If you hold Proud Lions Club or GUI LIONS NFTs on Aptos, you can claim Ethernal Cubs whitelist spots by signing one free message in Petra on the whitelist board. Nothing bridges, nothing is sold, and the spots land on top of anything you earn from tasks.
This guide walks through the claim step by step, explains how many spots a holding is worth, and covers the two problems holders actually run into: keyless logins that cannot sign, and Petra holding an old connection. Everything here was checked against the live board and the Aptos chain on 10 October 2026. For every other route onto the list, see every way to earn a free mint spot.
Why Aptos holders get spots at all
Ethernal Cubs is made by Proud Lion Studios, the same studio behind Proud Lions Club and GUI LIONS. Both collections live on Aptos today. Ethernal Cubs is a new game with customizable, AI ready characters, and it mints on Robinhood Chain, an Ethereum layer 2. Rather than leave the existing community behind on another chain, the whitelist reads what your Aptos wallet held and turns it into spots on the new list.
Your Lions stay exactly where they are. The claim only proves that a wallet is yours. It does not move, lock, burn or list anything.
Check that you hold the real collections
Collection names are not unique on Aptos. There are copycat collections named exactly "Proud Lions Club" and "GUI LIONS" from other creators, so the board never trusts a name. It checks the on-chain collection ID. These are the two that count, as read from the Aptos indexer on 10 October 2026:
If a marketplace shows you a Lion whose collection ID does not match, it will not earn a spot, whatever the name says.
How many spots your Lions are worth
The rule shown on the board is short:
- One spot for holding either collection at all.
- Plus one spot for every 2 Proud Lions in the wallet.
- Plus one spot for every 3 GUI LIONS in the wallet.
- Up to 30 spots in total for one person, however many wallets they verify.
Some worked examples, using that rule for a single wallet:
Each spot is one sealed Orb you can mint on the day. The cap exists because the drop is 3,333 Orbs in total, and without it a handful of large holders would have taken a big share of the whole list before anyone else had a chance.
The snapshot: why buying more now changes nothing
Holdings are counted from a snapshot that has already been taken, not from what your wallet holds today. So:
- Buying more Lions now will not add spots.
- Selling Lions now will not take spots away.
- Lions that were listed for sale at the snapshot still count for the wallet that owned them.
- Each NFT counts once. If you verify one wallet, move the Lions to a second wallet and verify that too, the second check finds them already counted and adds nothing.
That last point matters if your Lions are spread across several wallets. Verify each wallet that held them at the snapshot. Every wallet adds its own spots, until you reach the cap of 30.
Step by step: claiming on the board
- Go to ethernalcubs.icu and open the whitelist board.
- Sign in with the Ethereum wallet you will mint from, such as MetaMask. Spots are credited to that address, so the board will not start the Aptos check until it is linked.
- Open the Aptos holders section. You do not need to connect X first: the board lets holders verify without it.
- Tap Continue with Petra. On a computer this uses the Petra browser extension. On a phone it opens the Petra app and brings you back.
- Petra asks you to sign a message. It names your Aptos address and the Ethernal Cubs site. Approve it.
- The board checks the signature and shows how many Proud Lions and GUI LIONS it counted, and how many spots that earned. Your verified wallet appears in a list with its spot count.
- Hold Lions in another wallet? Switch accounts in Petra and repeat. Each wallet is verified separately.
If you have not set up your Ethereum side yet, read which wallets work with Robinhood Chain first. You only need it ready to sign in now. ETH for gas matters on mint day, not today.
Is signing a message safe?
Being careful here is right. "Sign this message" is also what wallet drainers ask for, so it is worth knowing exactly what this one does.
- It is a signature, not a transaction. It moves nothing and costs no gas.
- It proves you control the Aptos wallet. Without it, anyone could type in a big holder's public address and take their spots.
- The signed text includes a one time code from the server, your Aptos address and the site name, so the signature cannot be reused anywhere else.
- Start the claim from the board yourself. The team never DMs first, and nobody from Ethernal Cubs will send you a link to sign.
Why keyless and social logins cannot sign
Some Aptos accounts are created by logging in with Google or another social account instead of a seed phrase. These keyless accounts cannot produce the kind of signature the board checks. If you see "That wallet cannot sign", connect the wallet that actually holds your Lions, one with its own private key, such as a standard Petra account.
A different message, "No account from that wallet", usually means the wallet is locked or never shared an account. Unlock Petra or reconnect it, and try again before switching wallets.
When Petra does not send you back
The most common phone problem is Petra saying "Encryption key does not match" and staying on its own screen. That means Petra is holding an old link to the site. The board notices when you come back empty handed and offers a one tap fix. If that does not clear it, open Petra, go to Settings, then Connected apps, remove Ethernal Cubs, come back and tap Continue with Petra again.
If you cancel the signature by accident, nothing breaks. The board tells you the wallet did not sign, and you can tap Sign and verify again.
Dates holders should know
Verify before the board closes. The allowlist is built from the board, so a wallet you have not verified by then does not add spots. On mint day you mint from the Ethereum wallet you signed in with, on Robinhood Chain, with a little ETH for gas. The Orb is free.
Frequently asked questions
Do I need to bridge my Lions to Robinhood Chain?
No. Nothing bridges. Your Lions stay on Aptos, and the Orb mints on Robinhood Chain to your Ethereum wallet.
Do holder spots stack with task spots?
Yes. Holder spots come on top of anything you earn from tasks, quizzes, games or partner collections on the board.
I bought my first Lion this week. Does it count?
Only if it was in your wallet at the snapshot, which has already been taken. A wallet with no Lions at the snapshot still verifies, and it can still count for partner collections, but it earns no holder spots.
Can I use a wallet other than Petra?
The board is built around Petra, because that is where these collections are held. Whatever you use, it must be a wallet with its own key that can sign messages.
Lions holders were the first community behind Proud Lion Studios, and Ethernal Cubs is the next game from the same team: Cubs you build and customize, a game to play them in, and an AI companion that will come later. Claim your spots before Wednesday 28 October at ethernalcubs.icu.