Contracts

Contracts

Live deployments

Arc Testnet (public, chainId 5042002)

ContractAddress
ArcPayHub0x79ab5a4B2770BF087aF2fF4CEdb0E67A413bf293
UsernameRegistry0xBF6c8b430BE134C40fEF316601ef002a4F8e2dBb
TipJar0x45daE58fB5b89C4E994216D2af0B73232641DF3B
Subscriptions0xbb84078Aa19b9c5Eb397782dE9b58939C38d1380
ContentPaywall0x680884124F21939548Ba7f982B4F275A55783484
PayPerCall0xe407A796D81302987Ef950bdC01Ef4eA0b081b6C

Arc Local (chainId 1337)

ContractAddress
ArcPayHub0x1b38dE812703aaED3fE7B584e2a0E8D0b95F60Cb
UsernameRegistry0xD85677eBC8b242E5110C69f1d1f134389319632C
TipJar0xC627bf4D1f21dcc82Ef563191f63723CD290959f
Subscriptions0x0D4e458145A8eE377FD90295dd3332ee5BC90aE4
ContentPaywall0x352fc9770F1c72c0B91d7D62946EDa67A6288A95
PayPerCall0xc6f99Bdb0985aC8c5E7819f3e89dccA7C8A4C06a

Deploy your own

git clone https://github.com/wanggang22/arcpay
cd arcpay/contracts
forge build
 
RPC=https://rpc.testnet.arc.network \
  PK=0x<your-private-key> \
  FEE_RECIPIENT=0x<your-address> \
  FEE_BPS=200 \
  bash script/deploy.sh

Testing

forge test -vvv

21 tests cover the full lifecycle of all 4 payment modes plus edge cases (invalid username, wrong payment, unauthorized access, fee caps).

Gas costs (Arc testnet, USDC native)

ActionGasCost @ 1gwei
Register username~180k$0.00018
Tip (registered user)~180k$0.00018
Create subscription plan~240k$0.00024
Subscribe (3 months)~260k$0.00026
Create content~230k$0.00023
Purchase content~190k$0.00019
Register API endpoint~230k$0.00023
Pay API call~180k$0.00018

Security notes

  • Protocol fee capped at 10% (currently 2%)
  • claimRefund is permissionless (per ERC-8183 anti-block pattern)
  • Single-evaluator design (no disputes, by design; use reputation layer for high-value jobs)
  • No reentrancy guards needed — all external calls are at end-of-function after state changes
  • Contract is not upgradeable (immutable-by-design)
SDK ReferenceTemplates