# on receiving block 312385 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-07-09T05:08:16Z
# as written in the block header
2026-07-09T05:07:43Z

$ uptime   # since last reboot
 05:08:16 up 12 days, 21:39,  0 users,  load average: 3.13, 2.63, 1.51

$ battery.sh
100%, Power Supply Online

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

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1698668 kB

$ du -h -d1 .bitcoin/signet
308M	.bitcoin/signet/indexes
21M	.bitcoin/signet/wallets
566M	.bitcoin/signet/blocks
3.9G	.bitcoin/signet/chainstate
4.8G	.bitcoin/signet

$ df -h .
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda3       912G  436G  476G  48% /

$ bitcoind -version
Bitcoin Core daemon version v31.1.0rc1 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
312385

$ BH=$(bitcoin-cli -signet getblockhash 312385); echo $BH
0000000b48fcefd010c18f776428d01a2cdb0d3ce53db1f8ea0d8a80a4419c8a

$ bitcoin-cli -signet getblockheader 0000000b48fcefd010c18f776428d01a2cdb0d3ce53db1f8ea0d8a80a4419c8a
{
  "hash": "0000000b48fcefd010c18f776428d01a2cdb0d3ce53db1f8ea0d8a80a4419c8a",
  "confirmations": 1,
  "height": 312385,
  "version": 536870912,
  "versionHex": "20000000",
  "merkleroot": "d6bfe1204b940aed7196dbd9b8a355ac66128d2b3ce376cb5740546d92a24a53",
  "time": 1783573663,
  "mediantime": 1783570569,
  "nonce": 49608346,
  "bits": "1d1539c3",
  "target": "0000001539c30000000000000000000000000000000000000000000000000000",
  "difficulty": 0.04711213096935177,
  "chainwork": "00000000000000000000000000000000000000000000000000000edbfea425aa",
  "nTx": 74,
  "previousblockhash": "0000000abbb346c895fdb3e244c4b9c4aec30de688ff3a008ac7b6e6ab9519e5"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... ...b 48fc efd.
1.c1 8f77 6428 d.1a
2cdb .d3c e53d b1f8
ea.d 8a8. a441 9c8a

$ : 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
312385 sf: ...b efd. 1.c1 d.1a 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 .
312385 sk: 9c8a 81

$ : 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 .
312385 ak: a1c7 81

$ : Following is the jointkode
312385 jk: 9c8a a1c7 81

### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 173,
  "bytes": 2337966,
  "usage": 13917208,
  "total_fee": 0.02338304,
  "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
258

## Current epoch estimation is +3.65%
## 1921 of 2016, i.e. 95%, 95 to go
## Current and previous two in numbers:
$ bitcoin-cli -signet getnetworkhashps 2016
349560.7382198908
$ bitcoin-cli -signet getnetworkhashps 2016 310463
337230.1211738132
$ bitcoin-cli -signet getnetworkhashps 2016 308447
350573.0694396333

$ bitcoin-cli -signet getblockstats 312385
{
  "avgfee": 93451,
  "avgfeerate": 28,
  "avgtxsize": 6891,
  "blockhash": "0000000b48fcefd010c18f776428d01a2cdb0d3ce53db1f8ea0d8a80a4419c8a",
  "feerate_percentiles": [
    1,
    1,
    1,
    1,
    1
  ],
  "height": 312385,
  "ins": 3281,
  "maxfee": 6031288,
  "maxfeerate": 36442,
  "maxtxsize": 29643,
  "medianfee": 475,
  "mediantime": 1783570569,
  "mediantxsize": 438,
  "minfee": 0,
  "minfeerate": 0,
  "mintxsize": 142,
  "outs": 355,
  "subsidy": 2500000000,
  "swtotal_size": 502943,
  "swtotal_weight": 950744,
  "swtxs": 72,
  "time": 1783573663,
  "total_out": 3183689533062,
  "total_size": 503085,
  "total_weight": 951312,
  "totalfee": 6821964,
  "txs": 74,
  "utxo_increase": -2926,
  "utxo_size_inc": -207972,
  "utxo_increase_actual": -2964,
  "utxo_size_inc_actual": -212796
}

$ bitcoin-cli -signet getnettotals
{
  "totalbytesrecv": 173316149,
  "totalbytessent": 6912614736,
  "timemillis": 1783573697250,
  "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 v31.1.0rc1 signet - server 70016/Satoshi:31.1.0/

         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": 892,
    "ipv6": 0,
    "onion": 0,
    "i2p": 0,
    "cjdns": 0,
    "total": 892
  }
}

### 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

02bcf475afe48ca6
	53d6cb57a43722ec0bf4189a66dd1a08513bedb3ae5ffb861f6db30605622cca
d3a35fabb60fb123
	f4f5e89ebf6e3fa51a409f0b560276d4201040c057d28751179c8a69a9461f63
6314f8c19fd3f1fc
	6c073ab1fbebc65165ae40daaeac9c44c96950f1a9ce748cb6acd1cc859117ba
a8e0ddb58abca302
	0477eb017427552802c2419194c80a7ccb5a6cfcfb1477b75ed31b2ace882d75
a4dda9c03849be5c
	9d5c340dd6ee89ca0719fd08e2eae0a83a9dbf702646a5a4904765901e9ad728
d93d2e33982b129d
	595ce1ba880d4e61a9992454812998b51512d2d819f362e09d3984891d5b0ce3
a8458145c2f0e139
	e9f63ba81dd62cf2eb13421308c9ec3201414588fcb2f0b2bb0f8cfdf6b6b2ee
a2cfcc8161593722
	4c0eae588e4b0377ec51e1cb31f3be318a23045e9757f246842877d67cd0f3f9
82b27e77426c9cf3
	039baddd4ffdac510b2d9c1aac1af503e479a74a78d482afc73dbdf457e5c373
aa9769a5973004a2
	b6d055a5b3cf3fd0bf123b5ebfc9ab489f02656b93105ac0e4ec75441af31dab
7b4566df59a7b36f
	398dafcceb5128fbd5c33ec2bfb067bea2955dff0e77a2e8a53dbd582d45a108
b1f933c1a897ba5a
	eec1a9ea65cf6f2ccf40390d6567d86b8d123558f3b411241152ffc59e755a3f
0023b28c288594d1
	f09962cb9d7cada2c57c704c940767a3112061b380e6669310fde1a928fd47d1
27aab1ff9b0fead5
	e07157bde316a7b44fe4158cb17900f810dffd690bf82a78f865a2fbd74e43ed
25609ead3dfca468
	e42e0daff89ccafe37c2ad79934e5a959f8835f9c9aa46766e42e325108ab63f
92ef63be131b43e4
	d765bb99fdd68a69d632fe7cb4fccaa7486f83644de477e1f067ecce1948b7b6
43b5d80fe00d0f47
	d021c7807cd7e6ae23cac4b0e6ae26d5a00470cddf3575984ba4ae48c925f758


$ niceblack.sh $BH $BC
         _    _         _   
        | |__| |___  __| |__
        | '_ \ / _ \/ _| / /
        |_.__/_\___/\__|_\_\

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

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... ...b 48fc efd.   .f |
  | 1.   1.c1 8f77 6428 d.1a   1f |
  | 2.   2cdb .d3c e53d b1f8   2f |
  | 3.   ea.d 8a8. a441 9c8a   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   9c8a a1c7 81