Onchain data for audit, tax, and financial reconciliation
Crypto and digital asset clients transact across dozens of chains. Regulators expect evidence that traces back to source. Tax and audit teams close that gap with Dune.
How tax & audit firms use Dune
Data coverage at a glance
Crypto company audit
With Dune, audit teams can verify crypto company financial statements and deliver attestation reports backed by evidence that traces back to the chain.
Dune provides normalized transfers, decoded contract events, and labeled counterparties across 60+ chains, every row tied to its source transaction, so you can test completeness, reconstruct client holdings for any audit period, and defend your data sourcing as an independent source clients and regulators can trust.
What's in the data
- Token transfers: normalized, priced, source-traceable across EVM, Solana, Tron, Stellar, Ripple, and more
- Decoded logs: contract-level events for swaps, staking, lending, and more
- Labels: exchanges, custodians, institutions, with provenance and confidence scores
- Balance history: point-in-time holdings by token, in USD, across 21 EVM chains
- Staking: validator rewards and withdrawals with timestamps
Binance 2025 Balance Sheet
Crypto tax reporting
With Dune, tax teams can reconstruct every taxable event in a client's wallet history across chains without rebuilding the pipeline for each one.
Dune provides complete transfer histories and decoded DeFi events for any wallet, normalized across chains and priced in USD at the time of the transaction, so you can classify disposals, swaps, and pool entries and exits, and feed the output straight into your tax engine.
What's in the data
- Token transfers: complete wallet histories, normalized, priced
- Decoded logs: swaps, pool entries and exits, lending events
- Prices: USD value at transfer time, minute granularity
- Labels: exchanges, bridges, protocols for counterparty context
- Chain coverage: one schema across EVM, Solana, Tron, Stellar, Ripple, and more
Daily Activity of a Single Ethereum Wallet
Ways to access the data
Query via SQL, deliver via API, or pipe directly into your data warehouse, no custom infrastructure required.
Data Hub
SQL, dashboards, and publishing in one place. Query onchain data, automate with schedules, and share with your team.
Datashare
Pipe Dune into Snowflake, BigQuery, or Databricks with Datashare. Choose region and cadence, then join onchain data with the rest of your stack.
Agents
Query any onchain dataset in natural language from your AI agent via MCP. CLI for scripts and CI/CD; MPP for per-query agent payments.
SDKs & REST APIs
Use official SDKs or HTTP endpoints to execute queries, manage schedules, and pull fresh results into notebooks, services, or internal tools.
Questions & answers
Ready for audit-ready onchain evidence?
Give tax and audit teams source-traceable data across chains — without rebuilding a pipeline for every engagement.