Zelcore

NFTs & On-Chain Ownership

Digital collectibles, royalties, and what "owning" an NFT really means.

An NFT is a record on a blockchain that says a specific token belongs to a specific address. That's it. The art, the music, the membership pass — those are things pointed to by the token. The ownership itself is a line in a public ledger that only the holder of the matching private key can move.

Which is exactly why custody matters for collectors. If your NFTs sit on an exchange or inside a custodial app, you don't actually own them — the platform does, and you have a claim. Lose access to the platform and you lose the collection. Zelcore's non-custodial approach means the keys are yours, the tokens live at addresses you control, and no middleman can freeze, delist, or rehypothecate what's yours.

This section is still being built out. Expect guides on connecting Zelcore to major marketplaces, storing NFTs safely across chains, understanding royalties and metadata, and managing collections without exposing your keys to every site that asks to sign.

After a Drain: Recovery, Reporting, and Damage Control

After a Drain: Recovery, Reporting, and Damage Control

Your NFT wallet was drained. Here is what to do in the next hour, how to build a paper trail, what recovery actually looks like, and the scam wave targeting victims days later.

9 min read
Drainer Kits in 2026: Anatomy and the Current Landscape

Drainer Kits in 2026: Anatomy and the Current Landscape

Crypto drainer kits have industrialised phishing into a franchise model. Learn the kit genealogy, DaaS economics, six UI/UX attack vectors, and what actually stops a drain.

11 min read
The setApprovalForAll Debt: Auditing and Revoking NFT Approvals

The setApprovalForAll Debt: Auditing and Revoking NFT Approvals

Every marketplace listing silently grants unlimited transfer authority over entire collections. Learn how to audit and revoke NFT approvals before an attacker uses them against you.

9 min read
Blind Signing: When Your Wallet Shows Hex

Blind Signing: When Your Wallet Shows Hex

Your hardware wallet's secure element is only useful if you can read what you're signing. Learn how blind signing works, what ERC-7730 fixes, and the rules for staying safe.

9 min read
Signature Types: What Each One Actually Lets an Attacker Do

Signature Types: What Each One Actually Lets an Attacker Do

eth_sign, personal_sign, and signTypedData_v4 each give attackers a different weapon. Learn what your wallet computes when you click Sign — and what it costs you if you're wrong.

4 min read
Should You Own NFTs in 2026?

Should You Own NFTs in 2026?

The capstone of NFTs 101: a framework for deciding when an NFT belongs in your crypto stack, which use cases make sense in 2026, and what to skip.

8 min read
Beyond Art: Utility, Gaming, and RWAs

Beyond Art: Utility, Gaming, and RWAs

NFT trading is a fraction of its 2022 peak, but the primitive found real uses: memberships, gaming, tokenized real-world assets, identity, and domains.

8 min read
Managing NFTs in a Multi-Chain Wallet

Managing NFTs in a Multi-Chain Wallet

A multi-chain wallet doesn't store NFTs — it derives keys per chain and relies on indexers to find them. Here's why that distinction matters in practice.

7 min read
NFT Scams and Wallet Drainers

NFT Scams and Wallet Drainers

Wallet drainer kits, signature phishing, Discord hijacks, and address poisoning have industrialized NFT theft. Here is how the attacks work and how to defend.

10 min read
Marketplaces Compared: OpenSea, Blur, Magic Eden

Marketplaces Compared: OpenSea, Blur, Magic Eden

OpenSea, Blur, and Magic Eden all sell NFTs, but they serve different traders on different chains. Here is how to pick the right one.

9 min read
Minting Explained

Minting Explained

Minting an NFT is a specific smart-contract state change — a new row in an ownership map, an event from the zero address, and a very specific gas bill.

8 min read
Where Your NFT Actually Lives

Where Your NFT Actually Lives

An NFT is a token on-chain, but the picture almost always lives somewhere else. Here's how that hand-off works — and when it breaks.

7 min read
What Is an NFT, Really?

What Is an NFT, Really?

An NFT isn't a picture — it's a unique, uncopyable entry in a blockchain ledger. Here's how that simple idea explains everything else.

8 min read
    NFTs & On-Chain Ownership | Zelcore Academy