BLAKE2b, not SHA-256
Every block since 961,640 is hashed with BLAKE2b-256 under a 164-byte header. SHA-256 ASICs cannot mine it, so the chain is mined by new hardware, GPUs and CPUs rather than by whoever owns the largest SHA-256 farm.
Lazarus Pool · BitcoinThe same ledger.
A different proof of work.
Lazarus Pool mines Bitcoin. XBT and BTCB2 are the tickers. On 30 August 2026, at block 961,640, Bitcoin's history was carried onto a new proof of work: blake2b. The coins, the addresses and every block before that height are unchanged. What changed is who can mine, and how the rewards are paid. The pool is at pool.lazarus-xbt.xyz. This site is the chain, the wallets, and how mining works.
- Network hashrate
- 53.8 PH/s
- Block height
- 980,733
- Block time
- 8 minaverage time between blocks
- Lazarus share
- 22.9%132 DATUM gateways
- Pools mining
- 241,034 blocks in 7 days
The chain
Mining that a person can still do
BLAKE2b resets the hardware race and hands template building back to miners. Three things define this network.
One history, 21 million coins
Balances, addresses and rules are Bitcoin's, up to the fork height. The subsidy is 3.125 XBT a block, halving on Bitcoin's schedule, with the same 21 million limit and the same 2016-block retarget.
Miners build the blocks
Most of the hashrate here runs DATUM: each miner's own node chooses the transactions, and the pool only sets the payout split. Rewards are paid inside the coinbase of the block that earned them, not from a pool wallet.
Before you mine or receive XBT: this chain shares every block of history with SHA-256 Bitcoin up to 961,640, so an address holding real BTC must never be used here. Use a fresh wallet, kept only for XBT. Why this matters.
Ecosystem
Everything running on XBT
Open services, all free to use, all reading the same chain.
Lazarus Pool Mining
TIDES payouts in the coinbase, no accounts and no custody. Mined through your own DATUM gateway, with no pool fee.
pool.lazarus-xbt.xyz →Block explorer Chain
Blocks, transactions, addresses, fees and mining statistics for XBT, with a public API and a live mempool view.
mempool.lazarus-xbt.xyz →Galaxy map Network
Every pool as a solar system and every DATUM gateway as a planet, built from coinbase tags. Hover a world to see what it mines and how.
lazarus-xbt.xyz/map →Lightning Stream Whitepaper
Lightning Stream lets people and AI agents pay Lightning node runners for a service piece by piece as it arrives, over ordinary XBT Lightning channels: a few small payments are locked ahead, each request releases one, and the unused ones come back. For pieces too small to pay one by one, a fair lottery pays the exact price on average.
lazarus-xbt.xyz/stream →Lazarus Key Wallet
A hardware wallet for XBT: Block's Bitkey app, forked so the device you already own signs on this chain. Replay-protected, and able to read from nothing but your own node.
lazarus-xbt.xyz/key →Electrum server Wallets
A public Electrum endpoint that speaks this chain's 164-byte headers, so a wallet can hold and spend XBT without running a node.
How to connect →MCP server AI
Connect Claude, ChatGPT or any MCP-capable assistant to live pool and chain data, and ask it about your miners in plain language.
mcp.lazarus-xbt.xyz →Source Open
Node builds, the DATUM Prime pool server, the gateway, and the tools behind these sites. Read it, run it, fork it.
github.com/AwokenLazarus →Mining
How this chain is mined
Almost all of the hashrate here runs DATUM: the miner's own node builds the block and the pool only splits the coinbase. Pools publish their own setup guides — this page points you at them.
Lazarus Pool No fee on DATUM
TIDES payouts in the coinbase, no accounts and no custody. Endpoints, setup instructions, live stats and your own miner page are all on the pool site.
pool.lazarus-xbt.xyz →Other pools Directory
Every pool that found a block this week, read from the chain's own coinbase tags, with what each one's blocks say about how it mines.
See the directory →Public stratum is a donation, validation and fallback endpoint. stratum+tcp://stratum.lazarus-xbt.xyz:23334 (and port 3333) takes a donation of hash at 100%, kept by the pool, confirms a miner connects while your own node and DATUM gateway come online, and is the fallback if your own gateway goes down. An address that starts there pays a grace at 25% for 24 hours, or 96 hours if it had DATUM work on Lazarus in the prior 30 days, then 100%. The clock does not pause. A pool that proxies its stratum hashers through its own DATUM gateway pays 100% with no grace. Your own DATUM gateway is 0%; the DATUM bonus ended on 24 October 2026. Solo stratum is closed. During the 45-day coinbase maturity window, stratum-hashing rewards on any pool are invalidated. The pool site has the DATUM gateway setup.
