How to Manage Ethereum, Solana and TON in One Wallet

Managing Ethereum, Solana and TON in one wallet takes a wallet that derives all three account types from a single backup and implements each ecosystem's address format, signing curve and dApp connection standard. WATS does this in one non-custodial wallet, covering all three ecosystems alongside Arbitrum, Optimism, Base, Polygon and BNB Chain: three address formats and two signing curves handled internally, so you send, receive, swap and bridge from one app instead of three. Network fees can be paid in one token, ATS, instead of stocking ETH, SOL and TON separately for gas — on EVM chains that runs on ERC-4337 account abstraction, and ATS moves between chains as a LayerZero OFT. WATS does not support Bitcoin, so BTC on the Bitcoin base layer still needs a wallet of its own.

To manage Ethereum, Solana and TON in one wallet, you need a wallet that understands all three address formats, derives all three accounts from a single backup, and lets you send, receive, swap and bridge without opening a separate app for each chain. The hard part is not storing the coins — most wallets can display balances from several networks. The hard part is that these three ecosystems were built independently, with different address formats, different signing schemes, and three separate native gas tokens (ETH, SOL and TON) that every transaction insists on being paid in. This guide explains why that friction exists, what to look for in a genuinely unified wallet, and how WATS brings EVM chains, Solana and TON under one wallet with a single fee token — while being explicit about what it does and does not cover.

Why managing multiple chains is hard

Ethereum, Solana and TON are not three flavours of the same thing. They are separate ecosystems with their own conventions, and that surfaces as real friction the moment you try to hold all three in one place.

• Different address formats. An Ethereum address is 42 characters long — the prefix 0x followed by 40 hexadecimal characters. A Solana address is a base58-encoded ed25519 public key with no prefix. A TON address is different again, usually shown in a user-friendly base64url form. Paste the wrong format into the wrong field and the transaction simply will not go — or worse, you second-guess yourself every time you send.
• Different signing curves and transaction formats. EVM chains sign with secp256k1 ECDSA, while Solana and TON both use ed25519. A single recovery phrase can derive keys for all of them through standard hierarchical-deterministic derivation paths, but the wallet still has to implement each curve and each chain's transaction format. That engineering cost is exactly why so many "multi-chain" wallets stop at the EVM boundary.
• Separate native gas tokens. Every chain charges its network fee in its own currency. Ethereum and its rollups want ETH, Solana wants SOL, TON wants TON, and sidechains like Polygon and BNB Chain want their own native tokens again. You can be sitting on a healthy balance and still be unable to move it because the one account you needed for gas is empty.
• Juggling several single-chain wallets. The common workaround is to run a different wallet for each ecosystem — one for EVM, one for Solana, one for TON. That means several recovery phrases to back up, several apps to keep updated, and several attack surfaces to worry about. Your "portfolio" becomes a mental spreadsheet you maintain by hand.
• Different dApp connection standards. Connecting to an EVM app means an EIP-1193 provider or WalletConnect. Solana apps use the wallet-standard adapter. TON apps use TON Connect. A wallet that only speaks one of these languages leaves you switching tools mid-task.

None of this is a flaw in any single chain. It is the natural consequence of independent ecosystems maturing on their own. But for you, the user, it adds up to the same daily tax: more accounts to manage, more gas tokens to pre-fund, and more chances to make a costly mistake.

What to look for in a unified wallet

"Multi-chain" is printed on almost every wallet's homepage, so the word alone tells you little. A few honest questions separate a wallet that genuinely unifies ecosystems from one that merely lists several balances on the same screen.

• One wallet, not three pasted together. Does it give you a single account set you manage across chains from one backup, or is it really three wallets behind one icon, each with its own recovery phrase to track? True unification means you set up and secure one thing.
• Does it actually cross the EVM boundary? Plenty of wallets unify several EVM chains — that is the easy case, since they share an address format and a signing curve. The meaningful test is whether the same wallet reaches non-EVM ecosystems like Solana and TON in the same interface.
• How does it handle gas? A unified balance view is little comfort if you still have to source ETH, SOL and TON separately just to pay fees. Look at whether the wallet does anything structural about the native-gas problem or simply leaves it to you.
• Custody model. Convenience features sometimes change who can move funds. Confirm that the wallet is non-custodial in plain terms: you hold the keys, you hold the recovery phrase, and the provider cannot sign on your behalf.
• Send, receive, swap and bridge in one place. The point of unification is doing the whole job without leaving the app. If swapping or bridging between ecosystems sends you off to a third-party site, the wallet has unified the view but not the work.

Hold any candidate up to these questions and the marketing falls away quickly. Most wallets clear the "show several balances" bar; far fewer clear "one wallet, across EVM and non-EVM, with the gas problem actually addressed".

How WATS unifies EVM, Solana and TON

WATS is a non-custodial Web3 wallet that ships as four products under one brand: the Chrome extension, the mobile app, the browser-based Hot Wallet and the physical NFC Metal Card. The point that matters to multi-chain users is the chain coverage behind them. One WATS wallet spans Ethereum, Arbitrum, Optimism, Base, Polygon and BNB Chain on the EVM side, plus Solana and TON — eight chains across three ecosystems, from one backup.

