Chainalysis
Blockchain analytics company selling investigation, compliance and monitoring tools to agencies and businesses.
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Chainalysis key facts
| Category | Security and compliance |
|---|---|
| Platforms | Web, API |
| Launched | 2014 |
| Company | Chainalysis, co-founded by CEO Jonathan Levin |
| Pricing | Not published; demo request required |
| Free plan | Free onchain sanctions oracle, no customer account needed |
| Chains | Reactor traces across 27+ blockchains |
| US availability | Available: terms name no country restrictions |
What is Chainalysis?
Chainalysis is a blockchain data company co-founded in 2014 by CEO Jonathan Levin. Its products include Reactor for tracing funds, KYT for real-time transaction monitoring, address screening, and Hexagate for exploit prevention. Customers include law enforcement, tax agencies, exchanges and financial institutions.
How Chainalysis works
Chainalysis groups addresses into real-world entities using hundreds of clustering heuristics, then sells access to that data through several products.
Reactor is the investigation graph: it links 134K+ counterparties and services and traces funds across 27+ blockchains, 40M+ assets, 300+ bridges and DEXs, and popular mixers, turning swaps and bridge hops into readable steps. Investigators can annotate graphs and share findings for briefings or court.
KYT is for exchanges and other platforms. It monitors transactions through an API, raises alerts on exposure to high-risk categories, and lets teams manage alerts in bulk. An alert can be opened in Reactor for deeper work. Address Screening checks a wallet or liquidity pool before you deal with it and alerts you when its risk score changes.
How to start with Chainalysis
- The commercial products are sold to organizations.
- You request a demo on chainalysis.com, and Chainalysis serves government agencies, exchanges, financial institutions and cybersecurity firms in over 70 countries.
- There is no self-serve sign-up for Reactor or KYT.
- KYT connects through an API, and Reactor can pull KYT alerts with their risk scores so a compliance team can escalate an alert into a deeper investigation.
- Developers who only need a sanctions check can use the free Chainalysis oracle without a customer relationship.
- It is a smart contract with an isSanctioned(address) function that returns true or false.
- It is deployed at 0x40C57923924B5c5c5455c48D93317139ADDaC8fb on Ethereum, Polygon, BNB Smart Chain, Avalanche, Optimism, Arbitrum, Fantom, Celo and Blast, with a separate address on Base.
Chainalysis fees and limits
Chainalysis does not publish prices for Reactor, KYT, Address Screening or its other products; pricing comes through a demo request. The KYT page only claims competitive pricing. The sanctions oracle is free to call, and a read from another contract costs only the gas of the transaction that makes it.
Risks to know before using Chainalysis
- Chainalysis states that it cannot guarantee the accuracy, timeliness or validity of the oracle's sanctions data, so a false result is possible between a new designation and the next update.
- The oracle covers sanctions lists from bodies such as the US, EU and UN, not scams or hacks.
- For the paid tools, risk scores depend on customizable settings and proprietary clustering, so two platforms using Chainalysis can treat the same wallet differently.
Chainalysis alternatives
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Prague audit firm for Solana and EVM smart contracts, maker of the Wake and Trident testing tools.
Chainalysis pros and cons
- Covers investigations, compliance and fraud in one platform
- Used by public agencies as well as exchanges
- Publishes yearly research such as the Crypto Crime Report
- No public pricing; sales contact required
- Built for institutions, not individual users
- Wallet risk labels are proprietary and not independently auditable
Chainalysis FAQ
What is Chainalysis?
Chainalysis is a blockchain data company co-founded in 2014 by CEO Jonathan Levin. Its products include Reactor for tracing funds, KYT for real-time transaction monitoring, address screening, and Hexagate for exploit prevention. Customers include law enforcement, tax agencies, exchanges and financial institutions.
How much does Chainalysis cost?
Not published; demo request required, according to Chainalysis’s own page (checked Sep 26, 2026). Free plan: Free onchain sanctions oracle, no customer account needed.
Is Chainalysis available in the US?
Available: terms name no country restrictions, according to Chainalysis’s own page (checked Sep 26, 2026).
Sources
How this page works
Sources: Chainalysis: official site, Chainalysis: Company page, Chainalysis: KYT. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.