4 Best APIs for Archive Node in Nigeria

Ankr is a Web3 infrastructure platform offering both free public RPC endpoints and premium dedicated node services for over 50 blockchains. Founded in 2017 and headquartered in San Francisco, Ankr operates a globally distributed network of blockchain nodes across multiple cloud providers and bare-metal servers, with a philosophy of decentralized infrastructure that reduces dependence on single providers. For Nigerian Web3 developers, Ankr is particularly valuable for its free public RPC endpoints that require no API key — making it the fastest entry point to multi-chain blockchain connectivity for development, testing, and early production use. The free public RPC endpoints are Ankr's most accessible offering. Developers can access Ethereum, Polygon, BNB Smart Chain, Avalanche, Fantom, Arbitrum, Optimism, Solana, and dozens of other chains without registering an account or obtaining an API key. The public endpoints are shared among all users and subject to shared rate limits, but they provide immediate connectivity for development work, hackathon projects, and low-traffic applications. For a Nigerian blockchain developer starting out, being able to connect to any major chain in seconds by simply specifying the Ankr public RPC URL in their Web3 library is a significant convenience. Premium endpoints provide dedicated node access with substantially higher rate limits, lower latency from dedicated infrastructure, and SLA-backed uptime guarantees. Premium accounts at Ankr are significantly less expensive than Alchemy or QuickNode for equivalent throughput on many chains, which has made Ankr popular for cost-conscious Nigerian teams scaling to production. Premium endpoints receive a unique API key embedded in the endpoint URL, isolating traffic from the public shared pool. Advanced APIs built on top of the node infrastructure provide pre-indexed blockchain data similar to Moralis — NFT API for wallet NFT portfolios, Token API for ERC-20 balances, and Query API for historical blockchain data. These enhanced endpoints are available on premium plans and eliminate the need for custom data indexing for common Web3 data patterns. The breadth of 50+ supported chains is one of Ankr's strongest selling points. Beyond the major EVM chains, Ankr supports many emerging chains (Gnosis, Celo, Aurora, Klaytn, Moonbeam, Telos, and many others) that are not covered by all node providers. For Nigerian Web3 developers exploring newer blockchain ecosystems or building cross-chain applications that span multiple less-common chains, Ankr often provides coverage that competitors lack. WebSocket endpoints are available for all supported chains on both public and premium tiers, enabling real-time blockchain event subscriptions for Nigerian applications requiring live data feeds, transaction monitoring, or event-driven smart contract interactions. Ankr's decentralization philosophy extends to its node operator network — Ankr allows independent node operators to join the network and serve requests, distributing infrastructure ownership beyond a single company. This aligns with Web3 values and provides a degree of censorship resistance that centralized node providers cannot offer. For Nigerian developers building applications that prioritize decentralization as a core value, Ankr's infrastructure model is ideologically consistent. Ankr also operates a liquid staking platform (ankrETH, ankrMATIC, etc.) that allows crypto holders to stake assets while maintaining liquidity — a DeFi product built on their node infrastructure. While this is not directly a developer API product, Nigerian developers building on Ankr's infrastructure benefit from working with a company that has deep stake in the blockchain networks they support. Pricing for premium endpoints is competitive, with monthly plans based on request volume rather than chain count — a single subscription provides access to all supported chains at the subscribed throughput level. This bundled pricing model is advantageous for Nigerian teams needing access to many chains simultaneously without paying per-chain fees.

