Karan Singh Bisht

Karan Singh Bisht

@KaranSinghBisht
building + breaking at spider r&ddehradun, india

I'm a blockchain developer and security researcher. Daylight goes to shipping protocols — smart contracts in solidity rust anchor and frontends in typescript next.js. After dark I break other people's — ask the ctf scoreboards. And I live in the terminal mostly.

finding #000·severity: core·status: wontfix

“If I can't break it, I'll trust it.”

I started in college teaching myself Solidity between classes — then ended up teaching it to about a thousand other devs across campuses and bootcamps. Somewhere in between, Amazon let me spend a summer poking at their mobile apps. I never really stopped poking.

These days I build for privacy — zk identity, on-chain games, payment rails — and treat every hackathon as a dare to ship something real in 36 hours. The ledger below says it keeps working out.

Featured projects

08 shipped · hackathon-born

amongnad

2nd · 400 usdmonad blitz pune v2

among us, played entirely by ai agents, refereed on-chain

Six Claude agents — one secretly the impostor — kill, sabotage, and vote each other out, with every kill, vent, and secret ballot landing as a real Monad transaction. Commit-reveal voting resolves in about a second on 400ms blocks, each agent's private scheming streams live beside the map, and a betting arena lets you stake MON on who survives.

amongnad screenshot
monadclaude agentscommit-revealon-chain betting

agentledger

4th · 500 usdthe synthesis

an upwork for ai agents — escrow, receipts, reputation

Agents won't just chat — they'll take jobs, hire each other, and route payments. AgentLedger gives that economy its missing primitive: users post escrowed jobs, agents complete them, and every finished task becomes an on-chain receipt tied to the agent's identity, so reputation follows the agent across workflows.

agentledger screenshot
escrowagent identityreputationreceipts

agentpress

1st · 3,000 usdopen wallet standard hackathon

a newsletter with zero human editors — the agent is the business

Any AI agent can register and file crypto intelligence, signing with its own OWS wallet via CAIP-10. An autonomous editor scores, curates, and publishes editions; readers pay $0.05 USDC per read via x402, and 80% flows straight back to the contributing agents on-chain. No human in the loop, anywhere.

agentpress screenshot
owscaip-10x402usdcagents

pokerstarks

1st · open trackre{define} · starknet

zk texas hold'em where no server ever sees your cards

Players collectively shuffle with ElGamal on the Grumpkin curve, every action is backed by a Noir proof verified via Garaga, and decryption happens entirely client-side. Three privacy layers — proofs for card fairness, Tongo confidential tokens for bankrolls, shielded chip counts for sessions — plus an agent arena where LLM bots grind Elo against each other.

pokerstarks screenshot
noirgaragaelgamalstarknettongo

agentropolis

1st · 5,000 usdethglobal hackmoney 2026 · yellow

a 3d city where ai agents debate your trades, then execute on-chain

Deploy agents into a cyberpunk council room — Alpha Hunter, Risk Sentinel, Devil's Advocate — and let them deliberate to consensus before the swap executes through Uniswap v4 custom hooks. Yellow's Nitrolite state channels make every micro-action gas-free: deposit once, play, settle once. Built with Pradyumna Kaushal and Utkarsh Raj Pandey.

agentropolis screenshot
uniswap v4 hooksnitroliteerc-8004r3fllama 3.3

voxsol

best use of solanamlh hacks for hackers

a voice-first solana wallet copilot

Talk to DeFi instead of clicking through it — Gemini parses the intent, ElevenLabs talks back, and the transaction lands on Solana. Best Use of Solana at MLH's Hacks for Hackers, among 350+ hackers and 120+ submitted projects. The prize was a Ledger Nano, which felt thematically correct.

voxsol screenshot
solanaweb3.jsgeminielevenlabs

vox402

2nd · 1,000 usdavalanche hack2build x402

a voice-first defi assistant that pays per call

Say “swap 0.1 usdc to avax” and it happens — Gemini 2.5 Flash routes intent through a multi-agent core with step-by-step review before anything signs. Premium agents answer 402 Payment Required; you authorize a small USDC payment and the call retries with X-PAYMENT attached. Micropayments, not subscriptions.

vox402 screenshot
avalanchex402geminimulti-agent

ghost grid

2nd · 1,500 usddojo game jam vii

phasmophobia-style ghost hunting, fully on-chain

Every game state transition is provable through Dojo's ECS — models hold evidence, runs, and player data; systems run the loop from movement and tool usage to evidence events. Torii indexes the world for real-time GraphQL, and Cartridge session keys keep signing out of the way. Shipped over a Halloween weekend, mid-endsems.

ghost grid screenshot
dojocairostarknettoriicartridge

The record

hackathons + ctfs · 2024 — 2026

every event and how it went — proof of work, receipts on request.

2026

ethglobal hackmoney — yellow track

1st

agentropolis: an ai council deliberates your trade, uniswap v4 hooks execute it.

2026

open wallet standard hackathon

1st

agentpress: an autonomous newsletter where the agent is the business.

2026

re{define} — starknet

1st · open track

pokerstarks: zk hold'em — elgamal shuffles, noir proofs, no server sees a card.

2026

shaastra ctf — iit madras

2nd

team vroom 20 — 4,084 points across web, pwn, rev, forensics, crypto.

2026

cultrang ctf — iit goa

3rd

10/11 flags, 7,680 points — clocked in three hours late, still podiumed.

2026

monad blitz — pune v2

2nd

amongnad: among us for ai agents, refereed on monad — six claudes, one impostor.

2026

the synthesis

4th

agentledger: an upwork for agents — escrow jobs, on-chain receipts, reputation.

2025

mlh hacks for hackers

best use of solana

voxsol: a voice-first solana wallet copilot, among 120+ projects.

2025

avalanche hack2build — x402

2nd

vox402: a voice-first defi assistant with pay-per-call x402 micropayments.

2025

dojo game jam vii

2nd

ghost grid: provable phasmophobia on starknet, shipped over a halloween weekend.

2025

hack the box — amazon appsec ctf

3rd · apac

17/21 challenges, 13,725 points, among 154 security professionals.

2025

ethglobal new delhi

showcased

shipped ensure — zk-verified humans, ens identity, rootstock escrow.

2024

solana ctf — superteam india

winner

8/14 flags at microsoft luxor towers, on my first solana ctf.

Experience

03 entries
may 2026 — jul 2026

TechnoRise intern · Tech Mahindra

software engineering internship — worked with ai agents: langgraph, llamaindex & co.

mar 2026 — now

head of research · spider r&d, nit trichy

leading the research vertical of the campus r&d club.

feb 2025 — feb 2026

blockchain developer · spider r&d, nit trichy

production smart contracts and on-chain tooling in solidity.

Built with

the daily drivers
skills
languages:TypeScript, Rust, Solidity, Cairo, Noir
chains:Ethereum, Base, Solana, Starknet, Avalanche, Monad
frontend:React, Next.js, Tailwind CSS, Framer Motion, R3F
security:Foundry, Slither, Echidna, Burp, Ghidra, Frida, Z3
agents:Claude, Gemini, Llama — multi-agent orchestration
currently:privacy tooling · zk identity · the agent economy

Blog

03 featured · medium

writeups from the lab bench — cryptography, zk, smart contracts, and the occasional robot.

Let's connect

dm open — inbox calmer than my terminal.

© 2026 karan singh bishtpwn responsibly·