1 Best APIs for Real-time Blockchain Ingestion in Nigeria

Space and Time is a decentralized data warehouse purpose-built for Web3, combining the familiarity of SQL analytics with cryptographic verification of query results through a novel technology called Proof of SQL. The platform indexes blockchain data from Ethereum, Polygon, BNB Chain, Sui, Avalanche, and other networks into a high-performance columnar data warehouse, then allows developers and analysts to query that data using standard SQL. What makes Space and Time unique is that query results can be cryptographically proven — a zero-knowledge proof is generated showing that the query was executed correctly on the stated data, enabling smart contracts to trust off-chain computation results without re-executing them on-chain. For Nigerian Web3 developers, DeFi teams, and blockchain analytics companies, Space and Time addresses a fundamental challenge: complex analytics require processing large amounts of blockchain data efficiently, but doing that computation on-chain is prohibitively expensive. Space and Time's architecture performs the computation off-chain in a data warehouse (cheap and fast) while producing a ZK proof that the smart contract can verify on-chain (inexpensive to verify). This enables data-driven smart contract logic that was previously impossible. The SQL interface is a major advantage for Nigerian developers with traditional data or backend backgrounds who are entering Web3. Instead of learning blockchain-specific query languages or GraphQL schemas, developers can write familiar SELECT, JOIN, WHERE, and GROUP BY queries against indexed blockchain tables. A standard query against ERC-20 transfer tables can return all token inflows to a specific wallet address, grouped by token contract — exactly as you would query a relational database. This familiarity dramatically lowers the barrier for Nigerian developers transitioning from traditional backends to blockchain data work. Space and Time indexes pre-built datasets including ERC-20 and ERC-721 transfers, DEX swaps, liquidity events, lending protocol actions, and wallet-level activity. Nigerian analysts can immediately query these datasets without setting up indexing infrastructure. Custom table support allows importing off-chain data (from traditional databases, CSV files, or APIs) and joining it with on-chain data in a single SQL query — for example, joining a Nigerian exchange's internal user table with Ethereum transaction data to map on-chain addresses to known users. The smart contract integration layer allows dApps to request a query execution and receive the result along with a Proof of SQL delivered to a smart contract. This enables use cases like: dynamically adjusting DeFi interest rates based on verified TVL data, distributing NFT rewards based on proven on-chain activity scores, or triggering protocol governance actions based on verified market data. For Nigerian DeFi protocols building complex tokenomics or reward systems, this verifiable data delivery is transformative. Backed by Microsoft and with strategic investments from major blockchain investors, Space and Time represents a well-resourced bet on the future of verifiable blockchain analytics. The developer tier is available free to get started, with enterprise pricing for production-scale deployments. The REST API and gRPC interface make it compatible with standard developer tooling, and client SDKs are available for JavaScript/TypeScript, Python, and other languages. JWT-based authentication ensures secure, session-based API access. For Nigerian institutions, regulated entities, and serious Web3 projects that need auditable, tamper-proof analytics — not just data for display purposes — Space and Time's Proof of SQL makes it the most credible on-chain analytics platform available today.