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# Multi-chain deployment

pERC20 runs on **Ethereum, Base, Arbitrum, and Monad** with identical bytecode per chain.

## Why contracts don't change

`OrchardVerifier` binds signatures to `block.chainid`. Independent deployments are automatically isolated.

**Client rule**: proof `chain_id` MUST equal the pool's chain, not the wallet's current network.

## Deployment model

| Component        | Per chain   | Shared        |
| ---------------- | ----------- | ------------- |
| Groth16 verifier | ✓           | —             |
| PERC20Factory    | ✓           | —             |
| Asset pool clone | ✓ per token | —             |
| privacy-prover   | optional    | ✓             |
| store-service    | —           | ✓ coordinator |

## Frontend

* `apps/web/src/config/chains.ts`
* Env: `VITE_CHAINS` JSON (indexer + relayer URLs per chain)

## Airdrop dedup

One claim per wallet **per chain**: key = `(wallet_address, chain_id)`.

## Test addresses

See [Performance benchmarks](/plabs-docs/ecosystem/performance.md) §3.2.

## Source

Full backend integration: `docs/multichain.md`

## Next

* [pERC20 issuance](/plabs-docs/privacy-core/perc20/issuance-and-deployment.md)
* [Home](/plabs-docs/readme.md)


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