Coinpassport V2 Contracts

Foundry repository for the contracts for Coinpassport V2 which tokenizes your passport into an NFT privately using a Semaphore Group.

Regular epochs

Every ~8 weeks¹, a new epoch will begin. Each user must join the new group associated with the new epoch.

As a consequence:

• Expired passports deactivate without revealing their expiration date (especially since you don't have to join all epochs)
• ZK proof generation time is minimized because the merkle tree only contains active users within the epoch instead of all-time active users
• Provides users a chance to reinvent their anonymous persona each epoch (i.e. if you get doxxed, you can start over at the next epoch)
  • Also minimizes anonymity penalties facing early adopters

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¹too short and it's too much rejoining, too long and expirations lag

Deploy

VerificationV2 to Holesky:

$ SIGNER=0x182dA9ECA9234A4c67E2355534c368e707DF8911 \
SEMAPHORE=0x05D816D46cF7A39600648cA040e94678b8342277 \
FEE_TOKEN=0x925556a61d27e2e30e9e3a2eb45feedfd2003801 \
GROUP_ID=5 \
GROUP_DEPTH=16 \
forge script script/VerificationV2.s.sol:Deploy --rpc-url https://ethereum-holesky.publicnode.com/ --broadcast --verify -vvvv

DummyERC20 to Holesky:

$ forge script script/DummyERC20.s.sol:Deploy --rpc-url https://ethereum-holesky.publicnode.com/ --broadcast --verify -vvvv

FeeERC20 to Holesky:

$ COLLECTOR=0x0000000000000000000000000000000000000000 \
PAY_TOKEN=0x61BA23E3584EFCD67d3b265bfe7bAf0fE3da791D \
PAY_AMOUNT=10 \
FEE_RECIPIENT=0xa48c718AE6dE6599c5A46Fd6caBff54Def39473a \
forge script script/FeeERC20.s.sol:Deploy --rpc-url https://ethereum-holesky.publicnode.com/ --broadcast --verify -vvvv

Update the collector setting using setCollector function after deploying VerificationV2 since it's a circular reference.

License

MIT