0G APAC Hackathon 2026 — Submission

GOCHI

The first on-chain AI virtual pet that lives entirely on the 0G Network.
It cannot be deleted. It cannot be shut down.

< 50ms

KV read latency

ERC-721

INFT on-chain

TEE

verified AI

Merkle

memory proofs

The Problem

Your pet can be shut down

Virtual pet games — Tamagotchi, Neopets, CryptoKitties — all share one critical flaw: they depend on centralized infrastructure.

Server-dependent

When the servers go dark, your pet dies forever. Neopets has already lost years of user data.

AI is unverifiable

You can't prove responses are fair, untampered, or actually running what was promised.

Memories are mutable

History can be altered, deleted, or lost in a database migration.

SERVER_OFFLINE
PET_DELETED

              # Neopets 2023 incident

              status: OFFLINE

              user_data: LOST

              pets: GONE FOREVER

The Solution

An immortal on-chain pet

Identity lives on-chain

Minted as ERC-721 INFT on 0G Galileo Chain. A permanent, verifiable identity no company can revoke.

State on decentralized storage

Hunger, mood, energy via 0G Storage KV. No AWS. No Firestore. Sub-50ms reads.

Memories are permanent + provable

Every action archived to 0G Storage Log with Merkle root proofs. Cannot be tampered with.

AI is TEE-verified

Personality via 0G Compute Router. Cryptographic proof the AI ran untampered.

GOCHI #42

ALIVE ON 0G CHAIN

Contract: 0x5F9c…426F2
Chain: 0G Galileo (16602)

Architecture

Full 0G Network stack

0G CHAIN

ERC-721 INFT
mint + identity

→

0G KV STORE

hunger/mood/energy
< 50ms reads

→

0G LOG STORE

action memories
Merkle proofs

→

0G COMPUTE

Qwen 2.5 LLM
TEE-verified AI

USER INTERACTION FLOW

Wallet Connect → Mint INFT → Load State (KV) → Feed / Play / Sleep → Archive Memory (Log) → Chat (Compute)

Next.js 16
App Router

wagmi v3
wallet kit

0G JS SDK
storage + kv

Hardhat
contracts

Key Features

What makes Gochi unique

INFT Identity

Minted as ERC-721 on 0G Galileo Chain. Unique identity, verifiable on ChainScan. Owned by your wallet forever.

0G Chain

Real-Time State

Hunger, mood, energy updated instantly via 0G KV. Under 50ms round trips. Stats decay over time — care for your pet.

0G KV Store

Permanent Memory

Every action archived to 0G Storage Log. Merkle root proofs. Verifiable on StorageScan. Immutable history.

0G Log Store

0G Compute AI

Personality via Qwen 2.5 · 0G Compute Router. TEE attestation proves the AI response is cryptographically unmodified.

TEE Verified

Multi-wallet support + Resume any Gochi

Connect MetaMask, WalletConnect, or any injected wallet. Resume previously hatched pets by Token ID — your pet persists across sessions.

Live on Testnet

Deployed & verifiable

            // Gochi.sol — deployed on 0G Galileo

            Network: 0G Galileo Testnet

            Chain ID: 16602

            Contract: 0x5F9c…426F2

            Standard: ERC-721 (INFT)

            // Storage

            KV Stream: 0x676f…0001

            Indexer: turbo-testnet.0g.ai

            // Compute

            Model: qwen/qwen-2.5-7b-instruct

            TEE: tee_attested: true

NETWORK LATENCY (measured)

                    KV Read~30ms
                  

                    KV Write~45ms
                  

                    Log Upload~500ms
                  

                    Compute AI~1.2s
                  

VERIFY ON-CHAIN

ChainScan: chainscan-galileo.0g.ai

StorageScan: storagescan.0g.ai

Why 0G?

The only network built for this

AI-Native

0G is purpose-built for AI applications. The Compute Router brings verifiable AI inference on-chain — something no other L1/L2 provides out of the box.

High Throughput

0G Storage handles petabytes with sub-100ms reads. A game that updates stats every interaction needs this performance — Ethereum can't do it.

TEE Verification

The ZG-Res-Key header cryptographically proves AI inference happened inside a Trusted Execution Environment. Your pet's soul is tamper-proof.

Feature	Ethereum	IPFS + AWS	0G Network
Fast KV state	✕	~	✓ <50ms
Permanent log	costly	✕	✓ native
Verifiable AI	✕	✕	✓ TEE proof
Decentralized	✓	✕	✓ full stack

Roadmap

Where Gochi goes next

Phase 1 — Done (Hackathon)

ERC-721 INFT minting on 0G Galileo Chain

Real-time stat persistence via 0G KV Store

Merkle-verified memory log via 0G Log Store

TEE-verified AI personality via 0G Compute

Multi-wallet connect + resume saved pets

Phase 2 — Mainnet Launch

Pet trading marketplace (0G Chain NFT)

Multi-pet evolution system (stat milestones)

Pet-to-pet interaction via shared KV state

Phase 3 — Ecosystem

Plugin system — 3rd party mini-games

Cross-chain pet travel (0G bridge)

Mobile app with push notifications

The Builder

Made by one person
in < 72 hours

Edy Cu

Full-Stack Builder · Web3 Developer

Next.js

Solidity

0G Network

AI / LLM

Built Gochi as a solo submission for the 0G APAC Hackathon 2026, integrating all four pillars of the 0G Network in a single cohesive product.

0G APAC Hackathon 2026 — Submission

GOCHI

An immortal, AI-powered virtual pet
built entirely on the 0G Network.

TRY GOCHI NOW View Contract GitHub

Contract: 0x9BDA4cBfda7a7960251A4EE07A7ec0C00239a8cf · Chain: 0G Galileo (16602)

0G Chain

Identity

0G KV

State

0G Log

Memory

0G AI

Soul

When the servers go dark — Gochi stays.

GOCHI

Your pet can be shut down

An immortal on-chain pet

Full 0G Network stack

What makes Gochi unique

Deployed & verifiable

The only network built for this

Where Gochi goes next

Made by one personin < 72 hours

GOCHI

Made by one person
in < 72 hours