The world computer
The cryptographic world computer
Ethereum is still called a blockchain. By 2030 it will be something else. A visual reading of Vitalik Buterin’s essay of 27 September 2026.
Two strands
02Two strands
How much crypto is in crypto?
Two strands: the ideas Satoshi put together, and the machinery fifty years of academia built, much of it not ready in 2009.
The whitepaper, again
03The whitepaper
Every section of the whitepaper changes
The essay reads Satoshi’s paper section by section. Here are its questions, answered as in 2010 and as in 2030.
Was this transaction authorized?
A signature
Which chain is the real one?
Proof of work
Is this block valid?
Download it all and run it again
How does a transaction get in?
You, the mempool, a miner, the block
What shape is the computation?
One step after another
How does a node save space?
It prunes old history
What can a light client check?
Consensus, trusting the majority for the rest
Is what you write private?
Only if nobody analyzes the graph
Are your account rules private?
No
Is what you read private?
Run a full node, or it is not
Is where you are private?
Hope the nodes are honest
Three shifts
04Three shifts
Checked with one proof, final in seconds, built by many
2010Download it all, run it again
A new block arrives
2030Sample the data, verify one proof
A new block arrives
The road in
05The road in
Private on the way in, and never kept out
One transaction’s way in, followed twice: the road it took in 2010, and the one it will take in 2030.
2010You, the mempool, a miner, the block
Structure
06Structure
The block keeps the changes; their proofs become one
Today every change in a block carries the signature or proof that allows it, and every node checks them one by one. In the essay’s 2030 the signatures and proofs are taken off early, checked together in the mempool and combined, so the block holds the changes, their order and one proof for all of them.
Checked one by one, in the blockEach change carries its proof, checked one by one
Many hands
07Many hands
More hands now add capacity, not only safety
Splitting work across a network was always possible. Checking each part was not: committees were slow, and failed without recourse.
08For you
What you can count on stays. What it costs you shrinks.
What you can count on
- UptimeAlways onThe same
- InclusionCensorship resistant
- ExecutionRuns exactly as programmedThe same
- FinalityIrreversibleThe same
- PrivacyNot yet a strength
What it still costs you
- CostVery high
- PrivacyLittle to none
- WaitingAbout 17 seconds a block, 200 to be sure
- Your nodeRun a big one, or trust someone
After Hegotá
09After Hegotá
After Hegotá, this is Ethereum’s main story
Next year’s fork, Hegotá, is likely Ethereum’s last conventional one. After it comes the work below.
The cryptographic
world computer
Cheaper, more scalable and more private high-security computation than the last era’s technology could offer on its own.
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