NANSEN

Alex Svanevik, a Norwegian data scientist, was watching on-chain data during the 2020 DeFi summer and kept asking the same question: who is actually moving this money? Blockchain data is public — every transaction, every address, every token flow is on the ledger.

But millions of wallet addresses with no labels attached is just noise. Svanevik started tagging wallets manually, labeling which addresses belonged to exchanges, which to known whales, which to smart money traders who consistently got in early.

What started as personal research became Nansen. They built tools to collect, label, and analyze on-chain data at scale — eventually tagging over 100 million wallet addresses.

When you could see that a wallet tagged 'Smart Money Tier 1' was quietly accumulating a token, that information was worth paying for. Nansen launched as a subscription product and found immediate product-market fit with professional crypto traders and DeFi researchers.

Nansen runs on subscriptions. Individual analysts and traders pay $150-$1,000 per month depending on the data depth they need.

Protocols, funds, and exchanges pay enterprise rates for API access, custom analytics, and team plans. The core value is wallet labeling — their proprietary database of tagged addresses that turns raw blockchain data into actionable intelligence.

The data advantage compounds over time: the more addresses they label, the more useful the product becomes, the more users subscribe, the more signals they collect.

The Nansen Dashboard is the main product — a research platform showing wallet labeling, token flows, exchange netflows, and smart money tracking across major blockchains. Token God Mode gives deep analytics on any specific token: holder distribution, whale activity, concentration risk.

Portfolio analytics let users track labeled wallets and get alerts when smart money moves. The NFT Paradise tools cover NFT floor prices, collection analytics, and whale activity tracking.

Nansen Query provides raw SQL-style access to their labeled on-chain data for technical users.

Nansen grew through the quality of its data and the power of crypto Twitter. During DeFi summer 2020, analysts sharing Nansen charts of whale movements and smart money flows became standard in crypto research threads.

The platform's visuals — wallet activity heatmaps, token flow diagrams, exchange netflow charts — were both useful and shareable. Every screenshot that got posted on Twitter was free marketing.

The NFT boom of 2021 created a second wave. Nansen built specific NFT analytics tools — floor price tracking, rarity analysis, whale activity on specific collections — that became essential during a period when NFT prices moved fast and information asymmetry was massive.

Traders who knew which wallets were accumulating a collection before the price moved had a real edge.

The crypto bear market of 2022-2023 hit Nansen hard. Crypto prices fell 70-90%, trading volumes collapsed, and customers who had subscribed during the bull market either churned or downgraded.

In November 2023, Nansen laid off approximately 30% of its workforce — a painful reset after a period of aggressive hiring. The fundamental challenge for Nansen is that crypto analytics is cyclical: subscription demand spikes in bull markets when everyone wants an edge, and contracts sharply in bear markets when most people leave the space.

Building a durable SaaS business on a cyclical underlying market is the core problem the company hasn't fully solved.

Accel led the Series B in 2022 at a $750 million valuation — a big bet on crypto data becoming a permanent professional research category rather than a bull market novelty. a16z participated in earlier rounds.

The investor base reflects conviction that blockchain data analytics will eventually look like Bloomberg for traditional finance — a premium, subscription-based data layer that professional participants cannot do without. Whether the business can sustain that thesis through crypto cycles is the open question.