# on receiving block 305921 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-05-25T09:25:05Z
# as written in the block header
2026-05-25T09:25:01Z

$ uptime   # since last reboot
 09:25:05 up 67 days, 17 min,  0 users,  load average: 3.92, 3.15, 2.62

$ battery.sh
163%, Power Supply Online

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

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1529948 kB

$ du -h -d1 .bitcoin/signet
299M	.bitcoin/signet/indexes
21M	.bitcoin/signet/wallets
540M	.bitcoin/signet/blocks
3.7G	.bitcoin/signet/chainstate
4.6G	.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
305921

$ BH=$(bitcoin-cli -signet getblockhash 305921); echo $BH
00000001cbcfbdca7b2566e64ac727020c8262e44b873c7fde2ef7fa9d7bc480

$ bitcoin-cli -signet getblockheader 00000001cbcfbdca7b2566e64ac727020c8262e44b873c7fde2ef7fa9d7bc480
{
  "hash": "00000001cbcfbdca7b2566e64ac727020c8262e44b873c7fde2ef7fa9d7bc480",
  "confirmations": 1,
  "height": 305921,
  "version": 536870912,
  "versionHex": "20000000",
  "merkleroot": "cfd4f580c6f773f9402fd6b4407761b417438e24d0357d60c1f23d2f716e5389",
  "time": 1779701101,
  "mediantime": 1779699025,
  "nonce": 25883096,
  "bits": "1d15102a",
  "target": "00000015102a0000000000000000000000000000000000000000000000000000",
  "difficulty": 0.04747557581386184,
  "chainwork": "00000000000000000000000000000000000000000000000000000da473744308",
  "nTx": 35,
  "previousblockhash": "000000122f80f1d8a9d5a60500fc76ce5de2aadd2073c1c5b785318e56ac1ce6"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... ...1 cbcf bdca
7b25 66e6 4ac7 27.2
.c82 62e4 4b87 3c7f
de2e f7fa 9d7b c48.

$ : 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
305921 sf: ...1 27.2 .c82 c48. 

$ : 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 .
305921 sk: c48. b1

$ : 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 .
305921 ak: 6fb3 b1

$ : Following is the jointkode
305921 jk: c480 6fb3 b1

### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 1,
  "bytes": 142,
  "usage": 41224,
  "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
202

## Current epoch estimation is +0.67%
## 1505 of 2016, i.e. 74%, 511 to go
## Current and previous two in numbers:
$ bitcoin-cli -signet getnetworkhashps 2016
341854.182498361
$ bitcoin-cli -signet getnetworkhashps 2016 304415
339567.6604445974
$ bitcoin-cli -signet getnetworkhashps 2016 302399
342474.190435588

$ bitcoin-cli -signet getblockstats 305921
{
  "avgfee": 17781,
  "avgfeerate": 36,
  "avgtxsize": 686,
  "blockhash": "00000001cbcfbdca7b2566e64ac727020c8262e44b873c7fde2ef7fa9d7bc480",
  "feerate_percentiles": [
    0,
    0,
    0,
    3,
    9
  ],
  "height": 305921,
  "ins": 99,
  "maxfee": 562456,
  "maxfeerate": 3398,
  "maxtxsize": 7591,
  "medianfee": 14,
  "mediantime": 1779699025,
  "mediantxsize": 191,
  "minfee": 14,
  "minfeerate": 0,
  "mintxsize": 142,
  "outs": 266,
  "subsidy": 2500000000,
  "swtotal_size": 23199,
  "swtotal_weight": 66066,
  "swtxs": 33,
  "time": 1779701101,
  "total_out": 3423691788102,
  "total_size": 23341,
  "total_weight": 66634,
  "totalfee": 604554,
  "txs": 35,
  "utxo_increase": 167,
  "utxo_size_inc": 13525,
  "utxo_increase_actual": 130,
  "utxo_size_inc_actual": 9468
}

$ bitcoin-cli -signet getnettotals
{
  "totalbytesrecv": 448386025,
  "totalbytessent": 12076120842,
  "timemillis": 1779701105865,
  "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          8       8
out        11      11       2       1
total      19      19

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

Local addresses: n/a


$ bitcoin-cli -signet -addrinfo
{
  "addresses_known": {
    "ipv4": 1092,
    "ipv6": 0,
    "onion": 0,
    "i2p": 0,
    "cjdns": 0,
    "total": 1092
  }
}

### v2_peerinfo are in v2_peerinfo-signet.txt
$ bitcoin-cli -signet getpeerinfo | grep -w 'v2' | uniq -c
     17     "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
58b4cd8e45f469e4
	dfbebb3fb7831b43c48dd6eaf5586f9ae52039fe41b4f6e4f4f994cf84d0791f
842af9b4332a84d4
	9d17f76be6f677edc5ac66990ce5be43592751f321f31cc787f60c4bc85532d8
4bbbb9dcf41d18ab
	d6162b2b780697423a2c602f49f7d693fb3bc72819f4500167a683affbfd23f1


$ niceblack.sh $BH $BC

    _|_|_|      _|    _|_|_|_|  
          _|  _|  _|  _|        
      _|_|    _|  _|  _|_|_|    
          _|  _|  _|        _|  
    _|_|_|      _|    _|_|_|    

       _|_|      _|_|      _|  
     _|    _|  _|    _|  _|_|  
       _|_|_|      _|      _|  
           _|    _|        _|  
     _|_|_|    _|_|_|_|    _|  

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... ...1 cbcf bdca   .f |
  | 1.   7b25 66e6 4ac7 27.2   1f |
  | 2.   .c82 62e4 4b87 3c7f   2f |
  | 3.   de2e f7fa 9d7b c48.   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   c48. 6fb3 b1