A nearly 10-hour procedural vote, the longest in House history, saw GOP lawmakers flip-flop on major crypto bills amid late-night talks.

The crypto industry was headed for a landmark moment in the House with three bills that it helped push going to a vote. But a coalition of ultraconservative House Republicans staged a mutiny.

Crypto week kicks off on Capitol Hill, with lawmakers set to debate a handful of bills that sources say could have a big impact on the market.

But those efforts hit an early snag Tuesday, when several conservative Republicans joined with Democrats in blocking a procedural vote to allow consideration of three crypto bills as part of a dispute over how the measures should be packaged and considered.