Academic research · non-commercial

Meridian — blockchain network measurement

If you reached this page from a connection or scan in your logs: it's a university research crawler measuring the public health of blockchain peer-to-peer networks. Here's what it does, and how to opt out.

What Meridian is

Meridian is a non-commercial PhD research project studying the security and infrastructure concentration of public blockchain P2P networks (Bitcoin, later Ethereum). It measures, over time, how node infrastructure is distributed across networks and providers, and what fraction of nodes run software versions with publicly known vulnerabilities (CVEs).

It contacts only publicly reachable nodes that participate in these open networks.

What it does — and doesn't

✓ It does

  • Make low-rate connections to public nodes
  • Complete the standard P2P handshake
  • Read publicly advertised metadata (software version, block height)
  • Perform light checks on a small, fixed set of ports

✗ It never

  • Attempts to log in, authenticate, or access private systems
  • Exploits vulnerabilities or disrupts any service
  • Collects personal data beyond public node network metadata
  • Sells or shares data commercially

Opt out

To exclude your host, IP, or network from all active scanning, email us the IP address or CIDR range. Requests are honoured promptly — the range is added to a permanent scanning denylist.

Opt out: abuse@munimen.io

Contact

Abuse / opt-out abuse@munimen.io

Researcher PhD candidate, network security & internet measurement

Ethics Conducted under institutional research-ethics review, following established internet-measurement best practice (minimal footprint, transparency, opt-out).