Field notes
Blog
Long reads on the free mint, the parts economy, and what it is actually like to build a game on Robinhood Chain.
Start here: Ethernal Cubs guides
New to the project? These guides explain the collection, mint preparation and official destinations.
·6 min read
Proud Lions Club and GUI LIONS: Claim Your Ethernal Cubs Spots
Hold Proud Lions Club or GUI LIONS on Aptos? One free Petra signature claims Ethernal Cubs whitelist spots. The rules, the cap and the fixes.
Read the article·7 min read
Robinhood Chain Wallet: Which Wallets Work, Checked October 2026
Robinhood Wallet, MetaMask, Rabby and Trust Wallet all support Robinhood Chain. What each one can and cannot do, including NFTs, checked 9 October 2026.
Read the article·7 min read
Robinhood Chain USDC: Why the Real Stablecoin Is USDG
There is no native Circle USDC on Robinhood Chain. The real dollar stablecoin is USDG at 0x5fc5...d168, and dozens of look-alikes exist. How to check any token.
Read the article·6 min read
Why NFTs Get Boring, and How Ethernal Cubs Makes Them Fun Again
Most NFTs sit untouched in a wallet. Here is why, and how Ethernal Cubs plans to fix it with a builder, games, cartoons, toys and a fragrance of your own.
Read the article·7 min read
OpenSea Allowlist Mint: What It Means and How It Works
An OpenSea allowlist mint lets only pre-approved wallet addresses mint during a stage. How the list is built, enforced on-chain, and what to do on mint day.
Read the article·7 min read
Ethernal Cubs Galxe Quest: Step by Step Guide to a Free Spot
How the Ethernal Cubs Galxe quest works: the two tasks, the site check behind Verify, 1,000 first come spots, and what to do if Galxe will not verify you.
Read the article·7 min read
How to Spot a Fake NFT Collection on OpenSea: 5 Checks
A fake NFT collection on OpenSea copies the name and logo but never the contract address. Five checks that catch one, plus a real case from September 2026.
Read the article·6 min read
Robinhood Chain Gas Fees: What a Mint Actually Costs
Robinhood Chain gas fees measured on 3 October 2026: 0.028 gwei, so a typical NFT mint costs about 1 cent in ETH. The full arithmetic, shown.
Read the article·7 min read
How to Bridge ETH to Robinhood Chain: Routes, Times and Fees
Bridge ETH to Robinhood Chain with MetaMask's Swap button, the official Arbitrum bridge (10 minutes in, 7 days out) or a card. Fees checked 2 October 2026.
Read the article·6 min read
How to Add Robinhood Chain to MetaMask (Chain ID 4663)
Add Robinhood Chain to MetaMask in one click or by hand: chain ID 4663, the official RPC URL, ETH for gas, the explorer, and fixes for common errors.
Read the article·5 min read
Ethernal Cubs Whitelist: Every Way to Earn a Free Mint Spot
Four routes onto the Ethernal Cubs whitelist plus a 1,500 spot Galxe quest: what each asks of you, which wallet to use, and the 28 October deadline.
Read the article·6 min read
How to Mint an NFT on Robinhood Chain: A Step by Step Guide for Buyers
Add Robinhood Chain to your wallet, bridge ETH onto it, find a mint on OpenSea and check what you got. Every step verified on 23 September 2026, with gas measured live on chain 4663.
Read the article·6 min read
Robinhood Chain Games: A Checked List of What You Can Play on Chain 4663 (September 2026)
Every game we could confirm on Robinhood Chain, checked by hand on 22 September 2026: what each one is, how it plays, its token if it has one, and how we verified it runs on chain 4663.
Read the article·6 min read
What Is a Composable NFT? Parts, Slots and Swapping, With a Working Example
A composable NFT is built from other tokens you can swap in and out. Here is how the standards work (ERC-998, EIP-6220, ERC-6551), what each one is good for, and a live example: an eight-slot Cub assembled from ERC-1155 parts on Robinhood Chain.
Read the article·7 min read
How the Ethernal Cubs Free Mint Works: 3,333 Orbs, Zero Cost, and How to Earn a Spot
Ethernal Cubs is a free mint of 3,333 Orbs on Robinhood Chain, opening 29 October 2026 at 14:00 UTC. Here is what an Orb contains, the real drop tables, and the exact point values that earn a whitelist spot.
Read the article·8 min read
What Is Robinhood Chain? An Honest Builder's Guide to the Arbitrum L2, and Why a Game Ships There
Robinhood Chain is a permissionless Ethereum L2 on the Arbitrum stack, chain ID 4663, live since 1 July 2026. Here are the verified specs, the real constraints, and the case for building a game on it.
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