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MEXC Exchange/Learn/Sarah Chen
Sarah Chen

Sarah Chen

Nationality: Australia Bio: Sarah Chen specializes in DeFi protocols, smart contracts, and Layer-2 solutions. Based in Melbourne, she brings technical expertise and clear communication to complex blockchain topics. She holds a Bachelor's degree in Computer Science from the University of Melbourne and worked as a blockchain developer for three years before transitioning to technical writing. Her hands-on experience with Ethereum, Solana, and other platforms allows her to explain intricate concepts in accessible language. Since joining MEXC Learn in 2022, Sarah has focused on making blockchain technology understandable for all users, covering topics from DeFi yield farming to zero-knowledge proofs. Areas of Expertise: - DeFi Protocols - Smart Contract Analysis - Layer-2 Solutions - Blockchain Infrastructure - Protocol Security

Recent Articles

Bitget KYC Requirements (2026): One Level, Up to 60 Minutes, and a 3M USDT Daily Limit

Bitget KYC Requirements (2026): One Level, Up to 60 Minutes, and a 3M USDT Daily Limit

Bitget requires Level 1 identity verification, a government ID plus a facial check, before an account can deposit, trade or withdraw, a rule phased in between 1 September 2023 and 20 July 2024. Level

2026-09-10

Bitget Withdrawal Limit Explained: 3M USDT a Day at VIP 0, 20M at VIP 7, and Nothing Without KYC

Bitget Withdrawal Limit Explained: 3M USDT a Day at VIP 0, 20M at VIP 7, and Nothing Without KYC

Bitget's 24-hour withdrawal limit runs from 3M USDT at VIP 0 to 20M USDT at VIP 7, counted across all coins at their USDT value, and an account without Level 1 verification has not been able to

2026-09-10

Kraken Fees Explained (2026): Kraken Fees Explained: The 9 July 2026 Tier Change That Doubled Kraken's Entry Taker Rate to 0.80%

Kraken Fees Explained (2026): Kraken Fees Explained: The 9 July 2026 Tier Change That Doubled Kraken's Entry Taker Rate to 0.80%

Kraken charges 1% plus a spread on Instant Buy, 1.5% on custom orders, 0.40% maker and 0.80% taker at Tier 1 on Kraken Pro spot, 0.02% maker and 0.05% taker on futures, and a fixed per-asset fee on

2026-09-10

Kraken KYC Explained (2026): Why Do Guides Still List Four Tiers When Kraken's Page Now Shows Two Paths?

Kraken KYC Explained (2026): Why Do Guides Still List Four Tiers When Kraken's Page Now Shows Two Paths?

Kraken requires identity verification before you can deposit, trade or withdraw, and a verified personal account needs a government-issued ID plus a proof of address dated within three months, with

2026-09-10

Kraken Withdrawal Times and Limits (2026): 20 Minutes of Checks, So Why Do Some Withdrawals Wait 72 Hours?

Kraken Withdrawal Times and Limits (2026): 20 Minutes of Checks, So Why Do Some Withdrawals Wait 72 Hours?

Kraken's internal checks on a crypto withdrawal take up to 20 minutes across two stages before the transaction reaches the network, while cash withdrawals range from near-instant to five business

2026-09-10

OKX Withdrawal Limit Explained (2026): Why It Starts at 10,000,000 USD a Day and Has Nothing to Do With Your KYC Level

OKX Withdrawal Limit Explained (2026): Why It Starts at 10,000,000 USD a Day and Has Nothing to Do With Your KYC Level

OKX sets its 24-hour crypto withdrawal limit by fee tier, not KYC level: 10,000,000 USD equivalent at the Regular tier, rising to 80,000,000 USD at VIP 8 and above, calculated daily at 16:00 UTC, and

2026-09-10

OKX KYC Requirements (2026): One Verification, Four Documents, 24 Hours, and 12 Ways to Fail It

OKX KYC Requirements (2026): One Verification, Four Documents, 24 Hours, and 12 Ways to Fail It

OKX requires every individual account to pass one advanced identity verification before it can trade, deposit or withdraw: personal details, a government-issued ID, a selfie and, where applicable,

2026-09-10

OKX Fees Explained (2026): Which of OKX's Three Fee Schedules Is Your Account Secretly On?

OKX Fees Explained (2026): Which of OKX's Three Fee Schedules Is Your Account Secretly On?

OKX charges Regular-tier accounts on its global schedule 0.08% maker and 0.10% taker on spot and 0.02% maker and 0.05% taker on futures, while EEA accounts without a derivatives account and all US

2026-09-10

MRKON Risks Explained: KEYTRUDA Dependence, Patent Expiry, Clinical Trials and Tokenized Stock Risk

MRKON Risks Explained: KEYTRUDA Dependence, Patent Expiry, Clinical Trials and Tokenized Stock Risk

Summary MRKON combines the risks of a major pharmaceutical company with an additional tokenized-market layer. The most important underlying risks include: dependence on KEYTRUDA; the 2028 patent

2026-09-10

Is MRKON Backed by MRK Stock? Custody, Dividends and Investor Rights Explained

Is MRKON Backed by MRK Stock? Custody, Dividends and Investor Rights Explained

Summary MRKON belongs to Ondo Stocks, a tokenized-equities framework designed to provide economic exposure to traditional securities. Ondo describes its tokenized stocks as total-return trackers of

2026-09-10

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