ArtofBlockchain

Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - 5.375

Why is SELFDESTRUCT dangerous in proxies?

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Explanation:
If the implementation contract is self-destructed, proxies break permanently or redirect unexpectedly. This creates bricked contracts and undefined behavior

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Difficulty - Medium

Total Plays - 8

Allowed Time - 10 sec

Best time - 10

What does RETURNDATASIZE prevent?

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Explanation:
RETURNDATASIZE ensures the caller knows exactly how many bytes were returned. It prevents incorrect assumptions and truncation bugs during low-level calls.

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Shubhada Pande
@ShubhadaJP • Mar 26, 2026

Mar 26, 2026

322

Proof-Based Hiring in Web3: How Founders Evaluate GitHub, Tests, Smart Contracts, and Audit Work Without Technical Knowledge

Most founders are not trying to evaluate code. They are trying to evaluate unpredictability. A candidate can sound sharp in interviews, explain architecture cleanly, and still create confusion the moment...

Like 0 Replies 0
ChainPenLilly
@ChainPenLilly • Nov 28, 2025

Nov 28, 2025

187

How do you rebuild clarity in a smart contract team when owner-driven docs slip, handovers get messy, and weekly alignment stops working?

I’m a mid-level smart contract developer in a small DeFi team, and I’m noticing a pattern: every time deadlines get tight, clarity collapses. Owner-driven docs start slipping, handovers get messy,...

Like 0 Replies 1
smith taylor
@kmBguOK • Nov 28, 2025

Nov 28, 2025

549

Final Year, 2 Internships Done — How Do I Get My First Full-Time Blockchain Developer Role?

I’m in my final year of college and just wrapped up two internships, but I still don’t have a full-time blockchain developer offer. Both internships were with small startups where...

Like 5 Replies 4
Web3WandererAva
@Web3Wanderer • Mar 15, 2026

Mar 15, 2026

888

Blockchain Developer vs Blockchain Engineer: What’s the Real Difference for Beginners?

I’m still not fully clear on the difference between a blockchain developer and a blockchain engineer. I see both titles everywhere on LinkedIn and job portals, and honestly, it’s confusing....

Like 7 Replies 8
Difficulty - Medium

Total Plays - 13

Allowed Time - 10 sec

Best time - 1.846

Why is storing large arrays on-chain discouraged?

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Explanation:
Storage is the most expensive resource in the EVM. Large arrays result in high operational cost and poor long-term scalability.

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Difficulty - Medium

Total Plays - 13

Allowed Time - 10 sec

Best time - 0.675

Why is using block.timestamp in fairness-critical logic dangerous?

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Explanation:
Miners can adjust timestamps within a reasonable range, enabling subtle manipulation. This can affect auctions, lotteries, and reward systems

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Damon Whitney
@CareerSensei • Nov 26, 2025

Nov 26, 2025

527

Burned Out as a Blockchain Developer in Dubai — Is Switching to DevRel Actually a Better Long-Term Career Move?

I’m honestly feeling burned out after 3+ years working as a blockchain developer in Dubai. Long hours, late-night deployments, nonstop tech changes… it’s draining. I still care about Web3, but...

Like 5 Replies 6
Amanda Smith
@AmandaS • Nov 26, 2025

Nov 26, 2025

2.0K

I Know Solidity, but Interviews Now Feel Like Security Exams — What Advanced Questions Should I Really Prepare For?

I’ve been writing Solidity for a few years now — mostly production contracts, not tutorials — but the interviews I’m getting lately feel completely different. They used to be about...

Like 14 Replies 6
Difficulty - Medium

Total Plays - 7

Allowed Time - 10 sec

Best time - 3.010

5. Why is delegatecall risky?

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Explanation:
delegatecall executes callee code in the caller’s storage context, leading to storage collisions and privilege escalation. This is a key attack vector in proxy contracts.

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Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 10

4. Which opcode is responsible for dynamic memory expansion cost?

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Explanation:
MSTORE triggers memory expansion when writing to higher memory slots. Memory grows quadratically, so developers must understand how loops and large arrays impact gas.

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Difficulty - Medium

Total Plays - 8

Allowed Time - 10 sec

Best time - 4.033

What happens if a constructor of a deployed contract reverts?

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Explanation:
If the constructor reverts, the entire deployment fails and no contract is created. This prevents partially-initialized smart contracts from being pushed on-chain

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Arif
@ofh3VYy • Nov 25, 2025

Nov 25, 2025

251

🚀 I Want to Become a StarkNet/Cairo Auditor — Here’s My Starting Point & I’d Love a Roadmap

I’m transitioning my focus toward StarkNet and Cairo security auditing and would appreciate guidance from anyone experienced in the ecosystem.What I know so far:• Solidity development• Hardhat, Foundry, and advanced...

Like 3 Replies 4
Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - 4.975

1. What does EXTCODEHASH primarily help detect?

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Explanation:
EXTCODEHASH returns the hash of a contract’s deployed bytecode, allowing detection of code changes or empty accounts. Auditors use it to verify contract identity and defend against unexpected contract replacement patterns

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Difficulty - Medium

Total Plays - 8

Allowed Time - 10 sec

Best time - 5.082

What is the main security benefit of using immutable variables?

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Explanation:
immutable variables are stored directly in bytecode, not in storage, reducing runtime gas and preventing accidental overwrites. It is a common optimization technique in gas-efficient contract design.

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Victor P
@TrG6JIR • Nov 23, 2025

Nov 23, 2025

382

Solidity Gas Optimization in Interviews: Why Juniors Fail the Question and What Seniors Actually Look For

I realized recently that I’ve been approaching “gas optimization” totally wrong in interviews. Every time the question comes up, I start dumping the usual lines — avoid storage writes, use...

Like 2 Replies 4
Sayali Bhandari
@SayaliB • Nov 23, 2025

Nov 23, 2025

301

Smart Contract Salary Negotiation in Remote Teams — How Do You Stay Fair Without Losing Leverage?

Salary negotiations in smart contract roles feel different from Web2. In remote-first teams, people earn from 6–40 LPA (and globally, $60K–$220K), and yet nobody really knows what “fair” looks like....

Like 1 Replies 5
Bondan S
@Layer1Bondan • Nov 21, 2025

Nov 21, 2025

747

Is It Safe to Accept Tokens Before Tokenomics Is Published? Developers Share What Really Happens

I’m stuck on a compensation dilemma that I know many Web3 engineers quietly face. I’ve received a Smart Contract Developer offer from an early L1 startup (India-based). The fiat salary...

Like 4 Replies 4
Tushar Dubey
@DataChainTushar • Nov 21, 2025

Nov 21, 2025

369

Why Do Tests Pass on Hardhat/Anvil Forks but Break on Mainnet? What Hidden Differences Are We Missing?

I’ve hit this pain point so many times that I genuinely stopped trusting “all tests passing” unless I run them against a real mainnet RPC.Here’s the pattern: everything works fine...

Like 3 Replies 5