Engineering, forensics, and infrastructure notes from the 1F team.
The blockchain infra market split into two camps that don't talk to each other. We built the bridge.
When a bridge gets hacked, the first hour matters most. Here's the exact 1F query sequence that surfaces stolen-funds destinations across chains, identifies the laundering path, and produces a court-ready evidence bundle — using Drift Protocol's $285M loss as the worked example.
After OFAC's $344M Tether seizure and the EU's 20th Russia sanctions package, real-time on-chain sanctions screening stopped being optional. Here's the exact API surface a compliance team needs and how 1F implements every requirement in one endpoint.
Operation Atlantic and the Southeast Asian scam-compound enforcement actions both relied on first-hop cluster mapping. Here's how to do that work yourself with 1F's scam-network BFS, cross-tenant community feed, and FinCEN SAR adapter — with worked examples on real flagged addresses.
Comparing the three blockchain API providers: pricing, RPS, indexed Data APIs, mempool, real-time stream, multichain support, and the on-chain compliance layer Alchemy and QuickNode don't sell.
Alchemy's getAssetTransfers is the most-called Data API endpoint on the market. 1F's drop-in replacement adds cross-chain joins, sub-millisecond latency, and 60% lower price per million calls.
Step-by-step: subscribe to mempool transactions across 13 EVM chains plus Bitcoin via WebSocket, filter by token or protocol, and fire alerts before transactions confirm. Drop-in code samples.