Hostname Reference

Updated: May 2, 2026 — public testnet relaunched on the new consensus rules (805c07d). Explorer host moved to LON, NYC3 took the active miner role, ATL demoted to seed-only.

Public Endpoints

Resolve any of the above with dig to see the host serving it.

Testnet Fleet (logical names)

Active on the new consensus chain (genesis 41f970df…):

Excluded from this redeploy (intentional):

Mining: NYC3 runs coincync-miner.service with 2 vCPUs, FULL_MEM RandomX. The service requires COINCYNC_RPC_API_KEY in its environment block to authenticate to the local node’s RPC; the value is sourced from the matching coincync-node.service drop-in.

Port Map

Binary Locations

All nodes: /usr/local/bin/coincync-node, /usr/local/bin/coincync-wallet, /usr/local/bin/coincync-tui-miner. Hosts running the headless miner also have /usr/local/bin/coincync-miner (NYC3 currently).

Avoid: the old binary path /root/coincync-new/target/release/... is deprecated. A /root/auto-sync.sh cron used to respawn nodes from that path every 30 min; the cron has been disabled fleet-wide as of the 2026-05-02 redeploy. Do not re-enable without first updating the script to use /usr/local/bin/.

systemd Services

All nodes use standardized systemd services. See Deploying a node.

• coincync-node.service — node daemon, auto-restart, RPC bearer key from drop-in
• coincync-miner.service — headless miner (NYC3 only by default), depends on coincync-node

nginx Proxy (by role)

• Explorer host (LON): / static explorer at /var/www/explorer/, /api/testnet and /api/mainnet proxied to local RPC, /health/<node> fleet health fan-out with shared bearer key
• API host (TOR): /rpc, /rpc/mainnet, /v1/* public API routes
• Landing host (NYC3): coincync.network, docs.coincync.network, mirrors.json
• Mirror explorer (RIC): Same /var/www/explorer/ layout as LON; available as a failover endpoint via the operator inventory.

Redeploy procedure

Operator-only — requires SSH access to fleet hosts. Specific host addresses live in the private operator inventory, not in this public doc.

# Sync canonical source to a fleet host (operator laptop has SSH key, fleet
# does not need GitHub creds)
git push ssh://root@<host>/opt/coincync main

# On each fleet host (with --rest-bind binding RPC to 0.0.0.0):
SKIP_PULL=1 DATA_DIR=/data/seed1 bash /opt/coincync/deploy/ops/redeploy-fleet.sh

# Frontend HTML deploy is SEPARATE — only needed on the explorer host:
bash /opt/coincync/deploy/explorer/deploy-explorer.sh   # on LON

Known gotcha: the redeploy script rebuilds Rust binaries via cargo build which assumes ~/.cargo/bin/cargo exists for the repo owner. Hosts that lack rustup (FRA, AMS at the time of the 2026-05-02 redeploy) cannot run the script — instead, SCP the built binary from a working fleet host using SSH aliases configured in ~/.ssh/config:

scp lon:/usr/local/bin/coincync-node fra:/usr/local/bin/coincync-node.new
ssh fra 'mv /usr/local/bin/coincync-node.new /usr/local/bin/coincync-node && \
         chmod +x /usr/local/bin/coincync-node && \
         mv /data/seed1/testnet /data/seed1/testnet.wiped.$(date -u +%Y%m%dT%H%M%SZ) && \
         systemctl restart coincync-node'