GHAISAN KHOIRUL BADRUZAMAN

Sole builder, directing AI agents end to end.

A five-pillar platform (a marketplace, a builder, banking/payments, a registry, and a protocol) for an economy of AI agents, packaged as a playable JRPG so the infrastructure is explorable rather than abstract.

PROBLEM

Agent-economy infrastructure is abstract and hard to convey.

APPROACH

Modeled five concrete pillars and made them a navigable game world; directed the whole build as an orchestrator.

OUTCOME

Gallery-featured at Anthropic's hackathon; the lead external credential.

Built within a team (Team Cyber Crown) and orchestrated end to end.

An autonomous ransomware-defense system for a bank under financial-regulator supervision: five signal evaluators fuse into a mass-encryption verdict, a four-position autonomy dial lives inside the containment module rather than on top of it, an advisory model that cannot by type issue an action writes the incident analysis, and every action is appended to a hash-chained audit record before the command is ever sent.

PROBLEM

An intruder sits inside the network for days unseen and then finishes the destruction in under six minutes, so a defense that waits for a human to read a ticket loses on arithmetic, not on skill.

APPROACH

Built backwards on purpose — the dial, the audit chain and the fail-safes exist from the first line and detection is fitted inside them, so the containment module has no path to act without passing the dial and the model layer cannot issue an action at all.

OUTCOME

Deployed live with a public command dashboard: 186 of 190 tests passing, all 24 simulated ransomware families detected with at most 2 files lost against a budget of 10, and zero destructive false positives across 320 benign workloads.

Lead engineer and architect (Team Daulat), directing AI agents.

Makes village-cooperative fund flows transparent for the members who own them: four parallel inspector agents (conflict of interest, transaction anomaly, financial health, process compliance) plus an adjudicator read the ledger, and the server — never the model — issues a plain-language verdict and evidence-backed questions any member can raise at the annual meeting. Trust first, then transparency, then participation.

PROBLEM

Public money flowed into 83,383 new village cooperatives, but the officers who spend it also keep its books — the members who legally own it have no way to see where it goes.

APPROACH

Four forensic agents plus an adjudicator read the ledger in parallel; the server derives the verdict from grounded findings, so no model or officer can color a cooperative greener or redder than its evidence — members carry the machine-found, evidence-backed questions to the annual meeting.

OUTCOME

First place at the Ministry of Cooperatives' Hackathon Digital Cooperatives 2026 (Team Daulat, 518.0 points), with the ministry committed to mentoring winners toward field implementation; its economic rights are being ceded to the Republic, the creators' moral rights retained.

Co-built with one collaborator; designed the system and directed the agent fleet.

Dissects viral narratives whose individual facts all check out and whose causal claims are never established: it renders the causal skeleton a story implies, labels every link by evidence status, and shows beside it the branches the story priced at zero — never issuing a verdict and never scoring an outlet.

PROBLEM

The most damaging misinformation contains no false facts — fact-checking is structurally blind to a broken arrow between two true things.

APPROACH

A thirteen-agent editorial fleet produces each dissection at build time behind deterministic gates; two of the agents are judges that can refuse publication, and the read path ships as sealed static files with no server, key or model call.

OUTCOME

Eleven dissections published across two packs, 48 verified sources and 147 sourced figures with none unsourced; the two gate agents blocked five of the eleven before they shipped, and all seven written refusals are public in the repository.

Built within a team (Team Rajendra) and orchestrated.

A multi-agent maritime intelligence system for illegal-fishing enforcement in Indonesian waters: it fuses Sentinel-1 radar detections with AIS tracks into a single multi-sensor evidence file shaped to Indonesian rules of evidence, computes each file's status on the server from the artifacts that exist rather than inferring it with a model, and abstains outright when the evidence conflicts or sensor coverage is thin.

PROBLEM

Indonesia watches 6.4 million km² of sea with shrinking patrol capacity while vessels go dark before a target zone, spoof position and swap identity.

APPROACH

Deterministic perception is separated from agent reasoning: agents may propose but never decide, every artifact id must resolve in the grounding index or it is discarded, and a pure server-side function derives CONFIRMED, INDICATED or ABSTAIN from what the sensors actually support.

