ECX Bitcoin fork on October 30: what investors need to know before the snapshot

The documented position: anyone holding their own bitcoin keys at the end of October will be credited the coin from the ECX split without having to do anything. Anyone whose bitcoin sits at an exchange will receive it only if that firm supports the fork and passes the credit on to its customers. The cut-off is not a calendar date but a fixed counter in the Bitcoin blockchain: block height 973,728. By our calculation that falls on October 30, 2026; the project's own roadmap names October 31. Your Bitcoin is neither moved, locked nor altered in the process. Our own assessment follows in a separate section below.

A fork is the split of a new blockchain from an existing one: from a set point onwards, two networks carry the same history forward separately. The snapshot is the moment the new blockchain reads the balances of the old one and adopts them as its opening credit. For Bitcoin that means whatever sits on an address at the cut-off determines how much ECX is assigned to that address. The mechanics have been known for months, and we described them on September 2 in our timeline for the ECX split. What has remained unanswered is the question that counts before the cut-off: will your bitcoin be in the right place on October 30?

What the ECX snapshot does, and what it does not do

No transfer takes place at the snapshot. The ECX blockchain starts with a copy of Bitcoin balances and as a rule credits each address with as much ECX as there is BTC sitting on it. A balance of 0.3 BTC yields 0.3 ECX. The bitcoin itself is untouched: no lock, no waiting period, no transaction for you to confirm. The news site news.bitcoin.com summarises the distribution key in its overview of the ECX split from August 23 by saying that virtually every BTC holder receives ECX at a ratio of one to one.

What does not happen matters just as much. There is no registration, no form and no address you need to send anything to. Any request to send bitcoin to an unfamiliar address before the snapshot in order to "claim" ECX is an attempted fraud. The same goes for sites that ask for your recovery phrase, the sequence of words that restores a wallet in full. Enter those words and you lose your balance, and that means the real one, not the forked one.

Block height 973,728 instead of a calendar date: why the day can still shift

Block height is the running number of the most recent block in a blockchain. Bitcoin advances one block every ten minutes on average, but only on average: if the machines on the network find a valid solution faster, the counter moves ahead faster, and with weaker computing power it moves more slowly. On Wednesday morning the Bitcoin blockchain stood at block 972,429. That left 1,299 blocks to the 973,728 mark, a little over nine days by the arithmetic. That produces October 30, roughly around midday, with about a day of leeway in either direction.

The project's own roadmap names October 31, the 18th anniversary of the Bitcoin white paper. Another reading considers November 1 more likely, because the stages of the roadmap line up with the boundaries of the difficulty periods, the stretches of 2,016 blocks after which Bitcoin readjusts its computational task. That spread cannot be resolved, and that is precisely why it is stated here: rely on October 31 and, if block height climbs faster than expected, you arrive a day late. In practice, that means settling the matter before the weekend of October 24 rather than on the final day.

The claim rests on the private key

What decides the issue is not who owns the bitcoin in economic terms but who controls the private key at the moment of the snapshot. The private key is the secret number that moves a balance held on an address; whoever holds it controls the coins. Self-custody means that this key sits with you alone, on a hardware wallet or as a recovery phrase on paper or metal. At the cut-off the new blockchain knows only addresses and amounts, no customer accounts and no names.

Bitcoin at an exchange: the custodian makes the decision

If your bitcoin sits in an exchange account, the exchange holds the keys. The ECX credit therefore arises not on your address but on the firm's pooled address. In its overview, news.bitcoin.com puts it this way: the exchange holds the keys and therefore has effective control of the forked ECX, while customers depend on its decision when it comes to distribution. Whether and when a credit reaches you is thus a question of company policy, not of your balance.

That is the norm with splits and no reproach to the trading venues: a fork brings technical obligations with it, from separating the networks to booking the entries to the question of whether a market for the new coin emerges at all. Firms that pass a split on usually do so weeks later and after a review of their own. If you want a credit with certainty, you settle the question beforehand by moving your holdings into your own custody. For an overview of the devices commonly used for that, see our hardware wallet comparison.

What trading venues have actually committed to

No public commitments by major trading venues to pass ECX on to customers were known as of October 21. The only documented evidence so far is a snapshot from Japan: ahead of the test phase launching in August, the exchanges GMO Coin, Coincheck, SBI VC Trade and Zaif stated that bitcoin trading would continue unchanged, while expressly reserving the right to make later changes. GMO Coin made clear that it would handle neither the practice coin nor ECX during the test and preliminary stages; the other three firms left credits, listing and treatment open. CryptoSlate reports this in its survey of the fork's unresolved questions.

For holders, that means above all that there is currently no commitment you could rely on. If you want clarity, ask your own provider directly, ideally in writing through customer support, and keep the answer. If none arrives, self-custody remains the only route that places the claim squarely on your own address. Which trading venues are licensed in Europe, and how they differ on fees and withdrawals, is set out in our exchange comparison.

