wei3erhase/yearn-vesting-escrow

token vesting escrow with cliff and clawback

Yearn Vesting Escrow

A modified version of Curve Vesting Escrow contracts with added functionality:

• An escrow can have a start_date in the past.
• The first unlock can be delayed using cliff_length.
• An ability to claim partial amounts or use a different beneficiary account.
• An ability to open_claim and let anyone to claim for beneficiary recipient.
• An ability to terminate an escrow and choose beneficiary for the unvested tokens using revoke. The recipient is still entitled to the vested portion.
• An ability to use ERC20 non-compliant token, e.g. USDT.
• An ability to support_vyper at escrow creation.
• Factory admin controls removed, anyone can deploy escrows, funds are pulled instead of pushed.
• Factory emits an event which allows finding all the escrows deployed from it.

Contracts

• VestingEscrowFactory: Factory to deploy many simplified vesting contracts
• VestingEscrowSimple: Simplified vesting contract that holds tokens for a single beneficiary

Usage

$ ape console --network mainnet
funder = accounts.load(name)
factory = project.VestingEscrowFactory.at('0x200C92Dd85730872Ab6A1e7d5E40A067066257cF')
factory.deploy_vesting_contract(token, recipient, amount, vesting_duration, vesting_start, cliff_length, open_claim, support_vyper, owner, sender=funder)

Ethereum mainnet deployment

v0.3.0

This version is audited by Mixbytes.

• VestingEscrowFactory: 0x200C92Dd85730872Ab6A1e7d5E40A067066257cF
• VestingEscrowSimple: 0x9692F652A3048eb7F5074e12B907F20d33F37a01

v0.2.0

• VestingEscrowFactory: 0x98d3872b4025ABE58C4667216047Fe549378d90f
• VestingEscrowSimple: 0xaB080A16007DC2E34b99F269a0217B4e96f88813

v0.1.0

⚠️ This version has an unpatched bug, do not call renounce_ownership on it.

• VestingEscrowFactory: 0xF124534bfa6Ac7b89483B401B4115Ec0d27cad6A
• VestingEscrowSimple: 0x9c351CabC5d9e1393678d221F84E6EE3D05c016F

Ethereum Rinkeby testnet deployment

v0.1.0

• VestingEscrowFactory: 0x2836925b66345e1c118ec87bbe44fce2e5a558f6
• VestingEscrowSimple: 0x8bb4edaf9269a3427ede1d1ad1885f6f9d5731f5

Ethereum Ropsten testnet deployment

v0.1.0

• VestingEscrowFactory: 0x8bb4edaf9269a3427ede1d1ad1885f6f9d5731f5
• VestingEscrowSimple: 0xd887a875f4bc3b2aa5928e46607b7a06facfe3d0