Source text: British startup Stratiphy is set to offer cryptocurrency exchange-traded notes (ETNs) and Innovative Finance ISAs (IFISAs), enabling investors to hold crypto assets within tax-free capital gains accounts. Stratiphy will provide three ETNs issued by 21Shares, Europe's largest crypto ETP issuer, which track Bitcoin, Ethereum, and a Bitcoin-gold composite product. The platform currently manages approximately £4 million in assets and serves around 2,000 clients. This development follows the UK Financial Conduct Authority's decision last October to lift a four-year ban on retail investors purchasing exchange-traded notes (ETNs). Target language code: fr Translation instructions: This is the news article content. Please maintain the original meaning.