Why has the #Fusaka base fee on Ethereum increased by 15 million times in less than 24 hours after the #blob upgrade?

It's not because demand suddenly exploded, but because — #以太坊 finally stopped "giving away computing power for free."
Summary in one sentence
Blob fees skyrocketed, not because they became more expensive, but because they returned from "almost free" to "reasonable pricing."
Let's first look at how exaggerated the result is
Before the Fusaka upgrade:
blob base fee ≈ 1 wei
Equal to 0.000000001 Gwei
Basically free
Less than 24 hours after the Fusaka upgrade:
blob base fee 14 million to 16 million wei
Peak close to 20 million wei
Average about 14.7 million wei
👉 On the surface: a surge of about 15 million times
👉 Essentially: from 0 back to the normal world
What exactly is a blob? In plain language
L1 (Ethereum mainnet): the central brain, secure but expensive
L2 (Arbitrum / Optimism, etc.): auxiliary side brain, cheap and fast
But for L2 to be secure,
it must submit transaction data back to L1,
and this data is stored in blobs.
👉 blob gas fee = the "data availability fee" paid by L2 to L1

Where is the problem?
After the Dencun upgrade:
blob usage skyrocketed
But blobs have no minimum price mechanism
As a result:
blob fees remain stuck at 1 wei for a long time
Nodes need to perform KZG verification (very high computational cost)
but can hardly earn any fees

👉 The core issue:
The network is subsidizing L2, and nodes are working at a loss
What did Fusaka do? The key is EIP-7918
Fusaka introduced a very important mechanism:
setting a "minimum wage" for blob fees
The rule is:
blob base fee ≥ 1/16 of the L1 execution base fee
(precise value about 1/15.258)
In other words:
Previously: blobs could be as low as 1 wei
Now: even the lowest cannot go below the minimum price
Historical backtesting shows:
Reasonable range ≈ 0.01 to 0.5 Gwei
Compared to 1 wei: 10,000 to 500 million times higher
So after Fusaka's launch,
a direct "price jump" is a mechanism switch, not an anomaly
Why is this a good thing?
① Blob finally reflects real costs
KZG proof computation
Network bandwidth
Node verification burden
No longer given for free
② The fee market begins to function normally
Blob can control flow through price increases
Avoiding pointless occupation and congestion
③ Paving the way for future scaling
Fusaka also introduces PeerDAS (data sampling)
Nodes only perform sampling verification
Total blob capacity can increase several times
What does this mean for ETH's economic model?
It is a real benefit for ETH burnings.
Estimated data (based on backtesting & optimistic assumptions):
Blockworks: burn amount ≈ 8 times increase
Bitwise:
By 2026, blob could
burn over 200,000 to 400,000 ETH per year
accounting for 30% to 50% of total burnings
Of course, the premise is:
👉 L2 transaction volume continues to grow
Final words
This is not that blob has "become more expensive,"
but that Ethereum is finally no longer doing charity.
Fusaka's signal is very clear:
L2 can continue to expand
but must pay for the real costs
ETH is beginning to regain its pricing power
Moving from "subsidized scaling" to "sustainable scaling."