Smart Contract Development

Keyko provides expert smart contract development services for Web3 projects, covering the full lifecycle from design to deployment. The team has deep expertise in developing secure, scalable smart contracts across multiple blockchain platforms including Ethereum, Celo, NEAR, and Optimism-based Layer 2 chains.

Key Capabilities

Multi-chain expertise: Ethereum, Celo, Filecoin, NEAR, Optimism Stack

Advanced implementations: Zero-knowledge soulbound tokens (zkSBT), custom token standards, NFT contracts, DEX protocols, lending platforms, yield optimization, and sophisticated token mechanisms including staking systems, presales, vesting schedules, governance logic, and yield farming

Security-first approach: Implementation of best practices, thorough testing, and security auditing with exceptional security standards given the financial value at risk in DeFi protocols

Protocol engineering: Building foundational blockchain protocols and consensus mechanisms

DeFi & NFT Specialization

Keyko's smart contract expertise extends to specialized domains:

DeFi protocols: Automated market makers (AMMs), order books, liquidity pools, collateralized lending, flash loans, interest rate models, vaults, auto-compounding, staking, bonding, rebasing, and ve-tokens. Production experience includes Bancor V2 (full-stack implementation with DAO voting functionality) and Aave (NFT-backed loans functionality).

NFT systems: NFT marketplaces with bidding, auctions, royalties, minting platforms with generative art engines, custom NFT standards (ERC-721 extensions, soulbound tokens, composable NFTs), and cross-chain NFT functionality. Notable implementations include zkSBT for Masa Network, music NFT marketplace for Seatlab, and carbon credits NFTs for E.ON Energy.

Delivery Approach

Keyko follows a comprehensive process covering solutionizing (PoC, MVP, user stories), planning (epics, stories, tickets), development (build/dev test), QA/UAT, deployment, and go-live support. Their engineers have battle-tested experience delivering complex smart contract systems that handle real-world transaction volumes and significant TVL (Total Value Locked).

Notable Results

The team has deployed smart contracts for major Web3 projects including Masa Network (1.4M users with zkSBT identity system), Mode Network (L2 chain), Filecoin (Fil+), Celo mainnet, Bancor V2 (with impermanent loss protection), Aave (NFT-backed loans), VitaDAO (world's first IP-NFT transaction), and NEAR Foundation (crowd sale NFT tokens with vesting). Their work includes implementing novel token mechanics, governance systems, and DeFi protocols that have collectively contributed to over €8B in ecosystem market cap.