 51.d c526 7fdf
46.b 7e14 d3f1 e486

$ : 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
306847 sf: ...a 14b. .d19 cc.5 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 .
306847 sk: e486 91

$ : 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 .
306847 ak: 9c7f 91

$ : Following is the jointkode
306847 jk: e486 9c7f 91

### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 1,
  "bytes": 142,
  "usage": 53928,
  "total_fee": 0.00000480,
  "maxmempool": 300000000,
  "mempoolminfee": 0.00000100,
  "minrelaytxfee": 0.00000100,
  "incrementalrelayfee": 0.00000100,
  "unbroadcastcount": 1,
  "fullrbf": true,
  "permitbaremultisig": true,
  "maxdatacarriersize": 100000,
  "limitclustercount": 25,
  "limitclustersize": 101000,
  "optimal": true
}

$ gmm.sh
239

## Current epoch estimation is -0.3%
## 415 of 2016, i.e. 20%, 1601 to go
## Current and previous two in numbers:
$ bitcoin-cli -signet getnetworkhashps 2016
346904.539938954
$ bitcoin-cli -signet getnetworkhashps 2016 306431
347971.3775737199
$ bitcoin-cli -signet getnetworkhashps 2016 304415
339567.6604445974

$ bitcoin-cli -signet getblockstats 306847
{
  "avgfee": 4511,
  "avgfeerate": 10,
  "avgtxsize": 583,
  "blockhash": "0000000aebb9d6d914b00d193cc9aceccc05510dc5267fdf460b7e14d3f1e486",
  "feerate_percentiles": [
    1,
    1,
    1,
    2,
    2
  ],
  "height": 306847,
  "ins": 616,
  "maxfee": 1274453,
  "maxfeerate": 7700,
  "maxtxsize": 62904,
  "medianfee": 154,
  "mediantime": 1780244237,
  "mediantxsize": 205,
  "minfee": 14,
  "minfeerate": 0,
  "mintxsize": 142,
  "outs": 2798,
  "subsidy": 2500000000,
  "swtotal_size": 200109,
  "swtotal_weight": 612507,
  "swtxs": 342,
  "time": 1780250026,
  "total_out": 3097636984804,
  "total_size": 200251,
  "total_weight": 613075,
  "totalfee": 1547576,
  "txs": 344,
  "utxo_increase": 2182,
  "utxo_size_inc": 173001,
  "utxo_increase_actual": 2092,
  "utxo_size_inc_actual": 165684
}

$ bitcoin-cli -signet getnettotals
{
  "totalbytesrecv": 589549157,
  "totalbytessent": 16432383139,
  "timemillis": 1780250035551,
  "uploadtarget": {
    "timeframe": 86400,
    "target": 0,
    "target_reached": false,
    "serve_historical_blocks": true,
    "bytes_left_in_cycle": 0,
    "time_left_in_cycle": 0
  }
}

$ bitcoin-cli -signet -netinfo
Bitcoin Core client v31.0.0rc4 signet - server 70016/Satoshi:31.0.0/

         ipv4   total   block  manual
in         12      12
out        11      11       2       1
total      23      23

Local services: witness, compact filters, network limited, p2p v2

Local addresses: n/a


$ bitcoin-cli -signet -addrinfo
{
  "addresses_known": {
    "ipv4": 1105,
    "ipv6": 0,
    "onion": 0,
    "i2p": 0,
    "cjdns": 0,
    "total": 1105
  }
}

### v2_peerinfo are in v2_peerinfo-signet.txt
$ bitcoin-cli -signet 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

82b27e77426c9cf3
	29a6f4ac6aa43f08af35547819922f5e967641a9d65a94b494c82ac26a695a07
39235a0b1d5527e7
	95922c68c22a20fed80df23cd85406c5a305e424c854cbb07950ad67f3190702
a9e407828463a7f3
	fda7c5b3505bee36b3a9c66e49ccadaa96d5e2dfc7c3d2f019a54ee4c3bdeba5
c2df4db43254cb32
	dca64f72c53dc18778ffb7cdd3dcad00519b68f53dab670373ab683c43de0ae1
6314f8c19fd3f1fc
	a787db2d728fe91dc7a58a44c1654f94bcf49fdb219f80d6ffc69a6cfc3c3274
1be57ab10ba0682c
	2e7a5cfacffd322fde6ba6dd6a7460bb55d99cda26883b8be36df302a0034eeb
1b223199413e44c3
	e69d68281ac73a3c888eabde7e492e2916778acace73bc294cc774c447872155
563b8894485c6787
	7727fcfa14ca9b0be638f5d0a50fcaea847be7ac54f5cddd9c794609712e57e4
84ec145dd309a0af
	636daac2724b598123f00ba233883e8beb44a26e5904638f23487a0bcd5c749a
f3367d6752fbb126
	63a888478434373d773c200615820142394bf0c3fc6d813769ecf82601b9c87d
f0f694d1aa80196f
	aa07305ac61937391c69072ef209bbe04f49e987989c0963742a74196240dc63
58b4cd8e45f469e4
	dfbebb3fb7831b43c48dd6eaf5586f9ae52039fe41b4f6e4f4f994cf84d0791f
842af9b4332a84d4
	9d17f76be6f677edc5ac66990ce5be43592751f321f31cc787f60c4bc85532d8
7116bc61a79199c9
	b75b921ea0d58dc3daf286a3af2dc71fa9a7752a8413ef067034fa547425e2f9
b0f29267fad00ff5
	43ee8b431933db922b39e237dd0590daccb0a268eb821df40f1c8293cb852673
aeb17eb3af0fc6f5
	4fba6409716bab1b06591dab1b6f40947fab95fab1db0b2d2c5cd15a7deeae69
fcc9499522c3c622
	b88a35642b8e9da9bae5709615d82162553c43f3976425edae345c30586bc863
b0d884c7c6af050b
	ea430a93a175feff7bad10b4861665ec557cd06f500bbb80e9f78997fc91397d
c2d7bb05d2437965
	4026cd4f293967da56e3536216b62e396ec2323282ca0bab15f87a51245c0fa7
0f99dc8a3918b2c2
	582c864c8a588ac612e16d7642eab688762c3aa3fc02807803ad0eafc636a013
877cb6e825250063
	d0027a22f6c2f7bc0abec84413369c770be38f28e4878b7bbe4abde5a579c0e1


$ niceblack.sh $BH $BC
          ____   ___    __  
         |___ \ / _ \  / /  
           __) | | | |/ /_  
          |__ <| | | | '_ \ 
          ___) | |_| | (_) |
         |____/ \___/ \___/ 

           ___  _  _ ______ 
          / _ \| || |____  |
         | (_) | || |_  / / 
          > _ <|__   _|/ /  
         | (_) |  | | / /   
          \___/   |_|/_/    

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... ...a ebb9 d6d9   .f |
  | 1.   14b. .d19 3cc9 acec   1f |
  | 2.   cc.5 51.d c526 7fdf   2f |
  | 3.   46.b 7e14 d3f1 e486   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   e486 9c7f 91