* Asia stocks mixed, Nikkei up as yen eases
* North Korea tests suspected ICBM, initial reaction muted
* Bitcoin tops $10,000 barrier on more exchanges
* Republican senators progress with U.S. tax cut plans
* US banking stocks boosted by presumptive Fed chair
SYDNEY, Nov 29 (Reuters) - The dollar held firm on Wednesday after Wall Street shot to record peaks amid signs of progress on U.S. tax cuts, while Bitcoin topped $10,000 on more exchanges as appetite for digital currencies showed no sign of fading. Asian share markets were not as jubilant, held back by caution over the latest missile test by North Korea and concerns at recent softness in Chinese shares. MSCI's broadest index of Asia-Pacific shares outside Japan was up just a fraction, while China's blue chip index eased 0.5 percent. Among the better performers, Japan's Nikkei added 0.4 percent, while Australia's main index rose 0.7 percent.
The prospects for a U.S. tax cut seemed to improve after Senate Republicans rammed forward their bill in a partisan committee vote that set up a full vote by the Senate as soon as Thursday, although details of the measure remained unsettled.
Republican leaders conceded that they have yet to round up the votes needed for passage in the Senate, where they hold a narrow 52-48 majority.
Some analysts, however, did warn of the risks of unintended consequences if the package was passed.
"Tax cuts will mainly boost the demand side of the economy at a time when the economy has little spare capacity," said Jeremy Lawson, chief economist at Standard Life Investments.
"For that reason, the package will primarily bring forward activity with most of the stimulus eventually offset by the Federal Reserve lifting interest rates more quickly."
Fed chair nominee Jerome Powell, in his Senate confirmation hearing on Tuesday, said the case for a December rate hike was coming together, though he dodged comment on the tax proposals.
Powell also hinted at a lighter touch for bank regulation, saying current rules were already tough enough.
The S&P financial sector soared 2.6 percent in reaction, its biggest daily gain since March 1.
That helped the Dow climb 1.09 percent, while the S&P 500 rose 0.99 percent and the Nasdaq or 0.49 percent.
Adding to the good cheer was data showing U.S. consumer confidence surged to a near 17-year high in November, while home prices rose sharply in September, which should underpin consumer spending.
All of which helped the dollar regain some ground. Against a basket of currencies it was steady at 93.233 and off a two-month trough of 92.496 touched on Monday.
The dollar likewise edged up to 111.57 yen and away from a 10-week low of 110.85, while the euro backed off to $1.1844.
Sterling steadied having rallied on media reports Britain and the EU have reached agreement on a Brexit divorce bill that might herald a breakthrough in the talks.
The pound was last changing hands at $1.3366, having jumped from as low as $1.3222 on Tuesday.
They all paled in comparison to virtual currency bitcoin which soared to an all-time high above $10,000 on a bevy of different exchanges.
Blockchain and cryptocurrency website Coindesk put the peak at $10,044.29, taking gains in the past month to about 63 percent. On another major trading platform, the Luxembourg-based BitStamp, it was trading at $9,999.
In commodity markets, oil eased amid uncertainty over the outcome of OPEC talks about extending price-supporting output cuts, combined with a surprise rise in crude inventories.
U.S. crude eased 28 cents to $57.71, while Brent crude oil lost 35 cents to $63.26 a barrel.
(Editing by Sam Holmes)