Irium (IRM) mining — PoW parameters and early network observations

[irium]

This thread is for technical discussion of Irium (IRM) mining and early network behavior.

Irium is a mine-only Proof-of-Work chain. There was no premine, presale, or airdrop.

────────────────────────────────
Mining Overview
────────────────────────────────

• Proof-of-Work consensus
• Mine-only distribution
• Multicore CPU mining supported
• Public mining software
• Official SOLO Stratum pool now available (see below)

────────────────────────────────
Official Stratum Pool (SOLO)
────────────────────────────────

Stratum URL:
stratum+tcp://pool.iriumlabs.org:3333

Username:
IRM_ADDRESS.worker1

Password:
x

Payout Model:
SOLO — block reward is paid directly to the IRM address used as username.

Notes:
• Native Rust Stratum implementation
• Direct integration with iriumd
• Template refresh every 3 seconds
• Pool fee: 0% (initial phase)

────────────────────────────────
Mining Notes
────────────────────────────────

• The miner utilizes multiple CPU cores by default
• Actual performance depends on core count, CPU architecture, and OS scheduling
• Early hashrate variance is expected on a small network

────────────────────────────────
Current Network Notes
────────────────────────────────

• Early-stage network with a small number of public nodes
• DNS-free peer discovery
• Initial connectivity depends on reachable peers being online at startup

Troubleshooting notes for “no peers”, mobile/Termux setups, and miner behavior at height 0 have been added to the repository documentation.

────────────────────────────────
Discussion Topics
────────────────────────────────

• Multicore mining performance on different CPUs
• Difficulty adjustment behavior at low hashrate
• Solo mining observations
• Peer connectivity from miner-operated nodes

This thread is intended for technical feedback and observations, not promotion or price discussion.

[minerja]

followed steps on github, get to this, and get this response

./target/release/iriumd

Failed to load anchors: anchor signature verification failed: valid anchor signatures below threshold: 0/1

Any ideas?

[irium]

That error means the node could not verify the signed bootstrap anchors file.

Irium verifies bootstrap/anchors.json using ssh-keygen’s signature verification (-Y) and the allowlist in bootstrap/trust/allowed_anchor_signers. If your OpenSSH is too old (no “ssh-keygen -Y”), or those files are missing/modified, verification returns 0/1 and the node exits.

Quick check (please paste output):

ssh-keygen -Y verify

If you see “unknown option” / usage output, your OpenSSH is too old. Fix by updating the OpenSSH client:

Ubuntu/Debian:
  sudo apt update
  sudo apt install -y openssh-client
  ssh-keygen -V

Fedora:
  sudo dnf install -y openssh-clients
  ssh-keygen -V

Windows:
  Use WSL (recommended) or update the “OpenSSH Client” optional feature.

Also make sure the repo files are clean (no local changes):
  cd ~/irium
  git reset --hard
  git clean -fdx
  git pull origin main

Then rebuild + run again:
  source "$HOME/.cargo/env" 2>/dev/null || true
  cargo build --release
  ./target/release/iriumd

If it still fails, please confirm these two files exist and are unmodified:
  bootstrap/anchors.json
  bootstrap/trust/allowed_anchor_signers

[irium]

At the moment, Irium is run via CLI for node operation and mining.

That said, we’re actively working on an Irium Core GUI that brings everything together in one place — a full node, desktop wallet, and built-in mining controls. The idea is to make it easier for miners to get started without changing how the network works under the hood.

CLI will remain fully supported for those who prefer it or are running servers. The GUI will simply be an alternative once it’s stable and ready.

More details will be shared when there’s something concrete to test.

[irium]

POOL UPDATE — Official Stratum Live

The Irium native Rust Stratum pool is now publicly accessible.

Algorithm: SHA-256d
Stratum: stratum+tcp://pool.iriumlabs.org:3333
Mode: SOLO (reward paid directly to miner address)

ASIC miners (Antminer / Whatsminer) are welcome to test.
If you connect successfully, please share:
- Miner model
- Firmware version
- Log snippet

Pool fee is currently 0% during the initial phase.

[irium]

We’re in the final stretch before next retarget (14843). Low competition. If you mine now, you directly help stabilize the chain.