In practice that means you send, receive, swap and bridge from one place. WATS handles the differing address formats and signing curves for you, so you are not pasting a base58 Solana address into an EVM field or guessing which app speaks which connection standard. Connecting to a dApp, signing a transaction, moving assets between supported chains — it happens inside the same wallet rather than across a drawer full of separate single-chain apps. You back up one recovery phrase, not three.

The Hot Wallet runs entirely in the browser at web.watswallet.com with nothing to install, which makes it a low-friction way to reach all three ecosystems from a desktop. Reaching them does not cost you custody: like every WATS product, the Hot Wallet is fully non-custodial. You hold your own keys and your own recovery phrase, and WATS never holds a key or has any ability to move your funds. The Chrome extension and the mobile app follow exactly the same self-custody model, so whichever surface you use, control stays with you.

If you want a hardware factor on top of that, the optional NFC Metal Card is worth understanding correctly, because it is closer to a physical security key than to a cold-storage vault. It stores no private keys at all. It carries a unique card ID, pairs to exactly one device, and authenticates by tap over standard contactless NFC — ISO/IEC 14443, an NTAG 216 chip and AES-128 — to keys that continue to live in the WATS apps. The body is machined metal, rated IP68 and tested against MIL-STD-810, so it survives being carried rather than stored in a drawer.

One fee token instead of three

The unification that matters most day to day is gas. Normally, managing Ethereum, Solana and TON means keeping a little ETH, a little SOL and a little TON sitting idle in three places purely to pay fees, and topping each one up before you can transact. The WATS Hot Wallet replaces that with a single fee token: ATS.

Paying in ATS means the network fee for an action — a transfer, a swap, a token approval — is settled from one balance instead of each chain's native gas token. It is worth being precise about what that does and does not change. The underlying network cost does not vanish, and this is not a discount: every chain is still settled in its own native token underneath — ETH on Ethereum and its rollups, SOL on Solana, TON on TON. What changes is which token you have to hold and fund, not what the network charges. On EVM chains the mechanism is ERC-4337 account abstraction, where a paymaster pays the native gas and is settled in ATS instead. ATS itself is issued as a LayerZero OFT — an omnichain fungible token — so it is one token that moves natively between the supported chains rather than a separate wrapped copy stranded on each. Because the fee tracks live network conditions rather than a fixed published figure, it moves with the real cost on each chain.

The benefit is purely operational, and it is real:

• One balance to keep topped up instead of three native gas tokens across three ecosystems.
• Fewer blocked transactions from the classic "plenty of the asset, but no native gas on that chain" failure.
• No bridging just to cover gas on a network you only use occasionally.
• Less idle dust scattered as gas reserves you can never quite spend down.

On the token side, ATS supply is being reduced from an initial 100 million down to 30 million through burns. That is a supply mechanic, not a fee mechanic — it does not make transactions cheaper, and no honest explanation of gas abstraction should imply otherwise. If you want the mechanics of where gas comes from in the first place, crypto gas fees explained covers the fundamentals, the reference details live on the ATS fee page, and if you are weighing single-fee-token designs against each other, the best single fee-token wallets compares the approaches.

Be honest about scope: no Bitcoin

A unified wallet is only useful if you know exactly where its edges are, so here is the candid boundary. WATS covers Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, Solana and TON. It does not support Bitcoin. If your holdings are anchored in BTC on the Bitcoin base layer, WATS is not the place to manage that part of your portfolio, and no amount of "multi-chain" framing changes that.

This matters because plenty of people hold ETH, SOL, TON and BTC. For the first three, WATS gives you one wallet and one fee token. For Bitcoin, you will still need a wallet that speaks it. Knowing that up front is the difference between a wallet that fits your actual mix and one you adopt and then quietly outgrow.

The decision rule is simple. If your activity lives across Ethereum, Solana, TON and the major EVM rollups, one wallet with one fee token removes most of the daily friction. If Bitcoin is central to how you hold value, plan on WATS covering everything except that.

Putting it together

Managing three ecosystems well is less about any single feature and more about removing repeated friction. With WATS, the practical flow looks like this: set up one non-custodial wallet, back up one recovery phrase, fund a single ATS balance for fees, and from there send, receive, swap and bridge across the EVM chains, Solana and TON without switching apps or chasing native gas. When you want the same wallet in your pocket, the mobile app carries it to your phone, and the optional NFC Metal Card adds a tap-to-authenticate factor on top — you can start from the download page.

Bottom line

Holding Ethereum, Solana and TON in one wallet is hard for honest reasons: three address formats, two signing curves, three connection standards and three native gas tokens you would otherwise stock separately, usually across three different apps. A genuinely unified wallet collapses that into one backup that crosses the EVM boundary and does something structural about gas. WATS does exactly that — one non-custodial wallet across Ethereum, Arbitrum, Optimism, Base, Polygon, BNB Chain, Solana and TON, with ATS replacing three native gas balances via ERC-4337 account abstraction on EVM and LayerZero OFT transport between chains. The trade-off worth stating plainly is scope: WATS does not support Bitcoin. So if your world is EVM, Solana and TON, the concrete next step is to set up a single WATS wallet and fund one ATS balance for fees instead of three; if BTC is a meaningful part of what you hold, keep a dedicated Bitcoin wallet running alongside it.