Zero-knowledge proofs
A prover demonstrates that a transaction satisfies defined constraints without revealing the private witness. Circuit design and the proving system determine exactly which facts stay private.
PRIVACY, ENGINEERED.
THE PRIVATE TRANSACTION APPLICATION
Beyond
visibility.
There is power in what you don’t reveal.
A dedicated privacy application for Solana.
Designed to put that power back in your hands.
FIG. 001 / PRIVATE EXECUTION CORE
ARCHITECTURE / IN DEVELOPMENTPRIVATE BY INTENTION.
SCROLL TO EXPLORE01 — YOUR KEYS. YOUR VISIBILITY.STANDALONE APPLICATION / COMING SOON
ZERO-KNOWLEDGE DESIGNSELF-CUSTODY FIRSTBUILT AROUND SOLANASELECTIVE DISCLOSURE
THE UMBRA PRINCIPLE / 001
Verification shouldn’t require exposure.
We’re building a private space between your assets and everyone else’s attention.
01 / Under the hood
A public ledger should not mean a public life. UMBRA explores a different relationship between verification and visibility.
Privacy, grounded
in mathematics.
Cryptographic assurance replaces unnecessary disclosure. The proposed architecture separates what the network must verify from what the world gets to see.
The privacy engine / design preview
Trust the proof.
Keep the details.
UMBRA / CRYPTOGRAPHIC PIPELINE•••
PRIVATE
INPUT
INPUT
COMMITMENT
PUBLIC
VERIFICATION
VERIFICATION
A commitment, not a confession.
A cryptographic commitment represents a private note without publishing its underlying secret. Commitments can be organized in a Merkle tree so membership can later be proven.
ILLUSTRATIVE COMMITMENT / 0x8fa2…c71d · PRIVATE INPUT REMAINS LOCAL
Commitments & nullifiers
Commitments bind private notes to the protocol state. A unique nullifier marks a note as spent, preventing double-spending without directly exposing the note’s secret.
Local key authority
The intended app keeps spending authority on the user’s device. Separate viewing permissions and optional disclosure can provide visibility when the owner chooses to share it.
Architecture direction, not a deployed or audited protocol. Final primitives, circuits, encryption schemes and security parameters will be documented before release.
DESIGNED AROUND YOUR CONTROLAPP / PREVIEW
✓
On your terms.Your keys. Your visibility settings.
umbra:•••••••••••••• Private
•••••• SOL
◈ Generate proof locally ↗
Illustrative interface · private transfers are not yet available.
02 / A standalone application
A private space.
Entirely yours.
Not another tab to forget. A focused application designed to bring private balances, note management and transaction proofs into one deliberate, understandable experience.
Shielded account workspace Planned
Client-side proof generation Research
Encrypted note management Planned
Optional viewing permissions Planned
Release information ↗THE VISIBILITY PRINCIPLE
What you reveal
should be a choice.
Move the control to explore selective visibility. In the proposed application, viewing permissions would be cryptographically separate from spending authority.
ILLUSTRATIVE DATA / NOT A REAL ACCOUNTSHIELDED
RECIPIENT7xKp…9mQv
AMOUNT12.500 SOL
PRIVATE NOTE0xA81F…D42C
PRIVATESELECTIVE REVEAL
Visual explanation only. This slider does not encrypt or decrypt data.
03 / The community layer
Shared momentum.
Private ambition.
A planned reward round every 60 seconds. Once funding and payouts are live, the full distributable fees collected during a round will go to one randomly selected eligible wallet. Connecting alone never spends your funds.
REGISTRATION OPEN · PAYOUTS NOT LIVE
00:60
Until the next 60-second boundary
Funded reward pool
0.000 SOLRegister your Solana wallet with a message signature. The public leaderboard displays your wallet address. No transaction or token approval is requested.
Registration is separate from UMBRA’s future private transfers.
Community leaderboard
Loading…| # | PARTICIPANT | STATUS | WON / SOL |
|---|
The network starts with you.The first registered wallets will appear here.
Rewards begin after funding and payout activation.
Rewards begin after funding and payout activation.
Registration order does not improve winning odds. No prizes have been distributed through this site.
01 / Connect & verifyChoose a Solana wallet and sign a one-time registration message. Your private keys and seed phrase are never requested.
02 / Enter the participant poolVerified addresses appear in the shared list. Registration is per wallet; it is not proof of a unique person. Final eligibility rules are pending.
03 / A funded draw every minuteThe intended mechanism selects one eligible wallet per funded round. Public randomness, automated payouts and transaction receipts must be activated before live draws.
04 / Coming out of the shadows
The next chapter
stays yours.
The standalone UMBRA app is in development. Downloads will become available here when the first release is ready.
No release date announced. No download or installation is available yet.
05 / A little more clarity
Clarity, without compromise.
What exactly is UMBRA?
UMBRA is a project developing a standalone application for private transactions on Solana. This site introduces the proposed architecture and supports wallet registration for the community rewards programme. The privacy app itself is not released.
Does encryption make every transaction invisible?
No. Encryption protects data, while transaction privacy depends on the entire system: proof circuits, note structure, relayers, network metadata and user behaviour. Timing, amounts, deposits and withdrawals may still reveal correlations. UMBRA does not claim absolute anonymity.
Will UMBRA hold my keys?
The design direction is self-custody: spending keys remain under your control. A production release will need secure key storage, recovery guidance and a documented threat model. Never share your seed phrase with this site or anyone claiming to represent UMBRA.
How do the fee rewards work?
The planned distribution sends the full distributable fee pool for each 60-second round to one randomly selected eligible wallet. The fee source, verifiable randomness and payout service are not connected yet. Registration is open, but there are currently no live draws or payouts.
Why does joining reveal my wallet address?
The rewards leaderboard is public and separate from the proposed privacy application. By signing the registration message you consent to your public wallet address appearing in the participant list. Disconnecting your wallet does not remove a prior registration; use the Remove registration option while connected.
Has the protocol been audited?
No completed audit has been provided. This site makes no audit or security certification claims. Before release, the implementation should undergo independent review and publish its scope, findings and remediation status.