> ## Documentation Index
> Fetch the complete documentation index at: https://docs.aifinpay.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported networks

> AiFinPay is live across 12 networks — 7 with the full smart-contract stack, plus splitter settlement on Optimism, BOT Chain, XRPL EVM, NEAR and Aptos.

AiFinPay is **multichain by design** — chains are execution environments, not
products. The same SDK and the same fee-on-top model work across every network.
**Twelve networks are live today.**

<Info>
  SDK settlement is live on **Polygon** (default) today. The full contract stack
  is deployed across the chains below; the Solana program is deployed, but its
  `b2b_pay_with_split` settlement instruction and per-chain SDK routing are still
  rolling out. All Cores carry the canonical manifesto hash `0x27b28e30…`.
</Info>

## Full Core — 7 chains

Core + AgentPassport + mSECCO, with Pyth-priced settlement.

| Network       | Assets             | Explorer                                   | Key contract                                                                                              |
| ------------- | ------------------ | ------------------------------------------ | --------------------------------------------------------------------------------------------------------- |
| **Solana**    | SOL · USDC · USDT  | [solscan.io](https://solscan.io)           | Program [`5g9zWHF1…vKFx2`](https://solscan.io/account/5g9zWHF1Vv6GiGpA2ZbJQbSCDZd5hAk9AyvabRJvKFx2)       |
| **Polygon**   | POL · USDC · USDT  | [polygonscan.com](https://polygonscan.com) | B2BSplitter [`0xE34Fc0…8440`](https://polygonscan.com/address/0xE34Fc0E6694821c600Fa0955C0F74720ea6d8440) |
| **Avalanche** | AVAX · USDC · USDT | [snowtrace.io](https://snowtrace.io)       | Core [`0x147d8f…94cC`](https://snowtrace.io/address/0x147d8fF8c027E24303b5B99CbC8843e1D3dF94cC)           |
| **BNB Chain** | BNB · USDC · USDT  | [bscscan.com](https://bscscan.com)         | Core [`0x29e751…b542`](https://bscscan.com/address/0x29e7519C653E1b383e8Be74675666bbA51bAb542)            |
| **Arbitrum**  | ETH · USDC         | [arbiscan.io](https://arbiscan.io)         | Core [`0x147d8f…94cC`](https://arbiscan.io/address/0x147d8fF8c027E24303b5B99CbC8843e1D3dF94cC)            |
| **Base**      | ETH · USDC         | [basescan.org](https://basescan.org)       | Core [`0xF03B33…Eb74`](https://basescan.org/address/0xF03B3387415D557b6ab709D06E8aF0b4ABD6Eb74)           |
| **Unichain**  | ETH · USDC         | [uniscan.xyz](https://uniscan.xyz)         | Core [`0x493dc0…6f53`](https://uniscan.xyz/address/0x493dc0e34f13b2fd50bab7156d3850f3b86c6f53)            |

Each Full Core chain also deploys **AgentPassport** and **mSECCO**; Base and
Unichain additionally have a standalone **B2BSplitter**. See the
[manifest](https://api.aifinpay.io/manifesto.json) for the complete address set.

## Splitter — 3 chains

Atomic split settlement via the B2BSplitter (no oracle).

| Network       | Assets     | Explorer                                                   | B2BSplitter                                                                                            |
| ------------- | ---------- | ---------------------------------------------------------- | ------------------------------------------------------------------------------------------------------ |
| **Optimism**  | ETH · USDC | [optimistic.etherscan.io](https://optimistic.etherscan.io) | [`0xee9280…a83cb`](https://optimistic.etherscan.io/address/0xee92807decaa3a02f1e165dd7efcd92ab9aa83cb) |
| **BOT Chain** | BOT        | [scan.botchain.ai](https://scan.botchain.ai)               | [`0x271870…b587`](https://scan.botchain.ai/address/0x271870ABb6e6756D97191eBdb27C1873911bb587)         |
| **XRPL EVM**  | XRP        | [explorer.xrplevm.org](https://explorer.xrplevm.org)       | —                                                                                                      |

## Splitter MVP — 2 chains (non-EVM)

| Network   | Assets | Explorer                                                 |
| --------- | ------ | -------------------------------------------------------- |
| **NEAR**  | NEAR   | [nearblocks.io](https://nearblocks.io)                   |
| **Aptos** | APT    | [explorer.aptoslabs.com](https://explorer.aptoslabs.com) |

<Note>
  Also live on **testnet**: **Casper** (Agentic Buildathon — an agent settlement
  layer) and **Sui** (Move).
</Note>

## Fee model

A flat protocol fee is added on top of the provider's price and settled in one
transaction — **99% provider / 1% treasury / 0.01% creator**. No token, no
staking — pay per request. Treasury is multisig-owned.

## How an agent proves payment

* **EVM chains:** the on-chain split tx → resend with `x-tx-hash` + `x-order-id`.
* **Solana:** Ed25519 signature over a one-time nonce + `b2b_pay_with_split` → `x-solana-tx` + `x-order-id`.

See [x402 by hand](/pay/manual-flow) for the full handshake.