OUTCOME

Deployed across four role-specific surfaces with the gate proven load-bearing: disabling any one layer over 73 golden investigations lets failures through, while the full gate leaks zero.

Built within a team (Team 3V) and orchestrated.

A plant knowledge hub that answers engineering questions with evidence packets or abstains when the corpus cannot answer, classifies a request to defeat a protective function in deterministic code before any model call, measures which failure knowledge was never written down, and drafts the missing One Point Lesson into the plant's existing prepared, reviewed and approved chain.

PROBLEM

Plant engineers cannot get trusted, source-cited answers at the moment of need, and no mechanism even knows which knowledge is missing.

APPROACH

Five mechanical guarantees enforced by schema, gate and hash rather than prompt wording: no number is generated, procedures are never paraphrased, provenance or nothing, drafts stay physically separate from the retrieval path, and safety intent is classified before any model call.

OUTCOME

A working hub in which only a human can publish — the single code path from draft to published tables is one gated transaction that increments the corpus version and recomputes coverage.

Sole builder via the Crown methodology.

Helps biology students produce plant lab reports with taxonomy, identification, morphology, a deterministic floral formula and diagram, and citations that are verify-gated, organized into explicit source tiers so nothing is fabricated.

PROBLEM

Students need accurate lab reports; AI tools fabricate taxonomy and citations.

APPROACH

Four-tier source trust, identification gated by confidence, citations gated by verification, deterministic morphology output.

OUTCOME

Deployed June 2026 after a gated, adversarially audited build.

Sole builder.

Reads a public project and works out where it actually stands — which milestone it has reached, which gates behind it were never closed, and which actions just became unsafe because of where it now sits — proving each finding with evidence the owner can check rather than asking them to trust a judgement.

PROBLEM

Producing code is now a commodity; knowing what to produce, in what order, and what forbidden today was free yesterday is not — and the people who need that most do not know what to ask for.

APPROACH

Position is read from observable facts and set by the highest signal met rather than an average; most checks are deterministic scripts rather than model judgement, and anything that could not be checked is reported as not checked rather than shown as passing.

OUTCOME

Live in early access, reading public repositories with no clone step and no stored code; autonomous building appears on the site as roadmap, in future tense, deliberately.

Built within a team of three with a supervising lecturer, and orchestrated.

A retrofit box and platform that turns a shared electric irrigation pump into a prepaid water station billed by the cubic metre under a single utility meter: the box measures head and power every second and derives volume from pump physics rather than a water meter, deducts a prepaid balance per cubic metre with the measurement uncertainty printed on the receipt, and reconciles monthly against the utility's own kWh bill.

PROBLEM

One electric pump serves dozens of farmers and there has never been a way to split its bill, so cooperatives fall back on flat dues or hourly rent that punishes the farmer whose turn falls on a worn pump.

APPROACH

Meter the physics instead of the water: derive cubic metres from head and power, charge a prepaid balance per cubic metre, set aside a maintenance levy automatically, and reconcile the whole month back to the utility meter.

OUTCOME

A public site carrying the case at TRL 4, pre-pilot, with every economic figure labelled as a 20,000-scenario Monte Carlo simulation and captioned as pre-pilot working numbers rather than field results.

Builder within a team (Kelompok B5).

A drug-safety and clinic-management application built around a multi-source drug catalog of 20,828 entries (openFDA, RxNorm, DailyMed), delivered as both a web showcase and a bundled desktop app.

PROBLEM

Front-line clinics need drug-safety checks and patient management.

APPROACH

A 20,828-row catalog with safety checks, network and geographic visualizations, dual web and desktop targets.

OUTCOME

Web showcase deployed; desktop app bundled with a local Flask backend.

Co-built (team Duopoly) and orchestrated.

An AI-resident development environment that renders a codebase as a navigable 3D city with several resident AI agents and product modes, turning code structure into an explorable place.

PROBLEM

Codebases are hard to perceive structurally.

APPROACH

A 3D-city metaphor with resident agents and modes, built through a multi-wave orchestration.

OUTCOME

Deployed to a Kubernetes cluster for the hackathon.

