Blockchain Layer

• Solana mainnet-beta

• Helius RPC + fallback

• USDC SPL

• Simple SPL transfers for escrow and payouts

• Optional Anchor program later for advanced logic

Solana Integration:

• Network: Mainnet-beta, Devnet

• RPC: Uses public Solana RPCs

• Libraries: solana-py, solders

Supported Tokens:

TOKENS = {
    "SOL": {
        "type": "native",
        "decimals": 9
    },
    "USDC": {
        "type": "spl-token",
        "address": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
        "decimals": 6
    },
    "USDT": {
        "type": "spl-token",
        "address": "Es9vMFrzaCERmJfrF4H2FYD4KCoNkY11McCe8BenwNYB",
        "decimals": 6
    }
}

Transaction Flow:

# Facilitator creates unsigned transaction
from solana.transaction import Transaction
from solders.keypair import Keypair

# Build transaction
tx = Transaction()
tx.add(transfer_instruction)

# User signs (on client)
user_signature = user_wallet.sign(tx)

# Facilitator signs and submits
facilitator_keypair = Keypair.from_base58_string(PRIVATE_KEY)
tx.sign_partial([facilitator_keypair])
signature = await client.send_transaction(tx)

Network Fees:

• SOL transfer: 0.000005 SOL ($0.0005)

• SPL token transfer: 0.00001 SOL ($0.001)

• Facilitator pays ALL fees