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  • Difficulty - Medium
    Total Plays - 11
    Allowed Time - 10 sec
    Best time - 3.307

    Why should developers avoid using tx.origin for authentication?

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

    #A
    #B
    #C
    #D
    Explanation:
    Attackers can trick users into calling a malicious contract. That contract then makes a call where tx.origin equals the victim’s address. This bypasses access control and leads to unauthorized actions.
    Leaderboard
  • Difficulty - Medium
    Total Plays - 12
    Allowed Time - 10 sec
    Best time - 1.493

    Why are fallback functions dangerous?

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

    #A
    #B
    #C
    #D
    Explanation:
    Fallback functions run automatically when unknown calls or plain ETH are sent. If they contain external calls or heavy logic, attackers can trigger recursion or re-entrancy. They must be kept minimal and safe.
    Leaderboard
  • Difficulty - Medium
    Total Plays - 11
    Allowed Time - 10 sec
    Best time - 1.974

    Why can abi.encodePacked cause issues?

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

    #A
    #B
    #C
    #D
    Explanation:
    encodePacked removes padding, which can produce identical byte sequences for different inputs. When combined with hashing, this may cause collisions. Using abi.encode is safer for multi-field data.
    Leaderboard
  • SmartChainSmith

    SmartChainSmith

    @SmartChainSmith • Dec 10, 2025
    Dec 10, 2025
    317

    Anybody dealt with a DAO where Discord is active but on-chain activity is flat?

    I manage analytics for a mid-sized DAO (~12K members), and I’m running into a strange mismatch I can’t seem to solve internally. Our Discord is busier than ever — more...
    Like 1 Replies 5
  • Shubhada Pande

    Shubhada Pande

    @ShubhadaJP • Dec 9, 2025
    Dec 9, 2025
    232

    A Clear Framework for Debugging Solidity Errors That Keep Reappearing in Interviews

    A Clear Framework for Debugging Solidity Errors That Keep Reappearing in Interviews
    Disclaimer: This guide covers debugging patterns commonly evaluated in Solidity interviews and early-career smart contract roles. It is not a complete security audit methodology. Different teams and advanced audit firms...
    Like 2 Replies 0
  • Abdil Hamid

    Abdil Hamid

    @ForensicBlockSmith • Dec 9, 2025
    Dec 9, 2025
    1.3K

    I’m Moving From Finance Into Blockchain Development — What Career Mistakes Should I Avoid in My First 12 Months?

    I’m shifting from forensic investigations in investment banking into blockchain development, and the transition has been more unpredictable than I expected. The technical learning curve is steep, but the career...
    Like 6 Replies 5
  • Shubhada Pande

    Shubhada Pande

    @ShubhadaJP • Dec 8, 2025
    Dec 8, 2025
    251

    Smart Contract Developer Hiring: Practical Signals Teams Should Check Before Extending an Offer

    Smart Contract Developer Hiring: Practical Signals Teams Should Check Before Extending an Offer
    Most Web3 founders know the pain of mis-hiring a smart contract developer. The symptoms repeat every time:Feature velocity slows.QA and security stretch thin.Seniors take on invisible clean-up work.Teams shift from...
    Like 0 Replies 0
  • Mahesh S

    Mahesh S

    @f6DpcOE • Dec 8, 2025
    Dec 8, 2025
    3.4K

    Where can a B.Tech graduate find good blockchain training or internship opportunities today?

    Hi,Are there any reputable blockchain training institutes offering courses — especially including Solana — for a B.Tech graduate?He already has a good understanding of blockchain, DeFi, and smart contracts, but...
    Like 2 Replies 7
  • AuditWardenRashid

    AuditWardenRashid

    @AuditWarden • Mar 24, 2026
    Mar 24, 2026
    545

    How to Answer Salary Expectations in Early-Stage Blockchain Startups When Pay Includes Cash, Tokens, and Equity

    I’m struggling with the salary expectations question in early-stage blockchain startup interviews because the answer becomes unclear the moment compensation includes cash, tokens, and equity. I have three years of...
    Like 3 Replies 5
  • Anne Taylor

    Anne Taylor

    @BlockchainMentorAT • Mar 14, 2026
    Mar 14, 2026
    922

    Questions to Ask the Interviewer in a Blockchain Job Interview (Without Sounding Generic)

    Every blockchain job interview seems to end with the same line: “Do you want to ask anything?”And honestly, that part can feel more stressful than the technical round itself. I...
    Like 9 Replies 7
  • AuditWardenRashid

    AuditWardenRashid

    @AuditWarden • Feb 26, 2026
    Feb 26, 2026
    1.2K

    YouTube says Web3 is booming. My network says otherwise. What’s the real market in 2025?

    I’m trying to sanity-check the Web3/blockchain job market in 2025 beyond the YouTube narrative. A lot of creators keep saying “Web3 is booming” and “salaries are exploding,” but in my...
    Like 9 Replies 4
  • amanda smith

    amanda smith

    @DecentralizedDev • Dec 7, 2025
    Dec 7, 2025
    1.6K

    How do you explain to an interviewer the trade-offs of a single contract acting like both ERC-721 and ERC-1155?