Dwellir is a specialized blockchain node infrastructure provider focused on the Polkadot and Substrate ecosystem. Unlike generalist node providers like Alchemy or QuickNode that serve primarily EVM chains, Dwellir specializes in Polkadot relay chain, Kusama, and the growing collection of Substrate-based parachains that make up the Polkadot ecosystem. This specialization means deeper technical expertise in Substrate node operation, better performance on Polkadot-specific RPC methods, and broader parachain coverage than generalist providers. For Nigerian Web3 developers building on the Polkadot ecosystem — whether on the relay chain itself, on Kusama (Polkadot's canary network), or on specific parachains like Acala (DeFi), Moonbeam (EVM-compatible), Astar (multi-VM), or others — Dwellir provides the specialized infrastructure needed to connect applications to these chains reliably. Polkadot's architecture differs fundamentally from Ethereum. Rather than a single monolithic blockchain, Polkadot consists of a relay chain coordinating security for many parallel chains (parachains), each with its own specific purpose and token economy. Building on this ecosystem requires connecting to specific parachain endpoints, and Dwellir maintains nodes for dozens of Polkadot parachains. Archive node access is available for queries requiring historical state data. WebSocket connections are the standard method for Polkadot/Substrate JSON-RPC communication, and Dwellir's infrastructure provides WebSocket endpoints for all supported chains. The @polkadot/api JavaScript library and Python substrate-interface use these WebSocket connections for all smart contract interactions, extrinsic submission, and state queries. For Nigerian developers who are specifically building in the Polkadot ecosystem, Dwellir is a focused provider worth evaluating. For those primarily building on EVM chains, the major EVM providers (Alchemy, QuickNode, Infura, Ankr) are more appropriate choices with broader EVM-specific tooling support. Dwellir supports multiple EVM-compatible chains alongside Substrate-based networks, enabling cross-chain application development from a single infrastructure provider. For Nigerian Web3 developers building DApps that need to interact with multiple chains, using a single provider simplifies API key management, billing, and support relationships. The free tier provides 500,000 requests per day — sufficient for active development, integration testing, and early-stage production deployments. Paid tiers scale to billions of requests per month for high-traffic DApps and institutional clients. Global load balancing across geographically distributed nodes ensures low latency for Nigerian users regardless of which specific server handles their request. Nigerian blockchain developers benefit from Dwellir's technical support and documentation, which are more accessible than running and debugging bare validator nodes. For developers entering the Polkadot ecosystem from Ethereum backgrounds, Dwellir's unified interface reduces the learning curve of connecting to unfamiliar Substrate-based networks. WebSocket endpoint support is essential for real-time DApp features — subscriptions to new block events, transaction status updates, and on-chain state changes. Dwellir's WebSocket connections are stable and managed, removing the operational complexity of maintaining persistent connection pools that would otherwise require custom infrastructure work from Nigerian development teams.

NodeReal is a blockchain infrastructure provider specializing in BNB Smart Chain with additional support for Ethereum, Polygon, and other chains. Backed by Binance and closely integrated with the BNB Chain ecosystem, NodeReal is the go-to choice for Nigerian developers building on BNB Smart Chain — offering the deepest BNB-specific tooling, enhanced BNB Chain APIs, and the fastest BNB node infrastructure due to proximity to Binance's own infrastructure. The platform provides 100 million compute units free per month, matching Alchemy's generous free tier for high-volume Nigerian applications. BNB Smart Chain is particularly relevant for Nigerian Web3 users because of its significantly lower transaction fees compared to Ethereum mainnet. While Ethereum gas fees can reach tens or hundreds of dollars per transaction during peak periods, BNB Smart Chain typically costs fractions of a cent — making DeFi, NFTs, and on-chain interactions accessible to Nigerian users who cannot afford Ethereum mainnet gas costs. Many Nigerian crypto applications choose BNB Smart Chain specifically for this cost accessibility, and NodeReal's BNB specialization makes it the optimal node provider for these deployments. Enhanced BNB APIs from NodeReal go beyond standard JSON-RPC to provide pre-indexed BNB Chain data — wallet transaction history, NFT portfolio data, account analytics, and token balances — similar to what Moralis or Alchemy enhanced APIs provide but optimized specifically for BNB Chain data. This eliminates custom indexing requirements for Nigerian applications building BNB Chain features. Archive node access enables historical state queries for any past block on BNB Smart Chain and Ethereum — essential for analytics applications, portfolio historical P&L calculations, and protocol audit tools that need to reconstruct past blockchain state. NodeReal's archive infrastructure is available on paid plans. The 100 million free compute units per month on the free plan is comparable to Alchemy's free tier, making NodeReal cost-competitive for Nigerian high-volume development. Paid plans at $99/month and above provide dedicated infrastructure with SLA-backed uptime for production deployments. For Nigerian developers building specifically on BNB Smart Chain, NodeReal combines the deep chain expertise of a specialized provider with Binance's infrastructure backing — a combination that delivers superior BNB Chain performance compared to generalist providers serving many chains with less per-chain optimization.

