Today is the last day of the zamaS4 season, and I hope everyone's rankings have improved.

I watched a keynote speech video by Zama, and the core message was one thing: conducting confidential transactions on Ethereum. A lady named Aurora Poppyseed spoke; she is a senior developer relations engineer. Let's take a look at what she actually said.

Her workshop teaches you how to write confidential smart contracts on Ethereum using the Zama protocol. The focus is on how to handle encrypted data and logic, enabling private transactions in fields such as DeFi and healthcare.

Question: Why are all your assets running naked?
Many people shout every day, "Blockchain is transparent, so it is safe." It sounds beautiful.
But the reality is, how much assets you have, who you transferred money to, and what you usually bought, are all completely exposed. Hackers, whales, analysts, anyone can see it clearly.
Is this really called safe? No.
This is actually an inherent flaw of blockchain; it fundamentally "does not possess privacy."

What exactly is Zama doing?
What Zama is doing is using a technology called "Fully Homomorphic Encryption (FHE)" to enable private transactions on a public blockchain.
In simple terms, your money runs on the chain, but what others see is just a string of completely unintelligible "garbled text." Only you can decipher this garbled text to see the actual amount.
Key Technology 1: Not a single key rules the world
They didn't leave the keys on the server; that would be asking for trouble.
Their approach is to split a key into many parts, which are distributed among different nodes. Multiple parties must participate simultaneously to decrypt the data. Moreover, all calculations are performed off-chain.
Even if hackers obtain one of the keys, they still cannot decrypt it. It is much safer.

Key Technology Two: Direct Computing in Encrypted State

In the past, if you wanted to do calculations, such as calculating the balance, you had to decrypt the data first, and this decryption exposed your privacy.
Now, the advantage of FHE is that it can perform operations "in an encrypted state". Calculating balances, making transfers, addition, subtraction, multiplication, and division can all be done without decryption. The final result obtained is still ciphertext.
This is the ultimate solution for on-chain privacy.
What truly changes the industry?
It's not a boastful PPT, but actual stuff.
The ERC-20 token is finally going to "evolve into a privacy version".
Zama and OpenZeppelin have teamed up to create a new standard: ERC-7984 (Confidential version of ERC-20).
In the future, when you make a transfer, the contract can calculate normally, but others will only see a hash value. This is the true meaning of "visible operation, invisible amount."

Where can it be used?
It's not just that simple with private transactions.
It can also be used in:
Blind shooting
Anonymous voting
Privacy DeFi
Cryptographic Identity
A truly private financial system has launched on Testnet. They say the Ethereum mainnet will go live this year, and later it will expand to other EVM chains and even Solana.

This is not just "drawing a cake"; this is a privacy infrastructure that is already usable.
This is not "painting"; it is an already usable privacy infrastructure.
@zama
#ZamaCreatorProgram