Token swap notices: do exchange holders need to act?

You hold a token on an exchange. A notice appears with the word “swap” in the title, a ticker you have never seen, and a list of UTC times. The instinct is to do something: withdraw, sell, find the project's swap page. Usually the notice is asking for much less than that.

Read it for three things only. Which of your holdings it covers. Which deadline applies to you. And what one old token becomes.

Four events hiding under one word

One headline can bundle several changes. Binance titled its May 2025 notice “Token Swap and Rebranding to Vaulta (A)”, and its March 2026 completion notice for MANTRA named three things at once: a token swap, a redenomination and a rebranding. Pull them apart before deciding anything.

A single event can be any combination. The combination matters because each piece creates a different risk: a rebrand confuses searches, a redenomination confuses charts, and a contract or network move is what actually strands tokens sent to the wrong place.

Where your tokens sit decides most of the answer

Spot balance on the exchange that published the notice

This is the easy case. The EOS notice said Binance “will handle all technical requirements” for users holding the token on the platform. The balance is converted inside the account at the stated ratio. You do not claim anything, sign anything or visit a project site.

What you may still need to watch is everything that is not a plain spot balance. In the same EOS notice, open orders were to be removed when trading stopped. Settlement of the perpetual contracts was scheduled to begin at 09:00 UTC on 21 May, 4 days and 18 hours before spot trading stopped at 03:00 UTC on 26 May. The margin closure had its own deadline, 10:00 UTC on 21 May. Flexible and locked earn positions were to be redeemed to spot accounts after 03:00 UTC on 23 May, with resubscription into the new token arranged under the notice's allocation rules after the swap. So skim the notice for the product names you actually use. A spot-only holder can ignore most of it; a futures user cannot.

A different exchange

Support is decided venue by venue. One exchange converting your balance tells you nothing about whether another exchange will, on which date, or at all. Look for that venue's own notice; if there isn't one yet, “not announced” is the honest status.

A self-custody wallet

The exchange notice does not cover you. The project's official documentation does. Some migrations deliver new tokens to the same address automatically, some require a claim or bridge transaction, and some expect holders to route through a supporting exchange. Which of these applies is a project decision, and it should be stated on a domain the project controls.

In transit

A deposit you started just before the cutoff is the case with the least room for error. The EOS notice asked users to allow “sufficient time” for deposits to be fully processed before suspension. A transaction confirmed on-chain but not yet credited to your account is not the same as a credited balance.

The sequence inside a swap notice

A swap notice usually walks through steps in order. The EOS to Vaulta notice is a clean example because each step had its own timestamp:

1. Trading removed. Existing EOS spot pairs were to be removed at 03:00 UTC on 26 May 2025.
2. Deposits and withdrawals suspended. Thirty minutes later, at 03:30 UTC.
3. Conversion. Balances were to be swapped at 1 EOS = 1 A inside the platform, with no action requested from holders.
4. New token opens. Deposits of A were scheduled from 07:00 UTC on 28 May, with A trading pairs from 08:00 UTC.

Between step 2 and step 4 your balance can look frozen, or show neither ticker clearly. That gap is expected when the notice has already described it. It becomes worth following up only if the stated opening time passes with no update — the same test we use for withdrawal pauses.

The detail people miss is that the deposit cutoff is usually earlier than the conversion and much earlier than the reopening. If you plan to move tokens onto the exchange for the swap, the cutoff is your deadline. The reopening date is not.

When the ratio is not 1:1

MANTRA's conversion was 1 OM = 4 MANTRA. A holder with 1,000 OM would expect 4,000 MANTRA. The per-unit price should, if the market follows the ratio, sit near a quarter of the old unit price.

This is where charts mislead. A price tracker that stitches the old ticker to the new one without adjusting history can show what looks like a collapse on conversion day. Before reacting to that picture, multiply: new units × new price against old units × old price. If the two are close, the chart shows a unit change, not a loss.

We prefer to check the ratio in the exchange's own completion notice rather than on a data aggregator. Aggregators are useful, but they are the ones that have to re-map the history, and the completion notice is the document that states what was actually applied.

Tokens that arrive after the swap

After the EOS event, Binance said withdrawals of EOS tokens “will no longer be supported.” The old token stops being a thing that exchange moves.

Late arrivals are handled differently case by case. For OM, Binance's completion notice described a way to deposit old OM on BEP20 and convert it through Convert at 1:4 — and in the same notice warned that deposits and conversion of old OM “may be stopped without prior notice.” That is a courtesy route, not a promise. Nobody should plan around it existing next month.

Two practical consequences. First, if you still hold old tokens in a wallet, find out now which route the project and the exchange currently support, instead of assuming a late window exists. Second, check the network. A late-conversion route that names one network does not accept the same ticker on another.

Swap links you did not ask for

A publicized swap is an easy hook for fake “migration portals”. They ask you to connect a wallet and approve a transaction to receive new tokens, and the approval hands over what you already have.

• If your tokens are on an exchange that says it handles the swap, there is no link to click. Anything asking you to act is not part of that process.
• If you self-custody, reach the project's instructions by typing its known domain or following a link from the exchange's own notice, not from a reply, direct message or search ad.
• A genuine migration tells you which contract you receive. Compare it with the address the project publishes before approving anything.

Our own rule for holders on an exchange is simple: do not withdraw tokens just to “do the swap yourself.” It adds a network step, a deadline and an approval to an event that was already being handled for you.

Questions that settle it

1. Is the event a rebrand, a redenomination, a contract migration, a network move — or which mix?
2. Are your tokens on this exchange, another exchange, a wallet, or still in transit?
3. Which cutoff affects you: trading removal, deposit suspension, or a product-specific one?
4. What does one old token become, and does the completion notice confirm it?
5. Is there a late route, which network does it accept, and does the notice reserve the right to end it?

If the answers are “spot balance here, no pending deposits, ratio confirmed”, the correct action is to wait for the reopening time. For the vocabulary around these notices, the acronym decoder helps, and the network upgrade guide covers the case where a chain changes but no token swap is involved.

2 October 2026 clarification: the summary distinguishes supported spot holdings from incoming deposits, wallet holdings and other products. The dated swap examples are unchanged.