Where the chain is
Timeline
-
30 Aug 2026 · block 961,640
The fork
Proof of work changes to BLAKE2b with a 164-byte header. Everything before this block is shared with SHA-256 Bitcoin.
-
Since the fork
DATUM becomes the default
Most pools hand template building to miners, and payouts move into the coinbase. The galaxy map shows who does which.
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22 Sep 2026 · block 973,440
Long coinbase maturity
Bitcoin Knots 29.4.2 holds newly mined coins for 6,480 blocks instead of 100, until block 979,920. It makes hit-and-run mining unprofitable. What it means for payouts.
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Block 979,919 · about 1 Nov 2026
180-day rolling maturity
Bitcoin Knots 29.4.3 holds coins mined from block 979,919 for 25,920 blocks (about 180 days), each counted from its own block, until the RDTS expiry in September 2027. Coins mined during the first window still unlock 6,480 blocks after their own block. What it means for payouts.
Running a node?
Gateway operators build blocks from their own node, so the node's rules are the ones that count. Run Bitcoin Knots 29.4.2 or later: an older node will accept blocks the network rejects, and everything it mines on top of them is wasted.
Difficulty
6.33 G+2.9% in 1,059 blocks
Retargets every 2016 blocks, as on Bitcoin.
Pool directory
Who is mining XBT
Read from the chain itself: every pool that found a block in the last seven days, with what its coinbase tags say about how it mines. Not an endorsement of any of them.
| Pool | Type | Share (7d) | Blocks (7d) | Est. hashrate | Gateways |
|---|---|---|---|---|---|
| Lazarus | DATUM | 29.4% | 304 | 13.7 PH/s | 213 |
| AlphaPool | DATUM | 19.3% | 199 | 8.95 PH/s | 88 |
| B2Pool | DATUM | 12.2% | 126 | 5.67 PH/s | 50 |
| CONVOY | DATUM | 8.0% | 83 | 3.73 PH/s | 62 |
| Omega Pool | DATUM | 4.5% | 46 | 2.07 PH/s | 6 |
| dxpool | DATUM | 3.8% | 39 | 1.75 PH/s | 4 |
| RIPTIDE | DATUM | 2.1% | 22 | 990 TH/s | 37 |
| PyBLOCK | DATUM | 1.4% | 15 | 675 TH/s | 11 |
| PaperclipPool | DATUM | 0.4% | 4 | 180 TH/s | 13 |
| BTCB2 Pool | DATUM | 0.2% | 2 | 90.0 TH/s | 2 |
| Rabid | Stratum only | 0.2% | 2 | 90.0 TH/s | 0 |
| Bitcoin Xor | DATUM | 0.1% | 1 | 45.0 TH/s | 9 |
24 pools seen since the fork · as of 10:15 UTC
Questions
The short answers
Is this a new coin?
No. It is Bitcoin's ledger, continued under a different proof of work from block 961,640. If you held bitcoin before that block, the same balance exists on this chain at the same address. It trades as XBT to tell the two chains apart.
What can I mine it with?
Anything that can hash BLAKE2b: purpose-built ASICs, GPUs, even a CPU for testing. SHA-256 bitcoin miners cannot.
How do payouts work on this chain?
Pools running DATUM pay miners inside the coinbase of the block that earned it, so a payout and a block are the same event and no pool holds a balance for you. Each pool sets its own split: the Lazarus Pool site documents its scheme, fees and window.
Why does my payout take so long to spend?
Coinbase outputs always mature before they can be spent. Under the long coinbase maturity soft forks a coin mined from block 973,440 to 979,918 waits 6,480 blocks (about 45 days) and one mined from block 979,919 on waits 25,920 blocks (about 180 days, Knots 29.4.3), each counted from its own block. The coins are yours the moment the block confirms; they are only locked from spending.
I am on a pool's stratum today. What should I do?
Move to your own node and DATUM gateway. Your accepted work is tied to your address rather than to how you connect, so your place in a pool's payout window carries over. The pool site has the DATUM setup steps.