[irium]

Current network snapshot:
Height 15,021
450 MH/s
Difficulty 174 (stable)
9 active miners

Early phase SHA-256d network.
Public stratum pool live.
CPU + ASIC compatible.

For miners who prefer entering before difficulty spikes — this is that stage.

[irium]

Thanks to those who reported the temporary height mismatch on the EU pool.

The issue has been identified and corrected. The Stratum backend is now properly aligned with the node RPC, and template height is verified against the live chain tip (node ≈ 15082, template ≈ 15083 as expected).

We’ve also added additional backend safeguards so that if template updates fail for any reason, the pool will automatically refresh instead of serving stale work.

The pool is currently operating normally and issuing live jobs.

If you previously saw an incorrect height, please restart your miner and reconnect. If anything unusual persists, share your pool URL and timestamp so we can cross-check logs.

Appreciate the reports.

[irium]

Public Stratum pool is now stable.
GPU mining confirmed working on mainnet.

URL: stratum+tcp://pool.iriumlabs.org:3333
Algo: sha256d
User: WALLET.worker
Pass: x

Full technical update posted in ANN thread.

[irium]

Pool update — May 2026

The official Irium Stratum pool is now live and actively mining. Full details below.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

IRIUM OFFICIAL STRATUM POOL — NOW LIVE
pool.iriumlabs.org | Built on irium-stratum | Open Source | Direct Payout

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Connection details

Port	Hardware	Notes
3333	ASIC	Primary — recommended for all ASIC miners
3335	CPU / GPU	Legacy-compatible profile
443	All hardware	Fallback for networks that block port 3333 (China, corporate, etc.)

Pool address: pool.iriumlabs.org
Worker username: Your IRM wallet address (starts with Q)
Password: x
Difficulty hint (optional): Set password to d=20000 to help vardiff start faster

Example:

Code:

URL:      stratum+tcp://pool.iriumlabs.org:3333
Worker:   QYourIRMAddressHere.rig1
Password: x

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

How rewards work

This pool uses direct per-session payout. There is no pool wallet and no middleman.

• Your worker username IS your IRM address
• When your miner finds a block, the 50 IRM coinbase reward is paid directly to your address at the consensus layer — no withdrawal needed
• No pool fee, no minimum payout, no registration
• Coinbase rewards require 100 block confirmations before they can be spent — approximately 8 to 16 hours at the current block rate
• Your balance will show the IRM immediately after the block is confirmed, but it cannot be sent until maturity is reached

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Important — miner software compatibility

Irium uses little-endian byte order for block header fields. Mining software built for Bitcoin's byte order will have shares accepted by the pool but will NOT earn block rewards, because the blocks it finds are invalid at the Irium consensus level.

Confirmed working:

• irium-miner.exe — official Windows miner, download from https://github.com/iriumlabs/irium/releases/latest
• irium-miner-gpu.exe — official GPU miner (same download)

Known compatibility issue:
NerdQAxe+, Bitaxe, and other ESP32-based devices running stock cpuminer-opt firmware use Bitcoin byte order and will not earn block rewards on Irium. We are working on a custom firmware build for these devices. We will announce when it is ready to flash.

If you are unsure whether your miner is compatible, ask in this thread and we will check.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Pool stats — May 2026

• Blocks found since hard fork activation (block 22,888): 96+
• Block reward: 50 IRM per block
• Network difficulty: approximately 1.5M+
• Target block time: 10 minutes
• Active miners: growing

Live stats: https://api.iriumlabs.org/api/pool/

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Run your own pool

Irium is a decentralized project. The pool software is fully open source and anyone can run their own Irium pool. If you are in a region with poor connectivity to our server, running a local pool is the best solution for low latency and full control.

Pool source code: https://github.com/iriumlabs/irium

We encourage the community to run independent pools. Decentralized mining infrastructure makes Irium stronger.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Note on port 443

Port 443 exists specifically for miners in regions where port 3333 is blocked by ISPs or firewalls. Irium Labs operates this as a community service but is not responsible for ISP-level port restrictions in your region. If you need better connectivity, running your own local pool is the recommended long-term solution.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

This pool is operated by Irium Labs as a voluntary community service. Irium Labs is not responsible for ISP restrictions, hardware compatibility with third-party firmware, or third-party mining software behavior. All pool and node software is fully open source.

— Irium
Irium Blockchain Workspace