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
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.
NFT trading is a fraction of its 2022 peak, but the primitive found real uses: memberships, gaming, tokenized real-world assets, identity, and domains.
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.
Wallet drainer kits, signature phishing, Discord hijacks, and address poisoning have industrialized NFT theft. Here is how the attacks work and how to defend.
OpenSea, Blur, and Magic Eden all sell NFTs, but they serve different traders on different chains. Here is how to pick the right one.
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.
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.
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.
A practical, advanced guide to storing Bitcoin in Zelcore: BIP-84 addresses, UTXO hygiene, fee tiers, Lightning split, and a risk checklist that ties the whole series together.
An automated market maker uses a simple formula, x times y equals k, to price every trade. Here is what that means, with $100 examples.
Before you swap, lend, or farm anything, you need to understand the three primitives every DeFi interaction depends on: your wallet, gas, and token approvals.
DeFi replaces banks and brokers with public smart contracts. Here is what that actually means, mechanically, and why one change cascades into everything else.
A step-by-step framework for deciding where your assets actually live: thresholds for hot vs cold, when a passphrase or multi-sig layer is worth it, inheritance planning, and concrete example allocations.
A practical catalogue of the top attacks on self-custody users — address poisoning, clipboard malware, fake wallet apps, and SIM swaps — with concrete mitigations for each.
How BIP-39 passphrases create a fully separate hidden wallet, why they're the strongest defence against physical seed-phrase theft, the brutal failure modes, and when this is genuinely worth the risk.
A clear-eyed threat model: what a secure element defends against, what it doesn't, and how to build self-custody habits that don't depend on false confidence.
Why a single BIP-32/44 seed unlocks accounts across Bitcoin, Ethereum, Solana, and 80+ other chains in Zelcore — and the practical implications for address reuse, chain-specific metadata, and protecting your one point of failure.
Beyond the basics: how BIP-39 encodes entropy, how PBKDF2 and BIP-32/44 derive every key, what survives a device reset, and the recovery failure modes nobody warns you about.
DeFi lending explained with a worked example: deposit collateral, borrow against it, watch the health factor, and understand how liquidations actually fire.
Three stablecoins labelled $1 can rest on wildly different foundations. Learn how fiat-backed, crypto-backed, and algorithmic designs actually work — and fail.
Impermanent loss is the hidden cost of being an AMM liquidity provider. Here's the math, a reference table, and a checklist to decide if the fees are worth it.
Smart contracts are sealed from the outside world by design. Oracles are the signed conduits that pipe prices in — and the single point where DeFi most often breaks.
DeFi's composability lets protocols stack like Lego, but it also means one oracle glitch or depeg can cascade across lending, AMMs, and stablecoins in minutes.
Bitcoin's halving cuts the block subsidy every 210,000 blocks, enforcing a hard 21 million cap. Here is the schedule, the math, and why it matters.
Bitcoin has no account balances. It tracks unspent outputs (UTXOs) like coins in a purse. Here is how the model works, why it exists, and what it means for you.
How Bitcoin transaction fees work: weight units, the SegWit witness discount, address types, mempool dynamics, RBF, CPFP, and why fees spike.
How Lightning turns Bitcoin into a payment network: 2-of-2 channels, HTLC routing, liquidity, Taproot channels, splicing, LSPs, and honest trade-offs.
Why Bitcoin's ~900 EH/s hashrate makes 51% attacks economically irrational, what smaller chains like BTG, ETC, and BSV teach us, and how to pick a safe confirmation depth.
Unpacks the difference between an IOU balance on an exchange and actual on-chain ownership, using concrete failures (FTX, Mt. Gox) to show what 'custodial' means in practice.
Crypto scams cost Americans $11.3 billion in 2025 alone — but most attacks follow predictable patterns. Learn to spot them and build the habits that keep your funds out of reach.
How a 12 or 24-word seed phrase deterministically derives every private key in your wallet, why losing it means losing your crypto forever, and how to store it safely.
What transaction fees actually pay for, why they spike during congestion, and how to use a fee estimator to avoid overpaying on Bitcoin and Ethereum.
Traces a single send from the moment you hit confirm through signing, broadcast, the mempool, block inclusion, and final confirmation — so you understand why it takes time and why fees exist.
Most people assume a crypto wallet holds their coins. It doesn't. Here's what a wallet actually stores — and why that distinction changes everything about how you protect your funds.
Demystifies asymmetric cryptography with a padlock-and-key analogy so readers understand why a public address is safe to share but a private key must never leave their control.
Clarifies the often-confused distinction between native coins (like BTC or ETH) and tokens issued on top of an existing chain, with practical examples and real-world implications.
Explains what a node is, why thousands of them independently store the same data, and why that redundancy makes the network resistant to shutdown or manipulation.
Walks through exactly what data lives inside a block, why each block references the one before it via a cryptographic hash, and why tampering with one block would visibly break the entire chain.
Strips away the hype to explain a blockchain as a shared ledger that no single party controls, using a simple analogy of a public notice board that everyone can read but no one can secretly erase.
Software wallets are convenient, but hardware wallets keep your keys offline where malware can't reach them. Here's what that actually means.