Self-custody brings risks of its own

Moving into your own custody is not a rescue operation but a decision about the fork claim, and it trades one risk for another. Instead of an exchange's default risk you then carry the risk of losing access yourself: a misplaced recovery phrase, a faulty device with no backup, a fire. Lost keys cannot be reset with Bitcoin; there is no hotline and no recovery procedure. If you have never self-custodied before, do not start the move on the evening before the cut-off.

An orderly sequence makes sense: first send a small amount and check that it arrives, then back up the recovery phrase in two separate places, and only then move the rest. Also budget for network fees, which can rise sharply when blocks are full, and do not plan the move for the final hours before the target mark. We put together the basics and the pitfalls of a split in August in our explainer on the Bitcoin fork and securing your coins.

Replay protection and finished software are still missing

The ECX fork is not technically complete. CryptoSlate notes that neither the final fork hash nor the final procedure for replay protection has been published. Replay protection is the mechanism that stops a transaction from one blockchain inadvertently becoming valid on the other as well. The project's integration guide was last online with preliminary parameters from the test phase and pointed developers to check the final procedure before launch. The software for production use had also not been named in a final version as of publication.

Layertwo Labs is behind ECX, and one to one does not apply to everyone

The project comes from Layertwo Labs around developer Paul Sztorc, known for his work on drivechains and for proposals BIP 300 and 301. ECX uses the same mining algorithm as Bitcoin and resets difficulty to the minimum value at launch. The roadmap provides for three stages: an alpha stage from block height 963,648, a beta stage from 967,680 and the launch proper from 973,728. Practice coins circulate during the first two stages, and they are expressly not the final coins.

The one-to-one allocation has one documented exception. Around 1.1 million early-mined bitcoin attributed to Bitcoin's inventor through a recurring mining pattern are excluded from the normal distribution: roughly 600,000 ECX remain assigned to those addresses, and around 500,000 ECX go to early backers and into development, according to the project. One other distinction matters: this project has nothing to do with the similarly named cryptocurrency eCash and its ticker XEC. None of this supports any statement about a future ECX price, and we make none here.

For tax, a fork turns on the purchase date of your bitcoin

An allocation from a split does not in itself trigger tax on privately held assets. It only becomes interesting when the new units are sold. And there a rule applies that many investors have the wrong way round: under the German finance ministry's circular on the income tax treatment of crypto assets dated March 6, 2025, the acquisition date of the new crypto assets matches that of the original ones. The one-year holding period for a private disposal under section 23 of the German Income Tax Act therefore runs for the fork coin from the day you bought the bitcoin, not from the day of the split.

Anyone holding bitcoin for more than a year would accordingly also have an ECX position arising from it outside the period. The tax office splits the acquisition cost between the old and the new unit in proportion to market prices at the time of the split. That sounds simple but becomes awkward in practice when no reliable price for the new coin exists on that day at all. That case is likely with ECX, because a market still has to form. So record when and at what price you bought, and when the allocation reached you. Tools that log such events automatically can be found in our comparison of tax and portfolio tools. For an assessment of your individual case, a tax adviser remains responsible.

Our assessment of the ECX date

Our assessment: the deadline is real, the cause for excitement is not. Three documented points support that. First, the target mark is fixed while the date fluctuates, and block height was 1,299 blocks below it on Wednesday morning. Second, CryptoSlate notes that replay protection and production software have not been finally published, which makes a delay possible. Third, there is still no public commitment from the major trading venues to pass ECX on. As a result, anyone who wants the claim for certain should shift custody in good time; anyone already self-custodying need do nothing at all.

Against that, a new fork coin rarely has a reliable price in its first weeks, and the effort of a rushed move can outweigh the value received. A split is not free money but a by-product with an open outcome, and a total loss of the new asset is possible at any time. No recommendation to buy or sell bitcoin or ECX follows from this date.

ECX snapshot: after block height 973,728 the custodian alone decides

The cut-off is around nine days away, and after that nothing about the allocation can be changed. Three steps are enough:

1. Establish where custody sits. Check whether your bitcoin is in an exchange account or on an address of your own. If it is on your own address, the matter is settled. The forms of self-custody and where their weaknesses lie are set out in our software wallet comparison.
2. Ask your provider. Write to your trading venue's customer support and get it in writing whether ECX will be credited. If no clear answer comes, the move into self-custody remains. Which firms hold a licence in Europe is shown in our overview of regulated crypto exchanges.
3. Secure your records. Note the purchase date, the purchase price and the time of any later allocation, so the one-year period can be evidenced afterwards. A tool from the tax tool comparison takes the logging off your hands.

(As of October 21, 2026. This article is not investment advice. Prices and fee structures change; check the terms with the provider before you buy.)