I’m working on a gaming project where players receive starter NFTs at no cost. Now I want to create a system where minting additional game NFTs requires players to already own one of these starter tokens.
What’s the best way to set up this kind of ownership verification? Should I build the ownership check directly into the smart contract logic, or would it be better to handle this through an external API that verifies ownership before allowing the minting function to execute?
I’m still learning blockchain development, so any code examples showing how to implement ownership-based minting restrictions would be really helpful. Also wondering if this approach works for checking ownership of entire collections rather than just specific tokens.
That’s a cool setup! Got a few questions though.
What happens if someone sells their starter NFT after minting items? Do they lose minting rights or does the system still recognize them?
Gas costs could be brutal if you’re checking ownership every mint. Multiple items in one session would get expensive fast. Maybe add batch minting?
Also, what if someone owns multiple starter NFTs? Extra minting limits or cheaper costs? Could be a nice way to get people collecting more starters.
You going multi-chain or staying on one network? Just wondering how ownership checks would work across different blockchains.
Built something like this last year - smart contracts are the way to go. I used balanceOf() for collection-wide checks instead of tracking specific token IDs, worked great. Pro tip: cache ownership results within the same transaction block if users might mint multiple items. Saves a ton on gas.
Yeah, it works for collections. I set up a modifier checking if balanceOf(msg.sender) > 0 for the starter collection address. Way cleaner than tracking individual tokens, plus players can trade their starters and keep minting privileges as long as they hold at least one.
Watch out for edge cases though - like someone transferring their starter mid-transaction. Reentrancy guard fixed most of the timing issues I hit during testing.
i agree, smart contract logic is the way to go. using ownerOf() is best for checking ownership directly. external APIs could lead to issues, so keep it on-chain for security. this way, minting is smooth n secure!