On-Chain Deposits

Troubleshooting and policy questions for funding Alphio over the blockchain — USDC, stablecoins, and supported chains.

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I sent USDC but it hasn't arrived. Almost always one of these:

• Confirmation lag — the network has accepted the tx but Alphio's indexer hasn't credited it yet. See the confirmation table below.
• Wrong chain — the deposit went to a chain Alphio doesn't index for that token (e.g. sent USDC on a chain not in the deposit dialog's network list).
• Wrong address — sent to a different wallet you own, not the deposit address Alphio displayed.
• Memo / tag missing — some tokens / chains require a memo or destination tag. Alphio's deposit dialog only shows a memo field when one is required; if it showed one, it's mandatory.

To investigate, copy the tx hash from your sending wallet and confirm:

• The recipient address matches the address Alphio showed at the moment of the deposit.
• The chain in the tx explorer matches the chain you selected in the deposit dialog.
• The token contract on the explorer matches a supported stablecoin.

If all three match and the deposit still hasn't credited after 1 hour, contact support with the tx hash, the chain, and your account email.

I sent on the wrong chain — can I recover?

warning

Wrong-chain deposits are not always recoverable. Recovery depends on whether Alphio's wallet infrastructure supports that chain at all and whether the destination address is also valid on the wrong chain.

• If the destination address exists on the wrong chain and Alphio's ops team can sign for it, recovery may be possible manually and case-by-case, sometimes with a fee deducted to cover the gas required to move the funds.
• If the address isn't reachable on that chain (different address format, different controller), the funds are likely unrecoverable.

Contact support immediately with the tx hash, sending wallet, intended chain, and actual chain. Do not send more funds in an attempt to "push" the first one through.

How long does on-chain confirmation take? Confirmation depends on the chain. As a rough guide:

• Ethereum mainnet — ~1 to 5 minutes after the first confirmation; Alphio waits for a small number of confirmations.
• Polygon — usually under 1 minute.
• Arbitrum / Base / Optimism — typically 30 seconds to 2 minutes.
• Solana — usually under 30 seconds.

These are typical, not guaranteed. During chain congestion (memecoin runs, major mints, NFT drops), confirmations can take much longer.

Minimum on-chain deposit?

warning

Minimum deposit amounts per chain and per token are still being finalized, and they vary because Alphio sets the minimum to cover its own indexer / gas overhead.

The deposit dialog shows the current effective minimum for the chain and token you've selected. Deposits below that minimum may not credit and may be unrecoverable. Always check the minimum in the dialog before sending.

Which tokens and chains are accepted?

warning

The exact list of supported tokens and chains is being finalized and expanding over time.

The deposit dialog enumerates the current supported chain / token pairs at the moment you open it. Sending a token not in that list, or sending a supported token on an unsupported chain, may result in unrecoverable funds. Treat the dialog as authoritative — if a chain or token isn't offered, it isn't supported right now.

Gas fees seem too high — is there a cheaper chain? Yes — Alphio supports several L2s precisely for this reason. For small deposits (under a few hundred USDC), Ethereum mainnet gas can rival the deposit amount itself.

• Arbitrum / Base / Optimism / Polygon — typically cents to a fraction of a dollar in gas.
• Solana — fractions of a cent in gas.
• Ethereum mainnet — pay only when you specifically need it (e.g. coming from a mainnet wallet you don't want to bridge).

Bridge from mainnet to an L2 first if your funds are stranded on Ethereum and gas is prohibitive — most native bridges and aggregators (e.g. official L2 bridges, Across, Stargate) are cheaper than depositing directly on mainnet.