Deployed MACI Smart Contracts

There are a number of MACI's smart contracts which can be re-used by different deployments. These are the following:

• VkRegistry
• PoseidonHashers
• PollFactory
• MessageProcessorFactory
• TallyFactory
• Verifier
• FreeForAllPolicy
• ConstantInitialVoiceCreditProxy - if you are happy to work with a fixed amount of credits

VkRegistries can be re-used by different protocols to share the same set of verifying keys. Please be advised that you should be verifying that those verifying keys are the ones that have undergone a trusted setup ceremony.

In order to verify you will need the following:

• configure the cli (cd cli && cp .env.example .env and set the correct env vars)
• download the keys (pnpm download-zkeys:ceremony from the monorepo root)
• run checkVerifyingKeys with the cli (see below)

cd cli && node build/ts/index.js checkVerifyingKeys -q false -vk 0x74569d524a193daC0D3Df17B9E207C916174745b -s 6 -i 2 -m 9 -v 3 -b 2 -p ./zkeys/ProcessMessages_6-9-2-3/processMessages_6-9-2-3.zkey -t ./zkeys/TallyVotes_6-2-3/tallyVotes_6-2-3.zkey

info

You should change the -vk parameter to the VkRegistry address for the chain you are deploying to. Also you might need to modify the parameters based on the circuit configuration. Please refer to the circuits page for more information. Also you can add -uq false if you want to check non quadratic voting keys.

Contract Addresses

Arbitrum Sepolia

Contract	Address
ConstantInitialVoiceCreditProxy (99 Credits)	0x41a29A58A63A998c9Edde6883Bcec2d89835a8e9
Verifier	0xB400794f463d90ce5f462A43d8E6f9155656d02d
PoseidonT3	0xa0e0aC07c211D329ebA2D6ec552F4dC1B230A89A
PoseidonT4	0x4f02c99df5731C8C69f6baa62Aa4C9f99C529CE2
PoseidonT5	0xB8Bc2c7cF71441fF7E6F111D3457e3d61c564968
PoseidonT6	0x37282fEde56aa1d7266Ecb12DC3b342D12044e2E

Arbitrum Mainnet

Contract	Address
ConstantInitialVoiceCreditProxy (200 Credits)	0x16FC13edD59D4b9F788Fb11A70eA022E1Bb1B856
Verifier	0x2427Ab201488Ac81Bec421F179B1Be23c55ebC27
PoseidonT3	0x2F1398ab5E322d357dF8CdD2e7ba73122c5FDDA4
PoseidonT4	0x8778dA47eF619f56341fE95514e95fa0FF3B77C6
PoseidonT5	0x43B519FF023757508311518AC41B5fA1CfD57181
PoseidonT6	0xb123798B1b21082100D289BeA24bFF0F8dfcbEe1

Optimism

Contract	Address
ConstantInitialVoiceCreditProxy (200 Credits)	0x83dD551541C580e338206f1f677835D427C92dE2
Verifier	0x88C2c6A7535463962A34757FE63cc4F296381aba
PoseidonT3	0xF8E637e5c9EC3A8d8fa8843A6dF833348E1F1E66
PoseidonT4	0x0a0D66baFDa8c8838281084d9C3d68Dd9a6Fc274
PoseidonT5	0xD2F6c828606Ad8e985008Cd825012f269B50CD58
PoseidonT6	0x982530673Ce9e5Efa02438c694d48327Aa4fB592

Optimism Sepolia

Contract	Address
ConstantInitialVoiceCreditProxy (99 Credits)	0x4473aC3e68ad78D67757336ABaAa2Dced08cfcdF
Verifier	0xB1abb44291ff487f96636758b07Ccd9881f64c9A
PoseidonT3	0x07490eba00dc4ACA6721D052Fa4C5002Aa077233
PoseidonT4	0xbb0e724CE02e5E7eDd31e632dc6e59F229a1126d
PoseidonT5	0xE0398F7DFAC494c530F6404AfEaC8669ABeD2679
PoseidonT6	0xfD77833F10a29c76A6a0ede235Eb651D744d0E2F

Scroll Sepolia

Contract	Address
ConstantInitialVoiceCreditProxy (99 Credits)	0xB486cce9B4507A67Db147B0802D5673774C8D278
Verifier	0xD5C41106db85EDd0298279AcFCE5A722060cc5f9
PoseidonT3	0x88C2c6A7535463962A34757FE63cc4F296381aba
PoseidonT4	0x0a0D66baFDa8c8838281084d9C3d68Dd9a6Fc274
PoseidonT5	0xE0398F7DFAC494c530F6404AfEaC8669ABeD2679
PoseidonT6	0xD2F6c828606Ad8e985008Cd825012f269B50CD58

Base

Contract	Address
ConstantInitialVoiceCreditProxy (200 Credits)	0x16FC13edD59D4b9F788Fb11A70eA022E1Bb1B856
Verifier	0x2427Ab201488Ac81Bec421F179B1Be23c55ebC27
PoseidonT3	0x2F1398ab5E322d357dF8CdD2e7ba73122c5FDDA4
PoseidonT4	0x8778dA47eF619f56341fE95514e95fa0FF3B77C6
PoseidonT5	0xB8Bc2c7cF71441fF7E6F111D3457e3d61c564968
PoseidonT6	0x37282fEde56aa1d7266Ecb12DC3b342D12044e2E

Base Sepolia

Contract	Address
ConstantInitialVoiceCreditProxy (99 Credits)	0x16FC13edD59D4b9F788Fb11A70eA022E1Bb1B856
Verifier	0x2427Ab201488Ac81Bec421F179B1Be23c55ebC27
PoseidonT3	0x2F1398ab5E322d357dF8CdD2e7ba73122c5FDDA4
PoseidonT4	0x8778dA47eF619f56341fE95514e95fa0FF3B77C6
PoseidonT5	0xB8Bc2c7cF71441fF7E6F111D3457e3d61c564968
PoseidonT6	0x37282fEde56aa1d7266Ecb12DC3b342D12044e2E