Blockchain APIs: A Complete Guide (2026)
A practical guide to blockchain data APIs: what they are, how they work, and how to query transaction history, token balances, and ownership across many chains reliably at scale.
A practical guide to blockchain data APIs: what they are, how they work, and how to query transaction history, token balances, and ownership across many chains reliably at scale.
Andrew Duca on handling crypto taxes for Solana LPs, Bitcoin Runes, and the long tail of onchain activity Crypto tax software faces a structural coverage challenge. Products built between 2017 and 2021 optimized for a specific market structure: centralized exchange trading, simple token swaps, and established protocols with stable transaction
A joint perspective from Uniswap Labs and Allium on the infrastructure enabling institutional DeFi adoption The institutional conversation around trading onchain has shifted from "if" to "how" over the past 18-24 months. What was once viewed as experimental infrastructure for retail traders now represents a
Hacken released their 2025 Yearly Security Report this week, analyzing over $4 billion in Web3 losses across the year. Allium's cross-chain analysis contributed to understanding how DPRK threat actors laundered stolen funds.
Originally published by the Federal Reserve Board (FEDS Notes) on December 17, 2025, by Chuan Du, Ria Sonawane, and Cy Watsky. This Federal Reserve analysis uses granular blockchain data to trace how Silicon Valley Bank's March 2023 failure triggered a run on USDC and spread contagion through DeFi.
How Kofi Kufuor built Bundlebear into the go-to ERC-4337 dashboard, then brought the same data infrastructure to Base's analytics team.
Onchain analyst Kofi Kufuor (@0xKofi) on building production-grade analytics at Base and Bundlebear Base is one of the fastest-growing L2s in crypto. Incubated by Coinbase, it serves as the onchain rails for products used by millions—from Base Chain itself to the new Base app. Behind those products
The Orderflow Explorer, built by Allium through a Uniswap Foundation grant, maps the complete path of every DEX swap across Ethereum, Arbitrum, Base, and Unichain. This post covers what the Orderflow Explorer does, how we built the underlying schema, and how we validated it.
Contributors: Soon Guan Tan (Data Analyst, Allium), Soo Hyung Choe (Data Analyst, Allium), Jackie Zhang (Head of Data Science, Uniswap Foundation) Summary When a user swaps on Ethereum, the transaction often passes through multiple intermediaries (wallets, meta-aggregators, solvers, aggregators) before reaching liquidity pools. Each layer serves a purpose, but
How Allium built infrastructure for real-time visibility into activities of stablecoins, showcased at the Singapore FinTech Festival 2025 The Market Intelligence Challenge As stablecoins have grown to over US$300 billion in market cap, public sector entities working to understand digital asset markets face a fundamental challenge: how do
An updated 2026 guide to Solana RPC providers, gRPC data streaming, validator DevOps tooling, and data infrastructure, with practical comparisons of reliability, uptime, and pricing.
A 2026 comparison of the leading blockchain intelligence platforms for risk, compliance, law enforcement, and public sector teams, scored on chain coverage, deployment security, evidentiary standards, and data flexibility.