---
id: 1341
title: "Safer cold storage on Ethereum"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2025/09/05/safer-cold-storage-on-ethereum/"
published_at: "2025-09-05 11:00"
tags: ["web3", "smart-contracts", "blockchain", "blockchain-security", "ethereum", "cold-storage", "multisig", "custody", "key-management"]
phying_url: "https://phying.com/item/1341"
lang: en
---

# Safer cold storage on Ethereum

## Summary

Exchanges can use Ethereum smart contract programmability to build cold storage that stays secure even when multisig keys are compromised, via role-separated signing, timelocks, and rate limiting.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2025-09-05 11:00
- **Original:** https://blog.trailofbits.com/2025/09/05/safer-cold-storage-on-ethereum/
- **Phying News:** https://phying.com/item/1341