Fixr Protocol — ZK Selective Disclosure on Solana
A privacy primitive for Solana. Prove what you need. Leave the rest to the darkroom. SP1 zero-knowledge proofs meet Token-2022 confidential transfer -- one sheet of paper at a time.
Roll
001 / Q2-2026
Exposure
f/2.0 · ISO 3200
Status
Latent image
On Solana, every trade, every buy, every failed attempt is public forever. The price of a transparent ledger is that you can never take back what you've shown.
Observed problem
Wallet address = identity. Identity = lineage. Lineage = leverage against you in every future negotiation, airdrop, or accusation.
The whale
You want to prove you're a whale. But you don't want them to see your losses.
observed on chain
Phantom history: 247 failed txs, 3 rugs
The airdrop hunter
You want to claim the airdrop. But you don't want to hand over your entire trading history.
observed on chain
Snapshot: 140 wallets correlated
The private pool
You want to enter a private pool. But you don't want to dox the rest of your portfolio.
observed on chain
Gate requires: minSol > 100 AND ...
Fixr is the first Solana-native toolkit where you decide, field by field, what leaves the darkroom. No mixers. No burner wallets. Just proof.
Stack
Non-mixer
Selective disclosure, not obfuscation. Every proof is verifiable and compliance-friendly by construction.
Step 01
All your data
Your wallet history stays where it belongs -- on Solana, readable by anyone, enriched by Helius.
frame 01 / latent
Step 02
Select what to show
Pick the exact predicate you want to prove. Balance above a threshold. Holder of a specific NFT. Volume in a window.
frame 02 / latent
Step 03
Generate a proof
SP1 produces a selective disclosure proof. Token-2022 carries the confidential transfer. Only the predicate is public.
frame 03 / developed
Compose a predicate. Prove it. Share it. Under the hood, an SP1 circuit builds a nullifier-keyed commitment that reveals only the slice you chose, while the rest of your wallet stays latent in the darkroom.
01
Token-2022 confidential transfer
Send $FIXR with amounts encrypted natively. No mixer, no wrapping -- just the extension Solana already ships.
02
SP1 zero-knowledge prover
Succinct's general-purpose zkVM, wrapped for common Solana state. Arbitrary predicates, compact proofs.
03
Shareable proofs
Every proof has a URL and a QR. Hand it over and anyone can verify. Your wallet stays dark.
04
Developer SDK (soon)
Three lines and your protocol gates on proof, not on data hoarding. TypeScript today, Rust and Python next.
A proof starts with a challenge and ends with a URL. Between those two points, nothing leaves the darkroom except what you chose to fix.
const access = await fixr.requireProof({
wallet,
predicate: "solBalance >= 100",
bind: "session:abc123",
});
if (access.ok) grant();
// share: https://fixr.red/p/7a9bUser
Phantom
Signs a challenge, selects disclosure set.
Fixr UI
fixr.red
Packs selected fields, calls prover.
SP1 Prover
Succinct
Runs the selective disclosure circuit.
Proof
~9.2kb
Nullifier + commitments + public inputs.
Consumer
dApp / pool
Verifies proof. Grants access.
The fixer's currency. Minted on Token-2022 with the confidential transfer extension. Used for fees, stake, and votes.
Proof fees, then burn
Every proof costs a fraction of $FIXR. Those tokens go to the fire. Usage becomes scarcity.
Tier boost
Holding $FIXR raises your concurrent proof throughput and unlocks batch compositions.
Referral rewards
Protocols integrating the SDK stake $FIXR. In return they receive a cut of every proof they trigger.
Governance
Holders choose what gets added to the predicate library. KYC proof. Sanction proof. Whatever the darkroom will accept.
Final frame
One proof at a time. The light is red. The paper is blank. The image appears only if you say so.