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Introduction
FAQs
Getting Started
Resources
What Can I Do With Bancor?
The V2.1 Difference
Developer Quick Start
Working with Bancor Network
Trading with Bancor
Adding Single-Sided Liquidity
Adding Liquidity
Removing Liquidity
Deploying Liquidity Pools
Deploying Bancor Contracts for Testing
Bancor v2.1
Overview
Other Guides
Trading on Bancor - General
Triggering the Bancor Vortex Burner
Deploying a Liquidity Pool for Testing
Liquidity Provision - General
Managing Ownership of Liquidity Pools
Upgrading a Liquidity Pool
Interfacing with Bancor Contracts
Querying a Pool Contract
Measuring Trading Volume
Network Architecture
Overview
Ethereum
BancorX
Ethereum Contracts
Addresses
API Reference
Security
REST API
Overview
API Reference
SDK
Using the Bancor SDK
API Reference
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Liquidity Provision - General
General guide for users on how to be a market maker for a Bancor liquidity pool
Liquidity providers are the foundation of any Bancor liquidity pool. The Bancor team and the DeFi community at large have developed a number of ways to make the liquidity provision process as simple as possible.
The team wrote a helpful guide to adding and removing liquidity. Check it out here.
Alternatively, developers can interact with the Bancor contracts directly.
Developers are encouraged to use the guide in the Developer Quick Start section.

Adding Liquidity via Etherscan

The first required piece of information is the Converter contract address for the liquidity pool.
  • Find the SmartToken for the relevant pool on Etherscan and navigate to the Read tab in the contract view.
  • Find the address in the return value for the owner function
For each ERC20 token that you contribute to a liquidity pool, you'll need to approve the transfer amount on each of the contracts.
  • Find the token contract on Etherscan
  • Find the _approve function in the Write section of the contract page
  • Execute the _approve function with the following parameters:
    • _spender: This should be the converter address you found above
    • _amount: This is the number of tokens of this kind of you plan to contribute. Remember to consider the ERC20 decimals (.e.g. 200 DAI would equal 200 ^ 10**18)
Repeat this step for all the relevant tokens.
Now, find the Converter contract on Etherscan. Execute the fund function with the following parameter:
  • _amount: This is the number of liquidity tokens you expect the liquidity pool to issue you. Finding this figure may require some math to calculate the expected liquidity token issuance based on your contribution and the outstanding balance of assets in the pool

Removing Liquidity via Etherscan

  • Find the token contract on Etherscan
  • Execute the liquidate function with the following parameter:
    • _amount: The number of liquidity tokens you would like to redeem for the underlying reserves
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Other Guides - Previous
Deploying a Liquidity Pool for Testing
Next - Other Guides
Managing Ownership of Liquidity Pools
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Contents
Adding Liquidity via Etherscan
Removing Liquidity via Etherscan