# How to sustain block explorers for L3s? | Jaack's Notes

Source: https://jaack.montaigne.io/how-to-sustain-block-explorers-for-l-3-s
Kiwi News: https://news.kiwistand.com/stories/How-to-sustain-block-explorers-for-L3s-or-Jaacks-Notes?index=0x66a2825790cd7f94332eb90dcfccf1bcfd5a34df3b9e0608f168c04335b52aeff7f8e718
Submitted by 0x45cC...BF22 on 2024-07-25 UTC, 3 upvotes, 0 comments

## Summary

Routescan is not yet indexing any L3, which it says is a consequence of the market rather than a choice it made. Responding to Syndicate's post on the economics of L3s, the author argues that block explorers are a major cost for L3s because they must retain full chain history and cannot simply rely on subgraphs. Using an assumed storage price of $5 per million transactions per month, the author estimates storage alone for a DeFi-style chain at about 3 TPS would total $73,200 over five years, while a gaming chain at 75 TPS would total $1,830,000. The author says they do not have solutions and presents the problem for discussion.