The Altair beacon concatenation upgrade is acceptable to beryllium activated connected the Ethereum mainnet. The upgrade volition spell unrecorded astatine epoch 74240 (Oct 27, 2021, 10:56:23am UTC).

Client Versions

In bid to beryllium compatible with the Altair upgrade, beacon node operators must update the lawsuit mentation that they run. If you tally a validator, you must upgrade to proceed to travel the mainnet beacon chain. Failure to bash truthful volition effect successful downtime penalties.

The versions listed beneath are enactment the mainnet Altair upgrade.

EDIT: The pursuing array has been edited to notation the latest Altair lawsuit releases anterior to the mainnet upgrade. These incorporate information patches and optimizations truthful we urge *all users upgrade to the latest versions.*

* Client releases referenced with an asterisk person been changed since the archetypal announcement.

Upgrade for Validators

Although this upgrade has been extensively tested if you are a validator connected Mainnet, we powerfully urge being online during the clip of the upgrade successful the lawsuit that immoderate unforseen issues emerge.

Bug Bounty Bonus

In bid to get much eyes connected the Altair upgrade, each bounties for vulnerabilities related to the Altair upgrade person been doubled betwixt present and 4 weeks aft the motorboat (Nov 27). Critical Altair bugs successful some clients and specs are present worthy up to $100k.

See the bug bounty program for much details.

FAQ

As an Ethereum idiosyncratic oregon Ether holder, is determination thing I request to do?

This upgrade is purely for the beacon concatenation statement mechanics and does not impact end-user accounts, contracts, and authorities secured by the proof-of-work chain.

If you tally your ain beacon node, you request to upgrade your node. See the “As a non-validator beacon node operator, what bash I request to do?”” conception below.

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

Download the latest mentation of your beacon node client, arsenic listed successful the array above.

As a validator, what bash I request to do?

Download the latest mentation of the bundle you run, arsenic listed successful the array above. Follow immoderate instructions successful the merchandise and restart your node with your modular restart procedure.

Note, node bundle that supports autarkic validator clients volition necessitate an upgrade and restart to this constituent arsenic well. Please work warnings and instructions contained successful the authoritative releases.

What happens if I americium a validator oregon node relation and I bash not enactment successful the upgrade?

If you are utilizing a beacon node lawsuit that is not updated to the latest mentation (listed above), your lawsuit volition sync to the pre-fork beacon concatenation erstwhile the upgrade occurs. You volition beryllium stuck connected an incompatible concatenation pursuing the aged rules.

If you tally a validator, the validator volition beryllium incapable to enactment successful the upgraded statement and volition proceed to run connected the post-upgrade beacon concatenation network. This volition effect successful penalties with respect to the upgraded Mainnet chain.

What happens during a beacon concatenation web upgrade?

After the Ethereum assemblage comes to an statement concerning which changes should beryllium included successful the upgrade, changes to the protocol are written into the assorted clients. The beacon concatenation protocol changes are activated astatine a circumstantial epoch number. Any nodes that person not been upgraded to the caller ruleset volition beryllium abandoned connected the aged concatenation wherever the erstwhile rules whitethorn proceed to exist.

Why “Altair”?

After community discussion and emoji voting, lawsuit teams decided to usage prima names for each upgrade wherever the series of upgrade names are successful alphabetical order.

Altair starts with a “A”, is the twelfth brightest prima successful the nighttime sky, rotates rather rapidly with an equatorial velocity of 286 km/s, and is the determination of the Forbidden Planet. Pretty chill prima if you inquire us.

Thank you!

Huge shoutout to each of the researchers, engineers, and assemblage members that person enactment an unthinkable magnitude of enactment into this archetypal beacon concatenation web upgrade.

Now, onward to the Merge 🚀

Disclaimer

This is an emergent and evolving highly method space. If you take to instrumentality the recommendations successful this station and proceed to participate, you should marque definite you recognize however it impacts you. You should recognize that determination are risks progressive including but not constricted to risks similar unexpected bugs. By choosing to instrumentality these recommendations, you unsocial presume the risks of the consequences. This station and recommendations are not a merchantability of immoderate kind, and bash not make immoderate warranties of immoderate benignant including but not constricted to thing related to the Ethereum network, oregon the Ethereum clients referred to herein.