# on receiving block 928556 here
$ date -u '+%Y-%m-%dT%H:%M:%SZ'
2025-12-19T12:33:47Z
# as written in the block header
2025-12-19T12:33:38Z
$ uptime # since last reboot
12:33:47 up 127 days, 22:24, 0 users, load average: 2.25, 2.18, 2.05
$ battery.sh
50%, Power Supply Online
$ uname -smnr
Linux singer 6.12.40-0-lts x86_64
$ grep ^MemAvailable /proc/meminfo
MemAvailable: 2108764 kB
$ du -h -d1 .bitcoin/
1.5G .bitcoin/testnet4
11.9G .bitcoin/indexes
3.8G .bitcoin/signet
41.8M .bitcoin/wallets
97.6G .bitcoin/blocks
18.6M .bitcoin/regtest
10.6G .bitcoin/chainstate
125.6G .bitcoin/
$ df -h .
Filesystem Size Used Available Use% Mounted on
/dev/sda3 911.4G 834.0G 76.4G 92% /
$ bitcoind -version
Bitcoin Core daemon version libre-relay-v30.0-1
Copyright (C) 2009-2025 The Bitcoin Core developers
Please contribute if you find Bitcoin Core useful. Visit
for further information about the software.
The source code is available from .
This is experimental software.
Distributed under the MIT software license, see the accompanying file COPYING
or
$ BC=$(bitcoin-cli getblockcount); echo $BC
928556
$ BH=$(bitcoin-cli getblockhash 928556); echo $BH
000000000000000000006d2c2d0fd10aad6475f2e93698cc2618d78a0668d06e
$ bitcoin-cli getblockheader 000000000000000000006d2c2d0fd10aad6475f2e93698cc2618d78a0668d06e
{
"hash": "000000000000000000006d2c2d0fd10aad6475f2e93698cc2618d78a0668d06e",
"confirmations": 1,
"height": 928556,
"version": 621436928,
"versionHex": "250a6000",
"merkleroot": "e2ae32a11e93c832b83933bd85ebe0e68b3496b6b03c20dca91e0ef921157830",
"time": 1766147618,
"mediantime": 1766146969,
"nonce": 881768858,
"bits": "1701e63a",
"target": "00000000000000000001e63a0000000000000000000000000000000000000000",
"difficulty": 148195306640204.7,
"chainwork": "0000000000000000000000000000000000000000ff4d32eb9db38dc0f4b538e7",
"nTx": 576,
"previousblockhash": "000000000000000000005b84996fb60d6b7320d663289a1043bd7fe03dba3271"
}
$ echo $BH | tr 0 . | fold -w 4 | paste -d " " - - - -
.... .... .... ....
.... 6d2c 2d.f d1.a
ad64 75f2 e936 98cc
2618 d78a .668 d.6e
$ : 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
928556 sf: 2d.f d1.a .668 d.6e
$ : 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 .
928556 sk: d.6e 75
$ : 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 .
928556 ak: 1fd1 75
### niceblack moved to the end
$ bitcoin-cli getmempoolinfo
{
"loaded": true,
"size": 35823,
"bytes": 36665417,
"usage": 198486496,
"total_fee": 0.04439068,
"maxmempool": 300000000,
"mempoolminfee": 0.00000001,
"minrelaytxfee": 0.00000001,
"incrementalrelayfee": 0.00000001,
"unbroadcastcount": 0,
"fullrbf": true,
"permitbaremultisig": true,
"maxdatacarriersize": 100000
}
$ gmm.sh
121
## Current epoch estimation is +1.42%
## 1196 of 2016, i.e. 59%, 820 to go
## Current and previous two in numbers:
$ bitcoin-cli getnetworkhashps 2016
1.075724372487494e+21
$ bitcoin-cli getnetworkhashps 2016 927359
1.060568478882824e+21
$ bitcoin-cli getnetworkhashps 2016 925343
1.068462185929668e+21
$ bitcoin-cli gettxoutsetinfo muhash
{
"height": 928556,
"bestblock": "000000000000000000006d2c2d0fd10aad6475f2e93698cc2618d78a0668d06e",
"txouts": 164730309,
"bogosize": 12911882031,
"muhash": "914d6c8492d93b7ceddb8462dfff6b13fbee428f70922f09f8f17925f48c3711",
"total_amount": 19964010.53539488,
"total_unspendable_amount": 230.08960512,
"block_info": {
"prevout_spent": 968.41942854,
"coinbase": 3.13007546,
"new_outputs_ex_coinbase": 968.41435307,
"unspendable": 0.00000001,
"unspendables": {
"genesis_block": 0.00000000,
"bip30": 0.00000000,
"scripts": 0.00000001,
"unclaimed_rewards": 0.00000000
}
}
}
$ bitcoin-cli getblockstats 928556
{
"avgfee": 882,
"avgfeerate": 2,
"avgtxsize": 509,
"blockhash": "000000000000000000006d2c2d0fd10aad6475f2e93698cc2618d78a0668d06e",
