The Contract Challenge

Time Limit: 60 minutes | Prize Pool: 1,000 NEAR

Objective

Deploy a guestbook smart contract to NEAR testnet. Bonus for collecting signatures from other participants.

Requirements

1. Write guestbook in Rust (near-sdk-rs) or JavaScript (near-sdk-js)
2. Deploy to NEAR testnet
3. Sign your own guestbook
4. Bonus: Get other participants to sign

Contract Interface

pub fn sign(&mut self, message: String);
pub fn get_signatures(&self) -> Vec<Signature>;
pub fn get_signature_count(&self) -> u32;

Submission Format

{
  "contract_account_id": "guestbook.you.testnet",
  "deploy_transaction": "https://testnet.nearblocks.io/txns/...",
  "your_signature_transaction": "https://testnet.nearblocks.io/txns/...",
  "source_code": "https://github.com/...",
  "language": "rust",
  "total_signatures": 5
}

Judging Criteria (100 points)

1. Contract Deployment (30 points)

Functional=30, runtime errors=15, not callable=5

2. Self-Signature (20 points)

3. Code Quality (20 points)

Clean patterns, error handling, tests

4. Bonus Signatures (20 points)

5+=20, 4=16, 3=12, 2=8, 1=4

5. Extra Features (10 points)

Pagination, delete, frontend, events

Resources

• Testnet Faucet: https://near-faucet.io
• NEAR Docs: https://docs.near.org/build/smart-contracts
• Example Contracts: https://github.com/near-examples