# on receiving block 305576 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-05-23T00:13:57Z
# as written in the block header
2026-05-23T00:13:25Z

$ uptime   # since last reboot
 00:13:57 up 64 days, 15:06,  0 users,  load average: 2.05, 1.59, 1.43

$ battery.sh
163%, Power Supply Online

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

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1456272 kB

$ du -h -d1 .bitcoin/signet
297M	.bitcoin/signet/indexes
21M	.bitcoin/signet/wallets
523M	.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
305576

$ BH=$(bitcoin-cli -signet getblockhash 305576); echo $BH
0000000ec3c8d2951e51b5ce5e8bf2a681a6e7fb1556ee6e9c53e5a702b2eeb6

$ bitcoin-cli -signet getblockheader 0000000ec3c8d2951e51b5ce5e8bf2a681a6e7fb1556ee6e9c53e5a702b2eeb6
{
  "hash": "0000000ec3c8d2951e51b5ce5e8bf2a681a6e7fb1556ee6e9c53e5a702b2eeb6",
  "confirmations": 1,
  "height": 305576,
  "version": 536870912,
  "versionHex": "20000000",
  "merkleroot": "bf734af6720db1eddeda67b351f5d5b718c70165de573434bcfc479477267dab",
  "time": 1779495205,
  "mediantime": 1779490929,
  "nonce": 253500588,
  "bits": "1d15102a",
  "target": "00000015102a0000000000000000000000000000000000000000000000000000",
  "difficulty": 0.04747557581386184,
  "chainwork": "00000000000000000000000000000000000000000000000000000d941258ea84",
  "nTx": 39,
  "previousblockhash": "000000096dab5ec97e4b0f04ca242ee798e94ef6d04d6c65e46883317a85c90f"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... ...e c3c8 d295
1e51 b5ce 5e8b f2a6
81a6 e7fb 1556 ee6e
9c53 e5a7 .2b2 eeb6

$ : 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
305576 sf: ...e .2b2 eeb6 

$ : 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 .
305576 sk: eeb6 d1

$ : 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 .
305576 ak: 1e74 d1

$ : Following is the jointkode
305576 jk: eeb6 1e74 d1

### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 1,
  "bytes": 142,
  "usage": 37192,
  "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
166

## Current epoch estimation is +1.48%
## 1160 of 2016, i.e. 57%, 856 to go
## Current and previous two in numbers:
$ bitcoin-cli -signet getnetworkhashps 2016
344616.879130206
$ bitcoin-cli -signet getnetworkhashps 2016 304415
339567.6604445974
$ bitcoin-cli -signet getnetworkhashps 2016 302399
342474.190435588

$ bitcoin-cli -signet getblockstats 305576
{
  "avgfee": 41277,
  "avgfeerate": 53,
  "avgtxsize": 866,
  "blockhash": "0000000ec3c8d2951e51b5ce5e8bf2a681a6e7fb1556ee6e9c53e5a702b2eeb6",
  "feerate_percentiles": [
    0,
    0,
    0,
    0,
    0
  ],
  "height": 305576,
  "ins": 64,
  "maxfee": 1295618,
  "maxfeerate": 7828,
  "maxtxsize": 20869,
  "medianfee": 14,
  "mediantime": 1779490929,
  "mediantxsize": 191,
  "minfee": 14,
  "minfeerate": 0,
  "mintxsize": 73,
  "outs": 720,
  "subsidy": 2500000000,
  "swtotal_size": 32772,
  "swtotal_weight": 115929,
  "swtxs": 37,
  "time": 1779495205,
  "total_out": 3092379060768,
  "total_size": 32914,
  "total_weight": 116497,
  "totalfee": 1568560,
  "txs": 39,
  "utxo_increase": 656,
  "utxo_size_inc": 48587,
  "utxo_increase_actual": 618,
  "utxo_size_inc_actual": 44474
}

$ bitcoin-cli -signet getnettotals
{
  "totalbytesrecv": 410230359,
  "totalbytessent": 10627289085,
  "timemillis": 1779495237648,
  "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          6       6
out        12      12       3       1
total      18      18

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

Local addresses: n/a


$ bitcoin-cli -signet -addrinfo
{
  "addresses_known": {
    "ipv4": 1103,
    "ipv6": 0,
    "onion": 0,
    "i2p": 0,
    "cjdns": 0,
    "total": 1103
  }
}

### v2_peerinfo are in v2_peerinfo-signet.txt
$ bitcoin-cli -signet getpeerinfo | grep -w 'v2' | uniq -c
     15     "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
58cf5f4588d41478
	7bf7615f24ef55828c98274187a3a29a26c06cc14ac18b693737ad59a0fb05d8
1be57ab10ba0682c
	2e7a5cfacffd322fde6ba6dd6a7460bb55d99cda26883b8be36df302a0034eeb
82fab7a90cabd40c
	cc447826dbdd34a76324acf6c0f6abcce95a3ef3bd9a410520828303709b8651
1b223199413e44c3
	e69d68281ac73a3c888eabde7e492e2916778acace73bc294cc774c447872155
563b8894485c6787
	7727fcfa14ca9b0be638f5d0a50fcaea847be7ac54f5cddd9c794609712e57e4
84ec145dd309a0af
	636daac2724b598123f00ba233883e8beb44a26e5904638f23487a0bcd5c749a
f3367d6752fbb126
	63a888478434373d773c200615820142394bf0c3fc6d813769ecf82601b9c87d
75f1784cd2bb262b
	83a07dbd13b9c37488b3638b314a230ff42709339cc15244a5b6bf29ae72fc2f
f0f694d1aa80196f
	aa07305ac61937391c69072ef209bbe04f49e987989c0963742a74196240dc63
68a029c31fc76f37
	9031143af89ccef81dff120c46826ee3828a09c413c37fa155ee57326b5bff31


$ niceblack.sh $BH $BC
          _____  ___  ____  
         |___ / / _ \| ___| 
           |_ \| | | |___ \ 
          ___) | |_| |___) |
         |____/ \___/|____/ 

           ____ _____ __   
          | ___|___  / /_  
          |___ \  / / '_ \ 
           ___) |/ /| (_) |
          |____//_/  \___/ 

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... ...e c3c8 d295   .f |
  | 1.   1e51 b5ce 5e8b f2a6   1f |
  | 2.   81a6 e7fb 1556 ee6e   2f |
  | 3.   9c53 e5a7 .2b2 eeb6   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   eeb6 1e74 d1