"feerate_percentiles": [
1,
1,
2,
2,
3
],
"height": 928556,
"ins": 1517,
"maxfee": 59288,
"maxfeerate": 92,
"maxtxsize": 43636,
"medianfee": 399,
"mediantime": 1766146969,
"mediantxsize": 223,
"minfee": 99,
"minfeerate": 1,
"mintxsize": 139,
"outs": 1545,
"subsidy": 312500000,
"swtotal_size": 249676,
"swtotal_weight": 597688,
"swtxs": 524,
"time": 1766147618,
"total_out": 96841435308,
"total_size": 292928,
"total_weight": 770696,
"totalfee": 507546,
"txs": 576,
"utxo_increase": 28,
"utxo_size_inc": 4565,
"utxo_increase_actual": -23,
"utxo_size_inc_actual": 309
}
$ bitcoin-cli getnettotals
{
"totalbytesrecv": 3131974501,
"totalbytessent": 7335018092,
"timemillis": 1766147627919,
"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 libre-relay-v30.0-1 - server 70016/Satoshi:30.0.0/
ipv4 npr total block libre
in 26 1 27
out 14 0 14 2 4
total 40 1 41
Local services: witness, compact filters, network limited, p2p v2, libre
Local addresses: n/a
$ bitcoin-cli -addrinfo
{
"addresses_known": {
"ipv4": 62486,
"ipv6": 0,
"onion": 0,
"i2p": 0,
"cjdns": 0,
"total": 62486
}
}
$ halving.sh 928556
=====================================
Bitcoin Block Halving prediction
=====================================
bc=928556
gbt=1231006505
bbt=1766147618
This is average time to mine a block
(1766147618-1231006505)/928556
bts=576.3147690448728511012248
Now let's multiply that by 1050000
which is the block number of next
halving and get the prediction:
Wed Mar 8 14:13:08 UTC 2028
-------------------------------------
Next palindrome will be 928829
predicted to happen at this time:
Sun Dec 21 08:15:51 UTC 2025
-------------------------------------
Current mining epoch number is 460.
The next fortnight happens in block
929376 and probably around this time:
Wed Dec 24 23:49:56 UTC 2025
### v2_peerinfo are in v2_peerinfo-bitcoin.txt
$ bitcoin-cli 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
9368a2868c6ca52d
d8697c481b6339734411359c40f32a07e9b589d78ee0ace63a3c1ea3b5f75df2
ce11c19bf8bf5570
88bd3b684d4ce4099c2c9e78365007b5e1e13b37b69580136433c2cc1032188b
b15e4d890262ee80
e9a41b96e5c4e09fef52c4a49db89376e7efd034bd4a2e625adc2c02885dd5bd
b33d9979c3ac519f
fe468c9082d1f2d2a5698000839f0612acc57604b1e68db987f11cb485d8439c
7b9a1ca6d304d08a
7f1a74c40a932e0442fb8f3545dc5a8b09c3c7bb5ba078a4987b13dfc5d3b4d9
2f483f8248b737c5
c52be77074176d57f290e6033fa8b7e357759b7d885b957de26dd45b2b9b4df7
9dcb5e85e7380fc8
a600f255f3c73c6a94dfeb4625c9792b0bf2962b5e5edb4c49fbc61a5872c8c8
3292d7567fdd2c15
dfbb9984b5bf4277aeae08d6a62b4fa2065738ffdb1e496788087a337275ec66
952c29ffb60124fb
31733c8f2ec035a6406a5ca456e0407131e95142eda2e4a745f09a9976626280
3da7a61d822d21c9
975d734b659852d2b12e64676322f019630b9ef7c6e225798bbb6f8e2e74b1d0
9eca5a639da9e95b
415d02a952ef2ce353ed5b06eac9489a2321910f84aff4c59f6289a82a1033d8
842b963a3d2d3874
c0fe0d4ff93a881503999420aca49db8028f7a2e070090a15a89ad3497454203
09da5e56a43c1088
05b2281efadb129eb2e5e354b8a1697fbf419660944fae17eb7fa31c24888d91
fc75407f2e57534b
3f21429c08bae67e5bb32ee2155e5164547ff4387ef093ba0904fac7c0e1cd60
64028e35a70f428d
2d1bf6e6e15e0b66a83f02a9adfde490970fa01193374de25c32ff2d89fe56df
847869ee07bf7a24
ec4e3c4ccbcf3bf6f02fb9bde838be7e41047e21784fd1d91634fe56adff3a54
7a1e7fe2aa7e3ee9
e9d450177142cfd072107f1a8b03d16730c622a0c6cfb89f2f814090647d1706
$ niceblack.sh $BH $BC
___ ____ ___ ____ ____ __
/ _ \___ \( _ ) | ___| ___| / /_
| (_) |__) / _ \ |___ \___ \| '_ \
\__, / __/ (_) | ___) |__) | (_) |
/_/_____\___/ |____/____/ \___/
,----- .123 4567 89ab cdef -----,
| |
| .. .... .... .... .... .f |
| 1. .... 6d2c 2d.f d1.a 1f |
| 2. ad64 75f2 e936 98cc 2f |
| 3. 2618 d78a .668 d.6e 3f |
'=== ==== ==== ==== ==== ==='
ak: 1fd1 75
................ .||.||.|..|.||..