UCard Radar research library
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Risk analysis, card comparisons, regional topics, industry reports, and data-transparency coverage.
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Crypto Card Fees in 2026: Top-Up and FX Costs Across Five Providers and Ten Card Plans
UCard Radar compares ten card plan–region combinations from Coinbase, Crypto.com, Bybit, Nexo, and RedotPay, covering foreign transaction fees, crypto conversion, top-ups, ATM withdrawals, and cardholder costs. It also examines the differences between exchange rate spreads, FX padding, and dynamic currency conversion (DCC).
KAST vs. RedotPay: Fees, Availability, Payment Features, and How Funds Are Managed
How do KAST and RedotPay differ in fund management, card issuance fees, transaction costs, and eligibility by country? This comparison examines stablecoin deposits, conversion at checkout, cashback, Apple Pay, ATM withdrawals, and the risks of each model to help readers assess which card better fits their assets and spending habits.
The Core Reasons U Cards Get Shut Down
When a U Card suddenly stops working, the real cause may lie in weaknesses across the issuing chain: BIN-level risk, contaminated pooled funds, multi-layer intermediaries, and more. Users should top up only as needed, diversify their payment options, and avoid treating a U Card like a savings account.
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Bitget Wallet Card vs Gate Card: Application Requirements, Spending Fees, and Regional Restrictions
Bitget Wallet Card and Gate Card are both crypto payment cards, but they differ significantly in product model, application requirements, fees, and regional restrictions. Bitget supports applications from mainland China, while Gate does not. In terms of fees, Bitget offers a fee-free allowance, while Gate charges a 0.9% conversion fee plus a 0.4% foreign exchange fee. Regional...
Crypto.com Visa Card vs Coinbase Card: Cashback, Fees, and Supported Regions
Crypto.com Visa Card and Coinbase Card are both crypto payment cards, but they work in very different ways. Crypto.com is a prepaid card with tiered cashback, but higher rewards require a subscription fee or CRO staking; Coinbase is a debit card with a simpler fee structure, but cashback in Europe is less clear. This article compares cashback, fees, regions, Apple Pay
EasiCoin Card Registration and Usage Tutorial
This article provides a detailed tutorial on registering and using the EasiCoin Card, including downloading the app, registering an account, binding phone and email, KYC verification, topping up USDT, applying for the card, and payment testing, to help users get started quickly.
Coldcard Wallet Entropy Flaw and Nearly $90 Million in Losses: A Stark Warning from “Absolutely Secure” Hardware
A low-entropy flaw in Coldcard wallet firmware may have enabled the sweeping of roughly 1,367 BTC, worth close to $90 million. Coinkite has released fixed firmware, and affected users need to generate new seeds and move their funds.
BitMart Announces Shutdown: From the $196 Million 2021 Hack to the Exit Logic of a Mid-Sized Crypto Exchange
BitMart has announced an orderly wind-down of operations. From the $196 million hack in 2021 to the strategic retreat of a mid-sized exchange, this article examines the reasons behind the shutdown, the timeline, and the broader industry implications.
Rain: A Deep Dive into the Infrastructure Company Behind Stablecoin Card Issuing
Rain is an enterprise-grade stablecoin payments infrastructure provider that helps wallets, exchanges, and other platforms launch branded card programs. It handles card issuance, transaction authorization, stablecoin debiting, and settlement over traditional card networks. This article examines Rain’s business model, services, funding history, partner programs, and card-issuing costs.