Question 1

Deposit Guide

Accepted Answer

How to deposit

You need to deposit tokens to rhino before you can enjoy gas-free & private swapping, trading and investing on rhino

rhino.fi is a layer 2 self-custodial platform based on the StarkWare StarkEx Layer 2 technology. Only you control your tokens on rhino - no one else can access them.

Create a rhino account

Go to app.rhino.fi
Connect one of the supported wallets to rhino.fi

Create your Layer 2 account on rhino. The two signatures create your account and allow you access to the rhino API. Only you control your rhino account (no one else can access) as rhino is a self-custodial platform (DEX)

Make your first deposit

Click the deposit button
You can deposit from a range of different layer 2’s (Arbitrum, Polygon, zkSync) as well as BNB Chain and Ethereum Mainnet

Select the token that you would like to deposit. Some tokens are only available on certain networks - for example, the AAVE token can be deposited from Ethereum. Tokens such as ETH can be deposited from many different chains

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Question 2

rhino.fi: Withdrawing Tokens

Accepted Answer

Withdrawing Tokens From rhino.fi.

You can withdraw tokens from rhino.fi back to their native chain.

Polygon Network, Arbitrum and BNB Chain:

Fast withdrawals - Unlimited liquidity for non-stablecoin tokens.
Fast withdrawals - Limited liquidity for USDC, USDT and DAI

Ethereum:

Fast withdrawals - Limited liquidity for all tokens
Regular/Slow withdrawals - Unlimited liquidity for all tokens

To see which withdrawal option is available for your token, go to the rhino.fi withdrawal widget

Withdrawals will default to the fast withdrawals if fast withdrawals are eligible for that selected token

You can change from 'fast' to 'regular' (if available) by clicking on the 'Advanced' link in the withdrawal widget

Fast Withdrawals

Fast withdrawals arrive your on-chain wallet almost instantly.

There is an unlimited amount of fast withdrawal liquidity for non-stablecoin tokens on Polygon, BNB Chain and Arbitrum

You can see the amounts of limited available fast withdrawal liquidity for Stablecoin & ETH tokens on the chains below buy looking at these smart contracts Ethereum: https://etherscan.io/address/0xaf8ae6955d07776ab690e565ba6fbc79b8de3a5d Polygon: https://polygonscan.com/address/0xBA4EEE20F434bC3908A0B18DA496348657133A7E Arbitrum: https://arbiscan.io/address/0x10417734001162ea139e8b044dfe28dbb8b28ad0#writeProxyContract BNB Chain: https://bscscan

Question 3

Why your first deposit costs more in gas

Accepted Answer

rhino.fi uses a Layer 2 scaling solution. Before an address can use it, it needs to be registered with our smart contract. This registration step is combined with your first deposit and hence adds a bit more gas to the transaction.

Question 4

rhino.fi: What is the purpose of the Data Availability Committee?

Accepted Answer

What is the purpose of the Data Availability Committee?

Why is the Data Availability Committee needed?

Privacy is key to trading. In addition to being slow, existing decentralised exchanges make all trades visible, even though professional traders want to protect their trading activity, and proprietary trading strategies, from competitors and public view. Privacy will be a key requirement for decentralised exchanges to gain traction with this audience moving forward.

In order to achieve privacy, rhino.fi traders' balance data will be moved off-chain, rather than being stored on the blockchain. StarkWare, the provider of rhino.fi's scalability engine, is currently exploring other privacy-achieving methods that could be implemented in the future, without the need for data to be stored purely off-chain by a committee. However, the current approach was chosen as a pragmatic solution following conversations with large customers, and will be improved in the future.

What is the Data Availability Committee’s Role?

The Data Availability Committee has three main functions:

Protect user trading privacy by allowing balance updates and trades to be hidden from other users.
Check the state of balances and, if valid, sign to allow the merkel root of the state to be updated on-chain.
Publish all balances data if rhino.fi and or StarkWare were ever to go offline, or withhold data.

The initial DAC committee is comprised of

Question 5

rhino.fi: Depositing Tokens

Accepted Answer

Depositing Tokens

Depositing Tokens To Your rhino.fi Account

This Video will take you through the steps required to deposit your tokens from your private wallet (MetaMask, Keystore or Ledger) to your rhino.fi exchange wallet on app.rhino.fi.

The rhino.fi exchange is what is known as a 'self-custodial' exchange. Instead of your tokens being held by a central party, deposited tokens are held by a series of open source smart contracts on the blockchain. These smart contracts take instructions from your private wallet every time you 'sign' a transaction, meaning that rhino.fi can only operate according to your instructions, for example to deposit, trade at a specific price or withdraw your tokens.

${youtube}Depositing tokens to rhino.fi

Question 6

Unlocking Legacy Tokens

Accepted Answer

Unlocking Legacy Tokens

Legacy Wrappers

From time to time, due to a variety of factors from site protection to upgrades, we need to update our contracts. While extremely rare, this would mean users may have funds in legacy contracts.

To access legacy balances for further trading, users are required to unlock them from these legacy wrappers and re-lock them in the live version.

The process involves interacting with the legacy wrapper via Etherscan in order to unlock your tokens:

**Please note that it is possible to interact with the legacy wrappers via other sites like myetherwallet, but this tutorial will focus on the unlocking method via Etherscan.

Requirements:

A browser with MetaMask installed (if using a hardware wallet, you'd need to first install Metamask, and then connect your hardware wallet to MetaMask).
Link to the legacy wrapper contract. Please find below the links to each of the contracts:

LEGACY CONTRACT 1

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