    I recently struggled with an interview question about designing a single NFT contract that behaves like both ERC-721 and ERC-1155. The interviewer wanted a practical explanation, not just theory, and...
    Like 4 Replies 4
  • John Mathew

    John Mathew

    @BABXSUw • Dec 7, 2025
    Dec 7, 2025
    1.3K

    Is a compliance certification enough for a global Web3 legal career, or do I need a specialized LLM too?

    I’m trying to pivot into global blockchain compliance after five years in international law, but I’m stuck between two paths — should I double down on certifications, or invest in...
    Like 2 Replies 3
  • AnitaSmartContractSensei

    AnitaSmartContractSensei

    @SmartContractSensei • Apr 3, 2026
    Apr 3, 2026
    2.2K

    Remote Blockchain Jobs Across Time Zones: Do Developers Actually Work Night Shifts to Match US Teams?

    I work remotely in a blockchain team where everyone is in different time zones, and we barely get 2–3 hours of overlap each day. Meetings fall at odd hours —...
    Like 7 Replies 7
  • KK

    KK

    @kaustubh • Dec 6, 2025
    Dec 6, 2025
    1.0K

    How does data storage really work in blockchain? What can go on-chain vs off-chain?

    I’m still early in my blockchain learning journey, and I’m confused about something very basic: can blockchain actually be used like a database?For example, if I’m building an app that...
    Like 9 Replies 4
  • Abasi T

    Abasi T

    @ggvVaSO • Dec 5, 2025
    Dec 5, 2025
    494

    Is my DAO governance work enough to land a Governance Analyst role, or do I need protocol experience too?

    I’ve been active in a couple of DAOs over the last year—proposal writing, forum discussions, occasional voting rationales, and a bit of delegate work. It’s been meaningful work, but I...
    Like 4 Replies 5
  • Fady Efat

    Fady Efat

    @hACjMzw • Dec 5, 2025
    Dec 5, 2025
    338

    Guidance on Next Steps for Web3 Development Career

    Hi everyone,I’ve developed 2 projects on the Spoilya network using Flutter:A one-time voting app.Clicker Bee mobile game with NFTs.and 1 using react with helping AI ,Crypto Tracker I’m not sure...
    Like 3 Replies 6
  • Sreya Nair

    Sreya Nair

    @1DXs7Yt • Mar 11, 2026
    Mar 11, 2026
    501

    How do freshers actually get a blockchain/Web3 internship or job today?

    I've been struggling to find internships or jobs in the blockchain/web3 industry despite multiple applications. I'm looking for advice on how to break into this competitive field and what specific...
    Like 6 Replies 4
  • Shubhada Pande

    Shubhada Pande

    @ShubhadaJP • Feb 25, 2026
    Feb 25, 2026
    470

    Hiring Managers & Recruiters Hub - Hiring Signals • Interview Expectations • Communication • Team Fit • Review Culture

    This hub focuses on what hiring managers, recruiters, founders, and senior engineers expect during hiring.Readers of these threads often feel unsure, anxious, or curious about how hiring decisions are made,...
    Like 9 Replies 0
  • ChainMentorNaina

    ChainMentorNaina

    @ChainMentorNaina • Dec 4, 2025
    Dec 4, 2025
    1.3K

    I’m a Junior dApp Developer and Community Upgrades Were Chaos — How Do I Explain This Safely in Interviews?

    I’m a junior dApp developer with just under a year of experience, and I’m switching jobs soon. One thing that still bothers me from my last role is how messy...
    Like 5 Replies 4
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About ArtofBlockchain

ArtOfBlockchain.club is a discussion-first community for blockchain jobs, Web3 careers, interview prep, and proof-based hiring insights.

Founded Jul 4, 2024

Recently active members

  • BS for Blockchain 6m
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Latest activity

  • Shubhada Pande
    Shubhada Pande • replied to 8h
    Teaching Solidity to Beginners: Which...
  • Shubhada Pande
    Shubhada Pande • published 8h
    Zero Knowledge Auditor — Cryptography/ZK...
  • Shubhada Pande
    Shubhada Pande • published 8h
    Smart Contract Auditor — Solidity...
  • Shubhada Pande
    Shubhada Pande • published 9h
    Software Engineering Lead — Python/Crypto...
  • KK
    KK • liked 19h
    Is Anyone Hiring Blockchain Project...
  • Shubhada Pande
    Shubhada Pande • published 1d
    Research Engineer Intern — Multimodal...
  • Shubhada Pande
    Shubhada Pande • published 1d
    Solutions Architect — Payments Infrastructure
  • amanda smith
    amanda smith • liked 1d
    Crypto Compliance Analyst career path...
  • amanda smith
    amanda smith • liked 1d
    Smart Contract Portfolio for Jobs:...
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    amanda smith • liked 1d
    Nethermind Interview (15-Minute Screen): What...

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