A detailed 2025 review of CoinUp.io crypto exchange, covering its derivatives trading, low fees, mobile app, security gaps, and lack of regulation. Is it safe? Who should use it? Real insights from live trading data.
Crypto Library Archives: April 2025 Blockchain and Crypto Updates
When you look at blockchain, a decentralized digital ledger that records transactions across many computers. Also known as distributed ledger technology, it’s the backbone of everything from digital money to smart contracts. April 2025 brought real shifts—not just hype. New chain upgrades went live, wallet security flaws got patched, and airdrop hunters found their biggest opportunities yet. This archive collects everything that mattered during that month: no fluff, just what you needed to know.
cryptocurrency, digital money built on blockchain that operates without central banks. Also known as crypto, it’s not just Bitcoin and Ethereum anymore. In April, smaller tokens gained traction as major exchanges added new listings. Solana-based projects saw renewed interest after speed improvements, while Ethereum’s Layer-2 fees dropped again, making micro-transactions practical. Meanwhile, regulators in three countries clarified how they’d treat staking rewards—something every holder should’ve paid attention to.
crypto wallet, a digital tool that lets you store, send, and receive cryptocurrency securely. Also known as crypto key manager, it’s your personal vault. April’s biggest warning? Fake mobile apps pretending to be MetaMask and Trust Wallet stole funds from over 12,000 users. The library published step-by-step checks to spot fakes—like verifying app signatures and avoiding links from Twitter DMs. Hardware wallet users also got new firmware guides to lock down their devices against side-channel attacks.
airdrop, free cryptocurrency tokens given to users for completing simple tasks like holding a coin or joining a community. Also known as token giveaway, it’s one of the most accessible ways to get into crypto. This month had over 40 verified airdrops, from DeFi protocols rewarding early testers to new NFT games handing out tokens to Discord members. We tracked which ones were legit, which had hidden gas fees, and which were outright scams. The top three paid out within 72 hours after claiming—no waiting months.
And then there’s exchange, a platform where you buy, sell, or trade cryptocurrencies. Also known as crypto trading platform, it’s where most people start and end their crypto journey. In April, three major exchanges shut down withdrawal services temporarily due to system upgrades. Others rolled out new fee structures that made small trades cheaper. We compared the top five based on real user reports—not marketing claims. One exchange even started supporting direct bank transfers in five new countries, cutting out third-party gateways.
What you’ll find in this archive isn’t just a list of articles. It’s a snapshot of what actually moved the needle in April 2025: tools that worked, scams that failed, and updates that saved people money. No guesswork. No recycled news. Just the facts that helped real users stay safe, save on fees, and find value where others missed it.
The Bitcoin block reward is the incentive miners receive for securing the network, made up of newly minted Bitcoin and transaction fees. It halves every four years, creating scarcity and shaping Bitcoin's value. As subsidies shrink, fees will become critical.
CrossTower was once positioned as an institutional crypto exchange with strong credentials - but after being demoted by Wilshire Indexes in 2023, it faded into obscurity. Here's why it failed and what to use instead in 2025.
Automated and manual security auditing each have strengths in blockchain. Automation catches technical flaws fast and cheap. Humans find logic errors no tool can see. The best approach uses both.
ARzPaya is Iran's leading crypto exchange for trading Bitcoin, Ethereum, and Tether with local bank deposits. Learn its pros, cons, risks, and whether it's safe for Iranian users in 2025.
Mettalex ran three MTLX airdrops in 2021 targeting FET holders on Binance and social media users. The largest required holding 10,000 FET for eight weeks. No new airdrops exist in 2025.
Learn how to find and claim cryptocurrency airdrops safely in 2025-avoid scams, spot legit opportunities, and understand tax rules. Step-by-step guide for beginners and experienced users.
Social Send (SEND) is a crypto project with zero circulating supply and $0 trading volume-clear signs of a scam. Learn why it's not a real exchange or investment, and how to spot similar fake tokens.
STON.fi v2 is the fastest, cheapest decentralized exchange for trading TON blockchain tokens. With zero fees, 10-second swaps, and no KYC, it's ideal for beginners and TON ecosystem users.
Karura Swap is the leading DeFi exchange on Kusama, offering cross-chain trading, liquid staking, and low-fee swaps without KYC. Ideal for advanced users in the Polkadot ecosystem.
Oasis Network is a privacy-focused blockchain with fast, low-cost DeFi and tokenized data features. Learn how ROSE staking, YuzuSwap, and confidential computing make it stand out in crypto.