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ChainPenLilly

@ChainPenLilly • 2mos

How to Start Coding for Blockchain Jobs in the US (Solidity vs Blockchain Fundamentals Dilemma for Developers)

I’m a software intern passionate about blockchain development, trying to figure out how to start coding for blockchain jobs in the US without wasting months on the wrong roadmap. I...

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ChainMentorNaina

@ChainMentorNaina • 2mos

Is it right move for Full-Stack Developers Switch to Blockchain Careers in 2025?

I’ve been a React/Node.js full-stack developer for 5 years and recently got an offer from a DeFi startup. The role sounds exciting, but I’m torn between risk and opportunity. Is...

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Sayali Bhandari

@SayaliB • 2mos

Preparing for Blockchain Voting System Interviews: Cryptography, Privacy & Consensus Insights

I’ve got an upcoming interview for a blockchain voting system project. My background is in cryptography (mostly DeFi and zk-based work), but this is my first time preparing for voting...

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Abdil Hamid

@ForensicBlockSmith • 3mos

Post-Airdrop Reality — How Do You Redefine “Growth” Once Speculators Leave?

We launched our DeFi token three months ago, and after the airdrop hype faded, our active wallets dropped from 9K to 2.8K. Discord is quieter, yet treasury inflows from staking...

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Difficulty - Medium

Total Plays - 8

Allowed Time - 10 sec

Best time - 0.966 sec

Which metric shows DAO user re-activation success?

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Explanation:
High voter turnout proves community re-engagement—an LSI metric linking retention to decentralized decision activity.

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Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 10 sec

What tool helps DAOs coordinate async sprints?

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

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Explanation:
DAO PMs rely on async dashboards like Notion to track proposals, milestones, and cross-time-zone updates.

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Difficulty - Medium

Total Plays - 8

Allowed Time - 10 sec

Best time - 8.679 sec

What’s the safest pattern for upgradeable contracts?

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

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Explanation:
Transparent proxy separates admin logic from user calls, preventing proxy loops and role confusion.

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Andria Shines

@ChainSage • 3mos

How to measure DAO Growth When Contributor Incentives Go Flat

I manage growth at a mid-sized DAO (~7K members) where contributor activity has been declining since the token incentive program flattened post-airdrop. Our Dune dashboards show daily active wallets dropped...

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Olivia Smith

@SmartOlivia • 3mos

“Struggling to run growth campaigns because our tokenomics isn’t finalized — how do others handle this?

I handle growth for an early-stage DeFi protocol still finalizing tokenomics. Our marketing strategy is stuck because we can’t run any token-based campaigns or referral incentives. Founders say “wait till...

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Difficulty - Medium

Total Plays - 5

Allowed Time - 10 sec

Best time - 10 sec

What’s the goal of invariant testing in Solidity QA?

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Explanation:
Invariant testing in Solidity focuses on proving that certain properties of a smart contract always hold true, no matter what inputs or transactions occur. These tests run random sequences of actions to check if core rules — like balance consistency, ownership logic, or access permissions — ever break. By doing this, developers can find deep logical bugs or regressions that normal unit tests might miss. It’s one of the most reliable QA methods to ensure contract integrity and security over time.

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Difficulty - Medium

Total Plays - 4

Allowed Time - 10 sec

Best time - 2.261 sec

What’s the strongest proof for blockchain developers in hiring?

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Explanation:
Verified commits and deployed code give verifiable skill proof, beating traditional CV screening in Web3.

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Application deadline: 2 months

N

Senior Product Designer

Nansen • FULL_TIME • NA

Job description

About NansenNansen is a data intelligence platform built to make on-chain analytics accessible, actionable, and insightful. Our mission is to help investors, builders, and decision-makers understand blockchain data in real time — powering smarter moves across the Web3 ecosystem.What You’ll DoAs a Senior Product Designer, you’ll help shape how users...

Details Login to apply
Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 10 sec

Which on-chain action best signals real user adoption?

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Explanation:
Sustained transaction frequency shows that users are consistently finding real value in a blockchain product, not just testing it temporarily. It’s a strong Tier-3 proof of product-market fit because it reflects ongoing user trust, retention, and organic demand—far more meaningful than vanity metrics like token price or social media hype.

Leaderboard
Difficulty - Medium

Total Plays - 6

Allowed Time - 10 sec

Best time - 2.521 sec

What element most improves wallet onboarding UX?

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Explanation:
Transparent gas-fee explanations reduce drop-offs; clarity > aesthetics in first-time wallet UX.

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Abasi T

@ggvVaSO • 3mos

How to balance between Paid Ads vs Organic Retention in Web3 App Growth

I’m the growth lead for an early-stage NFT marketplace targeting the India market. Our user base grew from 3K → 11K post-airdrop, but daily active users (DUAs) plateaued at ~900....

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