# on receiving block 304527 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-05-15T21:21:19Z
# as written in the block header
2026-05-15T21:21:19Z

$ uptime   # since last reboot
 21:21:19 up 57 days, 12:14,  0 users,  load average: 1.85, 1.84, 2.00

$ battery.sh
163%, Power Supply Online

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

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1483836 kB

$ du -h -d1 .bitcoin/signet
296M	.bitcoin/signet/indexes
21M	.bitcoin/signet/wallets
451M	.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
304527

$ BH=$(bitcoin-cli -signet getblockhash 304527); echo $BH
0000000a2e8f0786f2b9400a8c5c6a1108448a91f95f6f9f758676957d8b9eaf

$ bitcoin-cli -signet getblockheader 0000000a2e8f0786f2b9400a8c5c6a1108448a91f95f6f9f758676957d8b9eaf
{
  "hash": "0000000a2e8f0786f2b9400a8c5c6a1108448a91f95f6f9f758676957d8b9eaf",
  "confirmations": 1,
  "height": 304527,
  "version": 536870912,
  "versionHex": "20000000",
  "merkleroot": "2aa56d0149a09fbad06b169ad00b4c1018908596bf3486e746974b9a0e20e152",
  "time": 1778880079,
  "mediantime": 1778877437,
  "nonce": 930780,
  "bits": "1d15102a",
  "target": "00000015102a0000000000000000000000000000000000000000000000000000",
  "difficulty": 0.04747557581386184,
  "chainwork": "00000000000000000000000000000000000000000000000000000d6244df2f00",
  "nTx": 42,
  "previousblockhash": "00000006f4967e4d25580f25426d9ab9125718c5d467d3cfd3d14785747a99e8"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... ...a 2e8f .786
f2b9 4..a 8c5c 6a11
.844 8a91 f95f 6f9f
7586 7695 7d8b 9eaf

$ : 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
304527 sf: ...a .786 4..a .844 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 .
304527 sk: 9eaf 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 .
304527 ak: 89df b1

$ : Following is the jointkode
304527 jk: 9eaf 89df b1

### niceblack moved to the end

$ bitcoin-cli -signet getmempoolinfo
{
  "loaded": true,
  "size": 1,
  "bytes": 118,
  "usage": 24360,
  "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
224

## Current epoch estimation is +0.54%
## 111 of 2016, i.e. 5%, 1905 to go
## Current and previous two in numbers:
$ bitcoin-cli -signet getnetworkhashps 2016
341427.5743640034
$ bitcoin-cli -signet getnetworkhashps 2016 304415
339567.6604445974
$ bitcoin-cli -signet getnetworkhashps 2016 302399
342474.190435588

$ bitcoin-cli -signet getblockstats 304527
{
  "avgfee": 264061,
  "avgfeerate": 975,
  "avgtxsize": 383,
  "blockhash": "0000000a2e8f0786f2b9400a8c5c6a1108448a91f95f6f9f758676957d8b9eaf",
  "feerate_percentiles": [
    0,
    0,
    0,
    1,
    5
  ],
  "height": 304527,
  "ins": 72,
  "maxfee": 10810564,
  "maxfeerate": 65320,
  "maxtxsize": 2817,
  "medianfee": 14,
  "mediantime": 1778877437,
  "mediantxsize": 191,
  "minfee": 14,
  "minfeerate": 0,
  "mintxsize": 190,
  "outs": 139,
  "subsidy": 2500000000,
  "swtotal_size": 15507,
  "swtotal_weight": 43578,
  "swtxs": 40,
  "time": 1778880079,
  "total_out": 3103141021802,
  "total_size": 15707,
  "total_weight": 44378,
  "totalfee": 10826513,
  "txs": 42,
  "utxo_increase": 67,
  "utxo_size_inc": 6269,
  "utxo_increase_actual": 29,
  "utxo_size_inc_actual": 2148
}

$ bitcoin-cli -signet getnettotals
{
  "totalbytesrecv": 296031617,
  "totalbytessent": 7661867022,
  "timemillis": 1778880080323,
  "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          9       9
out        11      11       2       1
total      20      20

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

Local addresses: n/a


$ bitcoin-cli -signet -addrinfo
{
  "addresses_known": {
    "ipv4": 1020,
    "ipv6": 0,
    "onion": 0,
    "i2p": 0,
    "cjdns": 0,
    "total": 1020
  }
}

### 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
	be10f9fe00a0a33fad40d9d4824cb308bb9dfd771b14e13c9ed63291ded4e054
58cf5f4588d41478
	6a708bd4b333800eb2e587edc870b68c062a06837d5337bd56e26d4c40ed948e
a5ca79adcadc71df
	905a408f1f0d2ee01f051e42b641284f256b9c5204d89bd67aa0fd93a04b68da
531d9e5471001a55
	b5ed87458425678d54d732ce65410848832fe4ca8b17eb6e892c85a3ff7ffd77
7985d4e63c59dc4d
	d79da79712602bab1275862a8d76e1aaae22f490ce2c9edd88b6e306e74f8b7d
f2734dfe2ce64686
	c368a2861d33949f2178382a7478b85e30e9d725c9d6c0b222d88cb6ee3801bc
57faa3297ecbe82d
	14dbd53ae5d5f95d288a3b4b792ab9b381b82b8298d7721e10dad47495b3ab99
9550b66c9c9a91e5
	f12fbed2deac06918e376b9b633441ef5aef2403c3a048bd595bdfa9e82f929d
79fc388c2941734e
	39fb3510fd10f9c81142da3523617f1e25c5bcba650d24d032697feb5e8b5973
4b4cd050a957bd80
	90f00cc786fd5e680b30c952033cb7a6bb39093892e6e2aeeffa41ded5a27439
df8487f8aee65ee1
	4cc404b10c697c42a7e76c94609ea36afd6709c716073c74cd2d30310046ecba
776a9fd72a44bc6a
	15535240198200f241dac20b38f629126d71ef1be7ec67c1763e27a9d67f55a7
e97e88689f62c1d3
	2d215d6c475145e5a4c01634821b063dcad2c1768c5ab9cd3b63f41a1f03d12b
904e359a65a998c0
	a39365f9e9bf8d0b047e1ea9dcb78b91508967ca786e0b5dac4c798b94be9102
a0ebde344ffe0d50
	4a99bacb9a792641c5d24998b32efc0e7a95554d37232f1fd2cc2836a0c2dc82


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

     ___   __        ____ _______
    /   \ /  \ |  | |    /  )   /
      __/|    ||__|_|___   /   / 
        \|    |   |     \ /   /  
    \___/ \__/    | \___//___/   

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... ...a 2e8f .786   .f |
  | 1.   f2b9 4..a 8c5c 6a11   1f |
  | 2.   .844 8a91 f95f 6f9f   2f |
  | 3.   7586 7695 7d8b 9eaf   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   9eaf 89df b1