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Preprod Testnet
Midnight Message Board
Write messages to the Midnight blockchain using Zero-Knowledge Proofs
Current On-Chain Message
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How It Works
1. You type a message
2. Server generates a Zero-Knowledge Proof
3. Transaction is submitted to the Midnight blockchain
4. Message is stored on-chain (public), but who wrote it is hidden (ZK)
ZK Proof Magic
Your message is publicly visible on the blockchain, but Zero-Knowledge Proofs ensure that the identity of who submitted it remains completely hidden. The server wallet pays the fees - you don't need any tokens!
PUBLIC: Message content
PRIVATE: Sender identity
Write a Message
Note: ZK proof generation takes 30-120 seconds. Please be patient!
Message History
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What the Blockchain Actually Sees
Real data from a Midnight transaction. Look carefully - something crucial is missing.
$ midnight-indexer query tx --preprod
tx_hash: 1ab74713e214ecb0...d971b8e0
block: #141,870 proto: v22.000 time: 2026-03-31T08:34:36Z
contract: dfd583f87611ad15...2adeeaac
state: 6d69646e696768743a636f6e7472...5d3a38... (disclosed data only)
zswap: [0] (shielded) dust: [1] 6d69646e...(encrypted blob)
unshielded_out: [] unshielded_in: []
sender: ???balance: ???dust_spent: ???utxo: ???
Nowhere in this data
Sender Address
NOT RECORDED
Balance
NOT RECORDED
Which DUST
NOT RECORDED
DUST Amount
NOT RECORDED
Identity Link
NOT RECORDED
TX History
NOT RECORDED
Cardano (Transparent)
sender: addr1q5xk...fv9q
amount: 500 ADA
fee: 0.17 ADA
Fully traceable
Midnight (Privacy)
sender: HIDDEN
amount: HIDDEN
fee: HIDDEN
Only validity proven via ZK
This is Zero-Knowledge.
The ZK proof mathematically proves the transaction is valid - without revealing WHO sent it, HOW MUCH they own, or WHICH coins were spent.
Server Wallet Balance
tNight
-
DUST
-
Total Messages
0
Est. DUST Used
0
~Cost/Msg
~0.5Q
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