About 1F

1F is the unified blockchain API for builders and compliance teams. One API key gives you drop-in JSON-RPC across 14 EVM chains plus Solana and Bitcoin, indexed Data APIs for transfers/balances/holders, a real-time mempool stream over WebSocket, and the on-chain compliance layer (KYC screen, OFAC sanctions, multi-hop exposure, FinCEN SAR adapter, court-ready HMAC-signed evidence reports).

What we do

Drop-in infra

Alchemy/QuickNode-compatible POST /v2/{key}/{chain} with sub-1ms cache hits.

Real-time stream

Mempool + confirmed events across 13 EVM chains; filter by chain, address, token, protocol, origin chain.

Cross-chain joins

22+ bridges paired by deterministic message-id (LayerZero, Wormhole, CCTP, Stargate, Hop, Across, Synapse).

Compliance & KYC

OFAC sanctions screening, mule-pattern detection, multi-hop exposure, FinCEN Form 111 adapter.

Forensics

Mixer correlation (Tornado, Railgun, Privacy Pools), scam-network BFS, court-ready HMAC reports.

Solana & Bitcoin

Tail ingest of Solana slots and Bitcoin tip blocks alongside the EVM graph.

Why we built it

The blockchain infrastructure market split into two camps that don't talk to each other. Alchemy and QuickNode sell commodity JSON-RPC. Chainalysis and TRM sell investigations at 10× the price. Customers who need both end up with two contracts, two integrations, and two bills. We built the unified surface so the same API key answers both questions.

Coverage

Trust & transparency

Contact