Finance

Capital market rules tighten as MyData programme expands

South Korean financial authorities are accelerating efforts to tighten capital market discipline, pledging tougher action against illegal practices aimed at avoiding delisting and pushing for timely exits of so-called zombie firms. Korea Exchange will introduce rules from July to delist penny stocks and raise standards for dealing with weak companies. Regulators also plan to curb duplicate listings and tighten reviews. Some decisions, including Hong Kong ELS fines and Samsung Securities approvals, remain delayed.

Crypto

Adam Back says Bitcoin must prepare quantum-resistant shift; Satoshi holdings could be estimated

Bitcoin could reveal how much bitcoin Satoshi Nakamoto can actually access if it shifts to a post-quantum system, a claim has emerged. Blockstream CEO Adam Back (아담 백) said the safest approach is to design an optional upgrade that allows a move to quantum-resistant cryptography if needed. That shift could help gauge the effective size of Satoshi-linked holdings. Separately, a proposal to restrict movement of quantum-vulnerable coins has drawn criticism as confiscatory.