Avalanche Fuji

Avalanche Fuji C-Chain is the primary host chain for this Privacy on Avalanche section. Your dApp contracts and the local Inbox live here; fees are paid in AVAX; private computation still runs on COTI Testnet.

Use the Solidity preset PodUserFuji (or configure the Inbox + COTI executor manually) so Fuji dApps route to COTI Testnet chain ID 7082400.

Note: Addresses below reflect the current PoD test deployment. They may change after contract redeploys. Confirm against your SDK release or environment before production use.

Network details

Parameter	Value
Network name	Avalanche Fuji C-Chain
Chain ID	43113
Currency	AVAX
RPC URL	https://api.avax-test.network/ext/bc/C/rpc
Block explorer	https://testnet.snowscan.xyz

Private execution for Fuji 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	0xf2283ca93a6747c547a961c50d0393d549c57268	Local/remote token prices used by Inbox and Privacy Portal fee conversion
MpcAdder (example)	0xf51c789e4c60d33a2abcfd656e607724f56aaf0d	Reference primitive-only adder dApp on Fuji

Privacy Portal (Fuji)

Deployed factory and implementations for private-token flows on Fuji (aligned with @coti-io/coti-wallet-plugin / PEI deployConfig.json):

Contract	Address
Privacy Portal factory	0xf3cf653e1baee7b4e4001067780dee38991b1cbd
Portal implementation	0x63e97937e42c153cdeb25e9aca9d3d0373aec0a5
Pod token implementation	0xa7e4838327317f4ce6cc8b5ab07a57fdba842c77

Privacy Portal tokens

Token	Underlying	Portal	pToken
pMTT	0x328e70e1c52662cd5f19f824fcb8b463d77a6686	0xf4100d21eB4B1a66aDde58A01D1E32356F268b3F	0xFC6283a9000d7D5Cf8A058A04A9ED90265Af1634
pUSDC	0x5425890298aed601595a70AB815c96711a31Bc65	0x090D2dc8C38275939b9381Ff2aa53012Ff412E34	0xe2235E064a3CEB5F1765c3b095855549d3c8A8a4
pWAVAX	0xd00ae08403B9bbb9124bB305C09058E32C39A48c	0x20e7239cd78BDf2E8f34c52947e54fE68D7b536F	0x0c58954d91392794A50F610dF8c84228D63BE9D4

How this network fits PoD

Piece	Role on Fuji
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 Fuji fee budgets against COTI-side costs

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

SDK constants

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

Constant	Value
Chain ID	43113 (AVALANCHE_FUJI_CHAIN_ID)
Inbox	0x3b8B70819f27e0438cBcE7f31894f799da52648F (FUJI_DEFAULT_INBOX_ADDRESS)
Solidity preset	PodUserFuji — sets Fuji Inbox and configures COTI Testnet MPC executor

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

Getting Fuji AVAX and exploring txs

Step-by-step wallet, faucet, and toolchain setup: Getting started on Avalanche Fuji (Day 0).

• Fund a wallet with test AVAX, then deploy and call your dApp with enough msg.value for two-way Inbox fees.

• Verify contracts and transactions on SnowScan testnet.

• Hands-on next step: Tutorial: private Adder on Avalanche Fuji.