SatsAtlas

⚑ Block #954,636

πŸ“¦ A stuffed block, a tiny fee bill β€” NiceHash packs them in tight

37/ 100

June 21, 2026 at 03:34 AM UTC

Block 954636 squeezed 4,585 transactions into its full 1.61 MB frame, hitting right up against the weight limit. Despite all that activity, the total fees paid were just 0.023 BTC β€” a sign that most of these transactions were lightweight and sent when the mempool wasn't demanding much. It's a neat example of how a 'busy' block and a 'cheap' block can be the same block.

Coinbase message

left by the miner

 ‘øþZΒƒ ­Í}2/NiceHash/

The coinbase is the first transaction in a block β€” miners can embed a short message in it.

Block details

from mempool.space

Mining pool
NiceHash
Transactions
4,585
Total fees
0.023 BTC
Subsidy
3.125 BTC
Median fee
2 sat/vB
Block size
1.61 MB

Why our analysis flagged it

score 37/100

  • Heavy block: 4,585 transactions+16
  • Unusually low fees: 0.023 BTC+12
  • Block mined right up to the weight limit+8

Scores are computed from on-chain facts (a deterministic heuristic), then a story is written for blocks that clear our curation threshold.

This day in Bitcoin history

reward era 5

This block sits 114,636 blocks after the 4th halving and 95,364 blocks before the 5th β€” Bitcoin’s 5th reward era.

  • 2012-11-281st halving14y before this block
  • 2016-07-092nd halving10y before this block
  • 2017-12-172017 ATH (~$19.5k)9y before this block
  • 2020-05-113rd halving6y before this block
  • 2021-11-102021 ATH (~$69k)5y before this block
  • 2024-03-142024 ATH (~$73k)2y before this block
  • 2024-04-194th halving2y before this block
View on mempool.space β†—Blockstream Explorer β†—