Scalable Custom Blockchain Ecosystem

I’m building a fully-decentralized blockchain purpose-built for frictionless financial transactions, game-centric dApps, and an integrated NFT marketplace. The chain must scale from day one and expose clean APIs so our in-house web team can plug the front-end straight in.

Core deliverables
• Production-grade mainnet with automated, horizontally scalable node deployment
• Testnet—including a faucet—for developer onboarding and QA
• On-chain wallet solution (web and CLI) with key management best practices
• Native staking module with configurable reward schedules and slashing logic
• Foundational smart-contract layer so future contracts can be deployed without forking the chain
• Buildable Custom dApps
• NFT marketplace module supporting mint, buy, sell, auction, and royalty enforcement
• REST/JSON-RPC or gRPC API endpoints documented for our web team’s consumption

Acceptance criteria
1. Mainnet achieves finality in ≤ 5 seconds under a 100-node test load.
2. Faucet dispenses test tokens and enforces daily limits.
3. Staking rewards visible in wallet UI and payable on-chain.
4. Smart-contract layer passes audit scripts and allows upgradeable contracts.
5. NFT marketplace handles 10k concurrent mint/sell operations without downtime.
6. All modules covered by integration tests and deployment scripts (Docker/K8s or equivalent).
7. Complete technical documentation and hand-over session recorded for our dev ops team.

Feel free to propose your preferred tech stack—whether Substrate, Cosmos SDK, or a ground-up Rust/Go implementation—so long as it meets the decentralization and performance targets above.