Sole designer, directing AI agents from architecture to business case (concept and architecture stage).

Assembles a panel of specialist critic agents to adversarially review an experimental plan in the life sciences before it is executed, grounding every objection in primary literature and reference databases, with a router, parallel critics, a separate adjudicator, and a traceable risk score.

PROBLEM

The life sciences lose an estimated tens of billions yearly on experiments flawed in design, catchable before any bench work.

APPROACH

A router selects critics; specialists reason in parallel; an adjudicator weighs them; every risk point traces to a finding.

OUTCOME

A 28-page product requirements document; the largest system designed to date.

Sole builder and system designer.

A doctrine, policy engine and evidence index that carries one idea document to a production-grade product inside a coding agent, built around the single moment where everything is decided — when an agent says the work is finished — and designed so that finished work, work that only survives the happy path, and work that does not exist are no longer indistinguishable from outside.

PROBLEM

A system without doctrine produces three outputs that sound equally confident: work that is genuinely finished, work that collapses off the happy path, and work that does not exist but is reported as existing.

APPROACH

Enforcement lives in code rather than in prose — a pure policy function decides what an action's stage permits, the index is filled mechanically by hooks and scans rather than by asking an agent to remember, and the agent that writes code is denied the evidence paths at the tool level.

OUTCOME

263 eval fixtures green across nine components, each shipping its own card and known-limitations field; its authority is deliberately capped one stage below the line where losing data means losing it for real.

Sole builder and quant designer.

A single-user trading system for gold (XAUUSD) on a MetaTrader 5 demo, combining a growing strategy library, a context router, and a statistical admission gate (regime detection, volatility modeling, combinatorial cross-validation, deflated Sharpe) so it can search strategies while remaining statistically honest about which have real out-of-sample edge.

PROBLEM

Most retail trading systems overfit and lie to themselves about edge.

APPROACH

A statistical admission gate that rejects strategies without honest out-of-sample edge; the cleanest example of 'no false greens.'

OUTCOME

Paused honestly after confirming directional intraday gold prediction is noise-dominated net of realistic costs.

Sole builder.

An AI dashcam that detects traffic violations in real time, cites the relevant traffic law, and cryptographically seals the evidence, protecting drivers from false claims while keeping the record tamper-evident.

PROBLEM

Drivers face false claims and disputed road incidents.

APPROACH

On-device detection plus cryptographically sealed, tamper-evident evidence citing the law.

OUTCOME

Deployed civic-tech prototype.

Built within a team and orchestrated.

A mobile-first predictive supply-chain tool for Indonesian food-and-beverage brands, forecasting demand and surfacing operational signals for multi-outlet operators.

PROBLEM

Multi-outlet F&B operators lack forward visibility into demand and supply.

APPROACH

A PWA with geospatial visualization and Vertex AI forecasting, demoed on a multi-outlet persona.

OUTCOME

Hackathon prototype.

Sole builder; a design-and-motion-heavy prototype.

A decision-support tool for a Jakarta transit agency that forecasts arrival-time reliability as probability bands and synchronizes intermodal transfers across the city's rail and bus systems.

PROBLEM

Riders and operators lack reliable arrival-time and transfer information.

APPROACH

Probability-band forecasts and intermodal synchronization in a control-room aesthetic.

OUTCOME

A polished design-forward prototype.

Sole builder.

An interactive, scroll-driven explainer that walks through the full statistical pipeline of a real biology study (eels in a river), chaining ten formulas (assumption checks, the test, effect size, and a nonparametric alternative) into one connected argument.

PROBLEM

Statistical methods are opaque to most readers.

APPROACH

A scrollytelling chain of ten formulas with ambient canvas visuals making each step legible.

OUTCOME

An interactive educational explainer.

Sole builder.

A zero-dependency, truecolor terminal engine that types lyrics over an evolving hand-drawn cosmos as a three-act film, with a web port; pure standard-library rendering at high frame rates.

PROBLEM

Terminal output is rarely treated as a cinematic medium.

APPROACH

A double-buffered ANSI compositor renders a three-act lyric film from the standard library alone.

OUTCOME

A published terminal art piece; the seed of the ASCII aesthetic.