OTUS

Solana wallet · Open source

Know what
you sign

Otus shows you exactly what a transaction carries. Every balance it moves, every program it calls, everything it adds. No "just trust us".

You check. You proceed.

Free · Self-custodial · Your keys never leave your device

Otus reviewing a Squads proposal on app.squads.so: you approve 0.19 SOL from the vault, 2 of 2 approvals with yours

Don't trust,
verify.

Every request opens in three steps. Read as much or as little as you want, then decide.

  1. 1Balances
    A Squads proposal you approve: 0.19 SOL from the vault, 2 of 2 approvals with yours

    Every balance of yours that changes, and what a proposal you vote on would do with its vault.

  2. 2Programs
    Squads v4 opened: ProposalApprove, read from its IDL, and what Otus adds

    Each program and instruction in plain words, and everything Otus adds to it.

  3. 3Verdict
    Verdict: looks safe, no warnings

    A verdict with its reasons. Never a blind "approve".

Verdict: not safe. Someone could take all the tokens in an account of yours

When it's wrong

You see it
before it happens

A fake site asks you for one signature. Otus reads what it really does:

  • ×An unlimited approval: someone could move all your USDC, any time
  • !Almost all your SOL leaves
  • !squads-vault.example is not squads.so
  • !You never signed for this site

Otus never decides for you. To sign something it flags as not safe, you first say you understand the risk.

Guards

Onchain guards
lock in what you reviewed

When you sign, Otus adds onchain checks that hold your accounts to what you reviewed. If a transaction would leave you with less, it fails onchain and nothing moves.

Everything Otus adds is listed in the review, under its own name. Nothing hidden.

ADDED BY OTUS
+ Lighthouse: 2 guards on your accounts
+ Compute Budget: 62,000 compute units

HELD ONCHAIN
Your SOL: only the fee leaves
or the whole transaction fails
Activity: a payment to Ana opened, with its fee, memo, programs and full address; above it, dust from a lookalike address, flagged

Activity

No explorer needed

Every transaction of yours, read in plain words, right in the wallet.

  • ✓Every balance it moved, the fee and who paid it
  • ✓Its memo, its programs, the full address on the other side
  • ✓Dust from lookalike addresses flagged, failures with what they cost

The explorer is one click away, if you still want it.

The wallet

Simple where it can be

  • ✓Keys sealed on your device (AES-256-GCM, password through Argon2id), or on a Ledger.
  • ✓Warns when an address only looks like one you know.
  • ✓Squads v4 proposals read in words.
  • ✓Activity for each wallet.
  • ✓Works with any Solana app.
Send: an address that only looks like Ana's, caught

Open source

Every line is public

Read it. Build it. Compare it with what you installed. A wallet that asks you to verify should be verifiable itself.

Read the code

Know what you sign