Add girin.app validator (Girin Labs)

[Girin-Dev]

Summary

This PR adds the girin.app validator, operated by Girin Labs, to the XRPLF UNL.

• Validator public key: nHBQWjEK6DKgvK19RQiUxsCn442hwUEKfUTSW4oofRh5MFvzvavG
• Domain: girin.app
• Operator: Girin Labs
• Operation start: 2026-03-27
• rippled version: 3.1.2

Domain verification

xrp-ledger.toml is hosted and includes the validator attestation:

• https://girin.app/.well-known/xrp-ledger.toml

[[VALIDATORS]]
public_key = "nHBQWjEK6DKgvK19RQiUxsCn442hwUEKfUTSW4oofRh5MFvzvavG"
attestation = "FC506F38B0570AFB8CCD5E9B6490DB6746D4389E3A978884D43C22B8B452CD41F4BF724EEFB5CFDDAE2B2CAF406413A3FDFA5B8BD3C5439538CB4946A6C07402"
network = "main"
owner_country = "SG"
server_country = "DE"
unl = "https://vl.ripple.com"

Validator operations

• Server: AMD EPYC 12 vCPU / 32 GB RAM / 1 TB NVMe SSD (Netcup, Germany)
• Architecture: 2-tier — validator runs with peer_private = 1 and connects only to a dedicated stock proxy node via [ips_fixed]. Validator IP is not exposed to the public network.
• Security (validator): SSH key authentication, password login disabled, root login restricted to key-only (prohibit-password), ufw firewall with peer port 51235 restricted to the proxy IP only, fail2ban, NTP-synced clock, unattended-upgrades for automatic security patches.
• Security (proxy): ufw firewall (22, 51235), fail2ban, NTP-synced clock, unattended-upgrades. SSH key authentication will be enforced as the next hardening step.
• Monitoring: Continuous monitoring of server_state, peer count, and amendment voting.
• Update policy: Target rippled updates within 48 hours of new releases.

Diversity contribution

• Geographic: Seoul, South Korea — adds Asia-Pacific representation to a UNL currently concentrated in US/EU operators.
• Jurisdictional: Korea/Singapore legal coverage.
• Vertical: First UNL operator focused on mobile-native XRPL developer tooling and Social Login wallet infrastructure.

Ecosystem contributions

Girin Labs is a builder, not solely an infrastructure operator. Open-source contributions to the XRPL ecosystem include:

• XRPLSwift — iOS/Swift native XRPL library
• xrpl4j / xrpl4j-android — Java/Kotlin XRPL library
• WalletKit / CryptoCore — BIP39/BIP32/BIP44 (Swift) HD wallet primitives
• WalletConnect integration — XRPL examples and library
• Girin Wallet — Non-custodial XRPL wallet with Social Login (Google/Kakao), iOS/Android/Chrome Extension
• Doppler Finance — Lending & Liquid Staking protocol on XRPL
• Backed by the XRP Ledger Japan & Korea Ecosystem Fund
  GitHub: https://github.com/girin-app

Post-inclusion commitments

• Public RPC endpoint for Asia-based XRPL developers
• Ongoing maintenance of XRPLSwift and xrpl4j across rippled version releases
• Public documentation of amendment voting rationale
• Korean developer community programs through XRPL Korea (education sessions, workshops, onboarding content)

Contact

• Operator: Girin Labs
• Validator domain: girin.app
• GitHub: https://github.com/girin-app
  Happy to provide any additional information the UNL committee may need.