Home Ethereum Altair Mainnet Announcement | Ethereum Basis Weblog

Altair Mainnet Announcement | Ethereum Basis Weblog

Altair Mainnet Announcement | Ethereum Basis Weblog


The Altair beacon chain improve is able to be activated on the Ethereum mainnet. The improve will go stay at epoch 74240 (Oct 27, 2021, 10:56:23am UTC).

Consumer Variations

With a purpose to be appropriate with the Altair improve, beacon node operators should replace the consumer model that they run. If you happen to run a validator, you should improve to proceed to comply with the mainnet beacon chain. Failure to take action will lead to downtime penalties.

The variations listed beneath are help the mainnet Altair improve.

EDIT: The next desk has been edited to reference the most recent Altair consumer releases previous to the mainnet improve. These comprise safety patches and optimizations so we suggest all customers improve to the most recent variations.

* Consumer releases referenced with an asterisk have been modified because the authentic announcement.

Improve for Validators

Though this improve has been extensively examined in case you are a validator on Mainnet, we strongly suggest being on-line in the course of the time of the improve within the occasion that any unforseen points emerge.

Bug Bounty Bonus

With a purpose to get extra eyes on the Altair improve, all bounties for vulnerabilities associated to the Altair improve have been doubled between now and 4 weeks after the launch (Nov 27). Essential Altair bugs in each purchasers and specs at the moment are value as much as $100k.

See the bug bounty program for extra particulars.


As an Ethereum consumer or Ether holder, is there something I have to do?

This improve is solely for the beacon chain consensus mechanism and does not have an effect on end-user accounts, contracts, and state secured by the proof-of-work chain.

If you happen to run your individual beacon node, you have to improve your node. See the “As a non-validator beacon node operator, what do I have to do?”” part beneath.

As a non-validator beacon node operator, what do I have to do?

Obtain the most recent model of your beacon node consumer, as listed within the desk above.

As a validator, what do I have to do?

Obtain the most recent model of the software program you run, as listed within the desk above. Comply with any directions within the launch and restart your node together with your normal restart process.

Notice, node software program that helps impartial validator purchasers would require an improve and restart to this element as properly. Please learn warnings and directions contained within the official releases.

What occurs if I’m a validator or node operator and I don’t take part within the improve?

If you’re utilizing a beacon node consumer that isn’t up to date to the most recent model (listed above), your consumer will sync to the pre-fork beacon chain as soon as the improve happens. You’ll be caught on an incompatible chain following the previous guidelines.

If you happen to run a validator, the validator will probably be unable to take part within the upgraded consensus and can proceed to function on the post-upgrade beacon chain community. This may lead to penalties with respect to the upgraded Mainnet chain.

What occurs throughout a beacon chain community improve?

After the Ethereum neighborhood involves an settlement regarding which modifications must be included within the improve, modifications to the protocol are written into the varied purchasers. The beacon chain protocol modifications are activated at a particular epoch quantity. Any nodes that haven’t been upgraded to the brand new ruleset will probably be deserted on the previous chain the place the earlier guidelines might live on.

Why “Altair”?

After neighborhood dialogue and emoji voting, consumer groups determined to make use of star names for every improve the place the sequence of improve names are in alphabetical order.

Altair begins with a “A”, is the twelfth brightest star within the night time sky, rotates fairly quickly with an equatorial velocity of 286 km/s, and is the placement of the Forbidden Planet. Fairly cool star in the event you ask us.


Enormous shoutout to the entire researchers, engineers, and neighborhood members which have put an unbelievable quantity of labor into this primary beacon chain community improve.

Now, onward to the Merge 🚀


That is an emergent and evolving extremely technical house. If you happen to select to implement the suggestions on this publish and proceed to take part, you must ensure you perceive the way it impacts you. It’s best to perceive that there are dangers concerned together with however not restricted to dangers like sudden bugs. By selecting to implement these suggestions, you alone assume the dangers of the results. This publish and suggestions are usually not a sale of any sort, and don’t create any warranties of any sort together with however not restricted to something associated to the Ethereum community, or the Ethereum purchasers referred to herein.



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