Zelcore

Zelcore Academy

Guides, tutorials, and deep dives to help you master crypto self-custody.

Browse by topic

Crypto Basics

Foundational concepts every crypto user should know — wallets, keys, transactions, and blockchains explained.

16 articles

Security

Protect your crypto: seed phrases, phishing, scam patterns, and hardware wallet best practices.

17 articles

DeFi

Decentralized finance explained — staking, lending, swaps, yield, and how to use DeFi safely.

38 articles

NFTs

NFTs, digital collectibles, and on-chain ownership: how they work and how to manage them.

13 articles

How-To Guides

Step-by-step walkthroughs for common crypto tasks — sending, receiving, swapping, and recovering.

21 articles

Coin Guides

Deep dives into individual coins and chains — what they do, how they work, and how to hold them.

51 articles

Learning paths

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bStocks: Tokenized US Stocks in Your Zelcore Wallet

5 parts

Cosmos 2026: The Internet of Appchains

5 parts

Cardano in 2026

4 parts

Latest articles

SEC crypto custody proposal illustrated by a crypto vault with separate client, adviser, and custodian controls

SEC crypto custody proposal: Who controls the keys?

A new SEC proposal puts crypto custody by investment advisers and funds in focus. For wallet users, the key question is who can authorize a transfer, not simply whose name appears on the account.

7 min read
MetaMask staking incident illustrated with diverted validator rewards, an exiting Ethereum validator, and a separate ETH withdrawal key

MetaMask staking incident: why validators exited and what ETH stakers should check

Reported diversion of staking rewards prompted MetaMask to exit Ethereum validators. ETH stakers should check reward destinations, withdrawal credentials, and exit status as separate issues.

7 min read
Illustration of a zk.money privacy wallet payment path with visible Ethereum deposit and withdrawal points

zk.money privacy wallet returns: What private Ethereum payments reveal

zk.money has returned as an option for private payments connected to Ethereum. Here is what a deposit can still reveal and what to check before using the new release.

7 min read
Chainlink CCIP 2.0 cross-chain transfer illustrated as a guarded bridge between two blockchains with separate confirmation lights

Chainlink CCIP 2.0: What the Upgrade Means for Cross-Chain Transfers

Chainlink’s September 28 CCIP 2.0 launch puts configurable security checks and faster transfers in focus. Here is what those changes mean when you move assets between chains from a self-custody wallet.

7 min read
Wallet owner asks: can Tether freeze USDT? An issuer-controlled contract gate blocks token transfers while the owner holds the key.

Can Tether freeze USDT in a self-custody wallet?

Tether can restrict transfers of its USDT on supported networks even when you control your wallet keys. A September 28 Senate report and Tether’s response bring that distinction into focus.

7 min read
Bitcoin ETF inflows flowing into a fund while a user controls Bitcoin and Ether in a self-custody wallet

Bitcoin ETF Inflows Explained: ETFs vs Direct Ownership

Recent Bitcoin and Ether ETF inflows show how regulated funds can connect traditional markets with crypto liquidity. They can influence market sentiment, but holding ETF shares does not give you the same control as holding coins in a self-custody wallet.

8 min read
Solana Alpenglow upgrade visual showing faster 150-millisecond transaction finality for wallets, exchanges, and bridges

Solana Alpenglow Upgrade: What 150ms Finality Means for Wallets

Solana’s Alpenglow upgrade has reached both public test networks, moving its proposed faster-finality design closer to real-world testing. Here is what the change could mean for wallet confirmations, exchange deposits, and bridge safety.

9 min read
Bitget hot wallet breach explained through an exchange hot wallet, on-chain tracing, and self-custody comparison

Bitget Hot Wallet Breach Explained: What the $387.5M Loss Means

The reported Bitget hot-wallet breach highlights how exchange wallets concentrate custody risk, why withdrawals may pause during an incident, and what on-chain tracing can—and cannot—recover. Here is how the reported $387.5 million figure fits with the different estimates in public reporting.

8 min read
GENIUS Act stablecoin rules explained beside a self-custody wallet and Treasury-backed reserve vault

GENIUS Act stablecoin rules: What wallet users need to know

The GENIUS Act creates a federal framework for payment stablecoins, while new Federal Reserve rulemaking would help determine how safeguards work in practice. Here is what reserve quality, capital requirements, redemption rights, and issuer controls mean for people holding dollar tokens in self-custody wallets.

9 min read
DCENT wallet hack draining XRP from mobile wallets and users migrating funds to newly generated addresses

DCENT Wallet Hack: What the XRP Drain Means for Users

Nearly $20 million in XRP was reportedly drained from 6,678 DCENT wallets across six attack waves. The incident highlights why users must treat a compromised wallet app or key-management system as a reason to stop using old addresses and migrate funds.

8 min read
Flat illustration: an under-funded token box next to an empty hourglass, and a well-funded, shielded box next to a half-full hourglass

Ergo Storage Rent Explained: How Dormant Token Boxes Get Claimed

On Ergo, a box unmoved for four years can be claimed by anyone. How storage rent works, what happened to Flux's reserve, and how to protect your tokens.

7 min read
Binance Circle USDC deal illustration showing USDC liquidity moving between an exchange and self-custody wallet

Binance Circle USDC Deal: What It Means for Wallet Users

Binance is reported to have purchased a $100 million stake in Circle and agreed to a five-year USDC promotion partnership. The arrangement could improve USDC liquidity and access, but self-custody users should still evaluate networks, redemption assumptions, and exchange concentration.

8 min read