otterscan/otterscan
A blazingly fast, local, Ethereum block explorer built on top of Erigon observed · 2026-08-28
Health v2 · maintenance only
64/100
- Activity 65
- Release rhythm 43
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: 77
- age_days: 1889
- days_rel: 300
- days_push: 212
- n_releases_24m: 6
Adoption not part of the score
1420 stars · 213 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
Otterscan is an open-source, fast, local Ethereum block explorer built as a React app designed to run alongside an Erigon archive node. It queries your own node for privacy and speed, using custom JSON-RPC methods to reduce network overhead.
Use cases
- explore ethereum blocks and transactions locally
- private block explorer that doesn't leak my IP to third parties
- run a laptop-friendly ethereum explorer with erigon
- look up transaction details on optimism superchain
- self-hosted alternative to etherscan
- decode contract method selectors and verify source code
- inspect blockchain state without running extra indexers
When to choose
- you already run or plan to run an Erigon archive node
- privacy matters and you don't want to send queries to third-party explorers
- you want a lightweight, open-source Etherscan alternative
- you need fast local block exploration on modest hardware
When to avoid
- you don't want to run your own archive node
- you need token analytics or exchange-style features of commercial explorers
- you use a node client other than Erigon without custom RPC support
Facets
application · maturity active
search-engine developer-tools http-client blockchain developer-tools self-hosted self-hosted cross-platform ethereum block-explorer erigon privacy local-first react cryptocurrency web-server docker
1 source
- readme: https://github.com/otterscan/otterscan · fetched 2026-08-28 · 834e59b9804f
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| otterscan/otterscan | main | 64 |
For agents
markdown · JSON · MCP: product_card(name="otterscan/otterscan")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem