# on receiving block 967389 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2026-09-17T09:11:04Z
# as written in the block header
2026-09-17T09:10:43Z

$ uptime   # since last reboot
 09:11:04 up 28 days, 23:26,  0 users,  load average: 0.67, 1.38, 1.63

$ battery.sh
100%, Power Supply Online

$ uname -smnr
Linux singer 6.18.44-0-lts x86_64

$ grep ^MemAvailable /proc/meminfo
MemAvailable:    1354904 kB

$ du -h -d1 .bitcoin/
12.6G	.bitcoin/indexes
5.0G	.bitcoin/signet
88.0M	.bitcoin/wallets
97.7G	.bitcoin/blocks
18.6M	.bitcoin/regtest
10.8G	.bitcoin/chainstate
126.4G	.bitcoin/

$ df -h .
Filesystem                Size      Used Available Use% Mounted on
/dev/sda3               911.4G    435.3G    475.1G  48% /

$ bitcoind -version
Bitcoin Core daemon version v31.99.0-gdb73d162395789ca3a74d50a831f4ac30c0da4f4 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 getblockcount); echo $BC
967389

$ BH=$(bitcoin-cli getblockhash 967389); echo $BH
000000000000000000002082a38556a2d3c1120decfe58e1276348e81f146c5f

$ bitcoin-cli getblockheader 000000000000000000002082a38556a2d3c1120decfe58e1276348e81f146c5f
{
  "hash": "000000000000000000002082a38556a2d3c1120decfe58e1276348e81f146c5f",
  "confirmations": 1,
  "height": 967389,
  "version": 536911872,
  "versionHex": "2000a000",
  "merkleroot": "615f3aad5db4b5f66b41cd7c74f8d7a9af8ccbf2d16c2b512128f1d3425a782d",
  "time": 1789636243,
  "mediantime": 1789632472,
  "nonce": 16812180,
  "bits": "1702355e",
  "target": "00000000000000000002355e0000000000000000000000000000000000000000",
  "difficulty": 127450789715843.1,
  "chainwork": "0000000000000000000000000000000000000001482034baf2ad2dd96daf10a4",
  "nTx": 2116,
  "previousblockhash": "00000000000000000000d3b898a5d05525142a8a2b7f6ebeedc03dd045eb01db"
}


$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
.... 2.82 a385 56a2
d3c1 12.d ecfe 58e1
2763 48e8 1f14 6c5f

$ : 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
967389 sf: 2.82 12.d 6c5f 

$ : 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 .
967389 sk: 6c5f 95

$ : 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 .
967389 ak: bcb6 95

$ : Following is the jointkode
967389 jk: 6c5f bcb6 95

### niceblack moved to the end

$ bitcoin-cli getmempoolinfo
{
  "loaded": true,
  "size": 77068,
  "bytes": 40611464,
  "usage": 225768768,
  "total_fee": 0.07535646,
  "maxmempool": 300000000,
  "mempoolminfee": 0.00000100,
  "minrelaytxfee": 0.00000100,
  "incrementalrelayfee": 0.00000100,
  "unbroadcastcount": 83,
  "permitbaremultisig": true,
  "maxdatacarriersize": 100000,
  "limitclustercount": 64,
  "limitclustersize": 101000,
  "optimal": true
}

$ gmm.sh
185

## Current epoch estimation is +3.75%
## 1725 of 2016, i.e. 85%, 291 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
9.44470515763693e+20
$ bitcoin-cli getnetworkhashps 2016 965663
9.102936500339878e+20
$ bitcoin-cli getnetworkhashps 2016 963647
9.004776521724085e+20

$ bitcoin-cli gettxoutsetinfo muhash
{
  "height": 967389,
  "bestblock": "000000000000000000002082a38556a2d3c1120decfe58e1276348e81f146c5f",
  "txouts": 165223047,
  "bogosize": 12943103096,
  "muhash": "c00d26966eac849b080cf69b264be14e5b08e1b0e7386b21c7c1a17bb3a59503",
  "total_amount": 20085363.62933283,
  "total_unspendable_amount": 230.12066717,
  "block_info": {
    "prevout_spent": 55717.29371661,
    "coinbase": 3.15871445,
    "new_outputs_ex_coinbase": 55717.26000216,
    "unspendable": 0.00000000,
    "unspendables": {
      "genesis_block": 0.00000000,
      "bip30": 0.00000000,
      "scripts": 0.00000000,
      "unclaimed_rewards": 0.00000000
    }
  }
}

