Deposit & Withdrawal Limits

Limits updates: Limits are updated based on periodic reviews of usage and demand.

06/08/24 Optimism View transaction

• Max pool size reduced to 500,000 USDC

• Daily deposit limit set to 100,000 USDC for tier 1 and tier 2 users

• Additional deposit limits adjusted across tiers (see current values in table below) for the zkBob ETH pool on Optimism.

Polygon View transaction

• Max pool size reduced to 750,000 USDC

• Daily deposit limit set to 100,000 USDC for tier 1 and tier 2 users

Tron

• Pool size reduced to 500,000 USDT

• Single deposit and daily deposit limits set to 1,000 USDT

23/07/24 Polygon USDC pool deposit limits reduced from 10,000 to 1,000 per day.

View Transaction

• Daily user deposit limit set to 1000 USD

• Single deposit limit set to 1000 USD

• Daily user direct deposit capped at 1000 USD

• Limits are imposed to protect against large deposits and withdrawals which may result from illegal activity (for example a hack where attackers need to quickly move a large amount of funds).

• By default, new users are limited in the amount they can deposit and withdraw.

• Users with optional KYC through the Know your Cat protocol or businesses with inherent KYC can access higher limits through tiered limits.

• zkBob is multichain, with different limits for different tiers which can also vary by chain.

• There are 2 pools for Optimism, one for USDC and a second for ETH.

• Limits are reviewed periodically and adjusted as needed to maintain security and follow industry standards.

Limits Table

	Tier 1	Tier 2	Tier 3
Demographic	New Users with no KYC	Individuals w/ Know Your Cat KYC	Businesses with inherent KYC
Single deposit	Polygon: 1,000 USDC Optimism: 10,000 USDC 3 ETH Tron: 1,000 USDT	USDC & USDT 20,000 6 ETH	USDC & USDT 100,000 30 ETH
Single address per 24/hr	Polygon: 1,000 USDC Optimism: 10,000 USDC 3 ETH Tron: 1,000 USDT	USDC & USDT 20,000 6 ETH	USDC & USDT 100,000 30 ETH
All deposits from all users	Polygon: 100,000 USDC Optimism: 100,000 USDC 30 ETH Tron 100,000 USDT	USDC & USDT 100,000 30 ETH	USDC & USDT 300,000 30 ETH
All withdrawals from all users per 24/hr	Polygon: 300,000 USDC Optimism: 300,000 USDC 50 ETH Tron 50,000 USDT	Polygon: 300,000 USDC Optimism: 300,000 USDC 50 ETH Tron 50,000 USDT	Polygon: 300,000 USDC Optimism: 300,000 USDC 50 ETH Tron 50,000 USDT
Transfers	Polygon: 0.10/tx USDC Optimism: dynamic/tx USDC ETH Tron: 0 USDT	Polygon: 0.10/tx USDC Optimism: dynamic/tx USDC ETH Tron: 0 USDT	Polygon: 0.10/tx USDC Optimism: dynamic/tx USDC ETH Tron: 0 USDT
Overall Pool Size	Polygon: 750,000 USDC Optimism: 500,000 USDC 150 ETH Tron: 500,000 USDT	Polygon: 750,000 USDC Optimism: 500,000 USDC 150 ETH Tron: 500,000 USDT	Polygon: 750,000 USDC Optimism: 500,000 USDC 150 ETH Tron: 500,000 USDT