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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ChainPenLilly
@ChainPenLilly • Nov 28, 2025

Nov 28, 2025

198

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

568

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
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

536

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

260

🚀 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

394

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

310

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

759

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

386

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
Andria Shines
@ChainSage • Nov 29, 2025

Nov 29, 2025

614

How do I craft a 60-second founder-focused pitch as a junior Solidity developer when my repos are small but real?

I’ve been trying to break into Solidity roles for three months, and founder responses confuse me more than recruiter responses. Recruiters ask for resumes, keywords, portfolios… but founders jump straight...

Like 4 Replies 7
AlexDeveloper
@Alexdeveloper • Nov 20, 2025

Nov 20, 2025

1.1K

Feeling Lost as a New Blockchain Developer: How Do You Navigate a Confusing Codebase?

I joined a blockchain company three months ago after eight years in backend engineering, including five years with Rust. But this is my first role in Web3 — and the...

Like 10 Replies 3