Follow a series from start to finish — each path is designed to take you from beginner to confident.
Tokenised real-world assets crossed $21B TVL in Q1 2026 — a self-custody field guide to BUIDL, Ondo, Franklin, Centrifuge, Maple, tokenised stocks, legal wrappers, redemption mechanics, and tax.
6 parts · defi
What Pectra (May 2025) and Fusaka (Dec 2025) actually shipped, what Glamsterdam adds in 2026, and the long-tail upgrades — SSF, Verkle, EOF — that complete Ethereum's endgame.
4 parts · coin-guides
How Bitcoin's second-layer ecosystem grew up in 2025-2026 — BitVM2, Citrea, Stacks Nakamoto, sBTC, Babylon, Rootstock, Alpen, and the trust models behind every BTC peg.
5 parts · coin-guides
A five-part series on ERC-4337 and EIP-7702 for self-custody users — what a smart account is, how bundlers and paymasters work, why EIP-7702 changes EOA risk, and how Coinbase Smart Wallet, Safe, and Argent compare.
5 parts · security
A five-part guide to stablecoins after the GENIUS Act: how regulated USDC/USAT/PYUSD/RLUSD compare to offshore USDT, why DAI became USDS, how to choose a chain, and how to spot a de-peg before it lands.
5 parts · basics
A practical four-part companion to DeFi from First Principles: how Zelcore — a non-custodial multi-chain wallet — actually works as a DeFi entry point. Swapping with Fusion, staking and yield, hardware-wallet and SSP multisig for DeFi, and an honest look at what Zelcore does not do.
4 parts · defi
Litecoin and the chains it inspired or shares lineage with: LTC, DOGE, BCH, and the privacy coins ZEC and XMR. An honest coin-guide pass — what each chain does, why it still exists, and what holding it looks like in 2026.
4 parts · coin-guides
A self-custody holder's tour of the regulations actually in force in 2026: MiCA year two, the US stablecoin framework, SEC/CFTC jurisdictional lines, the global licensing map, and the travel rule in practice.
5 parts · news-explained
What changed, what's uncertain, and how to file right when your wallets are self-custodied. A working guide for the 2025 tax year through the 2026 filing season.
4 parts · how-to
A deep-dive into how NFT wallets actually get drained — signature types, blind signing, approval hygiene, drainer-kit anatomy, and what to do after it happens.
5 parts · nft
A power-user tour of Zelcore's advanced capabilities: multi-device sync, hardware-wallet pairing, custom RPCs, portfolio tracking, tax exports, and the pro features most users never find.
6 parts · how-to
A five-part technical tour of Solana for intermediate readers: origins and monolithic architecture, Proof of History plus Tower BFT, the priority-fee and Jito MEV stack, the validator set and Firedancer rollout, and an honest outage accounting capped by a hands-on Zelcore self-custody capstone. Mirrors the Bitcoin and Ethereum deep-dive arcs already shipped in coin-guides, honest about Solana's strengths and its real tradeoffs around centralization and liveness.
5 parts · coin-guides
A mechanism-first tour of Ethereum for readers who already know the basics: how ETH's issuance shifted from proof-of-work mining to post-Merge net issuance, how the account model and EVM actually execute state changes, how gas and blob fees clear under EIP-1559 and EIP-4844, how staking and rollups scale the system, and how to hold ETH safely in Zelcore. The arc parallels Bitcoin Deep Dive, moving from monetary history through protocol mechanics and scaling into practical self-custody, ending on the near-term roadmap through Pectra, Fusaka, and Danksharding.
6 parts · coin-guides
Six evergreen frameworks for decoding crypto news — hack post-mortems, regulation, ETF flows, supply events, stablecoin depegs, and protocol upgrades — built around 2025–2026 events as teaching cases.
6 parts · news-explained
The complete onboarding path for new Zelcore users — install the wallet, add your first coins, send and receive safely, swap between assets, connect to dApps, and back up your seed phrase. Seven practical walkthroughs that turn a fresh install into confident self-custody.
7 parts · how-to
A practical introduction to NFTs — what they are, where they live, how marketplaces work, how to stay safe from drainers, and what utility NFTs are actually good for in 2026.
8 parts · nft
A mechanism-first tour of Bitcoin — from the 21M supply schedule and UTXO accounting, through Lightning and the fee market, up to 51% attack economics and holding BTC non-custodially in Zelcore. Each part builds on the last so you end up with a working model of why Bitcoin behaves the way it does on-chain.
6 parts · coin-guides
A mechanism-first walkthrough of decentralized finance that explains how the plumbing actually works, not which farm to chase this week. Each part builds on the previous one, moving from the base primitives (tokens, wallets, gas) through AMMs, lending, stablecoins, and oracles, then up to the real risks — impermanent loss, liquidation cascades, and smart-contract exploits — so readers can evaluate any DeFi protocol on their own terms.
8 parts · defi
A seven-part security course for users who want to own their keys properly. Covers what exchanges actually hold, seed-phrase mechanics at depth, the multi-chain custody problem, what hardware wallets do and don't protect against, the 25th-word passphrase, the full attack-surface map, and a decision framework for your own custody plan.
7 parts · security
A sequenced ten-part course that takes absolute beginners from 'what is a blockchain?' all the way to sending their first transaction safely and understanding what to do next.
10 parts · basics
