{% hint style="info" %} Limits updates: Limits are updated based on periodic reviews of usage and demand.
06/08/24
Optimism
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- 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
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- 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.
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Daily user deposit limit set to 1000 USD
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Single deposit limit set to 1000 USD
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Daily user direct deposit capped at 1000 USD {% endhint %}
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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).
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By default, new users are limited in the amount they can deposit and withdraw.
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Users with optional KYC through the Know your Cat protocol or businesses with inherent KYC can access higher limits through tiered limits.
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zkBob is multichain, with different limits for different tiers which can also vary by chain.
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There are 2 pools for Optimism, one for USDC and a second for ETH.
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Limits are reviewed periodically and adjusted as needed to maintain security and follow industry standards.
| 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 |