Helius is the leading developer platform for Solana, providing enhanced RPC node access, purpose-built Solana APIs, webhooks for real-time event monitoring, and developer tooling specifically designed for the Solana blockchain ecosystem. Founded in 2022 and rapidly adopted by many of the top Solana protocols and applications, Helius fills the same role in the Solana ecosystem that Alchemy or Moralis fills in the Ethereum ecosystem — transforming raw RPC access into developer-friendly, high-level APIs that reduce the complexity of building on Solana. Solana is one of the fastest and cheapest smart contract blockchains, with transaction fees typically below $0.001 and confirmation times under 1 second. These characteristics make Solana particularly attractive for Nigerian users and developers who need high-frequency, cost-efficient transactions. DeFi applications, NFT marketplaces, payments, and gaming on Solana are accessible to Nigerian users at a fraction of the cost of Ethereum mainnet interactions. Helius provides the infrastructure foundation for building these applications. The enhanced transaction parsing API is Helius's most immediately valuable feature for application developers. Raw Solana transactions contain instruction data that is difficult to interpret without knowing the specific program being called. Helius parses these raw instructions into human-readable transaction descriptions — identifying token swaps on DEXes, NFT purchases and sales, liquidity provision events, token transfers, and other activity types with clear labels and amounts. Nigerian applications showing users their transaction history can display meaningful descriptions rather than cryptic instruction data. The DAS (Digital Asset Standard) API provides standardized access to Solana NFT and compressed NFT data. Solana's compressed NFTs (cNFTs) are a technical innovation that reduces NFT minting and storage costs by orders of magnitude, enabling mass-scale NFT use cases. DAS API provides uniform access to both regular NFTs and compressed NFTs through a consistent interface, abstracting the underlying complexity. Nigerian NFT projects building on Solana benefit from this standardized data access for portfolio displays, marketplace listings, and NFT verification features. Webhooks via Helius allow real-time monitoring of Solana addresses and program interactions. When a specified wallet receives tokens, an NFT transfer occurs, or a smart contract event matches defined criteria, Helius delivers a webhook event to the application. This eliminates the need for Nigerian applications to poll the blockchain continuously, reducing both latency and API usage costs. The Priority Fee API provides real-time recommendations for Solana transaction priority fees — the additional micro-lamport payments that help transactions land faster during network congestion. For Nigerian applications where transaction confirmation speed matters to user experience, this API ensures fees are set appropriately without overpaying during normal conditions. Archive node access through Helius allows querying historical Solana state and transaction data at any past slot number — important for analytics applications, historical price data, and audit tools that need to reference the blockchain's past state. Standard Solana RPC nodes only retain recent state; archive queries require specialized infrastructure. The free tier (1 million credits per month) covers development and low-to-medium traffic production. Credits are consumed at different rates by different API endpoints — basic RPC calls consume fewer credits than enhanced parsing calls. Paid plans from $49/month scale to the throughput needs of larger applications. For Nigerian developers entering the Solana ecosystem, Helius is the recommended starting point — superior to Ankr or QuickNode for Solana-specific development due to the purpose-built enhanced APIs, active development by a Solana-native team, and deep integration with the Solana developer community.