$ bitcoin-cli getblockstats 967389
{
  "avgfee": 1594,
  "avgfeerate": 3,
  "avgtxsize": 845,
  "blockhash": "000000000000000000002082a38556a2d3c1120decfe58e1276348e81f146c5f",
  "feerate_percentiles": [
    2,
    2,
    3,
    3,
    4
  ],
  "height": 967389,
  "ins": 10367,
  "maxfee": 138291,
  "maxfeerate": 120,
  "maxtxsize": 99141,
  "medianfee": 516,
  "mediantime": 1789632472,
  "mediantxsize": 223,
  "minfee": 57,
  "minfeerate": 0,
  "mintxsize": 150,
  "outs": 5323,
  "subsidy": 312500000,
  "swtotal_size": 1690380,
  "swtotal_weight": 3596316,
  "swtxs": 1986,
  "time": 1789636243,
  "total_out": 5571726000216,
  "total_size": 1789250,
  "total_weight": 3991796,
  "totalfee": 3371445,
  "txs": 2116,
  "utxo_increase": -5044,
  "utxo_size_inc": -358786,
  "utxo_increase_actual": -5260,
  "utxo_size_inc_actual": -375880
}

$ bitcoin-cli getnettotals
{
  "totalbytesrecv": 16578122798,
  "totalbytessent": 40667999059,
  "timemillis": 1789636264638,
  "uploadtarget": {
    "timeframe": 86400,
    "target": 0,
    "target_reached": false,
    "serve_historical_blocks": true,
    "bytes_left_in_cycle": 0,
    "time_left_in_cycle": 0
  }
}

$ bitcoin-cli -netinfo
Bitcoin Core client v31.99.0-gdb73d162395789ca3a74d50a831f4ac30c0da4f4 - server 70017/Satoshi:31.99.0/

         ipv4     npr   total   block
in         22       2      24
out        10       0      10       2
total      32       2      34

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

Local addresses: n/a


$ bitcoin-cli -addrinfo
{
  "addresses_known": {
    "ipv4": 78510,
    "ipv6": 306,
    "onion": 1815,
    "i2p": 6,
    "cjdns": 0,
    "total": 80637
  }
}

$ halving.sh 967389
=====================================
  Bitcoin Block Halving prediction
=====================================

bc=967389
gbt=1231006505
bbt=1789636243

This is average time to mine a block
(1789636243-1231006505)/967389
bts=577.4607324863808805135467

Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Wed Mar 22 12:27:31 UTC 2028

-------------------------------------
Next palindrome will be 967769
predicted to happen at this time:
Sat Sep 19 22:07:58 UTC 2026

-------------------------------------
Current mining epoch number is 479.
The next fortnight happens in block
967680 and probably around this time:
Sat Sep 19 07:51:24 UTC 2026

### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli getpeerinfo | grep -w 'v2' | uniq -c
     12     "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

5b67796efcc30c3a
	e6b95ac267eab33d7a0fd7febb91b7a01458c13f7cf638b6b9954defce847057
d7201869eca3629d
	8c9cf0f7fee6a6d179c6b50e980e102ad5d3f0f9ff453e956ad6287e3f881d79
e4e0241ae017d60e
	97ba5b67971b0b0b1a9b5d5f18e7766d776bbbc96729312713b9417376930a03
40942212941d88d9
	b75bc570bc14afdd298f24b1cc899c1b325cf078cb4e601c578344b927afeb4a
e0a1adad8382d9e0
	c3e1be3d4b5b1bc9891aa2017a184015a454bd1b5c2947e93ff5c1ff5fdf490e
646ebacd2d74e318
	488cad6d1e128d49f2f49128fca82047c09fade0e0cbc9a0978d2e26484ccd8e
bf320b8f136696ac
	fd9c2f189f8c9a24fd38bade3a9ce4b7d50d11043691b7c1233349d8b9cc14b2
83f6ce849ae8fe0e
	a13314c2021f6186384c5bc020ebf1c1405d1f83be68263de3f0437f2c0a8bbf
18a3696c699a75af
	d67fe964c9abe8e51e92efcca88532609d00ad86090012b5301a31e81b05d68d
1eeba50e60490dce
	0c9d10718b303f95254e01c5c1b560b76683ee408d3cd4f78b583d7dd35eee19
465d836d8778f4aa
	97f5c61f25450ae975e17c257a5fe48c1c82cb77fb716225c0fc36657408d2fd
e5cd693326252a3c
	2b75d604b9805b7b50fa0a333d243ab2f2ef5f626a9b83feff86fad8ed57eca0


$ niceblack.sh $BH $BC
            ____  __________
           / __ \/ ___/__  /
          / /_/ / __ \  / / 
          \__, / /_/ / / /  
         /____/\____/ /_/   

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

  ,----- .123 4567 89ab cdef -----,
  |                               |
  | ..   .... .... .... ....   .f |
  | 1.   .... 2.82 a385 56a2   1f |
  | 2.   d3c1 12.d ecfe 58e1   2f |
  | 3.   2763 48e8 1f14 6c5f   3f |
  '===   ==== ==== ==== ====   ==='
   jk:   6c5f bcb6 95