Built for Robinhood Chain

Private payments.
Non-custodial by design.

Hold, send, swap and recover frontier assets with 2-of-3 threshold security, smart-account execution and a privacy stack designed for real operations.

Explore protocol $KENTRA coin page

2-of-3Threshold quorum

4337Smart accounts

4663Chain ID

Threshold
Account

ADeviceLocal shard

BCo-signerPolicy shard

CPasskeyRecovery shard

Robinhood ChainERC-43372-of-3 QuorumPasskeysViem SDKTauri v2ERC-5564USDGNative ETHPolicy Co-SignerRobinhood ChainERC-43372-of-3 QuorumPasskeysViem SDKTauri v2ERC-5564USDGNative ETHPolicy Co-Signer

Product

Security that feels like a normal wallet.

Kentra coordinates custody, policy, privacy and recovery without handing control to a custodian.

2-of-3 threshold custody

One wallet. Three shards. No single point of failure.

Your key is split between your device, a policy-aware co-signer and a hardware passkey recovery shard.

Passkey recovery

Recover access without carrying a seed phrase.

A hardware-backed recovery shard can combine with the co-signer for emergency key rotation or fund migration.

Privacy plane

Private receiving without changing your public identity.

ERC-5564 stealth addresses create one-time destinations, with screened privacy infrastructure on the roadmap.

Signing architecture

Five steps. Two signatures. One verifiable settlement.

Every stage has a clear boundary and no single shard has enough authority to spend.

Live signing sequenceProtected

ClientShard A

2 / 3Quorum

PolicyShard B

01Build

02Client sign

03Policy co-sign

04Combine

05Settle

Open SDK

Build threshold wallets into your own product.

A typed TypeScript SDK built on Viem exposes the same smart-account and signing primitives used by the Kentra desktop client.

npm SDK View source

import { PrivatumWallet } from
"@privatumrh/robinhood-chain-sdk";

const wallet = await PrivatumWallet.connect();
await wallet.transfer({ asset: "USDG", privacy: "stealth" });

Bridge rebates

25%of measured relayer spread returned

Bridge across four chains and earn part of the spread back.

Destination gas is separated from relayer margin so the actual spread can be measured. The rebate connects to the $KENTRA ecosystem incentive layer.

EthereumBaseArbitrumRobinhood Chain

Bridge through Kentra

Move ETH or USDG using Relay routing and quotes.

Measure the spread

Only actual relayer margin becomes rebate-eligible.

Settle on Robinhood Chain

The rebate accrues after the bridge settles.

Connected experience

One custody model across every payment surface.

Desktop, SDK, swaps, stealth receive, recovery and bridge flows stay anchored to the same 2-of-3 model.

DesktopSend, swap, bridge and policy.

SDKTyped Viem APIs.

Robinhood ChainNative settlement.

Private receiveERC-5564 destinations.

Roadmap

Roadmap to native privacy.

Custody first. Open infrastructure second. Privacy expands in layers without weakening recoverability.

Shipped

Robinhood Chain Custody MVP

ERC-4337 smart accounts, 2-of-3 threshold sharding, passkey recovery and a Tauri v2 desktop client.

Shipped

Open SDK & Developer Ecosystem

A typed TypeScript toolkit built on Viem with guides and audit-ready threshold primitives.

In progress

DEX Aggregation & USDG/ETH Swaps

Low-slippage routing with transparent quotes, slippage controls and policy-checked execution.

Privacy Plane One

Threshold ECDSA and blind co-signing with ZK policy proofs.

Planned

Privacy Plane Two

ERC-5564 stealth addresses, receiver unlinkability and screened privacy pools.

Planned

Multichain Expansion

Additional EVM adapters and L2 networks using one portable shard model.

Desktop client

Your keys stay close to you.

Keep the local shard encrypted in your operating-system keystore.

WindowsWindows 10 / 11

macOSmacOS 11+

LinuxDebian / AppImage

FAQ

Common questions.

Technical answers about custody, recovery and settlement.

Kentra Protocol is a self-custodial smart wallet and open developer toolkit engineered for Robinhood Chain, an Arbitrum-powered EVM L2 with Chain ID 4663. It supports USDG and native ETH with no single point of failure.

Your private key is split into three independent shards: one on your device, one with the policy co-signer, and one for passkey recovery. Any two can authorize, while no single party can move funds alone.

The passkey recovery shard can combine with the co-signer shard to initiate emergency key rotation or fund migration without exposing a seed phrase.

No. Kentra Protocol operates only the automated co-signer shard. Every transaction requires a 2-of-3 quorum.

Kentra Protocol is built natively for Robinhood Chain with native ETH for gas and settlement and USDG as a core stablecoin rail.

Kentra Protocol

Build private payments on Robinhood Chain.

Explore the architecture, developer tools and roadmap to native privacy.

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