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Difficulty - Medium

Total Plays - 1

Allowed Time - 10 sec

Best time - 10 sec

Which Solidity feature is riskiest if misused with delegatecall?

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#A

#B

#C

#D

Explanation:
Delegatecall shares storage between contracts; mismatched layouts can overwrite variables and cause exploits.

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Difficulty - Medium

Total Plays - 4

Allowed Time - 10 sec

Best time - 10 sec

Which testing tool supports property-based fuzzing for Solidity?

Tip: Click "Play" to reveal options and start playing.

#A

#B

#C

#D

Explanation:
Echidna auto-generates random inputs to stress invariants, uncovering deep logic vulnerabilities.

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SmartChainSmith

@SmartChainSmith • 3w

Post-Airdrop DAO Growth — How Do You Retain Users Without Incentives?

Our DAO recently completed a major airdrop, and while we saw a huge spike in wallet activity, participation has since crashed by 78% in 30 days. I’m the growth lead...

2

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MakerInProgress

@MakerInProgress • 3w

How Should a DAO Growth Manager Define Real Retention After an Airdrop When Wallet Activity Drops Fast?

Our DAO recently ran a big airdrop, and wallet activity fell sharply after about two weeks. As the Growth Manager, I need to define “retention” in a way that reflects...

2

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CryptoSagePriya

@CryptoSagePriya • 3w

How Do Web3 Community Managers Prove Real On-Chain Engagement When Founders Expect More Than Discord Metrics?

I’ve been handling community growth for an early-stage NFT + DeFi project, and we’re trying to move past counting Discord members. The founders now want me to “show on-chain engagement,”...

2

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Web3WandererAva

@Web3Wanderer • 3w

What’s the Best Way for a Blockchain QA Engineer to Admit Not Knowing an Answer During a Deep Technical Interview?

During a QA interview for a Layer-2 scaling project, I was asked how I’d test Merkle proof verification inside bridge contracts. I’d read about it before, but I couldn’t recall...

1

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Web3WandererAva

@Web3Wanderer • 3w

How Should a Web3 Growth Analyst Define Real Post-Token-Launch Retention in India When DAU Drops Hard After Hype?

I’m a Growth Analyst for a DeFi startup focused on the Indian market, and our numbers cratered right after the token launch. DAU slid from 11k to 1.8k within six...

1

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Sheza Henry

@ChainVisionary • 3w

Where Do Smart Contract Developers Draw the Ethical Line When Joining High-Risk DeFi Protocols?

Hey everyone,I’ve been developing smart contracts for over two years now—mostly audit-clean DeFi tools and staking modules. Recently, I was approached to work with a DeFi protocol that’s been called...

5

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SolidityStarter

@SolidityJatin • 3w

Which Blockchain Roles Are Realistic for Fintech Analysts Learning Power BI and SQL?

I’ve been a business analyst in fintech for 4 years, focusing on data analytics, Power BI dashboards, and stakeholder management. I’m now exploring blockchain-based business roles but prefer to stay...

4

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Rohit Kumar

@rohit • 3w

Blockchain developer job opportunities at Infosys Pune?

I’m a Java developer and have 3 years of experience. I’m working with MNC and looking for job change. I want to know about blockchain developer jobs at Infosys Pune....

0

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Shubhada Pande

@ShubhadaJP • 3w

Proof-Heavy Smart Contract Portfolios: What Hiring Managers Actually Trust (2025 Edition)

Introduction — The Rise of the Proof EconomyInside ArtofBlockchain.club, after reviewing hundreds of recruiter–candidate discussions, one truth stands out:In 2025, blockchain hiring runs on proof — not potential.Recruiters no longer...

3

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Abasi T

@ggvVaSO • 3w

How Do Blockchain QA Engineers Keep Automation Stable Across Networks When Forks Drift and RPCs Time Out?

Automation in blockchain QA looks straightforward until you scale it across networks. Hardhat, Foundry, Slither, MythX — each works fine alone, but once you start chaining them, things get messy....

2

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Abasi T

@ggvVaSO • 3w

How Can a Blockchain QA Engineer Clearly Explain Gas-Optimization Trade-Offs in Interviews Without Sounding Unsure or Overclaiming?

Gas optimization often feels like guesswork. Developers proudly say they “saved 10 gas,” but I’m never sure how meaningful that really is. In a recent Layer-2 bridge audit, I saw...

1

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Tushar Dubey

@DataChainTushar • 3w

As a Multichain QA Engineer, How Do You Manage Test Coverage Drift When ETH Is Stable but Polygon/BSC Keep Failing?

I’m working as a blockchain QA engineer on a multichain DeFi protocol, and our test coverage has started drifting across networks. Ethereum runs are usually stable, but Polygon and BSC...

3

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Shubhada Pande

@ShubhadaJP • 3w

How Recruiters Read Your GitHub (2025): Building Proof Stacks for Blockchain Trust

🧩 From Code Dumps to Proof Stacks GitHub used to be where developers parked their projects.In 2025, hiring managers don’t browse portfolios — they audit them.They trace how you built...

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