Ethereum Sepolia

Ethereum Sepolia is a supported host chain for Privacy on Demand. Your dApp contracts and the local Inbox live here; private computation still runs on COTI Testnet.

Note: Addresses below match pod-ecosystem-integration/deployConfig.json (Inbox salt pod.inbox.v2.2). They may change after contract redeploys. Confirm against that file or your SDK release before production use.

Network details

Parameter	Value
Network name	Ethereum Sepolia
Chain ID	11155111
Currency	ETH
RPC URL	https://rpc.sepolia.org (or your preferred Sepolia provider)
Block explorer	https://sepolia.etherscan.io

Private execution for Sepolia dApps targets COTI Testnet (7082400). See COTI Testnet for the MPC executor and COTI-side Inbox.

PoD contracts

Contract	Address	Description
Inbox	0x3b8B70819f27e0438cBcE7f31894f799da52648F	Cross-chain message router (CREATE3; same address on every PoD chain)
Price oracle	0x71f0deac8adb89b7f1b09b38e2531e06bcca0b03	Local/remote token prices used by Inbox fee conversion
MpcAdder (example)	0xacc74e07db35fb740509fc82228e631f4f08441c	Reference primitive-only adder dApp on Sepolia

PoD cross-chain Privacy Portal (Sepolia)

This is the PoD host-chain Privacy Portal (factory + pTokens on Sepolia, private compute via COTI Inbox). It is not the native COTI Privacy Portal / PrivateERC20 that runs entirely on COTI.

Contract	Address
Privacy Portal factory	0x11a27bdf2b2c251609d78d5c9b53b3c2d71d663c
Portal implementation	0x9f4607850ebff3e364bea998816b13f7a59933fb
Pod token implementation	0x3d6510ad5b4139f4fc2f8e94ab9d740e1b9f72ad

Privacy Portal tokens

Token	Underlying	Portal	pToken
p.MTT	0xd3f5c63f4D87D2235b295FbA83351d31d0eD1BeE	0x7e1fecDBC7393A7165Ae7f5F1c56baA4D12c6fc0	0x0510F0b32828D5fB472dE5A5bE30b370c5D1a056
p.USDC	0x1c7D4B196Cb0C7B01d743Fbc6116a902379C7238	0x0D02bD729698630c6f9776cDE1C8e5E00146202e	0xD7B3D49F85000489708B7db5B0f1a8693Fc707f3
p.WETH	0x7b79995e5f793A07Bc00c21412e50Ecae098E7f9	0x2C8B9bBeC8604143863c90D02FdF626a7D5a51C5	0xd33A363459c6Ee0C4F8504E380E8D3Aa4F209116

How this network fits PoD

Piece	Role on Sepolia
Inbox	Host-side courier: accepts encrypted requests from your dApp and delivers COTI callbacks
Your dApp	Configures Inbox + COTI chain ID 7082400 + MPC executor on COTI Testnet
Price oracle	Converts Sepolia fee budgets against COTI-side costs

Flow at a glance: user / dApp on Sepolia → Sepolia Inbox → (relayer) → COTI Inbox → MPC executor → callback to Sepolia.

Hands-on next step: Tutorial: private Adder on Sepolia.

SDK constants

In @coti-io/pod-sdk / @coti-io/coti-contracts:

Constant	Value
Chain ID	11155111
Inbox	0x3b8B70819f27e0438cBcE7f31894f799da52648F (SEPOLIA_DEFAULT_INBOX_ADDRESS)
Solidity preset	PodUserSepolia — sets Sepolia Inbox and configures COTI Testnet MPC executor

Point configureCoti at the COTI Testnet MPC executor and chain ID 7082400 if you are not using PodUserSepolia.