Karan Singh Bisht

Karan Singh Bisht

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

I build AI systems that transact and protocols that prove what they did. Agents coordinate in typescript langgraph, move money through x402, and settle through smart contracts in solidity rust. After dark I break the trust assumptions — ask the ctf scoreboards.

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 agent economies, privacy systems, and 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

09 shipped · hackathon-born

nightpool

overall winnermlh midnight hackathon · july 2026

private to the market, provable to an auditor

A hidden-order RFQ desk and sealed-bid batch auction on Midnight. Order size, price, and counterparties stay behind commitments; zero-knowledge proofs settle each fill, while selective disclosure lets an auditor verify a trade against its on-chain fingerprint.

nightpool screenshot
midnightcompactzk commitmentssealed-bid auctions

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

mlh midnight hackathon

overall winner

nightpool: hidden-order rfq and sealed-bid auctions with zk settlement and selective audit disclosure.

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

8/14 flags

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, Midnight
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·