Double SHA-256 has been Bitcoin's proof of work since the first block in 2009, and every chain here mines the same function. It is mined almost entirely on dedicated ASICs, so all of these chains draw on one pool of machines: hashrate moves between them as price and difficulty shift, and the smaller ones can be outmined by a sliver of Bitcoin's miners.
4 of the 21 chains have a hashrate a source publishes. Bitcoin receives 99.6% of the SHA-256 work measured here. The smallest, eCash, holds <0.1%: anyone running more than that fraction of the algorithm's machines could outmine it.
| # | Asset | Hashrate | Share of algo | Block time | Paid to miners / day | Issuance / yr | Difficulty 24h | Market cap |
|---|---|---|---|---|---|---|---|---|
| 1 | BitcoinBTC | 1.09 ZH/s | 99.6% | 10 min | $36.5M | 0.8% | 0.0% | $1.62T |
| 14 | Bitcoin CashBCH | 4.54 EH/s | 0.4% | 10 min | $130K | 0.8% | +2.4% | $5.8B |
| 44 | Bitcoin SVBSV | 211 PH/s | <0.1% | 10 min | $7,812 | 0.8% | — | $349M |
| 59 | eCashXEC | 40 PH/s | <0.1% | 10 min | $1,741 | 0.5% | −1.7% | $134M |
| 238 | Bitcoin 2BTC2 | — | — | 10 min | — | — | — | $1M |
| 282 | BitcoinIIBC2 | — | — | 10 min | — | — | — | $262,563 |
| 323 | AcoinACOIN | — | — | 40 s | — | — | — | $3,808 |
| 331 | Electric CashELCASH | — | — | 10 min | — | — | — | $0 |
| 332 | BTCMobickBMB | — | — | — | — | — | — | $0 |
| 342 | XBITXBT | — | — | 1 min | — | — | — | $0 |
| 373 | TerracoinTRC | — | — | 2 min | — | — | — | $0 |
| 377 | ZetacoinZET | — | — | 30 s | — | — | — | $0 |
| 407 | CaliforniumCF | — | — | 1.5 min | — | — | — | $0 |
| 419 | EurocoinEUC | — | — | 2 min | — | — | — | $0 |
| 452 | ZayedcoinZYD | — | — | 1.5 min | — | — | — | $0 |
| 453 | DollarcoinDLC | — | — | 4 min | — | — | — | $0 |
| 90 | Fractal BitcoinFB | — | — | 30 s | $6,576 | 6.0% | −4.6% | $40M |
| 123 | NamecoinNMC | — | — | 10 min | — | — | — | $22M |
| 375 | FreicoinFRC | — | — | 10 min | — | — | — | $0 |
| 376 | IxcoinIXC | — | — | 10 min | — | — | — | $0 |
| 378 | UnobtaniumUNO | — | — | 1 min | — | — | — | $0 |
Hashrate is each chain's own work, comparable only within one algorithm. Paid to miners / day is block reward × blocks per day at the protocol's target block time × price — what the network spends on its own security. Block rewards come from WhatToMine, which averages transaction fees in for some chains; where it does not list a chain, the reward is derived from the halving schedule. Blank means no source publishes it.
21 in the CoinSpectrum ranking as of 28 October 2026: Bitcoin (BTC), Bitcoin Cash (BCH), Bitcoin SV (BSV), eCash (XEC), Fractal Bitcoin (FB), Namecoin (NMC), Bitcoin 2 (BTC2), BitcoinII (BC2), Acoin (ACOIN), Electric Cash (ELCASH), BTCMobick (BMB), XBIT (XBT) and 9 more. Tokens never count — only chains with their own blockchain and consensus.
Yes. A SHA-256 ASIC mines any chain on this page; only the pool and the payout address change. That shared hardware is why hashrate migrates between these chains when profitability moves, and why a small SHA-256 chain is exposed to anyone holding a small fraction of Bitcoin's hashrate.
About $36.7M a day across the chains listed, counting block reward × blocks per day × price on 28 October 2026. Bitcoin accounts for 99.6% of it.
It is the fraction of all the SHA-256 work listed here that the chain receives. Machines can switch between these chains freely, so a chain holding a small share can be outmined by anyone who controls more than that share of the algorithm's machines. A large share is the security; a small one is an exposure.
ScryptX11EquihashRandomXKAWPOWEvery proof-of-work chain
Methodology — how each chain's consensus was decided. Wrapped, staked and pegged claims are listed separately and never counted.