Joulecoin (XJO) SHA256/SHA256d Mining Pool Setup — Template Validation & Payment Safety
Joulecoin miners connect over SHA256/SHA256d; the part you can’t improvise is template correctness and payout script safety. This page focuses on validating the template→submit→credit loop before you invite real miners.
XJO correctness first: template and submission integrity
Pool operators lose money when templates are wrong or when accounting can’t reconcile. For XJO, validate the full chain: template creation, share submission, block detection, confirmation tracking, and payout signing.
- Template integrity: Confirm the daemon returns consistent templates and that your pool core parses every required field.
- Submission observability: Log submission results so rejects can be traced to a specific template/job.
- Script safety: Ensure the payout engine only builds transactions using address/script types the daemon accepts.
- Rollback readiness: Plan for orphans and reorgs and verify the ledger can reverse credits cleanly.
XJO stack choice based on how you validate templates
XJO can be deployed on established stacks; pick the one that makes validation and upgrades easiest for your team.
- Yiimp-based: Often fastest for a public UI; combine it with a strong template validation workflow. See .
- Miningcore: Often strongest for service separation and clean logging. See .
- Validation tooling: We can add a small tool that repeatedly exercises XJO template calls and flags unexpected changes before miners notice.
Correctness beats speed: one extra hour of template validation saves days of miner support and payout disputes.
XJO implementation details (templates, Stratum, payouts, UI)
- XJO daemon + RPC hardening: Install the node, isolate RPC, and capture the RPC help output for reproducible deployments.
- Template parser verification: Test `getblocktemplate` (or equivalent) parsing and keep logs for template diffs across upgrades.
- Stratum behavior: Expose ports, tune timeouts, and define varDiff (variable difficulty) so share rate stays stable.
- Payout scripting: Implement batching, retries, and confirmation gates; see and .
- UI + block evidence: Show block states and payout batch IDs so miners can verify progress without opening tickets.
- Security + backups: Lock down hosts, rotate secrets, and test restores; see .
If you also run BTC or other SHA256 coins, keep XJO payout signing and databases isolated; template or wallet issues should not ripple across the fleet.
XJO miner URL example and worker formatting
Your XJO miner guide should include a single tested username example and one section explaining what “rejected” means (wrong credentials vs stale work).
stratum+tcp://POOL-DOMAIN:3333
stratum+ssl://POOL-DOMAIN:3443When diagnosing rejects, correlate miner logs with Stratum job IDs and daemon submission responses.
XJO-specific checks: script types, coinbase tags, and rollbacks
- XJO script type acceptance: Verify which address formats and script types your XJO daemon can spend to, then enforce that constraint in the payout engine.
- Coinbase tags and identification: Ensure your coinbase tag/identifier is stable so blocks can be attributed and audited consistently.
- Rollback drills: Simulate an orphaned block in staging and confirm credit reversal and UI state updates are automatic.
XJO launch checklist for correctness under pressure
- Record the XJO daemon version and RPC help output, then pin it for repeatable builds.
- Run template calls continuously in staging and alert on unexpected field changes or failures.
- Connect a small miner set and confirm share acceptance and difficulty adjustments behave as documented.
- Force a restart of Stratum and backend services and verify miners reconnect without mass rejects.
- Execute a small payout batch and reconcile the payout export against the on-chain transaction.
- Verify orphan/reorg handling by simulating a rollback scenario and checking balances/UI states.
- Back up DB + wallet material and perform a restore drill to prove you can recover quickly.
XJO pool FAQs
What’s the quickest way to validate XJO templates before launch?
Use staging: request templates repeatedly, submit controlled work, and confirm the daemon accepts it. Keep logs so you can compare behavior across upgrades.
Do you customize payout scripts for XJO address types?
Yes. We verify what the daemon accepts and make the payout engine enforce that, so sends don’t fail mid-batch.
Can you run XJO without a public website UI?
Yes. We can deploy an operator-only pool with an API and internal dashboard, then add public pages later if desired.
How do you troubleshoot rejected shares on XJO?
We correlate miner logs with Stratum job IDs and daemon submit responses. Rejections usually come from stale work, bad credentials, or template issues.
Will XJO work with external hashpower marketplaces?
Often, but marketplace miners can reconnect aggressively and change hashrate quickly. We tune timeouts and varDiff targets and then test with real clients.
Planning a XJO pool and want a sanity check before launch? Contact us and share your template validation status plus how you want payouts batched.