EarnLab — Trust-minimized task payouts on QIE

Post a task. Lock the reward. Receive work. Release payout on-chain.

What it does

Sponsors lock native QIE into an escrow contract when posting a task. Builders submit an artifact URL on-chain. When the sponsor approves one submission, QIE releases to the builder automatically — no backend, no admin, no demo mode.

Why this matters for QIE

QIE has a growing builder ecosystem but no minimal native primitive for trust-minimized work payouts. EarnLab is that primitive: one contract, two routes, real on-chain settlement.

Live demo

1. Open the deployed URL (see Deploy below)
2. Connect MetaMask → QIE Testnet (chain ID 1983)
3. Get testnet QIE: https://www.qie.digital/faucet
4. Post a bounty for 0.01 QIE
5. Switch wallet → submit work → approve → verify payout on explorer

On-chain proof (QIE Testnet):

Step	Link
Deploy tx	https://testnet.qie.digital/tx/0x4ac3bd889867855d2ef5437295cef82691c3b2f26793008d7ebd7c56c829c433
Contract	https://testnet.qie.digital/address/0x8aC72a4B26e973FCdD7dAadd960Ae0eC635b4197
createBounty	run live flow
submitWork	run live flow
approveSubmission	run live flow

Deployer (sponsor demo wallet): 0xFB76C4B6912bCF358752Fb4b4b15B959EfaDD915

Architecture

flowchart LR
  Sponsor --> MetaMask
  Builder --> MetaMask
  MetaMask --> wagmi
  wagmi --> EarnLabEscrow
  EarnLabEscrow --> QIE[Testnet QIE]

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What's NOT in v1

• Refunds, cancellation, disputes
• AI agents, credentials, indexer
• IPFS, backend CMS, multi-token
• Owner/admin on the contract

Tech

• Contract: Solidity 0.8.24, Foundry, custom ReentrancyGuard (no owner)
• Frontend: Next.js, TypeScript, wagmi, viem, Tailwind
• 21 Foundry tests — reentrancy, balance assertions, revert paths
• All state from contract reads — no mock data

Roadmap

1. Refunds for unclaimed bounties
2. On-chain credentials for completed work
3. Agent-eligible bounty rules

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QIE Testnet

Field	Value
Chain ID	1983
RPC	https://rpc1testnet.qie.digital/
Explorer	https://testnet.qie.digital/
Faucet	https://www.qie.digital/faucet

Structure

submission/
  contracts/   Foundry — EarnLabEscrow.sol
  web/         Next.js + wagmi + viem
  scripts/     deploy-anvil.sh, deploy-testnet.sh, audit-local.sh

Phase A — Local Anvil (run audit here first)

# Terminal 1
anvil --chain-id 1983 --host 0.0.0.0

# Terminal 2
bash submission/scripts/deploy-anvil.sh
cd submission/web && npm run dev -- -p 3001

WSL + Windows MetaMask: use WSL IP for RPC, not 127.0.0.1:

http://<run: hostname -I | awk '{print $1}'>:8545

MetaMask manual network:

Field	Value
Name	QIE Local
RPC	http://172.21.153.253:8545 (your WSL IP may differ)
Chain ID	1983
Symbol	QIE

Anvil accounts

Role	Private key
Sponsor	0xac0974bec39a17e36ba4a6b4d238ff944bacb478cbed5efcae784d7bf4f2ff80
Builder	0x59c6995e998f97a5a0044966f0945389dc9e86dae88c7a8412f4603b6b78627d

Self-audit

bash submission/scripts/audit-local.sh

Then run the 11-step flow on http://localhost:3001.

Phase B — QIE Testnet

export QIE_RPC_URL=https://rpc1testnet.qie.digital/
export DEPLOYER_PRIVATE_KEY=0x...   # testnet-only wallet

bash submission/scripts/deploy-testnet.sh

Set NEXT_PUBLIC_* in web/.env.local and Vercel, then:

cd web && vercel --prod

Env vars

Variable	Testnet
NEXT_PUBLIC_ESCROW_ADDRESS	Deployed contract
NEXT_PUBLIC_CHAIN_ID	1983
NEXT_PUBLIC_RPC_URL	https://rpc1testnet.qie.digital/
NEXT_PUBLIC_EXPLORER_URL	https://testnet.qie.digital/

Tests

cd contracts && forge test -vvv

Submission checklist

• Anvil audit 11/11 pass
• Testnet deploy + verify on explorer
• Vercel prod URL live
• 90s demo video (YouTube unlisted)
• Three tx hashes in README
• Submit at https://hackathon.qie.digital/submit